mugit/internal/handlers/repo.go (view raw)
| 1 | package handlers |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "errors" |
| 6 | "fmt" |
| 7 | "html/template" |
| 8 | "io" |
| 9 | "log/slog" |
| 10 | "net/http" |
| 11 | "os" |
| 12 | "path/filepath" |
| 13 | "sort" |
| 14 | "strconv" |
| 15 | "strings" |
| 16 | "time" |
| 17 | |
| 18 | "github.com/yuin/goldmark" |
| 19 | emoji "github.com/yuin/goldmark-emoji" |
| 20 | "github.com/yuin/goldmark/extension" |
| 21 | "github.com/yuin/goldmark/renderer/html" |
| 22 | "olexsmir.xyz/mugit/internal/git" |
| 23 | "olexsmir.xyz/mugit/internal/mdx" |
| 24 | ) |
| 25 | |
| 26 | type Meta struct { |
| 27 | Title string |
| 28 | Description string |
| 29 | Host string |
| 30 | IsEmpty bool |
| 31 | GoMod bool |
| 32 | SSHEnabled bool |
| 33 | } |
| 34 | |
| 35 | type RepoBase struct { |
| 36 | Ref string |
| 37 | Desc string |
| 38 | } |
| 39 | |
| 40 | type PageData[T any] struct { |
| 41 | Meta Meta |
| 42 | RepoName string // empty for non-repo pages, needed for _head.html to compile |
| 43 | P T |
| 44 | } |
| 45 | |
| 46 | func (h *handlers) indexHandler(w http.ResponseWriter, r *http.Request) { |
| 47 | repos, err := h.listPublicRepos() |
| 48 | if err != nil { |
| 49 | h.write500(w, err) |
| 50 | return |
| 51 | } |
| 52 | h.templ(w, "index", h.pageData(nil, repos)) |
| 53 | } |
| 54 | |
| 55 | type RepoIndex struct { |
| 56 | Desc string |
| 57 | IsEmpty bool |
| 58 | Readme template.HTML |
| 59 | Ref string |
| 60 | Commits []*git.Commit |
| 61 | IsMirror bool |
| 62 | MirrorURL string |
| 63 | MirrorLastSync time.Time |
| 64 | } |
| 65 | |
| 66 | func (h *handlers) repoIndex(w http.ResponseWriter, r *http.Request) { |
| 67 | repo, err := h.openPublicRepo(r.PathValue("name"), "") |
| 68 | if err != nil { |
| 69 | h.write404(w, err) |
| 70 | return |
| 71 | } |
| 72 | |
| 73 | desc, err := repo.Description() |
| 74 | if err != nil { |
| 75 | h.write500(w, err) |
| 76 | return |
| 77 | } |
| 78 | |
| 79 | p := RepoIndex{Desc: desc, IsEmpty: repo.IsEmpty()} |
| 80 | if p.IsEmpty { |
| 81 | h.templ(w, "repo_index", h.pageData(repo, p)) |
| 82 | return |
| 83 | } |
| 84 | |
| 85 | p.Ref, err = repo.FindMasterBranch(h.c.Repo.Masters) |
| 86 | if err != nil { |
| 87 | h.write500(w, err) |
| 88 | return |
| 89 | } |
| 90 | |
| 91 | p.Readme, err = h.renderReadme(repo, p.Ref, "") |
| 92 | if err != nil { |
| 93 | h.write500(w, err) |
| 94 | return |
| 95 | } |
| 96 | |
| 97 | p.Commits, err = repo.Commits("") |
| 98 | if err != nil { |
| 99 | h.write500(w, err) |
| 100 | return |
| 101 | } |
| 102 | |
| 103 | if len(p.Commits) >= 3 { |
| 104 | p.Commits = p.Commits[:3:3] |
| 105 | } |
| 106 | |
| 107 | if isMirror, err := repo.IsMirror(); isMirror && err == nil { |
| 108 | p.IsMirror = true |
| 109 | p.MirrorURL, _ = repo.RemoteURL() |
| 110 | p.MirrorLastSync, _ = repo.LastSync() |
| 111 | } |
| 112 | |
| 113 | h.templ(w, "repo_index", h.pageData(repo, p)) |
| 114 | } |
| 115 | |
| 116 | type RepoTree struct { |
| 117 | Desc string |
| 118 | Ref string |
| 119 | Tree []git.NiceTree |
| 120 | ParentPath string |
| 121 | DotDot string |
| 122 | Readme template.HTML |
| 123 | } |
| 124 | |
| 125 | func (h *handlers) repoTreeHandler(w http.ResponseWriter, r *http.Request) { |
| 126 | name := r.PathValue("name") |
| 127 | ref := h.parseRef(r.PathValue("ref")) |
| 128 | treePath := r.PathValue("rest") |
| 129 | |
| 130 | repo, err := h.openPublicRepo(name, ref) |
| 131 | if err != nil { |
| 132 | h.write404(w, err) |
| 133 | return |
| 134 | } |
| 135 | |
| 136 | desc, err := repo.Description() |
| 137 | if err != nil { |
| 138 | h.write500(w, err) |
| 139 | return |
| 140 | } |
| 141 | |
| 142 | tree, err := repo.FileTree(treePath) |
| 143 | if err != nil { |
| 144 | h.write500(w, err) |
| 145 | return |
| 146 | } |
| 147 | |
| 148 | readme, err := h.renderReadme(repo, ref, treePath) |
| 149 | if err != nil { |
| 150 | h.write500(w, err) |
| 151 | return |
| 152 | } |
| 153 | |
| 154 | h.templ(w, "repo_tree", h.pageData(repo, RepoTree{ |
| 155 | Desc: desc, |
| 156 | Ref: ref, |
| 157 | Tree: tree, |
| 158 | ParentPath: treePath, |
| 159 | DotDot: filepath.Dir(treePath), |
| 160 | Readme: readme, |
| 161 | })) |
| 162 | } |
| 163 | |
| 164 | type RepoFile struct { |
| 165 | Ref string |
| 166 | Desc string |
| 167 | LineCount []int |
| 168 | Path string |
| 169 | IsImage bool |
| 170 | IsBinary bool |
| 171 | Content string |
| 172 | Mime string |
| 173 | Size int64 |
| 174 | } |
| 175 | |
| 176 | func (h *handlers) fileContentsHandler(w http.ResponseWriter, r *http.Request) { |
| 177 | name := r.PathValue("name") |
| 178 | ref := h.parseRef(r.PathValue("ref")) |
| 179 | treePath := r.PathValue("rest") |
| 180 | |
| 181 | var raw bool |
| 182 | if rawParam, err := strconv.ParseBool(r.URL.Query().Get("raw")); err == nil { |
| 183 | raw = rawParam |
| 184 | } |
| 185 | |
| 186 | repo, err := h.openPublicRepo(name, ref) |
| 187 | if err != nil { |
| 188 | h.write404(w, err) |
| 189 | return |
| 190 | } |
| 191 | |
| 192 | fc, err := repo.FileContent(treePath) |
| 193 | if err != nil { |
| 194 | if errors.Is(err, git.ErrFileNotFound) { |
| 195 | h.write404(w, err) |
| 196 | return |
| 197 | } |
| 198 | h.write500(w, err) |
| 199 | return |
| 200 | } |
| 201 | |
| 202 | if raw { |
| 203 | w.Header().Set("Content-Type", fc.Mime) |
| 204 | w.WriteHeader(http.StatusOK) |
| 205 | w.Write(fc.Content) |
| 206 | return |
| 207 | } |
| 208 | |
| 209 | p := RepoFile{ |
| 210 | Ref: ref, |
| 211 | Path: treePath, |
| 212 | IsImage: fc.IsImage(), |
| 213 | IsBinary: fc.IsBinary, |
| 214 | Mime: fc.Mime, |
| 215 | Size: fc.Size, |
| 216 | } |
| 217 | |
| 218 | p.Desc, err = repo.Description() |
| 219 | if err != nil { |
| 220 | h.write500(w, err) |
| 221 | return |
| 222 | } |
| 223 | |
| 224 | if !fc.IsImage() && !fc.IsBinary { |
| 225 | contentStr := fc.String() |
| 226 | lc, err := countLines(strings.NewReader(contentStr)) |
| 227 | if err != nil { |
| 228 | slog.Error("failed to count line numbers", "err", err) |
| 229 | } |
| 230 | lines := make([]int, lc) |
| 231 | for i := range lines { |
| 232 | lines[i] = i + 1 |
| 233 | } |
| 234 | p.Content = contentStr |
| 235 | p.LineCount = lines |
| 236 | } |
| 237 | |
| 238 | h.templ(w, "repo_file", h.pageData(repo, p)) |
| 239 | } |
| 240 | |
| 241 | type RepoLog struct { |
| 242 | Desc string |
| 243 | Commits []*git.Commit |
| 244 | Ref string |
| 245 | NextAfter string |
| 246 | } |
| 247 | |
| 248 | func (h *handlers) logHandler(w http.ResponseWriter, r *http.Request) { |
| 249 | name := r.PathValue("name") |
| 250 | ref := h.parseRef(r.PathValue("ref")) |
| 251 | after := r.URL.Query().Get("after") |
| 252 | |
| 253 | repo, err := h.openPublicRepo(name, ref) |
| 254 | if err != nil { |
| 255 | h.write404(w, err) |
| 256 | return |
| 257 | } |
| 258 | |
| 259 | desc, err := repo.Description() |
| 260 | if err != nil { |
| 261 | h.write500(w, err) |
| 262 | return |
| 263 | } |
| 264 | |
| 265 | commits, err := repo.Commits(after) |
| 266 | if err != nil { |
| 267 | h.write500(w, err) |
| 268 | return |
| 269 | } |
| 270 | |
| 271 | // if we got full page of commits, we probably have more. |
| 272 | // NOTE: this has edge case, when last page has git.CommitsPage, "load more would be shown" |
| 273 | nextAfter := "" |
| 274 | if len(commits) == git.CommitsPage && len(commits) > 0 { |
| 275 | nextAfter = commits[len(commits)-1].HashShort |
| 276 | } |
| 277 | |
| 278 | h.templ(w, "repo_log", h.pageData(repo, RepoLog{ |
| 279 | Desc: desc, |
| 280 | Ref: ref, |
| 281 | Commits: commits, |
| 282 | NextAfter: nextAfter, |
| 283 | })) |
| 284 | } |
| 285 | |
| 286 | type RepoCommit struct { |
| 287 | Diff *git.NiceDiff |
| 288 | Ref string |
| 289 | Desc string |
| 290 | } |
| 291 | |
| 292 | func (h *handlers) commitHandler(w http.ResponseWriter, r *http.Request) { |
| 293 | name := r.PathValue("name") |
| 294 | ref := h.parseRef(r.PathValue("ref")) |
| 295 | |
| 296 | repo, err := h.openPublicRepo(name, ref) |
| 297 | if err != nil { |
| 298 | h.write404(w, err) |
| 299 | return |
| 300 | } |
| 301 | |
| 302 | diff, err := h.getDiff(repo, ref) |
| 303 | if err != nil { |
| 304 | h.write500(w, err) |
| 305 | return |
| 306 | } |
| 307 | |
| 308 | desc, err := repo.Description() |
| 309 | if err != nil { |
| 310 | h.write500(w, err) |
| 311 | return |
| 312 | } |
| 313 | |
| 314 | h.templ(w, "repo_commit", h.pageData(repo, RepoCommit{ |
| 315 | Desc: desc, |
| 316 | Ref: ref, |
| 317 | Diff: diff, |
| 318 | })) |
| 319 | } |
| 320 | |
| 321 | type RepoRefs struct { |
| 322 | Desc string |
| 323 | Ref string |
| 324 | Branches []*git.Branch |
| 325 | Tags []*git.TagReference |
| 326 | } |
| 327 | |
| 328 | func (h *handlers) refsHandler(w http.ResponseWriter, r *http.Request) { |
| 329 | repo, err := h.openPublicRepo(r.PathValue("name"), "") |
| 330 | if err != nil { |
| 331 | h.write404(w, err) |
| 332 | return |
| 333 | } |
| 334 | |
| 335 | desc, err := repo.Description() |
| 336 | if err != nil { |
| 337 | h.write500(w, err) |
| 338 | return |
| 339 | } |
| 340 | |
| 341 | master, err := repo.FindMasterBranch(h.c.Repo.Masters) |
| 342 | if err != nil { |
| 343 | h.write500(w, err) |
| 344 | return |
| 345 | } |
| 346 | |
| 347 | branches, err := repo.Branches() |
| 348 | if err != nil { |
| 349 | h.write500(w, err) |
| 350 | return |
| 351 | } |
| 352 | |
| 353 | // repo should have at least one branch, tags are *optional* |
| 354 | tags, _ := repo.Tags() |
| 355 | |
| 356 | h.templ(w, "repo_refs", h.pageData(repo, RepoRefs{ |
| 357 | Desc: desc, |
| 358 | Ref: master, |
| 359 | Tags: tags, |
| 360 | Branches: branches, |
| 361 | })) |
| 362 | } |
| 363 | |
| 364 | func countLines(r io.Reader) (int, error) { |
| 365 | buf := make([]byte, 32*1024) |
| 366 | bufLen := 0 |
| 367 | count := 0 |
| 368 | nl := []byte{'\n'} |
| 369 | |
| 370 | for { |
| 371 | c, err := r.Read(buf) |
| 372 | if c > 0 { |
| 373 | bufLen += c |
| 374 | } |
| 375 | count += bytes.Count(buf[:c], nl) |
| 376 | |
| 377 | switch { |
| 378 | case err == io.EOF: |
| 379 | // handle last line not having a newline at the end |
| 380 | if bufLen >= 1 && buf[(bufLen-1)%(32*1024)] != '\n' { |
| 381 | count++ |
| 382 | } |
| 383 | return count, nil |
| 384 | case err != nil: |
| 385 | return 0, err |
| 386 | } |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | type repoList struct { |
| 391 | Name string |
| 392 | Desc string |
| 393 | LastCommit time.Time |
| 394 | } |
| 395 | |
| 396 | func (h *handlers) listPublicRepos() ([]repoList, error) { |
| 397 | if v, found := h.repoListCache.Get("repo_list"); found { |
| 398 | return v, nil |
| 399 | } |
| 400 | |
| 401 | dirs, err := os.ReadDir(h.c.Repo.Dir) |
| 402 | if err != nil { |
| 403 | return nil, err |
| 404 | } |
| 405 | |
| 406 | var repos []repoList |
| 407 | var errs []error |
| 408 | for _, dir := range dirs { |
| 409 | if !dir.IsDir() { |
| 410 | continue |
| 411 | } |
| 412 | |
| 413 | name := dir.Name() |
| 414 | repo, err := h.openPublicRepo(name, "") |
| 415 | if err != nil { |
| 416 | // if it's not git repo, just ignore it |
| 417 | continue |
| 418 | } |
| 419 | |
| 420 | desc, err := repo.Description() |
| 421 | if err != nil { |
| 422 | errs = append(errs, err) |
| 423 | continue |
| 424 | } |
| 425 | |
| 426 | lastCommit, err := repo.LastCommit() |
| 427 | if err != nil { |
| 428 | errs = append(errs, err) |
| 429 | continue |
| 430 | } |
| 431 | |
| 432 | repos = append(repos, repoList{ |
| 433 | Name: repo.Name(), |
| 434 | Desc: desc, |
| 435 | LastCommit: lastCommit.Committed, |
| 436 | }) |
| 437 | } |
| 438 | |
| 439 | sort.Slice(repos, func(i, j int) bool { |
| 440 | return repos[j].LastCommit.Before(repos[i].LastCommit) |
| 441 | }) |
| 442 | |
| 443 | h.repoListCache.Set("repo_list", repos) |
| 444 | return repos, errors.Join(errs...) |
| 445 | } |
| 446 | |
| 447 | func (h handlers) getDiff(r *git.Repo, ref string) (*git.NiceDiff, error) { |
| 448 | cacheKey := fmt.Sprintf("%s:%s", r.Name(), ref) |
| 449 | if v, found := h.diffCache.Get(cacheKey); found { |
| 450 | return v, nil |
| 451 | } |
| 452 | |
| 453 | diff, err := r.Diff() |
| 454 | if err != nil { |
| 455 | return nil, err |
| 456 | } |
| 457 | |
| 458 | h.diffCache.Set(cacheKey, diff) |
| 459 | return diff, nil |
| 460 | } |
| 461 | |
| 462 | var markdown = goldmark.New( |
| 463 | goldmark.WithRendererOptions(html.WithUnsafe()), |
| 464 | goldmark.WithExtensions( |
| 465 | extension.GFM, |
| 466 | extension.Linkify, |
| 467 | emoji.Emoji, |
| 468 | mdx.RelativeLink, |
| 469 | )) |
| 470 | |
| 471 | func (h *handlers) renderReadme(r *git.Repo, ref, treePath string) (template.HTML, error) { |
| 472 | name := r.Name() |
| 473 | cacheKey := fmt.Sprintf("%s:%s:%s", name, ref, treePath) |
| 474 | if v, found := h.readmeCache.Get(cacheKey); found { |
| 475 | return v, nil |
| 476 | } |
| 477 | |
| 478 | var readmeContents template.HTML |
| 479 | for _, readme := range h.c.Repo.Readmes { |
| 480 | fullPath := filepath.Join(treePath, readme) |
| 481 | fc, ferr := r.FileContent(fullPath) |
| 482 | if ferr != nil { |
| 483 | continue |
| 484 | } |
| 485 | |
| 486 | if fc.IsBinary { |
| 487 | continue |
| 488 | } |
| 489 | |
| 490 | ext := filepath.Ext(readme) |
| 491 | content := fc.String() |
| 492 | if len(content) > 0 { |
| 493 | switch ext { |
| 494 | case ".md", ".markdown", ".mkd": |
| 495 | var buf bytes.Buffer |
| 496 | if cerr := markdown.Convert([]byte(content), &buf, |
| 497 | mdx.NewRelativeLinkCtx(name, fullPath)); cerr != nil { |
| 498 | return "", cerr |
| 499 | } |
| 500 | readmeContents = template.HTML(buf.String()) |
| 501 | default: |
| 502 | readmeContents = template.HTML(fmt.Sprintf(`<pre>%s</pre>`, content)) |
| 503 | } |
| 504 | break |
| 505 | } |
| 506 | } |
| 507 | |
| 508 | h.readmeCache.Set(cacheKey, readmeContents) |
| 509 | return readmeContents, nil |
| 510 | } |
| 511 | |
| 512 | func (h handlers) pageData(repo *git.Repo, p any) PageData[any] { |
| 513 | var name string |
| 514 | var gomod, empty bool |
| 515 | if repo != nil { |
| 516 | gomod = repo.IsGoMod() |
| 517 | empty = repo.IsEmpty() |
| 518 | name = repo.Name() |
| 519 | } |
| 520 | |
| 521 | return PageData[any]{ |
| 522 | P: p, |
| 523 | RepoName: name, |
| 524 | Meta: Meta{ |
| 525 | Title: h.c.Meta.Title, |
| 526 | Description: h.c.Meta.Description, |
| 527 | Host: h.c.Meta.Host, |
| 528 | GoMod: gomod, |
| 529 | SSHEnabled: h.c.SSH.Enable, |
| 530 | IsEmpty: empty, |
| 531 | }, |
| 532 | } |
| 533 | } |