From 3b4d8dab728765db18181d08d03f1796b2d0db3f Mon Sep 17 00:00:00 2001
From: Joscha <joscha@plugh.de>
Date: Sat, 5 Aug 2023 21:03:18 +0200
Subject: [PATCH] List tracked refs on index page

---
 src/main.rs          |  1 +
 src/repo.rs          | 14 ++++++++++++++
 src/web/index.rs     | 34 ++++++++++++++++++++++++++++++++--
 static/base.css      | 30 +++++++++++++++++++++++++-----
 templates/index.html | 18 +++++++++++++++++-
 5 files changed, 89 insertions(+), 8 deletions(-)
 create mode 100644 src/repo.rs

diff --git a/src/main.rs b/src/main.rs
index 1c59f24..09c3ce0 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,6 @@
 mod config;
 mod recurring;
+mod repo;
 mod somehow;
 mod state;
 mod web;
diff --git a/src/repo.rs b/src/repo.rs
new file mode 100644
index 0000000..6ddba76
--- /dev/null
+++ b/src/repo.rs
@@ -0,0 +1,14 @@
+//! Utility functions for accessing a [`Repository`].
+
+use gix::{ObjectId, Repository};
+
+use crate::somehow;
+
+pub fn short_commit(repo: &Repository, hash: &str) -> somehow::Result<String> {
+    let hash = hash.parse::<ObjectId>()?;
+    let commit = repo.find_object(hash)?.try_into_commit()?;
+
+    let id = commit.short_id()?;
+    let summary = commit.message()?.summary();
+    Ok(format!("{id} ({summary})"))
+}
diff --git a/src/web/index.rs b/src/web/index.rs
index 610a94e..4d8afba 100644
--- a/src/web/index.rs
+++ b/src/web/index.rs
@@ -1,18 +1,48 @@
+use std::sync::Arc;
+
 use askama::Template;
 use axum::{extract::State, response::IntoResponse};
+use gix::ThreadSafeRepository;
+use sqlx::SqlitePool;
 
-use crate::config::Config;
+use crate::{config::Config, repo, somehow};
+
+struct Ref {
+    name: String,
+    hash: String,
+    short: String,
+}
 
 #[derive(Template)]
 #[template(path = "index.html")]
 struct IndexTemplate {
     base: String,
     repo_name: String,
+    refs: Vec<Ref>,
 }
 
-pub async fn get(State(config): State<&'static Config>) -> super::Result<impl IntoResponse> {
+pub async fn get(
+    State(config): State<&'static Config>,
+    State(db): State<SqlitePool>,
+    State(repo): State<Arc<ThreadSafeRepository>>,
+) -> somehow::Result<impl IntoResponse> {
+    let repo = repo.to_thread_local();
+
+    let rows = sqlx::query!("SELECT name, hash FROM tracked_refs")
+        .fetch_all(&db)
+        .await?;
+
+    let mut refs = vec![];
+    for row in rows {
+        let name = row.name;
+        let hash = row.hash;
+        let short = repo::short_commit(&repo, &hash)?;
+        refs.push(Ref { name, hash, short });
+    }
+
     Ok(IndexTemplate {
         base: config.web.base(),
         repo_name: config.repo.name(),
+        refs,
     })
 }
diff --git a/static/base.css b/static/base.css
index 71b9934..097c5e9 100644
--- a/static/base.css
+++ b/static/base.css
@@ -3,9 +3,12 @@
     color-scheme: light dark;
 }
 
+/* Nav bar */
+
 nav {
     font-size: 1.5em;
     line-height: 1.2em;
+    margin-bottom: 1.5em;
     padding: 0.3em;
     background-color: #bdf;
     border-radius: 0.3em;
@@ -33,11 +36,6 @@ nav> :last-child {
 
 nav a {
     color: black;
-    text-decoration: none;
-}
-
-nav a:hover {
-    text-decoration: underline;
 }
 
 nav img {
@@ -45,3 +43,25 @@ nav img {
     height: 1.2em;
     vertical-align: -20%;
 }
+
+/* General */
+
+a {
+    text-decoration: none;
+}
+
+a:hover {
+    text-decoration: underline;
+}
+
+table {
+    border-collapse: collapse;
+}
+
+td {
+    padding: 0 1ch;
+}
+
+tbody tr:nth-child(odd) {
+    background-color: #ddd;
+}
diff --git a/templates/index.html b/templates/index.html
index 1cfabbf..b86203c 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -1,5 +1,21 @@
 {% extends "base.html" %}
 
 {% block body %}
-<h1>{{ repo_name }}</h1>
+<h2>Tracked refs</h2>
+<table>
+    <thead>
+        <tr>
+            <th>ref</th>
+            <th>points to</th>
+        </tr>
+    </thead>
+    <tbody>
+        {% for ref in refs %}
+        <tr>
+            <td>{{ ref.name }}</td>
+            <td><a href="{{ base }}/commit/{{ ref.hash }}">{{ ref.short }}</a></td>
+        </tr>
+        {% endfor %}
+    </tbody>
+</table>
 {% endblock %}