1package backend
 2
 3import (
 4	"path/filepath"
 5
 6	"github.com/charmbracelet/soft-serve/git"
 7	"github.com/gobwas/glob"
 8)
 9
10// LatestFile returns the contents of the latest file at the specified path in
11// the repository and its file path.
12func LatestFile(r Repository, pattern string) (string, string, error) {
13	g := glob.MustCompile(pattern)
14	dir := filepath.Dir(pattern)
15	repo, err := r.Open()
16	if err != nil {
17		return "", "", err
18	}
19	head, err := repo.HEAD()
20	if err != nil {
21		return "", "", err
22	}
23	t, err := repo.TreePath(head, dir)
24	if err != nil {
25		return "", "", err
26	}
27	ents, err := t.Entries()
28	if err != nil {
29		return "", "", err
30	}
31	for _, e := range ents {
32		fp := filepath.Join(dir, e.Name())
33		if e.IsTree() {
34			continue
35		}
36		if g.Match(fp) {
37			bts, err := e.Contents()
38			if err != nil {
39				return "", "", err
40			}
41			return string(bts), fp, nil
42		}
43	}
44	return "", "", git.ErrFileNotFound
45}
46
47// Readme returns the repository's README.
48func Readme(r Repository) (readme string, path string, err error) {
49	readme, path, err = LatestFile(r, "README*")
50	return
51}