package common

import (
	"os"
	"path/filepath"
	"strings"
	"testing"
)

func TestEnsureHookTemplatePassesTypeAndRepo(t *testing.T) {
	root := t.TempDir()
	dir, err := EnsureHookTemplate(root)
	if err != nil {
		t.Fatal(err)
	}
	body, err := os.ReadFile(filepath.Join(dir, "hooks", "post-receive"))
	if err != nil {
		t.Fatal(err)
	}
	text := string(body)
	for _, want := range []string{`post-receive "$repo" "$@"`, `repo=${repo_dir#"$SIMPLEGIT_REPO_ROOT"/}`, `repo=${repo%.git}`} {
		if !strings.Contains(text, want) {
			t.Errorf("generated hook missing %q:\n%s", want, text)
		}
	}
}

func TestEnsureHookTemplateRefreshesExistingRepos(t *testing.T) {
	root := t.TempDir()
	hook := filepath.Join(root, "repos", "alice", "demo.git", "hooks", "post-receive")
	if err := os.MkdirAll(filepath.Dir(hook), 0o755); err != nil {
		t.Fatal(err)
	}
	if err := os.WriteFile(hook, []byte("old"), 0o755); err != nil {
		t.Fatal(err)
	}
	if _, err := EnsureHookTemplate(root); err != nil {
		t.Fatal(err)
	}
	body, err := os.ReadFile(hook)
	if err != nil {
		t.Fatal(err)
	}
	if !strings.Contains(string(body), `post-receive "$repo"`) {
		t.Fatalf("existing hook was not refreshed: %s", body)
	}
}