Monorepo for Tangled
tangled.org
1package xrpc
2
3import (
4 "context"
5 "fmt"
6 "net/http"
7 "path/filepath"
8 "time"
9 "unicode/utf8"
10
11 "github.com/bluesky-social/indigo/atproto/atclient"
12 "github.com/bluesky-social/indigo/atproto/syntax"
13 "tangled.org/core/api/tangled"
14 "tangled.org/core/appview/pages/markup"
15 "tangled.org/core/knotserver/git"
16 "tangled.org/core/types"
17)
18
19func (x *Xrpc) GetTree(w http.ResponseWriter, r *http.Request) {
20 var (
21 repoQuery = r.URL.Query().Get("repo")
22 ref = r.URL.Query().Get("ref") // ref can be empty (git.Open handles this)
23 path = r.URL.Query().Get("path") // path can be empty (defaults to root)
24 )
25 l := x.logger.With("method", "git.getTree", "repo", repoQuery, "ref", ref)
26
27 repo, err := syntax.ParseATURI(repoQuery)
28 if err != nil || repo.RecordKey() == "" {
29 writeJson(w, http.StatusBadRequest, atclient.ErrorBody{Name: "BadRequest", Message: fmt.Sprintf("repo parameter invalid: %s", repoQuery)})
30 return
31 }
32
33 out, err := x.getTree(r.Context(), repo, ref, path)
34 if err != nil {
35 l.Warn("local mirror failed, trying proxy", "repo", repo, "err", err)
36 if x.proxyToKnot(w, r, repo) {
37 return
38 }
39 writeJson(w, http.StatusInternalServerError, atclient.ErrorBody{Name: "InternalServerError", Message: "failed to get tree"})
40 return
41 }
42 writeJson(w, http.StatusOK, out)
43}
44
45func (x *Xrpc) getTree(ctx context.Context, repo syntax.ATURI, ref, path string) (*tangled.GitTempGetTree_Output, error) {
46 repoPath, err := x.makeRepoPath(ctx, repo)
47 if err != nil {
48 return nil, fmt.Errorf("failed to resolve repo at-uri: %w", err)
49 }
50
51 gr, err := git.Open(repoPath, ref)
52 if err != nil {
53 return nil, fmt.Errorf("opening git repo: %w", err)
54 }
55
56 files, err := gr.FileTree(ctx, path)
57 if err != nil {
58 return nil, fmt.Errorf("reading file tree: %w", err)
59 }
60
61 // if any of these files are a readme candidate, pass along its blob contents too
62 var readmeFileName string
63 var readmeContents string
64 for _, file := range files {
65 if markup.IsReadmeFile(file.Name) {
66 contents, err := gr.RawContent(filepath.Join(path, file.Name))
67 if err != nil {
68 x.logger.Error("failed to read contents of file", "path", path, "file", file.Name)
69 }
70
71 if utf8.Valid(contents) {
72 readmeFileName = file.Name
73 readmeContents = string(contents)
74 break
75 }
76 }
77 }
78
79 // convert NiceTree -> tangled.RepoTempGetTree_TreeEntry
80 treeEntries := make([]*tangled.GitTempGetTree_TreeEntry, len(files))
81 for i, file := range files {
82 entry := &tangled.GitTempGetTree_TreeEntry{
83 Name: file.Name,
84 Mode: file.Mode,
85 Size: file.Size,
86 }
87 if file.LastCommit != nil {
88 entry.Last_commit = &tangled.GitTempGetTree_LastCommit{
89 Hash: file.LastCommit.Hash.String(),
90 Message: file.LastCommit.Message,
91 When: file.LastCommit.When.Format(time.RFC3339),
92 }
93 }
94 treeEntries[i] = entry
95 }
96
97 var parentPtr *string
98 if path != "" {
99 parentPtr = &path
100 }
101
102 var dotdotPtr *string
103 if path != "" {
104 dotdot := filepath.Dir(path)
105 if dotdot != "." {
106 dotdotPtr = &dotdot
107 }
108 }
109
110 // find the most recent commit across all entries for the directory-level last commit
111 var lastCommitInfo *types.LastCommitInfo
112 for _, file := range files {
113 if file.LastCommit == nil {
114 continue
115 }
116 if lastCommitInfo == nil {
117 lastCommitInfo = file.LastCommit
118 continue
119 }
120 if file.LastCommit.When.After(lastCommitInfo.When) {
121 lastCommitInfo = file.LastCommit
122 }
123 }
124
125 var lastCommit *tangled.GitTempGetTree_LastCommit
126 if lastCommitInfo != nil {
127 lastCommit = &tangled.GitTempGetTree_LastCommit{
128 Hash: lastCommitInfo.Hash.String(),
129 Message: lastCommitInfo.Message,
130 When: lastCommitInfo.When.Format(time.RFC3339),
131 }
132 if commit, err := gr.Commit(lastCommitInfo.Hash); err == nil {
133 lastCommit.Author = &tangled.GitTempGetTree_Signature{
134 Name: commit.Author.Name,
135 Email: commit.Author.Email,
136 }
137 }
138 }
139
140 return &tangled.GitTempGetTree_Output{
141 Ref: ref,
142 Parent: parentPtr,
143 Dotdot: dotdotPtr,
144 Files: treeEntries,
145 LastCommit: lastCommit,
146 Readme: &tangled.GitTempGetTree_Readme{
147 Filename: readmeFileName,
148 Contents: readmeContents,
149 },
150 }, nil
151}