1use std::str::FromStr;
2use std::sync::{Arc, LazyLock};
3
4use anyhow::{Context as _, Result, bail};
5use async_trait::async_trait;
6use futures::AsyncReadExt;
7use git::{
8 BuildCommitPermalinkParams, BuildPermalinkParams, GitHostingProvider, ParsedGitRemote,
9 PullRequest, RemoteUrl,
10};
11use gpui::SharedString;
12use http_client::{AsyncBody, HttpClient, HttpRequestExt, Request};
13use regex::Regex;
14use serde::Deserialize;
15use url::Url;
16
17const CHROMIUM_REVIEW_URL: &str = "https://chromium-review.googlesource.com";
18
19/// Parses Gerrit URLs like
20/// https://chromium-review.googlesource.com/c/chromium/src/+/3310961.
21fn pull_request_regex() -> &'static Regex {
22 static PULL_REQUEST_NUMBER_REGEX: LazyLock<Regex> = LazyLock::new(|| {
23 Regex::new(&format!(
24 r#"Reviewed-on: ({CHROMIUM_REVIEW_URL}/c/(.*)/\+/(\d+))"#
25 ))
26 .unwrap()
27 });
28 &PULL_REQUEST_NUMBER_REGEX
29}
30
31/// https://gerrit-review.googlesource.com/Documentation/rest-api-changes.html
32#[derive(Debug, Deserialize)]
33struct ChangeInfo {
34 owner: AccountInfo,
35}
36
37#[derive(Debug, Deserialize)]
38pub struct AccountInfo {
39 #[serde(rename = "_account_id")]
40 id: u64,
41}
42
43pub struct Chromium;
44
45impl Chromium {
46 async fn fetch_chromium_commit_author(
47 &self,
48 _repo: &str,
49 commit: &str,
50 client: &Arc<dyn HttpClient>,
51 ) -> Result<Option<AccountInfo>> {
52 let url = format!("{CHROMIUM_REVIEW_URL}/changes/{commit}");
53
54 let request = Request::get(&url)
55 .header("Content-Type", "application/json")
56 .follow_redirects(http_client::RedirectPolicy::FollowAll);
57
58 let mut response = client
59 .send(request.body(AsyncBody::default())?)
60 .await
61 .with_context(|| format!("error fetching Gerrit commit details at {:?}", url))?;
62
63 let mut body = Vec::new();
64 response.body_mut().read_to_end(&mut body).await?;
65
66 if response.status().is_client_error() {
67 let text = String::from_utf8_lossy(body.as_slice());
68 bail!(
69 "status error {}, response: {text:?}",
70 response.status().as_u16()
71 );
72 }
73
74 // Remove XSSI protection prefix.
75 let body_str = std::str::from_utf8(&body)?.trim_start_matches(")]}'");
76
77 serde_json::from_str::<ChangeInfo>(body_str)
78 .map(|change| Some(change.owner))
79 .context("failed to deserialize Gerrit change info")
80 }
81}
82
83#[async_trait]
84impl GitHostingProvider for Chromium {
85 fn name(&self) -> String {
86 "Chromium".to_string()
87 }
88
89 fn base_url(&self) -> Url {
90 Url::parse("https://chromium.googlesource.com").unwrap()
91 }
92
93 fn supports_avatars(&self) -> bool {
94 true
95 }
96
97 fn format_line_number(&self, line: u32) -> String {
98 format!("{line}")
99 }
100
101 fn format_line_numbers(&self, start_line: u32, _end_line: u32) -> String {
102 format!("{start_line}")
103 }
104
105 fn parse_remote_url(&self, url: &str) -> Option<ParsedGitRemote> {
106 let url = RemoteUrl::from_str(url).ok()?;
107
108 let host = url.host_str()?;
109 if host != self.base_url().host_str()? {
110 return None;
111 }
112
113 let path_segments = url.path_segments()?.collect::<Vec<_>>();
114 let joined_path = path_segments.join("/");
115 let repo = joined_path.trim_end_matches(".git");
116
117 Some(ParsedGitRemote {
118 owner: Arc::from(""),
119 repo: repo.into(),
120 })
121 }
122
123 fn build_commit_permalink(
124 &self,
125 remote: &ParsedGitRemote,
126 params: BuildCommitPermalinkParams,
127 ) -> Url {
128 let BuildCommitPermalinkParams { sha } = params;
129 let ParsedGitRemote { owner: _, repo } = remote;
130
131 self.base_url().join(&format!("{repo}/+/{sha}")).unwrap()
132 }
133
134 fn build_permalink(&self, remote: ParsedGitRemote, params: BuildPermalinkParams) -> Url {
135 let ParsedGitRemote { owner: _, repo } = remote;
136 let BuildPermalinkParams {
137 sha,
138 path,
139 selection,
140 } = params;
141
142 let mut permalink = self
143 .base_url()
144 .join(&format!("{repo}/+/{sha}/{path}"))
145 .unwrap();
146 permalink.set_fragment(
147 selection
148 .map(|selection| self.line_fragment(&selection))
149 .as_deref(),
150 );
151 permalink
152 }
153
154 fn extract_pull_request(&self, remote: &ParsedGitRemote, message: &str) -> Option<PullRequest> {
155 let capture = pull_request_regex().captures(message)?;
156 let url = Url::parse(capture.get(1)?.as_str()).unwrap();
157 let repo = capture.get(2)?.as_str();
158 if repo != remote.repo.as_ref() {
159 return None;
160 }
161
162 let number = capture.get(3)?.as_str().parse::<u32>().ok()?;
163
164 Some(PullRequest { number, url })
165 }
166
167 async fn commit_author_avatar_url(
168 &self,
169 _repo_owner: &str,
170 repo: &str,
171 commit: SharedString,
172 http_client: Arc<dyn HttpClient>,
173 ) -> Result<Option<Url>> {
174 let commit = commit.to_string();
175 let Some(author) = self
176 .fetch_chromium_commit_author(repo, &commit, &http_client)
177 .await?
178 else {
179 return Ok(None);
180 };
181
182 let mut avatar_url = Url::parse(&format!(
183 "{CHROMIUM_REVIEW_URL}/accounts/{}/avatar",
184 &author.id
185 ))?;
186 avatar_url.set_query(Some("size=128"));
187
188 Ok(Some(avatar_url))
189 }
190}
191
192#[cfg(test)]
193mod tests {
194 use git::repository::repo_path;
195 use indoc::indoc;
196 use pretty_assertions::assert_eq;
197
198 use super::*;
199
200 #[test]
201 fn test_parse_remote_url_given_https_url() {
202 let parsed_remote = Chromium
203 .parse_remote_url("https://chromium.googlesource.com/chromium/src")
204 .unwrap();
205
206 assert_eq!(
207 parsed_remote,
208 ParsedGitRemote {
209 owner: Arc::from(""),
210 repo: "chromium/src".into(),
211 }
212 );
213 }
214
215 #[test]
216 fn test_build_chromium_permalink() {
217 let permalink = Chromium.build_permalink(
218 ParsedGitRemote {
219 owner: Arc::from(""),
220 repo: "chromium/src".into(),
221 },
222 BuildPermalinkParams::new(
223 "fea5080b182fc92e3be0c01c5dece602fe70b588",
224 &repo_path("ui/base/cursor/cursor.h"),
225 None,
226 ),
227 );
228
229 let expected_url = "https://chromium.googlesource.com/chromium/src/+/fea5080b182fc92e3be0c01c5dece602fe70b588/ui/base/cursor/cursor.h";
230 assert_eq!(permalink.to_string(), expected_url.to_string())
231 }
232
233 #[test]
234 fn test_build_chromium_permalink_with_single_line_selection() {
235 let permalink = Chromium.build_permalink(
236 ParsedGitRemote {
237 owner: Arc::from(""),
238 repo: "chromium/src".into(),
239 },
240 BuildPermalinkParams::new(
241 "fea5080b182fc92e3be0c01c5dece602fe70b588",
242 &repo_path("ui/base/cursor/cursor.h"),
243 Some(18..18),
244 ),
245 );
246
247 let expected_url = "https://chromium.googlesource.com/chromium/src/+/fea5080b182fc92e3be0c01c5dece602fe70b588/ui/base/cursor/cursor.h#19";
248 assert_eq!(permalink.to_string(), expected_url.to_string())
249 }
250
251 #[test]
252 fn test_build_chromium_permalink_with_multi_line_selection() {
253 let permalink = Chromium.build_permalink(
254 ParsedGitRemote {
255 owner: Arc::from(""),
256 repo: "chromium/src".into(),
257 },
258 BuildPermalinkParams::new(
259 "fea5080b182fc92e3be0c01c5dece602fe70b588",
260 &repo_path("ui/base/cursor/cursor.h"),
261 Some(18..30),
262 ),
263 );
264
265 let expected_url = "https://chromium.googlesource.com/chromium/src/+/fea5080b182fc92e3be0c01c5dece602fe70b588/ui/base/cursor/cursor.h#19";
266 assert_eq!(permalink.to_string(), expected_url.to_string())
267 }
268
269 #[test]
270 fn test_chromium_pull_requests() {
271 let remote = ParsedGitRemote {
272 owner: Arc::from(""),
273 repo: "chromium/src".into(),
274 };
275
276 let message = "This does not contain a pull request";
277 assert!(Chromium.extract_pull_request(&remote, message).is_none());
278
279 // Pull request number at end of "Reviewed-on:" line
280 let message = indoc! {r#"
281 Test commit header
282
283 Test commit description with multiple
284 lines.
285
286 Bug: 1193775, 1270302
287 Change-Id: Id15e9b4d75cce43ebd5fe34f0fb37d5e1e811b66
288 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3310961
289 Reviewed-by: Test reviewer <test@example.com>
290 Cr-Commit-Position: refs/heads/main@{#1054973}
291 "#
292 };
293
294 assert_eq!(
295 Chromium
296 .extract_pull_request(&remote, message)
297 .unwrap()
298 .url
299 .as_str(),
300 "https://chromium-review.googlesource.com/c/chromium/src/+/3310961"
301 );
302 }
303}