add todo for credits

.gitignore

@@ -3,5 +3,5 @@
 /media/*
 /posts/*
 !/posts/README.md
-/.slbg-cache
+/cache
 /config.toml

BUILDING.md

@@ -0,0 +1,51 @@
+# Building bingus-blog
+
+this guide assumes you have git and are on linux.  
+at the moment, compiling on windows is supported, but not _for windows_.
+
+1. first, acquire _rust nightly_.  
+   the recommended method is to install [rustup](https://rustup.rs/),
+   and use that to get _rust nightly_. choose "customize installation",
+   and set "default toolchain" to nightly to save time later, provided
+   you do not need _rust stable_ for something else
+2. start your favorite terminal
+3. then, download the repository: `git clone https://git.slonk.ing/slonk/bingus-blog && cd bingus-blog`
+4. finally, build the application: `cargo +nightly build --release`
+5. your executable is `target/release/bingus-blog`, copy it to your server and
+   you're done!
+
+## Building for another architecture
+
+you can use the `--target` flag in `cargo build` for this purpose.  
+examples are for Arch Linux x86_64.
+
+here's how to compile for `aarch64-unknown-linux-gnu`
+(eg. Oracle CI Free Tier ARM VPS):
+
+```sh
+# install the required packages to compile and link aarch64 binaries
+sudo pacman -S aarch64-linux-gnu-gcc
+cargo +nightly build --release --target=aarch64-unknown-linux-gnu
+```
+
+your executable will be `target/aarch64-unkown-linux-gnu/release/bingus-blog`.
+
+---
+
+a more tricky example is building for `aarch64-unknown-linux-musl`
+(eg. a Redmi 5 Plus running postmarketOS):
+
+```sh
+# there is no toolchain for aarch64-unknown-linux-musl,
+# so we have to repurpose the GNU toolchain. this doesn't
+# work out of the box so we have to set some environment variables
+sudo pacman -S aarch64-linux-gnu-gcc
+export CC=aarch64-linux-gnu-gcc
+export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_LINKER=$CC
+cargo +nightly build --release --target=aarch64-unknown-linux-musl
+# the reason we had to do this is because cargo tries to use
+# the same toolchain as the target's name. but we can tell it to use
+# the GNU one like so.
+```
+
+your executable will be `target/aarch64-unkown-linux-musl/release/bingus-blog`.

CONFIG.md

@@ -0,0 +1,67 @@
+# Configuration
+
+the configuration format, with defaults, is documented below:
+
+```toml
+title = "bingus-blog"  # title of the blog
+# description of the blog
+description = "blazingly fast markdown blog software written in rust memory safe"
+markdown_access = true # allow users to see the raw markdown of a post
+                       # endpoint: /posts/<name>.md
+js_enable = true       # enable javascript (required for sorting and dates)
+
+[style]
+date_format = "RFC3339" # format string used to format dates in the backend
+                       # it's highly recommended to leave this as default,
+                       # so the date can be formatted by the browser.
+                       # format: https://docs.rs/chrono/latest/chrono/format/strftime/index.html#specifiers
+default_sort = "date"  # default sorting method ("date" or "name")
+#default_color = "#f5c2e7" # default embed color, optional
+
+[style.display_dates]
+creation = true        # display creation ("written") dates
+modification = true    # display modified ("last modified") dates
+
+[rss]
+enable = false         # serve an rss field under /feed.xml
+                       # this may be a bit resource intensive
+link = "https://..."   # public url of the blog, required if rss is enabled
+
+[dirs]
+posts = "posts"        # where posts are stored
+media = "media"        # directory served under /media/
+custom_templates = "templates" # custom templates dir
+custom_static = "static"       # custom static dir
+                       # see CUSTOM.md for documentation
+[http]
+host = "0.0.0.0"       # ip to listen on
+port = 3000            # port to listen on
+
+[cache]
+enable = true          # save metadata and rendered posts into RAM
+                       # highly recommended, only turn off if absolutely necessary
+cleanup = true         # clean cache, highly recommended
+#cleanup_interval = 86400000 # clean the cache regularly instead of just at startup
+                       # uncomment to enable
+persistence = true     # save the cache to on shutdown and load on startup
+file = "cache"         # file to save the cache to
+compress = true        # compress the cache file
+compression_level = 3  # zstd compression level, 3 is recommended
+
+[render]
+syntect.load_defaults = false      # include default syntect themes
+syntect.themes_dir = "themes"      # directory to include themes from
+syntect.theme = "Catppuccin Mocha" # theme file name (without `.tmTheme`)
+```
+
+configuration is done in [TOML](https://toml.io/)  
+if an option marked "optional" is not set, it will not be initialized with
+a default value  
+you don't have to copy the whole thing from here,  
+it's generated by the program if it doesn't exist
+
+## Specifying the configuration file
+
+the configuration file is loaded from `config.toml` by default, but the path
+can be overriden by setting the environment variable `BINGUS_BLOG_CONFIG`,
+which will make bingus-blog try to read that file or fail and exit.

CUSTOM.md

@@ -0,0 +1,49 @@
+# Custom Content
+
+bingus-blog supports loading custom content such as templates and static files
+at runtime from custom locations.
+
+the configuration options `dirs.custom_templates` and `dirs.custom_static`
+allow you to set where these files are loaded from.
+
+customizing the error page, other than CSS, is not supported at this time.
+
+## Custom Templates
+
+custom templates are written in
+[Handlebars (the rust variant)](https://crates.io/crates/handlebars).
+
+the *custom templates directory* has a non-recursive structure:
+
+```md
+./
+  - index.html # ignored
+  - index.hbs # loaded as `index`
+  - post.hbs # loaded as `post`
+  - [NAME].hbs # loaded as `[NAME]`
+  - ...
+```
+
+templates will be loaded from first, the executable, then, the custom
+templates path, overriding the defaults.
+
+template changes are also processed after startup, any changed template will be
+compiled and will replace the existing template in the registry, or add a
+new one (though that does nothing).  
+if a template is deleted, the default template will be recompiled into
+it's place.  
+note that the watcher only works if the *custom templates directory* existed
+at startup. if you delete/create the directory, you must restart the program.
+
+## Custom Static Files
+
+GET requests to `/static` will first be checked against `dirs.custom_static`.
+if the file is not found in the *custom static directory*, bingus-blog will try
+to serve it from the directory embedded in the executable. this means you can
+add whatever you want in the *custom static directory* and it will be served
+under `/static`.
+
+## Custom Media
+
+the endpoint `/media` is served from `dirs.media`. no other logic or mechanism
+is present.

Cargo.toml

@@ -36,10 +36,16 @@ comrak = { version = "0.22.0", features = [
   "syntect",
 ], default-features = false }
 console-subscriber = { version = "0.2.0", optional = true }
+derive_more = "0.99.17"
 fronma = "0.2.0"
+handlebars = "6.0.0"
+include_dir = "0.7.4"
+mime_guess = "2.0.5"
+notify-debouncer-full = { version = "0.3.1", default-features = false }
 rss = "2.0.7"
 scc = { version = "2.1.0", features = ["serde"] }
 serde = { version = "1.0.197", features = ["derive"] }
+serde_json = { version = "1.0.124", features = ["preserve_order"] }
 syntect = "5.2.0"
 thiserror = "1.0.58"
 tokio = { version = "1.37.0", features = [
@@ -50,6 +56,7 @@ tokio = { version = "1.37.0", features = [
 ] }
 tokio-util = { version = "0.7.10", default-features = false }
 toml = "0.8.12"
+tower = "0.4.13"
 tower-http = { version = "0.5.2", features = [
   "compression-gzip",
   "fs",

README.md

@@ -1,7 +1,7 @@
 ---
-title: "README"
-description: "the README.md file of this project"
-author: "slonkazoid"
+title: README
+description: the README.md file of this project
+author: slonkazoid
 created_at: 2024-04-18T04:15:26+03:00
 ---
 
@@ -9,70 +9,39 @@ created_at: 2024-04-18T04:15:26+03:00
 
 blazingly fast markdown blog software written in rust memory safe
 
+for bingus-blog viewers: [see original document](https://git.slonk.ing/slonk/bingus-blog)
+
+## Features
+
+- posts are written in markdwon and loaded at runtime, meaning you
+  can write posts from anywhere and sync it with the server without headache
+- RSS is supported
+- the look of the blog is extremely customizable, with support for
+  [custom drop-ins](CUSTOM.md) for both templates and static content
+- really easy to deploy (the server is one executable file)
+- blazingly fast
+
 ## TODO
 
-- [x] RSS
-- [x] finish writing this document
-- [x] document config
+- [ ] blog thumbnail and favicon
+- [ ] sort asc/desc
 - [ ] extend syntect options
-- [ ] general cleanup of code
+- [ ] ^ fix syntect mutex poisoning
 - [ ] better error reporting and error pages
 - [ ] better tracing
-- [x] cache cleanup task
-- [ ] ^ replace HashMap with HashCache once i implement [this](https://github.com/wvwwvwwv/scalable-concurrent-containers/issues/139)
-- [x] (de)compress cache with zstd on startup/shutdown
+- [ ] replace HashMap with HashCache once i implement [this](https://github.com/wvwwvwwv/scalable-concurrent-containers/issues/139)
 - [ ] make date parsing less strict
-- [ ] make date formatting better
-- [ ] date formatting respects user timezone
-- [x] clean up imports and require less features
 - [ ] improve home page
-- [x] tags
 - [ ] multi-language support
+- [ ] add credits
 - [x] be blazingly fast
 - [x] 100+ MiB binary size
 
 ## Configuration
 
-the default configuration with comments looks like this
+see [CONFIG.md](CONFIG.md)
 
-```toml
-title = "bingus-blog"  # title of the website
-description = "blazingly fast markdown blog software written in rust memory safe" # description of the website
-raw_access = true      # allow users to see the raw markdown of a post
-
-[rss]
-enable = false         # serve an rss field under /feed.xml
-                       # this may be a bit resource intensive
-link = "https://..."   # public url of the blog, required if rss is enabled
-
-[dirs]
-posts = "posts"        # where posts are stored
-media = "media"        # directory served under /media/
-
-[http]
-host = "0.0.0.0"       # ip to listen on
-port = 3000            # port to listen on
-
-[cache]
-enable = true          # save metadata and rendered posts into RAM
-                       # highly recommended, only turn off if absolutely necessary
-cleanup = true         # clean cache, highly recommended
-#cleanup_interval = 86400000 # clean the cache regularly instead of just at startup
-                       # uncomment to enable
-persistence = true     # save the cache to on shutdown and load on startup
-file = "cache"         # file to save the cache to
-compress = true        # compress the cache file
-compression_level = 3  # zstd compression level, 3 is recommended
-
-[render]
-syntect.load_defaults = false      # include default syntect themes
-syntect.themes_dir = "themes"      # directory to include themes from
-syntect.theme = "Catppuccin Mocha" # theme file name (without `.tmTheme`)
-```
-
-you don't have to copy it from here, it's generated if it doesn't exist
-
-## Usage
+## Building
 
 this project uses nightly-only features.
 make sure you have the nightly toolchain installed.
@@ -85,21 +54,7 @@ cargo +nightly build --release
 
 the executable will be located at `target/release/bingus-blog`.
 
-### Building for another architecture
-
-you can use the `--target` flag in `cargo build` for this purpose
-
-building for `aarch64-unknown-linux-musl` (for example, a Redmi 5 Plus running postmarketOS):
-
-```sh
-# install the required packages to compile and link aarch64 binaries
-sudo pacman -S aarch64-linux-gnu-gcc
-export CC=aarch64-linux-gnu-gcc
-export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_LINKER=$CC
-cargo +nightly build --release --target=aarch64-unknown-linux-musl
-```
-
-your executable will be located at `target/<target>/release/bingus-blog` this time.
+see [BUILDING.md](BUILDING.md) for more information and detailed instructions.
 
 ## Writing Posts
 
@@ -118,15 +73,22 @@ every post **must** begin with a **valid** front matter. else it wont be listed
 in / & /posts, and when you navigate to it, you will be met with an error page.
 the error page will tell you what the problem is.
 
-example:
+full example:
 
 ```md
 ---
-title: "README"
-description: "the README.md file of this project"
-author: "slonkazoid"
-created_at: 2024-04-18T04:15:26+03:00
-#modified_at: ... # see above
+title: My first post # title of the post
+description: The first post on this awesome blog! # short description of the post
+author: Blubber256 # author of the post
+icon: /media/first-post/icon.png # icon/thumbnail of post used in embeds
+icon_alt: Picture of a computer running DOOM
+color: "#00aacc" # color of post, also used in embeds
+created_at: 2024-04-18T04:15:26+03:00 # date of writing, this is highly
+# recommended if you are on a system which doesnt have btime (like musl),
+# because this is fetched from file stats by default
+#modified_at: ... # see above. this is also fetched from the filesystem
+tags: # tags, or keywords, used in meta and also in the ui
+    - lifestyle
 ---
 ```
 
@@ -145,25 +107,39 @@ standard. examples of valid and invalid dates:
 -                           # everything else is also invalid
 ```
 
-## Routes
+## Non-static Routes
 
 - `GET /`: index page, lists posts
 - `GET /posts`: returns a list of all posts with metadata in JSON format
 - `GET /posts/<name>`: view a post
 - `GET /posts/<name>.md`: view the raw markdown of a post
 - `GET /post/*`: redirects to `/posts/*`
+- `GET /feed.xml`: RSS feed
 
 ## Cache
 
 bingus-blog caches every post retrieved and keeps it permanently in cache.
-the only way a cache entry is removed is when it's requested and it does
-not exist in the filesystem. cache entries don't expire, but they get
-invalidated when the mtime of the markdown file changes.
+there is a toggleable cleanup task that periodically sweeps the cache to
+remove dead entries, but it can still get quite big.
 
-if cache persistence is on, the cache is compressed & written on shutdown,
-and read & decompressed on startup. one may opt to set the cache location
-to point to a tmpfs so it saves and loads really fast, but it doesn't persist
-across boots, also at the cost of even more RAM usage.
+if cache persistence is on, the cache is (compressed &) written to disk on
+shutdown, and read (& decompressed) on startup. one may opt to set the cache
+location to point to a tmpfs to make it save and load quickly, but not persist
+across reboots at the cost of more RAM usage.
 
-the compression reduced a 3.21 MB file cache into 0.18 MB with almost instantly.
-there is basically no good reason to not have compression on.
+in my testing, the compression reduced a 3.21 MB cache to 0.18 MB almost
+instantly. there is basically no good reason to not have compression on,
+unless you have filesystem compression already of course.
+
+## Contributing
+
+make sure your changes don't break firefox, chromium,text-based browsers,
+and webkit support
+
+### Feature Requests
+
+i want this project to be a good and usable piece of software, so i implement
+feature requests provided they fit the project and it's values.
+
+most just ping me on discord with feature requests, but if your request is
+non-trivial, please create an issue [here](https://git.slonk.ing/slonk/bingus-blog/issues).

partials/post_table.hbs

@@ -0,0 +1,18 @@
+<div class="table">
+	{{#if (and (ne this.created_at null) style.display_dates.creation)}}
+		<div class="created">written</div>
+		<div class="created value">{{>span_date dt=this.created_at df=style.date_format}}</div>
+	{{/if}}
+	{{#if (and (ne this.modified_at null) style.display_dates.modification)}}
+		<div class="modified">last modified</div>
+		<div class="modified value">{{>span_date dt=this.modified_at df=style.date_format}}</div>
+	{{/if}}
+	{{#if (gt (len this.tags) 0)}}
+		<div class="tags">tags</div>
+		<div class="tags value">
+			{{#each this.tags}}
+				<a href="/?tag={{this}}" title="view all posts with this tag">{{this}}</a>
+			{{/each}}
+		</div>
+	{{/if}}
+</div>

partials/span_date.hbs

@@ -0,0 +1 @@
+<span class="date {{#if (eq df "RFC3339")}}date-rfc3339{{/if}}">{{date dt df}}</span>

src/app.rs

@@ -0,0 +1,279 @@
+use std::collections::HashMap;
+use std::sync::Arc;
+use std::time::Duration;
+
+use axum::extract::{Path, Query, State};
+use axum::http::header::CONTENT_TYPE;
+use axum::http::Request;
+use axum::response::{IntoResponse, Redirect, Response};
+use axum::routing::get;
+use axum::{Json, Router};
+use handlebars::Handlebars;
+use include_dir::{include_dir, Dir};
+use rss::{Category, ChannelBuilder, ItemBuilder};
+use serde::{Deserialize, Serialize};
+use serde_json::Map;
+use tokio::sync::RwLock;
+use tower::service_fn;
+use tower_http::services::ServeDir;
+use tower_http::trace::TraceLayer;
+use tracing::{info, info_span, Span};
+
+use crate::config::{Config, StyleConfig};
+use crate::error::{AppError, AppResult};
+use crate::post::{MarkdownPosts, PostManager, PostMetadata, RenderStats, ReturnedPost};
+use crate::serve_dir_included::handle;
+
+const STATIC: Dir<'static> = include_dir!("$CARGO_MANIFEST_DIR/static");
+
+#[derive(Clone)]
+#[non_exhaustive]
+pub struct AppState {
+    pub config: Arc<Config>,
+    pub posts: Arc<MarkdownPosts<Arc<Config>>>,
+    pub reg: Arc<RwLock<Handlebars<'static>>>,
+}
+
+#[derive(Serialize)]
+struct IndexTemplate<'a> {
+    title: &'a str,
+    description: &'a str,
+    posts: Vec<PostMetadata>,
+    rss: bool,
+    js: bool,
+    tags: Map<String, serde_json::Value>,
+    joined_tags: String,
+    style: &'a StyleConfig,
+}
+
+#[derive(Serialize)]
+struct PostTemplate<'a> {
+    meta: &'a PostMetadata,
+    rendered: String,
+    rendered_in: RenderStats,
+    markdown_access: bool,
+    js: bool,
+    color: Option<&'a str>,
+    joined_tags: String,
+    style: &'a StyleConfig,
+}
+
+#[derive(Deserialize)]
+struct QueryParams {
+    tag: Option<String>,
+    #[serde(rename = "n")]
+    num_posts: Option<usize>,
+}
+
+fn collect_tags(posts: &Vec<PostMetadata>) -> Map<String, serde_json::Value> {
+    let mut tags = HashMap::new();
+
+    for post in posts {
+        for tag in &post.tags {
+            if let Some((existing_tag, count)) = tags.remove_entry(tag) {
+                tags.insert(existing_tag, count + 1);
+            } else {
+                tags.insert(tag.clone(), 1);
+            }
+        }
+    }
+
+    let mut tags: Vec<(String, u64)> = tags.into_iter().collect();
+
+    tags.sort_unstable_by_key(|(v, _)| v.clone());
+    tags.sort_by_key(|(_, v)| -(*v as i64));
+
+    let mut map = Map::new();
+
+    for tag in tags.into_iter() {
+        map.insert(tag.0, tag.1.into());
+    }
+
+    map
+}
+
+fn join_tags_for_meta(tags: &Map<String, serde_json::Value>, delim: &str) -> String {
+    let mut s = String::new();
+    let tags = tags.keys().enumerate();
+    let len = tags.len();
+    for (i, tag) in tags {
+        s += tag;
+        if i != len - 1 {
+            s += delim;
+        }
+    }
+    s
+}
+
+async fn index<'a>(
+    State(AppState {
+        config, posts, reg, ..
+    }): State<AppState>,
+    Query(query): Query<QueryParams>,
+) -> AppResult<impl IntoResponse> {
+    let posts = posts
+        .get_max_n_post_metadata_with_optional_tag_sorted(query.num_posts, query.tag.as_ref())
+        .await?;
+
+    let tags = collect_tags(&posts);
+    let joined_tags = join_tags_for_meta(&tags, ", ");
+
+    let reg = reg.read().await;
+    let rendered = reg.render(
+        "index",
+        &IndexTemplate {
+            title: &config.title,
+            description: &config.description,
+            posts,
+            rss: config.rss.enable,
+            js: config.js_enable,
+            tags,
+            joined_tags,
+            style: &config.style,
+        },
+    );
+    drop(reg);
+    Ok(([(CONTENT_TYPE, "text/html")], rendered?))
+}
+
+async fn all_posts(
+    State(AppState { posts, .. }): State<AppState>,
+    Query(query): Query<QueryParams>,
+) -> AppResult<Json<Vec<PostMetadata>>> {
+    let posts = posts
+        .get_max_n_post_metadata_with_optional_tag_sorted(query.num_posts, query.tag.as_ref())
+        .await?;
+
+    Ok(Json(posts))
+}
+
+async fn rss(
+    State(AppState { config, posts, .. }): State<AppState>,
+    Query(query): Query<QueryParams>,
+) -> AppResult<Response> {
+    if !config.rss.enable {
+        return Err(AppError::RssDisabled);
+    }
+
+    let posts = posts
+        .get_all_posts(|metadata, _| {
+            !query
+                .tag
+                .as_ref()
+                .is_some_and(|tag| !metadata.tags.contains(tag))
+        })
+        .await?;
+
+    let mut channel = ChannelBuilder::default();
+    channel
+        .title(&config.title)
+        .link(config.rss.link.to_string())
+        .description(&config.description);
+    //TODO: .language()
+
+    for (metadata, content, _) in posts {
+        channel.item(
+            ItemBuilder::default()
+                .title(metadata.title)
+                .description(metadata.description)
+                .author(metadata.author)
+                .categories(
+                    metadata
+                        .tags
+                        .into_iter()
+                        .map(|tag| Category {
+                            name: tag,
+                            domain: None,
+                        })
+                        .collect::<Vec<Category>>(),
+                )
+                .pub_date(metadata.created_at.map(|date| date.to_rfc2822()))
+                .content(content)
+                .link(
+                    config
+                        .rss
+                        .link
+                        .join(&format!("/posts/{}", metadata.name))?
+                        .to_string(),
+                )
+                .build(),
+        );
+    }
+
+    let body = channel.build().to_string();
+    drop(channel);
+
+    Ok(([(CONTENT_TYPE, "text/xml")], body).into_response())
+}
+
+async fn post(
+    State(AppState {
+        config, posts, reg, ..
+    }): State<AppState>,
+    Path(name): Path<String>,
+) -> AppResult<impl IntoResponse> {
+    match posts.get_post(&name).await? {
+        ReturnedPost::Rendered(ref meta, rendered, rendered_in) => {
+            let joined_tags = meta.tags.join(", ");
+
+            let reg = reg.read().await;
+            let rendered = reg.render(
+                "post",
+                &PostTemplate {
+                    meta,
+                    rendered,
+                    rendered_in,
+                    markdown_access: config.markdown_access,
+                    js: config.js_enable,
+                    color: meta
+                        .color
+                        .as_deref()
+                        .or(config.style.default_color.as_deref()),
+                    joined_tags,
+                    style: &config.style,
+                },
+            );
+            drop(reg);
+            Ok(([(CONTENT_TYPE, "text/html")], rendered?).into_response())
+        }
+        ReturnedPost::Raw(body, content_type) => {
+            Ok(([(CONTENT_TYPE, content_type)], body).into_response())
+        }
+    }
+}
+
+pub fn new(config: &Config) -> Router<AppState> {
+    Router::new()
+        .route("/", get(index))
+        .route(
+            "/post/:name",
+            get(
+                |Path(name): Path<String>| async move { Redirect::to(&format!("/posts/{}", name)) },
+            ),
+        )
+        .route("/posts/:name", get(post))
+        .route("/posts", get(all_posts))
+        .route("/feed.xml", get(rss))
+        .nest_service(
+            "/static",
+            ServeDir::new(&config.dirs.custom_static)
+                .precompressed_gzip()
+                .fallback(service_fn(|req| handle(req, &STATIC))),
+        )
+        .nest_service("/media", ServeDir::new(&config.dirs.media))
+        .layer(
+            TraceLayer::new_for_http()
+                .make_span_with(|request: &Request<_>| {
+                    info_span!(
+                        "request",
+                        method = ?request.method(),
+                        path = ?request.uri().path(),
+                    )
+                })
+                .on_response(|response: &Response<_>, duration: Duration, span: &Span| {
+                    let _ = span.enter();
+                    let status = response.status();
+                    info!(?status, ?duration, "response");
+                }),
+        )
+}

src/config.rs

@@ -1,11 +1,11 @@
 use std::env;
-use std::net::{IpAddr, Ipv4Addr};
+use std::net::{IpAddr, Ipv6Addr};
 use std::path::PathBuf;
 
 use color_eyre::eyre::{bail, Context, Result};
 use serde::{Deserialize, Serialize};
 use tokio::io::{AsyncReadExt, AsyncWriteExt};
-use tracing::{error, info};
+use tracing::{error, info, instrument};
 use url::Url;
 
 use crate::ranged_i128_visitor::RangedI128Visitor;
@@ -49,6 +49,8 @@ pub struct HttpConfig {
 pub struct DirsConfig {
     pub posts: PathBuf,
     pub media: PathBuf,
+    pub custom_static: PathBuf,
+    pub custom_templates: PathBuf,
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
@@ -57,13 +59,48 @@ pub struct RssConfig {
     pub link: Url,
 }
 
+#[derive(Serialize, Deserialize, Debug, Clone, Default)]
+pub enum DateFormat {
+    #[default]
+    RFC3339,
+    #[serde(untagged)]
+    Strftime(String),
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone, Default, Copy, PartialEq, Eq)]
+#[serde(rename_all = "lowercase")]
+#[repr(u8)]
+pub enum Sort {
+    #[default]
+    Date,
+    Name,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(default)]
+#[derive(Default)]
+pub struct StyleConfig {
+    pub display_dates: DisplayDates,
+    pub date_format: DateFormat,
+    pub default_sort: Sort,
+    pub default_color: Option<String>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(default)]
+pub struct DisplayDates {
+    pub creation: bool,
+    pub modification: bool,
+}
+
 #[derive(Serialize, Deserialize, Debug, Clone)]
 #[serde(default)]
 pub struct Config {
     pub title: String,
     pub description: String,
-    pub raw_access: bool,
-    pub num_posts: usize,
+    pub markdown_access: bool,
+    pub js_enable: bool,
+    pub style: StyleConfig,
     pub rss: RssConfig,
     pub dirs: DirsConfig,
     pub http: HttpConfig,
@@ -76,8 +113,9 @@ impl Default for Config {
         Self {
             title: "bingus-blog".into(),
             description: "blazingly fast markdown blog software written in rust memory safe".into(),
-            raw_access: true,
-            num_posts: 5,
+            markdown_access: true,
+            js_enable: true,
+            style: Default::default(),
             // i have a love-hate relationship with serde
             // it was engimatic at first, but then i started actually using it
             // writing my own serialize and deserialize implementations.. spending
@@ -96,11 +134,23 @@ impl Default for Config {
     }
 }
 
+impl Default for DisplayDates {
+    fn default() -> Self {
+        Self {
+            creation: true,
+            modification: true,
+        }
+    }
+}
+
+
 impl Default for DirsConfig {
     fn default() -> Self {
         Self {
             posts: "posts".into(),
             media: "media".into(),
+            custom_static: "static".into(),
+            custom_templates: "templates".into(),
         }
     }
 }
@@ -108,7 +158,7 @@ impl Default for DirsConfig {
 impl Default for HttpConfig {
     fn default() -> Self {
         Self {
-            host: IpAddr::V4(Ipv4Addr::UNSPECIFIED),
+            host: IpAddr::V6(Ipv6Addr::UNSPECIFIED),
             port: 3000,
         }
     }
@@ -138,10 +188,11 @@ impl Default for CacheConfig {
     }
 }
 
+#[instrument(name = "config")]
 pub async fn load() -> Result<Config> {
     let config_file = env::var(format!(
         "{}_CONFIG",
-        env!("CARGO_BIN_NAME").to_uppercase().replace("-", "_")
+        env!("CARGO_BIN_NAME").to_uppercase().replace('-', "_")
     ))
     .unwrap_or(String::from("config.toml"));
     match tokio::fs::OpenOptions::new()

src/error.rs

@@ -53,6 +53,8 @@ pub type AppResult<T> = Result<T, AppError>;
 pub enum AppError {
     #[error("failed to fetch post: {0}")]
     PostError(#[from] PostError),
+    #[error(transparent)]
+    HandlebarsError(#[from] handlebars::RenderError),
     #[error("rss is disabled")]
     RssDisabled,
     #[error(transparent)]
@@ -75,12 +77,9 @@ struct ErrorTemplate {
 impl IntoResponse for AppError {
     fn into_response(self) -> Response {
         let status_code = match &self {
-            AppError::PostError(err) => match err {
-                PostError::NotFound(_) => StatusCode::NOT_FOUND,
-                _ => StatusCode::INTERNAL_SERVER_ERROR,
-            },
+            AppError::PostError(PostError::NotFound(_)) => StatusCode::NOT_FOUND,
             AppError::RssDisabled => StatusCode::FORBIDDEN,
-            AppError::UrlError(_) => StatusCode::INTERNAL_SERVER_ERROR,
+            _ => StatusCode::INTERNAL_SERVER_ERROR,
         };
         (
             status_code,

src/filters.rs

@@ -1,33 +0,0 @@
-use std::{collections::HashMap, time::Duration};
-
-use chrono::{DateTime, TimeZone};
-
-use crate::post::PostMetadata;
-
-pub fn date<Utc: TimeZone>(date: &DateTime<Utc>) -> Result<String, askama::Error> {
-    Ok(date.to_utc().format("%Y-%m-%d %H:%M:%S UTC").to_string())
-}
-pub fn duration(duration: &&Duration) -> Result<String, askama::Error> {
-    Ok(format!("{:?}", duration))
-}
-
-pub fn collect_tags(posts: &Vec<PostMetadata>) -> Result<Vec<(String, u64)>, askama::Error> {
-    let mut tags = HashMap::new();
-
-    for post in posts {
-        for tag in &post.tags {
-            if let Some((existing_tag, count)) = tags.remove_entry(tag) {
-                tags.insert(existing_tag, count + 1);
-            } else {
-                tags.insert(tag.clone(), 1);
-            }
-        }
-    }
-
-    let mut tags: Vec<(String, u64)> = tags.into_iter().collect();
-
-    tags.sort_unstable_by_key(|(v, _)| v.clone());
-    tags.sort_by_key(|(_, v)| -(*v as i64));
-
-    Ok(tags)
-}

src/helpers.rs

@@ -0,0 +1,24 @@
+use std::fmt::Display;
+use std::time::Duration;
+
+use chrono::{DateTime, TimeZone, Utc};
+use handlebars::handlebars_helper;
+
+use crate::config::DateFormat;
+
+fn date_impl<T>(date_time: &DateTime<T>, date_format: &DateFormat) -> String
+where
+    T: TimeZone,
+    T::Offset: Display,
+{
+    match date_format {
+        DateFormat::RFC3339 => date_time.to_rfc3339_opts(chrono::SecondsFormat::Secs, true),
+        DateFormat::Strftime(ref format_string) => date_time.format(format_string).to_string(),
+    }
+}
+
+handlebars_helper!(date: |date_time: Option<DateTime<Utc>>, date_format: DateFormat| {
+    date_impl(date_time.as_ref().unwrap(), &date_format)
+});
+
+handlebars_helper!(duration: |duration_: Duration| format!("{:?}", duration_));

src/main.rs

@@ -1,337 +1,123 @@
-#![feature(let_chains)]
+#![feature(let_chains, pattern)]
 
+mod app;
 mod config;
 mod error;
-mod filters;
 mod hash_arc_store;
+mod helpers;
 mod markdown_render;
+mod platform;
 mod post;
 mod ranged_i128_visitor;
+mod serve_dir_included;
 mod systemtime_as_secs;
+mod templates;
 
 use std::future::IntoFuture;
-use std::io::Read;
 use std::net::SocketAddr;
 use std::process::exit;
 use std::sync::Arc;
 use std::time::Duration;
 
-use askama_axum::Template;
-use axum::extract::{Path, Query, State};
-use axum::http::{header, Request};
-use axum::response::{IntoResponse, Redirect, Response};
-use axum::routing::{get, Router};
-use axum::Json;
 use color_eyre::eyre::{self, Context};
-use error::AppError;
-use rss::{Category, ChannelBuilder, ItemBuilder};
-use serde::Deserialize;
-use tokio::io::{AsyncReadExt, AsyncWriteExt};
 use tokio::net::TcpListener;
+use tokio::sync::RwLock;
 use tokio::task::JoinSet;
+use tokio::time::Instant;
 use tokio::{select, signal};
 use tokio_util::sync::CancellationToken;
-use tower_http::services::ServeDir;
-use tower_http::trace::TraceLayer;
 use tracing::level_filters::LevelFilter;
-use tracing::{debug, error, info, info_span, warn, Span};
-use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt, EnvFilter};
+use tracing::{debug, error, info, info_span, warn, Instrument};
+use tracing_subscriber::layer::SubscriberExt;
+use tracing_subscriber::{util::SubscriberInitExt, EnvFilter};
 
-use crate::config::Config;
-use crate::error::{AppResult, PostError};
-use crate::post::cache::{Cache, CACHE_VERSION};
-use crate::post::{PostManager, PostMetadata, RenderStats};
-
-type ArcState = Arc<AppState>;
-
-#[derive(Clone)]
-struct AppState {
-    pub config: Config,
-    pub posts: PostManager,
-}
-
-#[derive(Template)]
-#[template(path = "index.html")]
-struct IndexTemplate {
-    title: String,
-    description: String,
-    posts: Vec<PostMetadata>,
-}
-
-#[derive(Template)]
-#[template(path = "post.html")]
-struct PostTemplate {
-    meta: PostMetadata,
-    rendered: String,
-    rendered_in: RenderStats,
-    markdown_access: bool,
-}
-
-#[derive(Deserialize)]
-struct QueryParams {
-    tag: Option<String>,
-    #[serde(rename = "n")]
-    num_posts: Option<usize>,
-}
-
-async fn index(
-    State(state): State<ArcState>,
-    Query(query): Query<QueryParams>,
-) -> AppResult<IndexTemplate> {
-    let posts = state
-        .posts
-        .get_max_n_post_metadata_with_optional_tag_sorted(query.num_posts, query.tag.as_ref())
-        .await?;
-
-    Ok(IndexTemplate {
-        title: state.config.title.clone(),
-        description: state.config.description.clone(),
-        posts,
-    })
-}
-
-async fn all_posts(
-    State(state): State<ArcState>,
-    Query(query): Query<QueryParams>,
-) -> AppResult<Json<Vec<PostMetadata>>> {
-    let posts = state
-        .posts
-        .get_max_n_post_metadata_with_optional_tag_sorted(query.num_posts, query.tag.as_ref())
-        .await?;
-
-    Ok(Json(posts))
-}
-
-async fn rss(
-    State(state): State<ArcState>,
-    Query(query): Query<QueryParams>,
-) -> AppResult<Response> {
-    if !state.config.rss.enable {
-        return Err(AppError::RssDisabled);
-    }
-
-    let posts = state
-        .posts
-        .get_all_posts_filtered(|metadata, _| {
-            !query
-                .tag
-                .as_ref()
-                .is_some_and(|tag| !metadata.tags.contains(tag))
-        })
-        .await?;
-
-    let mut channel = ChannelBuilder::default();
-    channel
-        .title(&state.config.title)
-        .link(state.config.rss.link.to_string())
-        .description(&state.config.description);
-    //TODO: .language()
-
-    for (metadata, content, _) in posts {
-        channel.item(
-            ItemBuilder::default()
-                .title(metadata.title)
-                .description(metadata.description)
-                .author(metadata.author)
-                .categories(
-                    metadata
-                        .tags
-                        .into_iter()
-                        .map(|tag| Category {
-                            name: tag,
-                            domain: None,
-                        })
-                        .collect::<Vec<Category>>(),
-                )
-                .pub_date(metadata.created_at.map(|date| date.to_rfc2822()))
-                .content(content)
-                .link(
-                    state
-                        .config
-                        .rss
-                        .link
-                        .join(&format!("/posts/{}", metadata.name))?
-                        .to_string(),
-                )
-                .build(),
-        );
-    }
-
-    let body = channel.build().to_string();
-    drop(channel);
-
-    Ok(([(header::CONTENT_TYPE, "text/xml")], body).into_response())
-}
-
-async fn post(State(state): State<ArcState>, Path(name): Path<String>) -> AppResult<Response> {
-    if name.ends_with(".md") && state.config.raw_access {
-        let mut file = tokio::fs::OpenOptions::new()
-            .read(true)
-            .open(state.config.dirs.posts.join(&name))
-            .await?;
-
-        let mut buf = Vec::new();
-        file.read_to_end(&mut buf).await?;
-
-        Ok(([("content-type", "text/plain")], buf).into_response())
-    } else {
-        let post = state.posts.get_post(&name).await?;
-        let page = PostTemplate {
-            meta: post.0,
-            rendered: post.1,
-            rendered_in: post.2,
-            markdown_access: state.config.raw_access,
-        };
-
-        Ok(page.into_response())
-    }
-}
+use crate::app::AppState;
+use crate::post::{MarkdownPosts, PostManager};
+use crate::templates::new_registry;
+use crate::templates::watcher::watch_templates;
 
 #[tokio::main]
 async fn main() -> eyre::Result<()> {
-    #[cfg(feature = "tokio-console")]
-    console_subscriber::init();
     color_eyre::install()?;
-    #[cfg(not(feature = "tokio-console"))]
-    tracing_subscriber::registry()
+    let reg = tracing_subscriber::registry();
+    #[cfg(feature = "tokio-console")]
+    let reg = reg
         .with(
+            EnvFilter::builder()
+                .with_default_directive(LevelFilter::TRACE.into())
+                .from_env_lossy(),
+        )
+        .with(console_subscriber::spawn());
+    #[cfg(not(feature = "tokio-console"))]
+    let reg = reg.with(
         EnvFilter::builder()
             .with_default_directive(LevelFilter::INFO.into())
             .from_env_lossy(),
-        )
-        .with(tracing_subscriber::fmt::layer())
-        .init();
+    );
+    reg.with(tracing_subscriber::fmt::layer()).init();
 
-    let config = config::load()
+    let config = Arc::new(
+        config::load()
             .await
-        .context("couldn't load configuration")?;
+            .context("couldn't load configuration")?,
+    );
 
     let socket_addr = SocketAddr::new(config.http.host, config.http.port);
 
     let mut tasks = JoinSet::new();
     let cancellation_token = CancellationToken::new();
 
-    let posts = if config.cache.enable {
-        if config.cache.persistence
-            && tokio::fs::try_exists(&config.cache.file)
-                .await
-                .with_context(|| {
-                    format!("failed to check if {} exists", config.cache.file.display())
-                })?
-        {
-            info!("loading cache from file");
-            let path = &config.cache.file;
-            let load_cache = async {
-                let mut cache_file = tokio::fs::File::open(&path)
-                    .await
-                    .context("failed to open cache file")?;
-                let serialized = if config.cache.compress {
-                    let cache_file = cache_file.into_std().await;
-                    tokio::task::spawn_blocking(move || {
-                        let mut buf = Vec::with_capacity(4096);
-                        zstd::stream::read::Decoder::new(cache_file)?.read_to_end(&mut buf)?;
-                        Ok::<_, std::io::Error>(buf)
-                    })
-                    .await
-                    .context("failed to join blocking thread")?
-                    .context("failed to read cache file")?
-                } else {
-                    let mut buf = Vec::with_capacity(4096);
-                    cache_file
-                        .read_to_end(&mut buf)
-                        .await
-                        .context("failed to read cache file")?;
-                    buf
-                };
-                let mut cache: Cache =
-                    bitcode::deserialize(serialized.as_slice()).context("failed to parse cache")?;
-                if cache.version() < CACHE_VERSION {
-                    warn!("cache version changed, clearing cache");
-                    cache = Cache::default();
+    let start = Instant::now();
+    // NOTE: use tokio::task::spawn_blocking if this ever turns into a concurrent task
+    let mut reg = new_registry(&config.dirs.custom_templates)
+        .context("failed to create handlebars registry")?;
+    reg.register_helper("date", Box::new(helpers::date));
+    reg.register_helper("duration", Box::new(helpers::duration));
+    debug!(duration = ?start.elapsed(), "registered all templates");
+
+    let reg = Arc::new(RwLock::new(reg));
+
+    let watcher_token = cancellation_token.child_token();
+
+    let posts = Arc::new(MarkdownPosts::new(Arc::clone(&config)).await?);
+    let state = AppState {
+        config: Arc::clone(&config),
+        posts: Arc::clone(&posts),
+        reg: Arc::clone(&reg),
     };
 
-                Ok::<PostManager, color_eyre::Report>(PostManager::new_with_cache(
-                    config.dirs.posts.clone(),
-                    config.render.clone(),
-                    cache,
-                ))
-            }
-            .await;
-            match load_cache {
-                Ok(posts) => posts,
-                Err(err) => {
-                    error!("failed to load cache: {}", err);
-                    info!("using empty cache");
-                    PostManager::new_with_cache(
-                        config.dirs.posts.clone(),
-                        config.render.clone(),
-                        Default::default(),
+    debug!("setting up watcher");
+    tasks.spawn(
+        watch_templates(
+            config.dirs.custom_templates.clone(),
+            watcher_token.clone(),
+            reg,
         )
-                }
-            }
-        } else {
-            PostManager::new_with_cache(
-                config.dirs.posts.clone(),
-                config.render.clone(),
-                Default::default(),
-            )
-        }
-    } else {
-        PostManager::new(config.dirs.posts.clone(), config.render.clone())
-    };
+        .instrument(info_span!("custom_template_watcher")),
+    );
 
-    let state = Arc::new(AppState { config, posts });
-
-    if state.config.cache.enable && state.config.cache.cleanup {
-        if let Some(t) = state.config.cache.cleanup_interval {
-            let state = Arc::clone(&state);
+    if config.cache.enable && config.cache.cleanup {
+        if let Some(millis) = config.cache.cleanup_interval {
+            let posts = Arc::clone(&posts);
             let token = cancellation_token.child_token();
             debug!("setting up cleanup task");
             tasks.spawn(async move {
-                let mut interval = tokio::time::interval(Duration::from_millis(t));
+                let mut interval = tokio::time::interval(Duration::from_millis(millis));
                 loop {
                     select! {
-                        _ = token.cancelled() => break,
+                        _ = token.cancelled() => break Ok(()),
                         _ = interval.tick() => {
-                            state.posts.cleanup().await
+                            posts.cleanup().await
                         }
                     }
                 }
             });
         } else {
-            state.posts.cleanup().await;
+            posts.cleanup().await;
         }
     }
 
-    let app = Router::new()
-        .route("/", get(index))
-        .route(
-            "/post/:name",
-            get(
-                |Path(name): Path<String>| async move { Redirect::to(&format!("/posts/{}", name)) },
-            ),
-        )
-        .route("/posts/:name", get(post))
-        .route("/posts", get(all_posts))
-        .route("/feed.xml", get(rss))
-        .nest_service("/static", ServeDir::new("static").precompressed_gzip())
-        .nest_service("/media", ServeDir::new("media"))
-        .layer(
-            TraceLayer::new_for_http()
-                .make_span_with(|request: &Request<_>| {
-                    info_span!(
-                        "request",
-                        method = ?request.method(),
-                        path = ?request.uri().path(),
-                    )
-                })
-                .on_response(|response: &Response<_>, duration: Duration, span: &Span| {
-                    let _ = span.enter();
-                    let status = response.status();
-                    info!(?status, ?duration, "response");
-                }),
-        )
-        .with_state(state.clone());
+    let app = app::new(&config).with_state(state.clone());
 
     let listener = TcpListener::bind(socket_addr)
         .await
@@ -342,13 +128,7 @@ async fn main() -> eyre::Result<()> {
     info!("listening on http://{}", local_addr);
 
     let sigint = signal::ctrl_c();
-    #[cfg(unix)]
-    let mut sigterm_handler =
-        tokio::signal::unix::signal(tokio::signal::unix::SignalKind::terminate())?;
-    #[cfg(unix)]
-    let sigterm = sigterm_handler.recv();
-    #[cfg(not(unix))] // TODO: kill all windows server users
-    let sigterm = std::future::pending::<()>();
+    let sigterm = platform::sigterm();
 
     let axum_token = cancellation_token.child_token();
 
@@ -376,50 +156,18 @@ async fn main() -> eyre::Result<()> {
         cancellation_token.cancel();
         server.await.context("failed to serve app")?;
         while let Some(task) = tasks.join_next().await {
-            task.context("failed to join task")?;
+            let res = task.context("failed to join task")?;
+            if let Err(err) = res {
+                error!("task failed with error: {err}");
+            }
         }
 
-        // write cache to file
-        let config = &state.config;
-        let posts = &state.posts;
-        if config.cache.enable
-            && config.cache.persistence
-            && let Some(cache) = posts.cache()
-        {
-            let path = &config.cache.file;
-            let serialized = bitcode::serialize(cache).context("failed to serialize cache")?;
-            let mut cache_file = tokio::fs::File::create(path)
-                .await
-                .with_context(|| format!("failed to open cache at {}", path.display()))?;
-            let compression_level = config.cache.compression_level;
-            if config.cache.compress {
-                let cache_file = cache_file.into_std().await;
-                tokio::task::spawn_blocking(move || {
-                    std::io::Write::write_all(
-                        &mut zstd::stream::write::Encoder::new(cache_file, compression_level)?
-                            .auto_finish(),
-                        &serialized,
-                    )
-                })
-                .await
-                .context("failed to join blocking thread")?
-            } else {
-                cache_file.write_all(&serialized).await
-            }
-            .context("failed to write cache to file")?;
-            info!("wrote cache to {}", path.display());
-        }
+        drop(state);
         Ok::<(), color_eyre::Report>(())
     };
 
     let sigint = signal::ctrl_c();
-    #[cfg(unix)]
-    let mut sigterm_handler =
-        tokio::signal::unix::signal(tokio::signal::unix::SignalKind::terminate())?;
-    #[cfg(unix)]
-    let sigterm = sigterm_handler.recv();
-    #[cfg(not(unix))]
-    let sigterm = std::future::pending::<()>();
+    let sigterm = platform::sigterm();
 
     tokio::select! {
         result = cleanup => {

src/platform.rs

@@ -0,0 +1,9 @@
+pub async fn sigterm() -> Result<Option<()>, std::io::Error> {
+    #[cfg(unix)]
+    let mut sigterm_handler =
+        tokio::signal::unix::signal(tokio::signal::unix::SignalKind::terminate())?;
+    #[cfg(unix)]
+    return Ok(sigterm_handler.recv().await);
+    #[cfg(not(unix))]
+    std::future::pending::<None>().await
+}

src/post/cache.rs

@@ -1,12 +1,14 @@
 use std::hash::{DefaultHasher, Hash, Hasher};
+use std::io::Read;
 
+use crate::config::{Config, RenderConfig};
+use crate::post::PostMetadata;
+use color_eyre::eyre::{self, Context};
 use scc::HashMap;
 use serde::{Deserialize, Serialize};
+use tokio::io::AsyncReadExt;
 use tracing::{debug, instrument};
 
-use crate::config::RenderConfig;
-use crate::post::PostMetadata;
-
 /// do not persist cache if this version number changed
 pub const CACHE_VERSION: u16 = 2;
 
@@ -133,3 +135,29 @@ impl Cache {
         self.1
     }
 }
+
+pub(crate) async fn load_cache(config: &Config) -> Result<Cache, eyre::Report> {
+    let path = &config.cache.file;
+    let mut cache_file = tokio::fs::File::open(&path)
+        .await
+        .context("failed to open cache file")?;
+    let serialized = if config.cache.compress {
+        let cache_file = cache_file.into_std().await;
+        tokio::task::spawn_blocking(move || {
+            let mut buf = Vec::with_capacity(4096);
+            zstd::stream::read::Decoder::new(cache_file)?.read_to_end(&mut buf)?;
+            Ok::<_, std::io::Error>(buf)
+        })
+        .await?
+        .context("failed to read cache file")?
+    } else {
+        let mut buf = Vec::with_capacity(4096);
+        cache_file
+            .read_to_end(&mut buf)
+            .await
+            .context("failed to read cache file")?;
+        buf
+    };
+
+    bitcode::deserialize(serialized.as_slice()).context("failed to parse cache")
+}

src/post/markdown_posts.rs

@@ -0,0 +1,348 @@
+use std::collections::BTreeSet;
+use std::io::{self, Write};
+use std::ops::Deref;
+use std::path::Path;
+use std::time::Duration;
+use std::time::Instant;
+use std::time::SystemTime;
+
+use axum::http::HeaderValue;
+use chrono::{DateTime, Utc};
+use color_eyre::eyre::{self, Context};
+use fronma::parser::{parse, ParsedData};
+use serde::Deserialize;
+use tokio::fs;
+use tokio::io::AsyncReadExt;
+use tracing::{error, info, warn};
+
+use crate::config::Config;
+use crate::markdown_render::render;
+use crate::post::cache::{load_cache, Cache, CACHE_VERSION};
+use crate::post::{PostError, PostManager, PostMetadata, RenderStats, ReturnedPost};
+use crate::systemtime_as_secs::as_secs;
+
+#[derive(Deserialize)]
+struct FrontMatter {
+    pub title: String,
+    pub description: String,
+    pub author: String,
+    pub icon: Option<String>,
+    pub icon_alt: Option<String>,
+    pub color: Option<String>,
+    pub created_at: Option<DateTime<Utc>>,
+    pub modified_at: Option<DateTime<Utc>>,
+    #[serde(default)]
+    pub tags: BTreeSet<String>,
+}
+
+impl FrontMatter {
+    pub fn into_full(
+        self,
+        name: String,
+        created: Option<SystemTime>,
+        modified: Option<SystemTime>,
+    ) -> PostMetadata {
+        PostMetadata {
+            name,
+            title: self.title,
+            description: self.description,
+            author: self.author,
+            icon: self.icon,
+            icon_alt: self.icon_alt,
+            color: self.color,
+            created_at: self.created_at.or_else(|| created.map(|t| t.into())),
+            modified_at: self.modified_at.or_else(|| modified.map(|t| t.into())),
+            tags: self.tags.into_iter().collect(),
+        }
+    }
+}
+pub struct MarkdownPosts<C>
+where
+    C: Deref<Target = Config>,
+{
+    cache: Option<Cache>,
+    config: C,
+}
+
+impl<C> MarkdownPosts<C>
+where
+    C: Deref<Target = Config>,
+{
+    pub async fn new(config: C) -> eyre::Result<MarkdownPosts<C>> {
+        if config.cache.enable {
+            if config.cache.persistence && tokio::fs::try_exists(&config.cache.file).await? {
+                info!("loading cache from file");
+                let mut cache = load_cache(&config).await.unwrap_or_else(|err| {
+                    error!("failed to load cache: {}", err);
+                    info!("using empty cache");
+                    Default::default()
+                });
+
+                if cache.version() < CACHE_VERSION {
+                    warn!("cache version changed, clearing cache");
+                    cache = Default::default();
+                };
+
+                Ok(Self {
+                    cache: Some(cache),
+                    config,
+                })
+            } else {
+                Ok(Self {
+                    cache: Some(Default::default()),
+                    config,
+                })
+            }
+        } else {
+            Ok(Self {
+                cache: None,
+                config,
+            })
+        }
+    }
+
+    async fn parse_and_render(
+        &self,
+        name: String,
+        path: impl AsRef<Path>,
+    ) -> Result<(PostMetadata, String, (Duration, Duration)), PostError> {
+        let parsing_start = Instant::now();
+        let mut file = match tokio::fs::OpenOptions::new().read(true).open(&path).await {
+            Ok(val) => val,
+            Err(err) => match err.kind() {
+                io::ErrorKind::NotFound => return Err(PostError::NotFound(name)),
+                _ => return Err(PostError::IoError(err)),
+            },
+        };
+        let stat = file.metadata().await?;
+        let modified = stat.modified()?;
+        let created = stat.created().ok();
+
+        let mut content = String::with_capacity(stat.len() as usize);
+        file.read_to_string(&mut content).await?;
+
+        let ParsedData { headers, body } = parse::<FrontMatter>(&content)?;
+        let metadata = headers.into_full(name.to_owned(), created, Some(modified));
+        let parsing = parsing_start.elapsed();
+
+        let before_render = Instant::now();
+        let post = render(body, &self.config.render);
+        let rendering = before_render.elapsed();
+
+        if let Some(cache) = self.cache.as_ref() {
+            cache
+                .insert(
+                    name.to_string(),
+                    metadata.clone(),
+                    as_secs(&modified),
+                    post.clone(),
+                    &self.config.render,
+                )
+                .await
+                .unwrap_or_else(|err| warn!("failed to insert {:?} into cache", err.0))
+        };
+
+        Ok((metadata, post, (parsing, rendering)))
+    }
+
+    fn cache(&self) -> Option<&Cache> {
+        self.cache.as_ref()
+    }
+
+    fn try_drop(&mut self) -> Result<(), eyre::Report> {
+        // write cache to file
+        let config = &self.config.cache;
+        if config.enable
+            && config.persistence
+            && let Some(cache) = self.cache()
+        {
+            let path = &config.file;
+            let serialized = bitcode::serialize(cache).context("failed to serialize cache")?;
+            let mut cache_file = std::fs::File::create(path)
+                .with_context(|| format!("failed to open cache at {}", path.display()))?;
+            let compression_level = config.compression_level;
+            if config.compress {
+                std::io::Write::write_all(
+                    &mut zstd::stream::write::Encoder::new(cache_file, compression_level)?
+                        .auto_finish(),
+                    &serialized,
+                )
+            } else {
+                cache_file.write_all(&serialized)
+            }
+            .context("failed to write cache to file")?;
+            info!("wrote cache to {}", path.display());
+        }
+        Ok(())
+    }
+}
+
+impl<C> Drop for MarkdownPosts<C>
+where
+    C: Deref<Target = Config>,
+{
+    fn drop(&mut self) {
+        self.try_drop().unwrap()
+    }
+}
+
+impl<C> PostManager for MarkdownPosts<C>
+where
+    C: Deref<Target = Config>,
+{
+    async fn get_all_post_metadata(
+        &self,
+        filter: impl Fn(&PostMetadata) -> bool,
+    ) -> Result<Vec<PostMetadata>, PostError> {
+        let mut posts = Vec::new();
+
+        let mut read_dir = fs::read_dir(&self.config.dirs.posts).await?;
+        while let Some(entry) = read_dir.next_entry().await? {
+            let path = entry.path();
+            let stat = fs::metadata(&path).await?;
+
+            if stat.is_file() && path.extension().is_some_and(|ext| ext == "md") {
+                let mtime = as_secs(&stat.modified()?);
+                // TODO. this?
+                let name = path
+                    .clone()
+                    .file_stem()
+                    .unwrap()
+                    .to_string_lossy()
+                    .to_string();
+
+                if let Some(cache) = self.cache.as_ref()
+                    && let Some(hit) = cache.lookup_metadata(&name, mtime).await
+                    && filter(&hit)
+                {
+                    posts.push(hit);
+                } else {
+                    match self.parse_and_render(name, path).await {
+                        Ok((metadata, ..)) => {
+                            if filter(&metadata) {
+                                posts.push(metadata);
+                            }
+                        }
+                        Err(err) => match err {
+                            PostError::IoError(ref io_err)
+                                if matches!(io_err.kind(), io::ErrorKind::NotFound) =>
+                            {
+                                warn!("TOCTOU: {}", err)
+                            }
+                            _ => return Err(err),
+                        },
+                    }
+                }
+            }
+        }
+
+        Ok(posts)
+    }
+
+    async fn get_all_posts(
+        &self,
+        filter: impl Fn(&PostMetadata, &str) -> bool,
+    ) -> Result<Vec<(PostMetadata, String, RenderStats)>, PostError> {
+        let mut posts = Vec::new();
+
+        let mut read_dir = fs::read_dir(&self.config.dirs.posts).await?;
+        while let Some(entry) = read_dir.next_entry().await? {
+            let path = entry.path();
+            let stat = fs::metadata(&path).await?;
+
+            if stat.is_file() && path.extension().is_some_and(|ext| ext == "md") {
+                let name = path
+                    .clone()
+                    .file_stem()
+                    .unwrap()
+                    .to_string_lossy()
+                    .to_string();
+
+                let post = self.get_post(&name).await?;
+                if let ReturnedPost::Rendered(meta, content, stats) = post
+                    && filter(&meta, &content)
+                {
+                    posts.push((meta, content, stats));
+                }
+            }
+        }
+
+        Ok(posts)
+    }
+
+    async fn get_post(&self, name: &str) -> Result<ReturnedPost, PostError> {
+        if self.config.markdown_access && name.ends_with(".md") {
+            let path = self.config.dirs.posts.join(name);
+
+            let mut file = match tokio::fs::OpenOptions::new().read(true).open(&path).await {
+                Ok(value) => value,
+                Err(err) => match err.kind() {
+                    io::ErrorKind::NotFound => {
+                        if let Some(cache) = self.cache.as_ref() {
+                            cache.remove(name).await;
+                        }
+                        return Err(PostError::NotFound(name.to_string()));
+                    }
+                    _ => return Err(PostError::IoError(err)),
+                },
+            };
+
+            let mut buf = Vec::with_capacity(4096);
+
+            file.read_to_end(&mut buf).await?;
+
+            Ok(ReturnedPost::Raw(
+                buf,
+                HeaderValue::from_static("text/plain"),
+            ))
+        } else {
+            let start = Instant::now();
+            let path = self.config.dirs.posts.join(name.to_owned() + ".md");
+
+            let stat = match tokio::fs::metadata(&path).await {
+                Ok(value) => value,
+                Err(err) => match err.kind() {
+                    io::ErrorKind::NotFound => {
+                        if let Some(cache) = self.cache.as_ref() {
+                            cache.remove(name).await;
+                        }
+                        return Err(PostError::NotFound(name.to_string()));
+                    }
+                    _ => return Err(PostError::IoError(err)),
+                },
+            };
+            let mtime = as_secs(&stat.modified()?);
+
+            if let Some(cache) = self.cache.as_ref()
+                && let Some(hit) = cache.lookup(name, mtime, &self.config.render).await
+            {
+                Ok(ReturnedPost::Rendered(
+                    hit.metadata,
+                    hit.rendered,
+                    RenderStats::Cached(start.elapsed()),
+                ))
+            } else {
+                let (metadata, rendered, stats) =
+                    self.parse_and_render(name.to_string(), path).await?;
+                Ok(ReturnedPost::Rendered(
+                    metadata,
+                    rendered,
+                    RenderStats::ParsedAndRendered(start.elapsed(), stats.0, stats.1),
+                ))
+            }
+        }
+    }
+
+    async fn cleanup(&self) {
+        if let Some(cache) = self.cache.as_ref() {
+            cache
+                .cleanup(|name| {
+                    std::fs::metadata(self.config.dirs.posts.join(name.to_owned() + ".md"))
+                        .ok()
+                        .and_then(|metadata| metadata.modified().ok())
+                        .map(|mtime| as_secs(&mtime))
+                })
+                .await
+        }
+    }
+}

src/post/mod.rs

@@ -1,54 +1,14 @@
 pub mod cache;
+pub mod markdown_posts;
 
-use std::collections::BTreeSet;
-use std::io;
-use std::path::{Path, PathBuf};
-use std::time::{Duration, Instant, SystemTime};
+use std::time::Duration;
 
+use axum::http::HeaderValue;
 use chrono::{DateTime, Utc};
-use fronma::parser::{parse, ParsedData};
 use serde::{Deserialize, Serialize};
-use tokio::fs;
-use tokio::io::AsyncReadExt;
-use tracing::warn;
 
-use crate::config::RenderConfig;
-use crate::markdown_render::render;
-use crate::post::cache::Cache;
-use crate::systemtime_as_secs::as_secs;
-use crate::PostError;
-
-#[derive(Deserialize)]
-struct FrontMatter {
-    pub title: String,
-    pub description: String,
-    pub author: String,
-    pub icon: Option<String>,
-    pub created_at: Option<DateTime<Utc>>,
-    pub modified_at: Option<DateTime<Utc>>,
-    #[serde(default)]
-    pub tags: BTreeSet<String>,
-}
-
-impl FrontMatter {
-    pub fn into_full(
-        self,
-        name: String,
-        created: Option<SystemTime>,
-        modified: Option<SystemTime>,
-    ) -> PostMetadata {
-        PostMetadata {
-            name,
-            title: self.title,
-            description: self.description,
-            author: self.author,
-            icon: self.icon,
-            created_at: self.created_at.or_else(|| created.map(|t| t.into())),
-            modified_at: self.modified_at.or_else(|| modified.map(|t| t.into())),
-            tags: self.tags.into_iter().collect(),
-        }
-    }
-}
+use crate::error::PostError;
+pub use crate::post::markdown_posts::MarkdownPosts;
 
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub struct PostMetadata {
@@ -57,173 +17,48 @@ pub struct PostMetadata {
     pub description: String,
     pub author: String,
     pub icon: Option<String>,
+    pub icon_alt: Option<String>,
+    pub color: Option<String>,
     pub created_at: Option<DateTime<Utc>>,
     pub modified_at: Option<DateTime<Utc>>,
     pub tags: Vec<String>,
 }
 
-#[allow(unused)]
+#[derive(Serialize)]
 pub enum RenderStats {
     Cached(Duration),
     // format: Total, Parsed in, Rendered in
     ParsedAndRendered(Duration, Duration, Duration),
 }
 
-#[derive(Clone)]
-pub struct PostManager {
-    dir: PathBuf,
-    cache: Option<Cache>,
-    config: RenderConfig,
+#[allow(clippy::large_enum_variant)] // Raw will be returned very rarely
+pub enum ReturnedPost {
+    Rendered(PostMetadata, String, RenderStats),
+    Raw(Vec<u8>, HeaderValue),
 }
 
-impl PostManager {
-    pub fn new(dir: PathBuf, config: RenderConfig) -> PostManager {
-        PostManager {
-            dir,
-            cache: None,
-            config,
-        }
-    }
-
-    pub fn new_with_cache(dir: PathBuf, config: RenderConfig, cache: Cache) -> PostManager {
-        PostManager {
-            dir,
-            cache: Some(cache),
-            config,
-        }
-    }
-
-    async fn parse_and_render(
-        &self,
-        name: String,
-        path: impl AsRef<Path>,
-    ) -> Result<(PostMetadata, String, (Duration, Duration)), PostError> {
-        let parsing_start = Instant::now();
-        let mut file = match tokio::fs::OpenOptions::new().read(true).open(&path).await {
-            Ok(val) => val,
-            Err(err) => match err.kind() {
-                io::ErrorKind::NotFound => return Err(PostError::NotFound(name)),
-                _ => return Err(PostError::IoError(err)),
-            },
-        };
-        let stat = file.metadata().await?;
-        let modified = stat.modified()?;
-        let created = stat.created().ok();
-
-        let mut content = String::with_capacity(stat.len() as usize);
-        file.read_to_string(&mut content).await?;
-
-        let ParsedData { headers, body } = parse::<FrontMatter>(&content)?;
-        let metadata = headers.into_full(name.to_owned(), created, Some(modified));
-        let parsing = parsing_start.elapsed();
-
-        let before_render = Instant::now();
-        let post = render(body, &self.config);
-        let rendering = before_render.elapsed();
-
-        if let Some(cache) = self.cache.as_ref() {
-            cache
-                .insert(
-                    name.to_string(),
-                    metadata.clone(),
-                    as_secs(&modified),
-                    post.clone(),
-                    &self.config,
-                )
-                .await
-                .unwrap_or_else(|err| warn!("failed to insert {:?} into cache", err.0))
-        };
-
-        Ok((metadata, post, (parsing, rendering)))
-    }
-
-    pub async fn get_all_post_metadata_filtered(
+pub trait PostManager {
+    async fn get_all_post_metadata(
         &self,
         filter: impl Fn(&PostMetadata) -> bool,
     ) -> Result<Vec<PostMetadata>, PostError> {
-        let mut posts = Vec::new();
-
-        let mut read_dir = fs::read_dir(&self.dir).await?;
-        while let Some(entry) = read_dir.next_entry().await? {
-            let path = entry.path();
-            let stat = fs::metadata(&path).await?;
-
-            if stat.is_file() && path.extension().is_some_and(|ext| ext == "md") {
-                let mtime = as_secs(&stat.modified()?);
-                // TODO. this?
-                let name = path
-                    .clone()
-                    .file_stem()
-                    .unwrap()
-                    .to_string_lossy()
-                    .to_string();
-
-                if let Some(cache) = self.cache.as_ref()
-                    && let Some(hit) = cache.lookup_metadata(&name, mtime).await
-                    && filter(&hit)
-                {
-                    posts.push(hit);
-                } else {
-                    match self.parse_and_render(name, path).await {
-                        Ok((metadata, ..)) => {
-                            if filter(&metadata) {
-                                posts.push(metadata);
-                            }
-                        }
-                        Err(err) => match err {
-                            PostError::IoError(ref io_err)
-                                if matches!(io_err.kind(), io::ErrorKind::NotFound) =>
-                            {
-                                warn!("TOCTOU: {}", err)
-                            }
-                            _ => return Err(err),
-                        },
-                    }
-                }
-            }
+        self.get_all_posts(|m, _| filter(m))
+            .await
+            .map(|vec| vec.into_iter().map(|(meta, ..)| meta).collect())
     }
 
-        Ok(posts)
-    }
-
-    pub async fn get_all_posts_filtered(
+    async fn get_all_posts(
         &self,
         filter: impl Fn(&PostMetadata, &str) -> bool,
-    ) -> Result<Vec<(PostMetadata, String, RenderStats)>, PostError> {
-        let mut posts = Vec::new();
+    ) -> Result<Vec<(PostMetadata, String, RenderStats)>, PostError>;
 
-        let mut read_dir = fs::read_dir(&self.dir).await?;
-        while let Some(entry) = read_dir.next_entry().await? {
-            let path = entry.path();
-            let stat = fs::metadata(&path).await?;
-
-            if stat.is_file() && path.extension().is_some_and(|ext| ext == "md") {
-                let name = path
-                    .clone()
-                    .file_stem()
-                    .unwrap()
-                    .to_string_lossy()
-                    .to_string();
-
-                let post = self.get_post(&name).await?;
-                if filter(&post.0, &post.1) {
-                    posts.push(post);
-                }
-            }
-        }
-
-        Ok(posts)
-    }
-
-    pub async fn get_max_n_post_metadata_with_optional_tag_sorted(
+    async fn get_max_n_post_metadata_with_optional_tag_sorted(
         &self,
         n: Option<usize>,
         tag: Option<&String>,
     ) -> Result<Vec<PostMetadata>, PostError> {
         let mut posts = self
-            .get_all_post_metadata_filtered(|metadata| {
-                !tag.is_some_and(|tag| !metadata.tags.contains(tag))
-            })
+            .get_all_post_metadata(|metadata| !tag.is_some_and(|tag| !metadata.tags.contains(tag)))
             .await?;
         // we still want some semblance of order if created_at is None so sort by mtime as well
         posts.sort_unstable_by_key(|metadata| metadata.modified_at.unwrap_or_default());
@@ -236,59 +71,15 @@ impl PostManager {
         Ok(posts)
     }
 
-    pub async fn get_post(
-        &self,
-        name: &str,
-    ) -> Result<(PostMetadata, String, RenderStats), PostError> {
-        let start = Instant::now();
-        let path = self.dir.join(name.to_owned() + ".md");
-
-        let stat = match tokio::fs::metadata(&path).await {
-            Ok(value) => value,
-            Err(err) => match err.kind() {
-                io::ErrorKind::NotFound => {
-                    if let Some(cache) = self.cache.as_ref() {
-                        cache.remove(name).await;
-                    }
-                    return Err(PostError::NotFound(name.to_string()));
-                }
-                _ => return Err(PostError::IoError(err)),
-            },
-        };
-        let mtime = as_secs(&stat.modified()?);
-
-        if let Some(cache) = self.cache.as_ref()
-            && let Some(hit) = cache.lookup(name, mtime, &self.config).await
-        {
-            Ok((
-                hit.metadata,
-                hit.rendered,
-                RenderStats::Cached(start.elapsed()),
-            ))
-        } else {
-            let (metadata, rendered, stats) = self.parse_and_render(name.to_string(), path).await?;
-            Ok((
-                metadata,
-                rendered,
-                RenderStats::ParsedAndRendered(start.elapsed(), stats.0, stats.1),
-            ))
+    #[allow(unused)]
+    async fn get_post_metadata(&self, name: &str) -> Result<PostMetadata, PostError> {
+        match self.get_post(name).await? {
+            ReturnedPost::Rendered(metadata, ..) => Ok(metadata),
+            ReturnedPost::Raw(..) => Err(PostError::NotFound(name.to_string())),
         }
     }
 
-    pub fn cache(&self) -> Option<&Cache> {
-        self.cache.as_ref()
-    }
+    async fn get_post(&self, name: &str) -> Result<ReturnedPost, PostError>;
 
-    pub async fn cleanup(&self) {
-        if let Some(cache) = self.cache.as_ref() {
-            cache
-                .cleanup(|name| {
-                    std::fs::metadata(self.dir.join(name.to_owned() + ".md"))
-                        .ok()
-                        .and_then(|metadata| metadata.modified().ok())
-                        .map(|mtime| as_secs(&mtime))
-                })
-                .await
-        }
-    }
+    async fn cleanup(&self);
 }

src/serve_dir_included.rs

@@ -0,0 +1,81 @@
+use std::convert::Infallible;
+use std::str::pattern::Pattern;
+
+use axum::extract::Request;
+use axum::http::{header, StatusCode};
+use axum::response::{IntoResponse, Response};
+use include_dir::{Dir, DirEntry};
+use tracing::{debug, trace};
+
+fn if_empty<'a>(a: &'a str, b: &'a str) -> &'a str {
+    if a.is_empty() {
+        b
+    } else {
+        a
+    }
+}
+
+fn remove_prefixes(mut src: &str, pat: (impl Pattern + Copy)) -> &str {
+    while let Some(removed) = src.strip_prefix(pat) {
+        src = removed;
+    }
+    src
+}
+
+fn from_included_file(file: &'static include_dir::File<'static>) -> Response {
+    let mime_type = mime_guess::from_path(file.path()).first_or_octet_stream();
+
+    (
+        [(
+            header::CONTENT_TYPE,
+            header::HeaderValue::try_from(mime_type.essence_str()).expect("invalid mime type"),
+        )],
+        file.contents(),
+    )
+        .into_response()
+}
+
+pub async fn handle(
+    req: Request,
+    included_dir: &'static Dir<'static>,
+) -> Result<Response, Infallible> {
+    #[cfg(windows)]
+    compile_error!("this is not safe");
+
+    let path = req.uri().path();
+
+    let has_dotdot = path.split('/').any(|seg| seg == "..");
+    if has_dotdot {
+        return Ok(StatusCode::NOT_FOUND.into_response());
+    }
+
+    let relative_path = if_empty(remove_prefixes(path, '/'), ".");
+
+    match included_dir.get_entry(relative_path) {
+        Some(DirEntry::Dir(dir)) => {
+            trace!("{relative_path:?} is a directory, trying \"index.html\"");
+            if let Some(file) = dir.get_file("index.html") {
+                debug!("{path:?} (index.html) serving from included dir");
+                return Ok(from_included_file(file));
+            } else {
+                trace!("\"index.html\" not found in {relative_path:?} in included files");
+            }
+        }
+        None if relative_path == "." => {
+            trace!("requested root, trying \"index.html\"");
+            if let Some(file) = included_dir.get_file("index.html") {
+                debug!("{path:?} (index.html) serving from included dir");
+                return Ok(from_included_file(file));
+            } else {
+                trace!("\"index.html\" not found in included files");
+            }
+        }
+        Some(DirEntry::File(file)) => {
+            debug!("{path:?} serving from included dir");
+            return Ok(from_included_file(file));
+        }
+        None => trace!("{relative_path:?} not found in included files"),
+    };
+
+    Ok(StatusCode::NOT_FOUND.into_response())
+}

src/templates/mod.rs

@@ -0,0 +1,186 @@
+pub mod watcher;
+
+use std::{io, path::Path};
+
+use handlebars::{Handlebars, Template};
+use include_dir::{include_dir, Dir};
+use thiserror::Error;
+use tracing::{debug, error, info_span, trace};
+
+const TEMPLATES: Dir<'static> = include_dir!("$CARGO_MANIFEST_DIR/templates");
+const PARTIALS: Dir<'static> = include_dir!("$CARGO_MANIFEST_DIR/partials");
+
+#[derive(Error, Debug)]
+#[allow(clippy::enum_variant_names)]
+pub enum TemplateError {
+    #[error(transparent)]
+    IoError(#[from] std::io::Error),
+    #[error("file doesn't contain valid UTF-8")]
+    UTF8Error,
+    #[error(transparent)]
+    TemplateError(#[from] handlebars::TemplateError),
+}
+
+fn is_ext(path: impl AsRef<Path>, ext: &str) -> bool {
+    match path.as_ref().extension() {
+        Some(path_ext) if path_ext != ext => false,
+        None => false,
+        _ => true,
+    }
+}
+
+ fn get_template_name(path: &Path) -> Option<&str> {
+    if !is_ext(path, "hbs") {
+        return None;
+    }
+
+    path.file_stem()?.to_str()
+}
+
+fn register_included_file(
+    file: &include_dir::File<'_>,
+    name: &str,
+    registry: &mut Handlebars,
+) -> Result<(), TemplateError> {
+    let template = compile_included_file(file)?;
+    registry.register_template(name, template);
+    Ok(())
+}
+
+fn register_path(
+    path: impl AsRef<std::path::Path>,
+    name: &str,
+    registry: &mut Handlebars<'_>,
+) -> Result<(), TemplateError> {
+    let template = compile_path(path)?;
+    registry.register_template(name, template);
+    Ok(())
+}
+
+fn register_partial(
+    file: &include_dir::File<'_>,
+    name: &str,
+    registry: &mut Handlebars,
+) -> Result<(), TemplateError> {
+    registry.register_partial(name, file.contents_utf8().ok_or(TemplateError::UTF8Error)?)?;
+    Ok(())
+}
+
+fn compile_included_file(file: &include_dir::File<'_>) -> Result<Template, TemplateError> {
+    let contents = file.contents_utf8().ok_or(TemplateError::UTF8Error)?;
+
+    let template = Template::compile(contents)?;
+    Ok(template)
+}
+
+fn compile_path(path: impl AsRef<std::path::Path>) -> Result<Template, TemplateError> {
+    use std::fs::OpenOptions;
+    use std::io::Read;
+
+    let mut file = OpenOptions::new().read(true).open(path)?;
+    let mut buf = String::new();
+    file.read_to_string(&mut buf)?;
+
+    let template = Template::compile(&buf)?;
+    Ok(template)
+}
+
+ async fn compile_path_async_io(
+    path: impl AsRef<std::path::Path>,
+) -> Result<Template, TemplateError> {
+    use tokio::fs::OpenOptions;
+    use tokio::io::AsyncReadExt;
+
+    let mut file = OpenOptions::new().read(true).open(path).await?;
+    let mut buf = String::new();
+    file.read_to_string(&mut buf).await?;
+
+    let template = Template::compile(&buf)?;
+    Ok(template)
+}
+
+pub fn new_registry<'a>(custom_templates_path: impl AsRef<Path>) -> io::Result<Handlebars<'a>> {
+    let mut reg = Handlebars::new();
+
+    for entry in TEMPLATES.entries() {
+        let file = match entry.as_file() {
+            Some(file) => file,
+            None => continue,
+        };
+
+        let span = info_span!("register_included_template", path = ?file.path());
+        let _handle = span.enter();
+
+        let name = match get_template_name(file.path()) {
+            Some(v) => v,
+            None => {
+                trace!("skipping file");
+                continue;
+            }
+        };
+
+        match register_included_file(file, name, &mut reg) {
+            Ok(()) => debug!("registered template {name:?}"),
+            Err(err) => error!("error while registering template: {err}"),
+        };
+    }
+
+    for entry in PARTIALS.entries() {
+        let file = match entry.as_file() {
+            Some(file) => file,
+            None => continue,
+        };
+
+        let span = info_span!("register_partial", path = ?file.path());
+        let _handle = span.enter();
+
+        let name = match get_template_name(file.path()) {
+            Some(v) => v,
+            None => {
+                trace!("skipping file");
+                continue;
+            }
+        };
+
+        match register_partial(file, name, &mut reg) {
+            Ok(()) => debug!("registered partial {name:?}"),
+            Err(err) => error!("error while registering partial: {err}"),
+        };
+    }
+
+    let read_dir = match std::fs::read_dir(custom_templates_path) {
+        Ok(v) => v,
+        Err(err) => match err.kind() {
+            io::ErrorKind::NotFound => return Ok(reg),
+            _ => panic!("{:?}", err),
+        },
+    };
+    for entry in read_dir {
+        let entry = entry.unwrap();
+
+        let file_type = entry.file_type()?;
+        if !file_type.is_file() {
+            continue;
+        }
+
+        let path = entry.path();
+
+        let span = info_span!("register_custom_template", ?path);
+        let _handle = span.enter();
+
+        let name = match get_template_name(&path) {
+            Some(v) => v,
+            None => {
+                trace!("skipping file");
+                continue;
+            }
+        };
+
+        match register_path(&path, name, &mut reg) {
+            Ok(()) => debug!("registered template {name:?}"),
+            Err(err) => error!("error while registering template: {err}"),
+        };
+    }
+
+    Ok(reg)
+}

src/templates/watcher.rs

@@ -0,0 +1,126 @@
+use std::path::Path;
+use std::sync::Arc;
+use std::time::Duration;
+
+use handlebars::{Handlebars, Template};
+use notify_debouncer_full::notify::{self, Watcher};
+use notify_debouncer_full::{new_debouncer, DebouncedEvent};
+use tokio::select;
+use tokio::sync::RwLock;
+use tokio_util::sync::CancellationToken;
+use tracing::{debug, error, info, trace, trace_span};
+
+use crate::templates::*;
+
+async fn process_event(
+    event: DebouncedEvent,
+    templates: &mut Vec<(String, Template)>,
+) -> Result<(), Box<dyn std::error::Error>> {
+    match event.kind {
+        notify::EventKind::Create(notify::event::CreateKind::File)
+        | notify::EventKind::Modify(_) => {
+            for path in &event.paths {
+                let span = trace_span!("modify_event", ?path);
+                let _handle = span.enter();
+
+                let template_name = match get_template_name(path) {
+                    Some(v) => v,
+                    None => {
+                        trace!("skipping event");
+                        continue;
+                    }
+                };
+
+                trace!("processing recompilation");
+                let compiled = compile_path_async_io(path).await?;
+                trace!("compiled template {template_name:?}");
+                templates.push((template_name.to_owned(), compiled));
+            }
+        }
+        notify::EventKind::Remove(notify::event::RemoveKind::File) => {
+            for path in &event.paths {
+                let span = trace_span!("remove_event", ?path);
+                let _handle = span.enter();
+
+                let (file_name, template_name) = match path
+                    .file_name()
+                    .and_then(|o| o.to_str())
+                    .and_then(|file_name| {
+                        get_template_name(Path::new(file_name))
+                            .map(|template_name| (file_name, template_name))
+                    }) {
+                    Some(v) => v,
+                    None => {
+                        trace!("skipping event");
+                        continue;
+                    }
+                };
+
+                trace!("processing removal");
+                let file = TEMPLATES.get_file(file_name);
+                if let Some(file) = file {
+                    let compiled = compile_included_file(file)?;
+                    trace!("compiled template {template_name:?}");
+                    templates.push((template_name.to_owned(), compiled));
+                }
+            }
+        }
+        _ => {}
+    };
+
+    Ok(())
+}
+
+pub async fn watch_templates<'a>(
+    path: impl AsRef<Path>,
+    watcher_token: CancellationToken,
+    reg: Arc<RwLock<Handlebars<'a>>>,
+) -> Result<(), Box<dyn std::error::Error + Send + Sync + 'static>> {
+    let path = path.as_ref();
+
+    let (tx, mut rx) = tokio::sync::mpsc::channel(1);
+
+    let mut debouncer = new_debouncer(Duration::from_millis(100), None, move |events| {
+        tx.blocking_send(events)
+            .expect("failed to send message over channel")
+    })?;
+
+    debouncer
+        .watcher()
+        .watch(path, notify::RecursiveMode::NonRecursive)?;
+
+    'event_loop: while let Some(events) = select! {
+        _ = watcher_token.cancelled() => {
+            debug!("exiting watcher loop");
+            break 'event_loop;
+        },
+        events = rx.recv() => events
+    } {
+        let events = match events {
+            Ok(events) => events,
+            Err(err) => {
+                error!("error getting events: {err:?}");
+                continue;
+            }
+        };
+
+        let mut templates = Vec::new();
+
+        for event in events {
+            trace!("file event: {event:?}");
+            if let Err(err) = process_event(event, &mut templates).await {
+                error!("error while processing event: {err}");
+            }
+        }
+
+        let mut reg = reg.write().await;
+        for template in templates.into_iter() {
+            debug!("registered template {}", template.0);
+            reg.register_template(&template.0, template.1);
+        }
+        drop(reg);
+        info!("updated custom templates");
+    }
+
+    Ok(())
+}

static/date.js

@@ -0,0 +1,7 @@
+function replaceDates() {
+	for (let el of document.querySelectorAll(".date-rfc3339")) {
+		let date = new Date(Date.parse(el.textContent));
+		el.textContent = date.toLocaleString();
+		el.classList.remove("date-rfc3339");
+	}
+}

static/main.js

@@ -0,0 +1,12 @@
+replaceDates();
+
+let form = document.getElementById("sort");
+if (form) {
+	form.style.display = "block";
+	let postsByDate = document.getElementById("posts");
+	let postsByName = document.createElement("div");
+	populateByName(postsByDate, postsByName);
+	postsByDate.parentNode.appendChild(postsByName);
+	handleSort(form, postsByDate, postsByName);
+	sort(form.sort.value, postsByDate, postsByName);
+}

static/post.css

@@ -54,3 +54,22 @@ th,
 td:nth-child(1) {
 	word-break: keep-all;
 }
+
+blockquote {
+	margin-left: 1em;
+	padding-left: 1.5em;
+	border-left: 0.5em solid;
+	border-color: var(--blue);
+	& > blockquote {
+		border-color: var(--mauve);
+		& > blockquote {
+			border-color: var(--pink);
+			& > blockquote {
+				border-color: var(--rosewater);
+				& > blockquote {
+					border-color: var(--text);
+				}
+			}
+		}
+	}
+}

static/sort.js

@@ -0,0 +1,32 @@
+function populateByName(source, target) {
+	let posts = [];
+	for (let post of source.children) {
+		let title = post.firstElementChild.innerText;
+		posts.push([title, post.cloneNode(true)]);
+	}
+	posts.sort(([a, _1], [b, _2]) => a.toLocaleLowerCase().localeCompare(b.toLocaleLowerCase()));
+	for (let [_, post] of posts) {
+		target.appendChild(post);
+	}
+}
+
+function sort(by, dateEl, nameEl) {
+	console.log("sorting by", by);
+	switch (by) {
+		case "date":
+			dateEl.style.display = "block";
+			nameEl.style.display = "none";
+			break;
+		case "name":
+			nameEl.style.display = "block";
+			dateEl.style.display = "none";
+			break;
+	}
+}
+
+function handleSort(form, dateEl, nameEl) {
+	for (let el of form.sort)
+		el.addEventListener("change", () => {
+			if (el.checked) sort(el.value, dateEl, nameEl);
+		});
+}

static/style.css

@@ -1,4 +1,5 @@
-/* colors */
+/* colors from catppuccin https://github.com/catppuccin/catppuccin
+   licensed under the MIT license, available in the source tree    */
 :root {
 	--base: #1e1e2e;
 	--text: #cdd6f4;
@@ -84,6 +85,39 @@ div.post {
 	margin-bottom: 1em;
 }
 
+.table {
+	display: grid;
+	/*grid-template-columns: auto auto auto;
+	grid-template-rows: auto auto;*/
+	width: max-content;
+}
+
+.table > :not(.value)::after {
+	content: ":";
+}
+
+.table > .value {
+	margin-left: 1em;
+	grid-column: 2;
+}
+
+.table > .created {
+	grid-row: 1;
+}
+
+.table > .modified {
+	grid-row: 2;
+}
+
+.table > .tags {
+	grid-row: 3;
+}
+
+#sort {
+	display: inline-block;
+	margin-bottom: 1rem;
+}
+
 /* BEGIN cool effect everyone liked */
 
 body {

templates/index.hbs

@@ -0,0 +1,63 @@
+<html lang="en">
+	<head>
+		<meta charset="UTF-8" />
+		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
+		<meta name="description" content="{{title}}" />
+		<meta property="og:title" content="{{title}}" />
+		<meta property="og:description" content="{{description}}" />
+		<meta name="keywords" content="{{joined_tags}}" />
+		{{#if (ne color null)}}
+			<meta name="theme-color" content="{{style.color}}" />
+		{{/if}}
+		<title>{{title}}</title>
+		<link rel="stylesheet" href="/static/style.css" />
+		{{#if rss}}
+			<link rel="alternate" type="application/rss+xml" title="{{title}}" href="/feed.xml" />
+		{{/if}}
+		{{#if js}}
+			<script src="/static/date.js" defer></script>
+			<script src="/static/sort.js" defer></script>
+			<script src="/static/main.js" defer></script>
+		{{/if}}
+	</head>
+	<body>
+		<main>
+			<h1>{{title}}</h1>
+			<p>{{description}}</p>
+			<h2>posts</h2>
+			<div>
+				{{#if js}}
+					<form id="sort" style="display: none">
+						sort by: {{sort}}
+						<br />
+						<input type="radio" name="sort" id="sort-date" value="date" {{#if (eq style.default_sort "date")}}checked{{/if}} />
+						<label for="sort-date">date</label>
+						<input type="radio" name="sort" id="sort-name" value="name" {{#if (eq style.default_sort "name")}}checked{{/if}} />
+						<label for="sort-name">name</label>
+					</form>
+				{{/if}}
+				{{#each posts}}
+					<div id="posts">
+						<div class="post">
+							<a href="/posts/{{name}}"><b>{{title}}</b></a>
+							<span class="post-author">- by {{author}}</span>
+							<br />
+							{{description}}<br />
+							{{>post_table post style=@root.style}}
+						</div>
+					</div>
+				{{else}} there are no posts right now. check back later! {{/each}}
+			</div>
+
+			{{#if (gt (len tags) 0)}}
+				<h2>tags</h2>
+				<b><a href="/">clear tags</a></b>
+				<br />
+			{{/if}}
+			{{#each tags}}
+				<a href="/?tag={{@key}}" title="view all posts with this tag">{{@key}}</a>
+				<span class="post-author">- {{this}} post{{#if (ne this 1)}}s{{/if}}</span><br />
+			{{/each}}
+		</main>
+	</body>
+</html>

templates/index.html

@@ -1,43 +0,0 @@
-{%- import "macros.askama" as macros -%}
-<!DOCTYPE html>
-<html lang="en">
-	<head>
-		<meta charset="UTF-8" />
-		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
-		<meta name="description" content="{{ title }}" />
-		<meta property="og:title" content="{{ title }}" />
-		<meta property="og:description" content="{{ description }}" />
-		<title>{{ title }}</title>
-		<link rel="stylesheet" href="/static/style.css" />
-	</head>
-	<body>
-		<main>
-			<h1>{{ title }}</h1>
-			<p>{{ description }}</p>
-			<h2>posts</h2>
-			<!-- prettier-ignore -->
-			<div>
-				{% if posts.is_empty() %}
-				there are no posts right now. check back later!
-				{% endif %}<!-- prettier-br -->
-				{% for post in posts %}
-				<div class="post">
-					<a href="/posts/{{ post.name }}"><b>{{ post.title }}</b></a>
-					<span class="post-author">- by {{ post.author }}</span>
-					<br />
-					{{ post.description }}<br />
-					{% call macros::table(post) %}
-				</div>
-				{% endfor %}
-			</div>
-			{% let tags = posts|collect_tags %}<!-- prettier-br -->
-			{% if !tags.is_empty() %}
-			<h2>tags</h2>
-			{% endif %}<!-- prettier-br -->
-			{% for tag in tags %}
-			<a href="/?tag={{ tag.0 }}" title="view all posts with this tag">{{ tag.0 }}</a>
-			<span class="post-author">- {{ tag.1 }} post{% if tag.1 != 1 %}s{%endif %}</span><br />
-			{% endfor %}
-		</main>
-	</body>
-</html>

templates/macros.askama

@@ -1,19 +0,0 @@
-{% macro table(post) %}
-    {% match post.created_at %}
-        {% when Some(created_at) %}
-            written:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {{ created_at|date }}<br />
-        {% when None %}
-    {% endmatch %}
-    {% match post.modified_at %}
-        {% when Some(modified_at) %}
-            last modified: {{ modified_at|date }}<br />
-        {% when None %}
-    {% endmatch %}
-
-    {% if !post.tags.is_empty() %}
-        tags:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
-        {% for tag in post.tags %}
-            <a href="/?tag={{ tag }}" title="view all posts with this tag">{{ tag }}</a>
-        {% endfor %}<br />
-    {% endif %}
-{% endmacro %}

templates/post.hbs

@@ -0,0 +1,71 @@
+<html lang="en">
+	<head>
+		<meta charset="UTF-8" />
+		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
+		<meta name="author" content="{{meta.author}}" />
+		<meta name="keywords" content="{{joined_tags}}" />
+		<meta name="description" content="{{meta.title}}" />
+		<!-- you know what I really love? platforms like discord
+			favoring twitter embeds over the open standard. to color
+			your embed or have large images, you have to do _this_. lmao -->
+		<meta property="og:title" content="{{meta.title}}" />
+		<meta property="twitter:title" content="{{meta.title}}" />
+		<meta property="og:description" content="{{meta.description}}" />
+		<meta property="twitter:description" content="{{meta.description}}" />
+		{{#if (ne meta.icon null)}}
+			<meta property="og:image" content="{{meta.icon}}" />
+			<meta name="twitter:card" content="summary_large_image" />
+			<meta property="twitter:image:src" content="{{meta.icon}}" />
+			{{#if (ne meta.icon_alt null)}}
+				<meta property="og:image:alt" content="{{meta.icon_alt}}" />
+				<meta property="twitter:image:alt" content="{{meta.icon_alt}}" />
+			{{/if}}{{/if}}
+		{{#if (ne color null)}}
+			<meta name="theme-color" content="{{color}}" />
+		{{/if}}
+		<title>{{meta.title}}</title>
+		<link rel="stylesheet" href="/static/style.css" />
+		<link rel="stylesheet" href="/static/post.css" />
+		<link rel="stylesheet" href="/static/custom/style.css" />
+		<link rel="stylesheet" href="/static/custom/post.css" />
+		{{#if js}}
+			<script src="/static/date.js" defer></script>
+			<script src="/static/main.js" defer></script>
+		{{/if}}
+	</head>
+	<body>
+		<main>
+			<h1 class="post-title">
+				{{meta.title}}
+				<span class="post-author">- by {{meta.author}}</span>
+			</h1>
+			<p class="post-desc">{{meta.description}}</p>
+			<div class="post">
+				{{>post_table meta style=@root.style}}
+				<a href="/posts/{{meta.name}}">link</a><br />
+				<a href="/">back to home</a>
+			</div>
+			<hr />
+			{{{rendered}}}
+		</main>
+		<footer>
+			{{#each rendered_in}}
+				{{#if (eq @key "ParsedAndRendered")}}
+					<span class="tooltipped" title="parsing took {{duration this.[1]}}">parsed</span>
+					and
+					<span class="tooltipped" title="rendering took {{duration this.[2]}}">rendered</span>
+					in
+					{{duration this.[0]}}
+
+				{{else if (eq @key "Cached")}}
+					retrieved from cache in
+					{{duration this}}
+				{{/if}}
+			{{/each}}
+			{{#if markdown_access}}
+				-
+				<a href="/posts/{{meta.name}}.md">view raw</a>
+			{{/if}}
+		</footer>
+	</body>
+</html>

templates/post.html

@@ -1,52 +0,0 @@
-{%- import "macros.askama" as macros -%}
-<!DOCTYPE html>
-<html lang="en">
-	<head>
-		<head>
-			<meta charset="UTF-8" />
-			<meta name="viewport" content="width=device-width, initial-scale=1.0" />
-			<meta name="description" content="{{ meta.title }}" />
-			<meta property="og:title" content="{{ meta.title }}" />
-			<meta property="og:description" content="{{ meta.description }}" />
-			{% match meta.icon %} {% when Some with (url) %}
-			<meta property="og:image" content="{{ url }}" />
-			<link rel="shortcut icon" href="{{ url }}" />
-			{% when None %} {% endmatch %}
-			<title>{{ meta.title }}</title>
-			<link rel="stylesheet" href="/static/style.css" />
-			<link rel="stylesheet" href="/static/post.css" />
-		</head>
-	</head>
-	<body>
-		<main>
-			<h1 class="post-title">
-				{{ meta.title }}
-				<span class="post-author">- by {{ meta.author }}</span>
-			</h1>
-			<p class="post-desc">{{ meta.description }}</p>
-			<div class="" post>
-				<!-- prettier-ignore -->
-				<div>
-				{% call macros::table(meta) %}
-				</div>
-				<a href="/posts/{{ meta.name }}">link</a><br />
-				<a href="/">back to home</a>
-			</div>
-			<hr />
-			{{ rendered|escape("none") }}
-		</main>
-		<!-- prettier-ignore -->
-		<footer>
-		{% match rendered_in %}
-		{% when RenderStats::ParsedAndRendered(total, parsing, rendering) %}
-			<span class="tooltipped" title="parsing took {{ parsing|duration }}">parsed</span> and
-			<span class="tooltipped" title="rendering took {{ rendering|duration }}">rendered</span> in {{ total|duration }}
-		{% when RenderStats::Cached(total) %}
-			retrieved from cache in {{ total|duration }}
-		{% endmatch %}
-		{% if markdown_access %}
-			- <a href="/posts/{{ meta.name }}.md">view raw</a>
-		{% endif %}
-		</footer>
-	</body>
-</html>