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// SPDX-License-Identifier: AGPL-3.0-only
// SPDX-FileContributor: Runxi Yu <https://runxiyu.org>
package main
import (
"html/template"
"iter"
"net/http"
"strings"
"time"
"github.com/dgraph-io/ristretto/v2"
"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"
"go.lindenii.runxiyu.org/lindenii-common/clog"
)
type indexPageCacheEntry struct {
DisplayTree []displayTreeEntry
ReadmeFilename string
ReadmeRendered template.HTML
}
var indexPageCache *ristretto.Cache[[]byte, indexPageCacheEntry]
func init() {
var err error
indexPageCache, err = ristretto.NewCache(&ristretto.Config[[]byte, indexPageCacheEntry]{
NumCounters: 1e4,
MaxCost: 1 << 30,
BufferItems: 64,
})
if err != nil {
clog.Fatal(1, "Error initializing indexPageCache: "+err.Error())
}
}
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 logOptions git.LogOptions
var commitIter object.CommitIter
var commitIterSeq iter.Seq[*object.Commit]
var commitObj *object.Commit
var tree *object.Tree
var notes []string
var branches []string
var branchesIter storer.ReferenceIter
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
// TODO: Cache
logOptions = git.LogOptions{From: refHash} //exhaustruct:ignore
if commitIter, err = repo.Log(&logOptions); err != nil {
goto no_ref
}
commitIterSeq, params["commits_err"] = commitIterSeqErr(commitIter)
params["commits"] = iterSeqLimit(commitIterSeq, 3)
if value, found := indexPageCache.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 := indexPageCacheEntry{
DisplayTree: displayTree,
ReadmeFilename: readmeFilename,
ReadmeRendered: readmeRendered,
}
indexPageCache.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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