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/**
* AltGit - altgit
*
* This file is licensed under the Affero General Public License version 3 or
* later. See the COPYING file.
*
* @author Paolo Lulli <kevwe.com>
* @copyright Paolo Lulli 2026
*/
package gitrepo
import (
"altgit/internal/config"
"fmt"
"net/url"
"os"
"os/exec"
"path/filepath"
"strings"
)
func gitAt(path string, args ...string) (string, error) {
cmd := exec.Command("git", append([]string{"-C", path}, args...)...)
out, err := cmd.Output()
return strings.TrimSpace(string(out)), err
}
func gitCmdStr(args ...string) string { return strings.Join(args, " ") }
func ListRepos(cfg config.RepositoryBrowserConfiguration) []RepoInfo {
entries, err := os.ReadDir(cfg.Root)
if err != nil {
return nil
}
var repos []RepoInfo
for _, e := range entries {
if !e.IsDir() {
continue
}
p := filepath.Join(cfg.Root, e.Name())
// Must be a git repo
if _, err := os.Stat(filepath.Join(p, ".git")); err != nil {
// Also accept bare repos
if _, err2 := os.Stat(filepath.Join(p, "HEAD")); err2 != nil {
continue
}
}
branch, _ := gitAt(p, "rev-parse", "--abbrev-ref", "HEAD")
if branch == "" {
branch = "main"
}
last, _ := gitAt(p, "log", "-1", "--pretty=format:%ar", branch)
desc := ""
if d, err := os.ReadFile(filepath.Join(p, "description")); err == nil {
s := strings.TrimSpace(string(d))
if !strings.HasPrefix(s, "Unnamed repository") {
desc = s
}
}
repos = append(repos, RepoInfo{
Name: e.Name(),
Description: desc,
LastCommit: last,
Branch: branch,
})
}
return repos
}
func ListBranches(rp string) ([]string, string) {
out, err := gitAt(rp, "branch", "--format=%(refname:short)")
if err != nil {
return nil, "HEAD"
}
cur, _ := gitAt(rp, "rev-parse", "--abbrev-ref", "HEAD")
var branches []string
for _, b := range strings.Split(out, "\n") {
b = strings.TrimSpace(b)
if b != "" {
branches = append(branches, b)
}
}
if cur == "" {
cur = "HEAD"
}
return branches, cur
}
func BuildBranchLinks(all []string, activeBr, repoName, tab string) []BranchLink {
var links []BranchLink
for _, b := range all {
var u string
switch tab {
case "files":
u = fmt.Sprintf("/%s/?branch=%s", repoName, url.QueryEscape(b))
default:
u = fmt.Sprintf("/%s/%s?branch=%s", repoName, tab, url.QueryEscape(b))
}
links = append(links, BranchLink{Name: b, URL: u, Active: b == activeBr})
}
return links
}
func ListFiles(rp, branch string) ([]FileEntry, string, error) {
args := []string{"ls-tree", "-r", "--name-only", branch}
out, err := gitAt(rp, args...)
cmd := gitCmdStr(args...)
if err != nil {
return nil, cmd, err
}
var files []FileEntry
for _, l := range strings.Split(out, "\n") {
l = strings.TrimSpace(l)
if l == "" {
continue
}
countOut, _ := gitAt(rp, "log", "--oneline", "--follow", branch, "--", l)
count := 0
if countOut != "" {
count = len(strings.Split(countOut, "\n"))
}
files = append(files, FileEntry{Path: l, CommitCount: count})
}
return files, cmd, nil
}
func ListLog(rp, branch string, limit int) ([]CommitEntry, string, error) {
args := []string{"log", "--pretty=format:%H\x1f%s\x1f%an\x1f%ad", "--date=short",
fmt.Sprintf("-%d", limit), branch}
out, err := gitAt(rp, args...)
cmd := gitCmdStr("log", fmt.Sprintf("-%d", limit), "--oneline", branch)
if err != nil {
return nil, cmd, err
}
return ParseCommits(out), cmd, nil
}
func ListRefs(rp string) ([]RefEntry, string, error) {
args := []string{"for-each-ref",
"--format=%(refname:short)\x1f%(objecttype)\x1f%(objectname:short)\x1f%(objectname)",
"refs/heads", "refs/tags"}
out, err := gitAt(rp, args...)
cmd := gitCmdStr("for-each-ref", "refs/heads", "refs/tags")
if err != nil {
return nil, cmd, err
}
var refs []RefEntry
for _, line := range strings.Split(out, "\n") {
line = strings.TrimSpace(line)
if line == "" {
continue
}
parts := strings.SplitN(line, "\x1f", 4)
if len(parts) < 4 {
continue
}
kind := "branch"
if parts[1] == "tag" {
kind = "tag"
}
refs = append(refs, RefEntry{Kind: kind, Name: parts[0], Short: parts[2], Hash: parts[3]})
}
return refs, cmd, nil
}
func FileHistory(rp, path, branch string) ([]CommitEntry, string, error) {
args := []string{"log", "--all", "--follow",
"--pretty=format:%H\x1f%s\x1f%an\x1f%ad", "--date=short", branch, "--", path}
out, err := gitAt(rp, args...)
cmd := gitCmdStr("log", "--all", "--follow", "--oneline", branch, "--", path)
if err != nil {
return nil, cmd, err
}
return ParseCommits(out), cmd, nil
}
func FileAtCommit(rp, hash, path string) (string, string, error) {
ref := fmt.Sprintf("%s:%s", hash, path)
args := []string{"show", ref}
out, err := gitAt(rp, args...)
return out, gitCmdStr(args...), err
}
func CommitMeta(rp, hash string) (string, string) {
meta, _ := gitAt(rp, "show", "--no-patch",
"--pretty=format:%s\x1f%an\x1f%ae\x1f%ad", "--date=format:%Y-%m-%d %H:%M", hash)
return meta, gitCmdStr("show", "--stat", hash)
}
func CommitFiles(rp, hash string) string {
out, _ := gitAt(rp, "diff-tree", "--no-commit-id", "-r", "--name-status", hash)
return out
}
func ParseCommits(out string) []CommitEntry {
var commits []CommitEntry
for _, line := range strings.Split(out, "\n") {
line = strings.TrimSpace(line)
if line == "" {
continue
}
parts := strings.SplitN(line, "\x1f", 4)
if len(parts) < 4 {
continue
}
short := parts[0]
if len(short) > 8 {
short = short[:8]
}
commits = append(commits, CommitEntry{
Hash: parts[0], Short: short,
Message: parts[1], Author: parts[2], Date: parts[3],
})
}
return commits
}
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