add custom date formatting and client side date formatting

README.md

@@ -22,7 +22,7 @@ blazingly fast markdown blog software written in rust memory safe
 - [ ] ^ 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
 - [ ] make date parsing less strict
-- [ ] make date formatting better
+- [x] make date formatting better
 - [ ] date formatting respects user timezone
 - [x] clean up imports and require less features
 - [ ] improve home page
@@ -36,9 +36,16 @@ blazingly fast markdown blog software written in rust memory safe
 the default configuration with comments looks like this
 
 ```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
+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
+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
+js_enable = true       # enable javascript (required for above)
 
 [rss]
 enable = false         # serve an rss field under /feed.xml

src/app.rs

@@ -3,21 +3,21 @@ use std::time::Duration;
 
 use askama_axum::Template;
 use axum::extract::{Path, Query, State};
+use axum::http::header::CONTENT_TYPE;
 use axum::http::{header, Request};
 use axum::response::{IntoResponse, Redirect, Response};
 use axum::routing::get;
 use axum::{Json, Router};
 use rss::{Category, ChannelBuilder, ItemBuilder};
 use serde::Deserialize;
-use tokio::io::AsyncReadExt;
 use tower_http::services::ServeDir;
 use tower_http::trace::TraceLayer;
 use tracing::{info, info_span, Span};
 
-use crate::config::Config;
+use crate::config::{Config, DateFormat};
 use crate::error::{AppError, AppResult};
 use crate::filters;
-use crate::post::{MarkdownPosts, PostManager, PostMetadata, RenderStats};
+use crate::post::{MarkdownPosts, PostManager, PostMetadata, RenderStats, ReturnedPost};
 
 #[derive(Clone)]
 pub struct AppState {
@@ -31,6 +31,8 @@ struct IndexTemplate {
     title: String,
     description: String,
     posts: Vec<PostMetadata>,
+    df: DateFormat,
+    js: bool,
 }
 
 #[derive(Template)]
@@ -40,6 +42,8 @@ struct PostTemplate {
     rendered: String,
     rendered_in: RenderStats,
     markdown_access: bool,
+    df: DateFormat,
+    js: bool,
 }
 
 #[derive(Deserialize)]
@@ -61,6 +65,8 @@ async fn index(
         title: config.title.clone(),
         description: config.description.clone(),
         posts,
+        df: config.date_format.clone(),
+        js: config.js_enable,
     })
 }
 
@@ -138,27 +144,23 @@ async fn post(
     State(AppState { config, posts }): State<AppState>,
     Path(name): Path<String>,
 ) -> AppResult<Response> {
-    if name.ends_with(".md") && config.raw_access {
-        let mut file = tokio::fs::OpenOptions::new()
-            .read(true)
-            .open(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 = posts.get_post(&name).await?;
+    match posts.get_post(&name).await? {
+        ReturnedPost::Rendered(meta, rendered, rendered_in) => {
             let page = PostTemplate {
-            meta: post.0,
-            rendered: post.1,
-            rendered_in: post.2,
-            markdown_access: config.raw_access,
+                meta,
+                rendered,
+                rendered_in,
+                markdown_access: config.markdown_access,
+                df: config.date_format.clone(),
+                js: config.js_enable,
             };
 
             Ok(page.into_response())
         }
+        ReturnedPost::Raw(body, content_type) => {
+            Ok(([(CONTENT_TYPE, content_type)], body).into_response())
+        }
+    }
 }
 
 pub fn new(config: &Config) -> Router<AppState> {

src/config.rs

@@ -1,5 +1,5 @@
 use std::env;
-use std::net::{IpAddr, Ipv4Addr};
+use std::net::{IpAddr, Ipv6Addr};
 use std::path::PathBuf;
 
 use color_eyre::eyre::{bail, Context, Result};
@@ -59,13 +59,22 @@ 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)]
 #[serde(default)]
 pub struct Config {
     pub title: String,
     pub description: String,
-    pub raw_access: bool,
-    pub num_posts: usize,
+    pub markdown_access: bool,
+    pub date_format: DateFormat,
+    pub js_enable: bool,
     pub rss: RssConfig,
     pub dirs: DirsConfig,
     pub http: HttpConfig,
@@ -78,8 +87,9 @@ 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,
+            date_format: Default::default(),
+            js_enable: true,
             // 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
@@ -111,7 +121,7 @@ impl Default for DirsConfig {
 impl Default for HttpConfig {
     fn default() -> Self {
         Self {
-            host: IpAddr::V4(Ipv4Addr::UNSPECIFIED),
+            host: IpAddr::V6(Ipv6Addr::UNSPECIFIED),
             port: 3000,
         }
     }

src/filters.rs

@@ -1,11 +1,29 @@
-use std::{collections::HashMap, time::Duration};
+use std::collections::HashMap;
+use std::fmt::Display;
+use std::time::Duration;
 
 use chrono::{DateTime, TimeZone};
 
+use crate::config::DateFormat;
 use crate::post::PostMetadata;
 
-pub fn date<T: TimeZone>(date: &DateTime<T>) -> Result<String, askama::Error> {
-    Ok(date.to_rfc3339_opts(chrono::SecondsFormat::Secs, true))
+fn format_date<T>(date: &DateTime<T>, date_format: &DateFormat) -> String
+where
+    T: TimeZone,
+    T::Offset: Display,
+{
+    match date_format {
+        DateFormat::RFC3339 => date.to_rfc3339_opts(chrono::SecondsFormat::Secs, true),
+        DateFormat::Strftime(ref format_string) => date.format(format_string).to_string(),
+    }
+}
+
+pub fn date<T>(date: &DateTime<T>, date_format: &DateFormat) -> Result<String, askama::Error>
+where
+    T: TimeZone,
+    T::Offset: Display,
+{
+    Ok(format_date(date, date_format))
 }
 
 pub fn duration(duration: &&Duration) -> Result<String, askama::Error> {

src/post/cache.rs

@@ -1,15 +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::{Config, RenderConfig};
-use crate::post::PostMetadata;
-
 /// do not persist cache if this version number changed
 pub const CACHE_VERSION: u16 = 2;
 

src/post/markdown_posts.rs

@@ -1,11 +1,16 @@
+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};
@@ -13,9 +18,40 @@ 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::{FrontMatter, PostError, PostManager, PostMetadata, RenderStats};
+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 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(),
+        }
+    }
+}
 pub struct MarkdownPosts<C>
 where
     C: Deref<Target = Config>,
@@ -219,8 +255,10 @@ where
                     .to_string();
 
                 let post = self.get_post(&name).await?;
-                if filter(&post.0, &post.1) {
-                    posts.push(post);
+                if let ReturnedPost::Rendered(meta, content, stats) = post
+                    && filter(&meta, &content)
+                {
+                    posts.push((meta, content, stats));
                 }
             }
         }
@@ -228,7 +266,32 @@ where
         Ok(posts)
     }
 
-    async fn get_post(&self, name: &str) -> Result<(PostMetadata, String, RenderStats), PostError> {
+    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");
 
@@ -249,20 +312,22 @@ where
             if let Some(cache) = self.cache.as_ref()
                 && let Some(hit) = cache.lookup(name, mtime, &self.config.render).await
             {
-            Ok((
+                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((
+                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() {

src/post/mod.rs

@@ -1,47 +1,15 @@
 pub mod cache;
 pub mod markdown_posts;
 
-use std::collections::BTreeSet;
-use std::time::{Duration, SystemTime};
+use std::time::Duration;
 
+use axum::http::HeaderValue;
 use chrono::{DateTime, Utc};
 use serde::{Deserialize, Serialize};
 
 use crate::error::PostError;
 pub use crate::post::markdown_posts::MarkdownPosts;
 
-#[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(),
-        }
-    }
-}
-
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub struct PostMetadata {
     pub name: String,
@@ -54,13 +22,18 @@ pub struct PostMetadata {
     pub tags: Vec<String>,
 }
 
-#[allow(unused)]
 pub enum RenderStats {
     Cached(Duration),
     // format: Total, Parsed in, Rendered in
     ParsedAndRendered(Duration, Duration, Duration),
 }
 
+#[allow(clippy::large_enum_variant)] // Raw will be returned very rarely
+pub enum ReturnedPost {
+    Rendered(PostMetadata, String, RenderStats),
+    Raw(Vec<u8>, HeaderValue),
+}
+
 pub trait PostManager {
     async fn get_all_post_metadata(
         &self,
@@ -97,10 +70,13 @@ pub trait PostManager {
 
     #[allow(unused)]
     async fn get_post_metadata(&self, name: &str) -> Result<PostMetadata, PostError> {
-        self.get_post(name).await.map(|(meta, ..)| meta)
+        match self.get_post(name).await? {
+            ReturnedPost::Rendered(metadata, ..) => Ok(metadata),
+            ReturnedPost::Raw(..) => Err(PostError::NotFound(name.to_string())),
+        }
     }
 
-    async fn get_post(&self, name: &str) -> Result<(PostMetadata, String, RenderStats), PostError>;
+    async fn get_post(&self, name: &str) -> Result<ReturnedPost, PostError>;
 
     async fn cleanup(&self);
 }

static/main.js

@@ -0,0 +1,4 @@
+for (let el of document.querySelectorAll(".date-rfc3339")) {
+	let date = new Date(Date.parse(el.textContent));
+	el.textContent = date.toLocaleString();
+}

static/style.css

@@ -84,6 +84,35 @@ 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;
+	text-align: end;
+	grid-column: 2;
+}
+
+.table > .created {
+	grid-row: 1;
+}
+
+.table > .modified {
+	grid-row: 2;
+}
+
+.table > .tags {
+	grid-row: 3;
+}
+
 /* BEGIN cool effect everyone liked */
 
 body {

templates/index.html

@@ -9,6 +9,9 @@
 		<meta property="og:description" content="{{ description }}" />
 		<title>{{ title }}</title>
 		<link rel="stylesheet" href="/static/style.css" />
+		{% if js %}
+		<script src="/static/main.js" defer></script>
+		{% endif %}
 	</head>
 	<body>
 		<main>

templates/macros.askama

@@ -1,19 +1,31 @@
+{% macro span_date(value) %}
+<span class="{%- match df -%}
+    {% when DateFormat::RFC3339 %}
+        date-rfc3339
+    {% when DateFormat::Strftime(_) %}
+{%- endmatch -%}">{{ value|date(df) }}</span>
+{% endmacro %}
 {% macro table(post) %}
+<div class="table">
     {% match post.created_at %}
         {% when Some(created_at) %}
-            written:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {{ created_at|date }}<br />
+            <div class="created">written</div>
+            <div class="created value">{% call span_date(created_at) %}</div>
         {% when None %}
     {% endmatch %}
     {% match post.modified_at %}
         {% when Some(modified_at) %}
-            last modified: {{ modified_at|date }}<br />
+            <div class="modified">last modified</div>
+            <div class="modified value">{% call span_date(modified_at) %}</div>
         {% when None %}
     {% endmatch %}
-
     {% if !post.tags.is_empty() %}
-        tags:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+        <div class="tags">tags</div>
+        <div class="tags value">
         {% for tag in post.tags %}
             <a href="/?tag={{ tag }}" title="view all posts with this tag">{{ tag }}</a>
-        {% endfor %}<br />
+        {% endfor %}
+        </div>
     {% endif %}
+</div>
 {% endmacro %}

templates/post.html

@@ -1,7 +1,6 @@
 {%- 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" />
@@ -15,7 +14,9 @@
 		<title>{{ meta.title }}</title>
 		<link rel="stylesheet" href="/static/style.css" />
 		<link rel="stylesheet" href="/static/post.css" />
-		</head>
+		{% if js %}
+		<script src="/static/main.js" defer></script>
+		{% endif %}
 	</head>
 	<body>
 		<main>
@@ -24,11 +25,9 @@
 				<span class="post-author">- by {{ meta.author }}</span>
 			</h1>
 			<p class="post-desc">{{ meta.description }}</p>
-			<div class="" post>
+			<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>