1use std::sync::Arc;
 2
 3use askama::Template;
 4use axum::{extract::Query, response::IntoResponse, Extension};
 5use serde::Deserialize;
 6
 7use crate::{
 8    git::{Commit, OpenRepository},
 9    into_response,
10    methods::{
11        filters,
12        repo::{Repository, RepositoryPath, Result},
13    },
14    Git,
15};
16
17#[derive(Template)]
18#[template(path = "repo/commit.html")]
19pub struct View {
20    pub repo: Repository,
21    pub commit: Arc<Commit>,
22    pub branch: Option<Arc<str>>,
23    pub dl_branch: Arc<str>,
24    pub id: Option<String>,
25}
26
27#[derive(Deserialize)]
28pub struct UriQuery {
29    pub id: Option<String>,
30    #[serde(rename = "h")]
31    pub branch: Option<Arc<str>>,
32}
33
34pub async fn handle(
35    Extension(repo): Extension<Repository>,
36    Extension(RepositoryPath(repository_path)): Extension<RepositoryPath>,
37    Extension(git): Extension<Arc<Git>>,
38    Query(query): Query<UriQuery>,
39) -> Result<impl IntoResponse> {
40    let open_repo = git.repo(repository_path, query.branch.clone()).await?;
41
42    let (dl_branch, commit) = tokio::try_join!(
43        fetch_dl_branch(query.branch.clone(), open_repo.clone()),
44        fetch_commit(query.id.as_deref(), open_repo),
45    )?;
46
47    Ok(into_response(View {
48        repo,
49        commit,
50        branch: query.branch,
51        id: query.id,
52        dl_branch,
53    }))
54}
55
56async fn fetch_commit(
57    commit_id: Option<&str>,
58    open_repo: Arc<OpenRepository>,
59) -> Result<Arc<Commit>> {
60    Ok(if let Some(commit) = commit_id {
61        open_repo.commit(commit, true).await?
62    } else {
63        Arc::new(open_repo.latest_commit(true).await?)
64    })
65}
66
67async fn fetch_dl_branch(
68    branch: Option<Arc<str>>,
69    open_repo: Arc<OpenRepository>,
70) -> Result<Arc<str>> {
71    if let Some(branch) = branch.clone() {
72        Ok(branch)
73    } else {
74        Ok(Arc::from(
75            open_repo
76                .clone()
77                .default_branch()
78                .await?
79                .unwrap_or_else(|| "master".to_string()),
80        ))
81    }
82}