From 1433a72ee25e6b793ead7b75bf583759c9eb67d7 Mon Sep 17 00:00:00 2001
From: Rose Hogenson <rosehogenson@posteo.net>
Date: Mon, 24 Aug 2026 22:48:30 -0700
Subject: Fix hook and add self installer

---
 git-shell-commands.go | 72 ++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 69 insertions(+), 3 deletions(-)

diff --git a/git-shell-commands.go b/git-shell-commands.go
index f78f195..2311713 100644
--- a/git-shell-commands.go
+++ b/git-shell-commands.go
@@ -5,6 +5,7 @@ import (
 	"errors"
 	"flag"
 	"fmt"
+	"io"
 	"io/fs"
 	"os"
 	"os/exec"
@@ -39,9 +40,16 @@ func createRepo(name string) error {
 		return err
 	}
 	hook := filepath.Join(dir, "hooks/post-update")
-	hookSample := hook + ".sample"
-	fmt.Fprintf(os.Stderr, "mv %s %s\n", hookSample, hook)
-	if err := os.Rename(hookSample, hook); err != nil {
+	fmt.Fprintf(os.Stderr, "echo exec git update-server-info > %s && chmod +x %[1]s\n", hook)
+	f, err := os.OpenFile(hook, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0755)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	if _, err := io.WriteString(f, "exec git update-server-info\n"); err != nil {
+		return err
+	}
+	if err := f.Close(); err != nil {
 		return err
 	}
 	return nil
@@ -123,6 +131,62 @@ Delete the git repo named REPO.
 	return nil
 }
 
+func installFile(srcPath, dstPath string) error {
+	fmt.Fprintf(os.Stderr, "cp %s %s && chmod +x %[2]s\n", srcPath, dstPath)
+	src, err := os.Open(srcPath)
+	if err != nil {
+		return err
+	}
+	defer src.Close()
+	dst, err := os.OpenFile(dstPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0755)
+	if err != nil {
+		return err
+	}
+	defer dst.Close()
+	if _, err := io.Copy(dst, src); err != nil {
+		return err
+	}
+	if err := dst.Close(); err != nil {
+		return err
+	}
+	return nil
+}
+
+func install() error {
+	const dir = "/nezuko/code/git-shell-commands"
+	fmt.Fprintf(os.Stderr, "Install to %q? ", dir)
+	scanner := bufio.NewScanner(os.Stdin)
+	if !scanner.Scan() {
+		return fmt.Errorf("exiting")
+	}
+	response := strings.TrimSpace(scanner.Text())
+	if !(response == "" || strings.EqualFold(response, "y") || strings.EqualFold(response, "yes")) {
+		return fmt.Errorf("exiting")
+	}
+	selfPath := os.Args[0]
+	if !strings.Contains(selfPath, "/") {
+		var err error
+		if selfPath, err = exec.LookPath(selfPath); err != nil {
+			return err
+		}
+	}
+	helpPath := filepath.Join(dir, "help")
+	if err := installFile(selfPath, helpPath); err != nil {
+		return err
+	}
+	for _, cmd := range []string{"create", "delete"} {
+		cmdPath := filepath.Join(dir, cmd)
+		fmt.Fprintf(os.Stderr, "ln -f %s %s\n", helpPath, cmdPath)
+		if err := os.Remove(cmdPath); err != nil && !errors.Is(err, os.ErrNotExist) {
+			return err
+		}
+		if err := os.Link(helpPath, cmdPath); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 func help() {
 	fmt.Printf(`Available commands:
 	create	create a new git repo
@@ -138,6 +202,8 @@ func main() {
 		err = create()
 	case "delete":
 		err = delete()
+	case "git-shell-commands":
+		err = install()
 	default:
 		help()
 	}
-- 
cgit v1.3.1