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// SPDX-License-Identifier: AGPL-3.0-only
// SPDX-FileCopyrightText: Copyright (c) 2025 Runxi Yu <https://runxiyu.org>
package main
import (
"net/http"
"strings"
"time"
"github.com/go-git/go-git/v5"
"github.com/go-git/go-git/v5/plumbing"
"github.com/go-git/go-git/v5/plumbing/object"
"github.com/go-git/go-git/v5/plumbing/storer"
)
// httpHandleRepoIndex provides the front page of a repo.
func httpHandleRepoIndex(writer http.ResponseWriter, _ *http.Request, params map[string]any) {
var repo *git.Repository
var repoName string
var groupPath []string
var refHash plumbing.Hash
var refHashSlice []byte
var err error
var commitObj *object.Commit
var tree *object.Tree
var notes []string
var branches []string
var branchesIter storer.ReferenceIter
var commits []commitDisplay
repo, repoName, groupPath = params["repo"].(*git.Repository), params["repo_name"].(string), params["group_path"].([]string)
if strings.Contains(repoName, "\n") || sliceContainsNewlines(groupPath) {
notes = append(notes, "Path contains newlines; HTTP Git access impossible")
}
refHash, err = getRefHash(repo, params["ref_type"].(string), params["ref_name"].(string))
if err != nil {
goto no_ref
}
refHashSlice = refHash[:]
branchesIter, err = repo.Branches()
if err == nil {
_ = branchesIter.ForEach(func(branch *plumbing.Reference) error {
branches = append(branches, branch.Name().Short())
return nil
})
}
params["branches"] = branches
if value, found := indexCommitsDisplayCache.Get(refHashSlice); found {
if value != nil {
commits = value
} else {
goto readme
}
} else {
start := time.Now()
commits, err = getRecentCommitsDisplay(repo, refHash, 5)
if err != nil {
commits = nil
}
cost := time.Since(start).Nanoseconds()
indexCommitsDisplayCache.Set(refHashSlice, commits, cost)
if err != nil {
goto readme
}
}
params["commits"] = commits
readme:
if value, found := treeReadmeCache.Get(refHashSlice); found {
params["files"] = value.DisplayTree
params["readme_filename"] = value.ReadmeFilename
params["readme"] = value.ReadmeRendered
} else {
start := time.Now()
if commitObj, err = repo.CommitObject(refHash); err != nil {
goto no_ref
}
if tree, err = commitObj.Tree(); err != nil {
goto no_ref
}
displayTree := makeDisplayTree(tree)
readmeFilename, readmeRendered := renderReadmeAtTree(tree)
cost := time.Since(start).Nanoseconds()
params["files"] = displayTree
params["readme_filename"] = readmeFilename
params["readme"] = readmeRendered
entry := treeReadmeCacheEntry{
DisplayTree: displayTree,
ReadmeFilename: readmeFilename,
ReadmeRendered: readmeRendered,
}
treeReadmeCache.Set(refHashSlice, entry, cost)
}
no_ref:
params["http_clone_url"] = genHTTPRemoteURL(groupPath, repoName)
params["ssh_clone_url"] = genSSHRemoteURL(groupPath, repoName)
params["notes"] = notes
renderTemplate(writer, "repo_index", params)
}
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