Add /commit/:hash page

src/web/commit_hash.rs

@@ -0,0 +1,90 @@
+use std::sync::Arc;
+
+use askama::Template;
+use axum::{
+    extract::{Path, State},
+    response::IntoResponse,
+};
+use futures::TryStreamExt;
+use gix::{prelude::ObjectIdExt, Id, ObjectId, ThreadSafeRepository};
+use sqlx::SqlitePool;
+
+use crate::{config::Config, repo, somehow};
+
+struct Commit {
+    hash: String,
+    description: String,
+}
+
+impl Commit {
+    fn new(id: Id<'_>) -> somehow::Result<Self> {
+        let commit = id.object()?.try_into_commit()?;
+        Ok(Self {
+            hash: id.to_string(),
+            description: repo::format_commit_short(&commit)?,
+        })
+    }
+}
+
+#[derive(Template)]
+#[template(path = "commit_hash.html")]
+struct CommitIdTemplate {
+    base: String,
+    repo_name: String,
+    current: String,
+    hash: String,
+    summary: String,
+    message: String,
+    author: String,
+    author_date: String,
+    commit: String,
+    commit_date: String,
+    parents: Vec<Commit>,
+    children: Vec<Commit>,
+}
+
+pub async fn get(
+    Path(hash): Path<String>,
+    State(config): State<&'static Config>,
+    State(db): State<SqlitePool>,
+    State(repo): State<Arc<ThreadSafeRepository>>,
+) -> somehow::Result<impl IntoResponse> {
+    // Do this first because a &Repository can't be kept across awaits.
+    let child_ids = sqlx::query!("SELECT child FROM commit_links WHERE parent = ?", hash)
+        .fetch(&db)
+        .map_ok(|r| r.child)
+        .try_collect::<Vec<_>>()
+        .await?;
+
+    let repo = repo.to_thread_local();
+    let id = hash.parse::<ObjectId>()?.attach(&repo);
+    let commit = id.object()?.try_into_commit()?;
+    let author_info = commit.author()?;
+    let committer_info = commit.committer()?;
+
+    let mut parents = vec![];
+    for id in commit.parent_ids() {
+        parents.push(Commit::new(id)?);
+    }
+
+    let mut children = vec![];
+    for hash in child_ids {
+        let id = hash.parse::<ObjectId>()?.attach(&repo);
+        children.push(Commit::new(id)?);
+    }
+
+    Ok(CommitIdTemplate {
+        base: config.web.base(),
+        repo_name: config.repo.name(),
+        current: "commit".to_string(),
+        hash: id.to_string(),
+        summary: commit.message()?.summary().to_string(),
+        message: commit.message_raw_sloppy().to_string(),
+        author: repo::format_actor(author_info.actor())?,
+        author_date: author_info.time.to_bstring().to_string(),
+        commit: repo::format_actor(committer_info.actor())?,
+        commit_date: committer_info.time.to_bstring().to_string(),
+        parents,
+        children,
+    })
+}