| 1 | use std::fs; |
| 2 | use std::path::{ |
| 3 | Path, |
| 4 | PathBuf, |
| 5 | }; |
| 6 | |
| 7 | use serde::Serialize; |
| 8 | |
| 9 | pub use crate::dynamic_registry::{ |
| 10 | DynamicRepoRegistry, |
| 11 | MutableRepoRegistry, |
| 12 | RepoResolver, |
| 13 | }; |
| 14 | use crate::error::{ |
| 15 | Error, |
| 16 | Result, |
| 17 | }; |
| 18 | |
| 19 | const DEFAULT_GIT_DESCRIPTION: &str = |
| 20 | "Unnamed repository; edit this file 'description' to name the repository."; |
| 21 | |
| 22 | /// Information about a discovered bare git repository. |
| 23 | #[derive(Debug, Clone, Serialize)] |
| 24 | pub struct RepoInfo { |
| 25 | pub name: String, |
| 26 | pub relative_path: String, |
| 27 | #[serde(skip)] |
| 28 | pub absolute_path: PathBuf, |
| 29 | #[serde(skip_serializing_if = "Option::is_none")] |
| 30 | pub description: Option<String>, |
| 31 | } |
| 32 | |
| 33 | /// A store of discovered repositories under a root directory. |
| 34 | #[derive(Debug, Clone)] |
| 35 | pub struct RepoStore { |
| 36 | root: PathBuf, |
| 37 | max_depth: u32, |
| 38 | repos: Vec<RepoInfo>, |
| 39 | } |
| 40 | |
| 41 | impl RepoStore { |
| 42 | /// Scan `root` recursively up to `max_depth` levels for bare git repositories. |
| 43 | /// |
| 44 | /// `max_depth = 0` means only repositories directly inside `root`. |
| 45 | /// `max_depth = 3` means up to 3 levels of subdirectories below `root`. |
| 46 | pub fn discover(root: PathBuf, max_depth: u32) -> Result<Self> { |
| 47 | let root = root.canonicalize()?; |
| 48 | let mut repos = Vec::new(); |
| 49 | |
| 50 | // Walk starts at depth 0 (root itself). We scan children of root at depth 1, |
| 51 | // and allow descending up to max_depth subdirectory levels below root. |
| 52 | walk_dir(&root, &root, 0, max_depth, &mut repos)?; |
| 53 | |
| 54 | repos.sort_by(|a, b| a.relative_path.cmp(&b.relative_path)); |
| 55 | |
| 56 | Ok(Self { |
| 57 | root, |
| 58 | max_depth, |
| 59 | repos, |
| 60 | }) |
| 61 | } |
| 62 | |
| 63 | /// Resolve a relative path to a `RepoInfo`. |
| 64 | /// |
| 65 | /// Uses `crate::path::resolve_repo_path` for validation, then matches by |
| 66 | /// canonical absolute path. |
| 67 | pub fn resolve(&self, relative: &str) -> Result<&RepoInfo> { |
| 68 | let canonical = crate::path::resolve_repo_path(&self.root, relative)?; |
| 69 | self.repos |
| 70 | .iter() |
| 71 | .find(|r| r.absolute_path == canonical) |
| 72 | .ok_or_else(|| Error::RepoNotFound(relative.to_string())) |
| 73 | } |
| 74 | |
| 75 | /// Returns all discovered repositories, sorted by relative path. |
| 76 | pub fn list(&self) -> &[RepoInfo] { |
| 77 | &self.repos |
| 78 | } |
| 79 | |
| 80 | /// Returns the root directory used for discovery. |
| 81 | pub fn root(&self) -> &Path { |
| 82 | &self.root |
| 83 | } |
| 84 | |
| 85 | /// Returns the configured maximum discovery depth. |
| 86 | pub fn max_depth(&self) -> u32 { |
| 87 | self.max_depth |
| 88 | } |
| 89 | |
| 90 | /// Re-run repository discovery using the original root and max depth. |
| 91 | pub fn refresh(&mut self) -> Result<()> { |
| 92 | let refreshed = Self::discover(self.root.clone(), self.max_depth)?; |
| 93 | self.repos = refreshed.repos; |
| 94 | Ok(()) |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | /// Recursively walk `dir`, recording bare repositories. |
| 99 | /// |
| 100 | /// `depth` is the current depth relative to `root` (root itself is depth 0). |
| 101 | /// Entries *inside* root are at depth 1. We descend while `depth <= max_depth`. |
| 102 | fn walk_dir( |
| 103 | root: &Path, |
| 104 | dir: &Path, |
| 105 | depth: u32, |
| 106 | max_depth: u32, |
| 107 | repos: &mut Vec<RepoInfo>, |
| 108 | ) -> Result<()> { |
| 109 | let read = match fs::read_dir(dir) { |
| 110 | Ok(r) => r, |
| 111 | Err(e) if e.kind() == std::io::ErrorKind::PermissionDenied => return Ok(()), |
| 112 | Err(e) => return Err(Error::Io(e)), |
| 113 | }; |
| 114 | |
| 115 | for entry in read { |
| 116 | let entry = entry?; |
| 117 | let path = entry.path(); |
| 118 | |
| 119 | let metadata = match fs::metadata(&path) { |
| 120 | Ok(m) => m, |
| 121 | Err(_) => continue, |
| 122 | }; |
| 123 | |
| 124 | if !metadata.is_dir() { |
| 125 | continue; |
| 126 | } |
| 127 | |
| 128 | // Try to open as a git repository. |
| 129 | match gix::open(&path) { |
| 130 | Ok(repo) if repo.is_bare() => { |
| 131 | let absolute_path = path.canonicalize()?; |
| 132 | let relative_path = absolute_path |
| 133 | .strip_prefix(root) |
| 134 | .expect("discovered path must be inside root") |
| 135 | .to_string_lossy() |
| 136 | .into_owned(); |
| 137 | let name = absolute_path |
| 138 | .file_name() |
| 139 | .map(|n| n.to_string_lossy().into_owned()) |
| 140 | .unwrap_or_else(|| relative_path.clone()); |
| 141 | let description = read_description(&absolute_path); |
| 142 | |
| 143 | repos.push(RepoInfo { |
| 144 | name, |
| 145 | relative_path, |
| 146 | absolute_path, |
| 147 | description, |
| 148 | }); |
| 149 | // Do not descend into a repository directory. |
| 150 | } |
| 151 | _ => { |
| 152 | // Not a bare repo (or open failed). Descend if within max_depth. |
| 153 | if depth < max_depth { |
| 154 | walk_dir(root, &path, depth + 1, max_depth, repos)?; |
| 155 | } |
| 156 | } |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | Ok(()) |
| 161 | } |
| 162 | |
| 163 | /// Read the `description` file from a bare repository directory. |
| 164 | /// |
| 165 | /// Returns `None` if the file is absent, unreadable, or contains the default |
| 166 | /// git placeholder text. |
| 167 | fn read_description(repo_path: &Path) -> Option<String> { |
| 168 | let desc_path = repo_path.join("description"); |
| 169 | let content = fs::read_to_string(&desc_path).ok()?; |
| 170 | let trimmed = content.trim().to_string(); |
| 171 | if trimmed.is_empty() || trimmed == DEFAULT_GIT_DESCRIPTION { |
| 172 | None |
| 173 | } else { |
| 174 | Some(trimmed) |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | #[cfg(test)] |
| 179 | mod tests { |
| 180 | use std::path::Path; |
| 181 | use std::process::Command; |
| 182 | |
| 183 | use tempfile::TempDir; |
| 184 | |
| 185 | use super::*; |
| 186 | |
| 187 | fn create_bare_repo(path: &Path) { |
| 188 | Command::new("git") |
| 189 | .args(["init", "--bare", path.to_str().unwrap()]) |
| 190 | .output() |
| 191 | .expect("git init --bare failed"); |
| 192 | } |
| 193 | |
| 194 | #[test] |
| 195 | fn discover_finds_bare_repos() { |
| 196 | let dir = TempDir::new().unwrap(); |
| 197 | create_bare_repo(&dir.path().join("alpha.git")); |
| 198 | create_bare_repo(&dir.path().join("beta.git")); |
| 199 | |
| 200 | let store = RepoStore::discover(dir.path().to_path_buf(), 0).unwrap(); |
| 201 | assert_eq!(store.list().len(), 2); |
| 202 | } |
| 203 | |
| 204 | #[test] |
| 205 | fn discover_finds_nested_repos() { |
| 206 | let dir = TempDir::new().unwrap(); |
| 207 | let repo_path = dir.path().join("org").join("project.git"); |
| 208 | std::fs::create_dir_all(&repo_path).unwrap(); |
| 209 | create_bare_repo(&repo_path); |
| 210 | |
| 211 | let store = RepoStore::discover(dir.path().to_path_buf(), 1).unwrap(); |
| 212 | assert_eq!(store.list().len(), 1); |
| 213 | assert_eq!(store.list()[0].relative_path, "org/project.git"); |
| 214 | } |
| 215 | |
| 216 | #[test] |
| 217 | fn discover_respects_max_depth() { |
| 218 | let dir = TempDir::new().unwrap(); |
| 219 | let deep = dir.path().join("a").join("b").join("c").join("deep.git"); |
| 220 | std::fs::create_dir_all(&deep).unwrap(); |
| 221 | create_bare_repo(&deep); |
| 222 | |
| 223 | // max_depth 2 should not find it (it is 3 levels below root) |
| 224 | let store_shallow = RepoStore::discover(dir.path().to_path_buf(), 2).unwrap(); |
| 225 | assert_eq!(store_shallow.list().len(), 0); |
| 226 | |
| 227 | // max_depth 3 should find it |
| 228 | let store_deep = RepoStore::discover(dir.path().to_path_buf(), 3).unwrap(); |
| 229 | assert_eq!(store_deep.list().len(), 1); |
| 230 | } |
| 231 | |
| 232 | #[test] |
| 233 | fn discover_max_depth_zero_only_root_level() { |
| 234 | let dir = TempDir::new().unwrap(); |
| 235 | create_bare_repo(&dir.path().join("root-level.git")); |
| 236 | let nested = dir.path().join("nested").join("deep.git"); |
| 237 | std::fs::create_dir_all(&nested).unwrap(); |
| 238 | create_bare_repo(&nested); |
| 239 | |
| 240 | let store = RepoStore::discover(dir.path().to_path_buf(), 0).unwrap(); |
| 241 | assert_eq!(store.list().len(), 1); |
| 242 | assert_eq!(store.list()[0].relative_path, "root-level.git"); |
| 243 | } |
| 244 | |
| 245 | #[test] |
| 246 | fn discover_ignores_non_bare_dirs() { |
| 247 | let dir = TempDir::new().unwrap(); |
| 248 | // A plain directory -- not a git repo |
| 249 | std::fs::create_dir(dir.path().join("just-a-dir")).unwrap(); |
| 250 | |
| 251 | let store = RepoStore::discover(dir.path().to_path_buf(), 0).unwrap(); |
| 252 | assert_eq!(store.list().len(), 0); |
| 253 | } |
| 254 | |
| 255 | #[test] |
| 256 | fn resolve_existing_repo() { |
| 257 | let dir = TempDir::new().unwrap(); |
| 258 | create_bare_repo(&dir.path().join("myrepo.git")); |
| 259 | |
| 260 | let store = RepoStore::discover(dir.path().to_path_buf(), 0).unwrap(); |
| 261 | let info = store.resolve("myrepo.git").unwrap(); |
| 262 | assert_eq!(info.relative_path, "myrepo.git"); |
| 263 | assert_eq!(info.name, "myrepo.git"); |
| 264 | } |
| 265 | |
| 266 | #[test] |
| 267 | fn resolve_missing_repo() { |
| 268 | let dir = TempDir::new().unwrap(); |
| 269 | create_bare_repo(&dir.path().join("exists.git")); |
| 270 | |
| 271 | let store = RepoStore::discover(dir.path().to_path_buf(), 0).unwrap(); |
| 272 | let err = store.resolve("nope.git").unwrap_err(); |
| 273 | assert!(matches!(err, Error::RepoNotFound(_))); |
| 274 | } |
| 275 | |
| 276 | #[test] |
| 277 | fn reads_description_file() { |
| 278 | let dir = TempDir::new().unwrap(); |
| 279 | let repo_path = dir.path().join("described.git"); |
| 280 | create_bare_repo(&repo_path); |
| 281 | std::fs::write(repo_path.join("description"), "A test repository\n").unwrap(); |
| 282 | |
| 283 | let store = RepoStore::discover(dir.path().to_path_buf(), 0).unwrap(); |
| 284 | assert_eq!(store.list().len(), 1); |
| 285 | assert_eq!( |
| 286 | store.list()[0].description.as_deref(), |
| 287 | Some("A test repository") |
| 288 | ); |
| 289 | } |
| 290 | |
| 291 | #[test] |
| 292 | fn refresh_picks_up_new_repositories() { |
| 293 | let dir = TempDir::new().unwrap(); |
| 294 | create_bare_repo(&dir.path().join("alpha.git")); |
| 295 | |
| 296 | let mut store = RepoStore::discover(dir.path().to_path_buf(), 0).unwrap(); |
| 297 | assert_eq!(store.list().len(), 1); |
| 298 | |
| 299 | create_bare_repo(&dir.path().join("beta.git")); |
| 300 | store.refresh().unwrap(); |
| 301 | |
| 302 | assert_eq!(store.list().len(), 2); |
| 303 | assert!(store.list().iter().any(|repo| repo.name == "beta.git")); |
| 304 | } |
| 305 | } |