package testsupport

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

func ReadFile(t *testing.T, path string) []byte {
	t.Helper()
	data, err := os.ReadFile(path)
	if err != nil {
		t.Fatalf("failed to read file %q: %v", path, err)
	}
	return data
}

func OnlyRunDir(t *testing.T, workDir string) string {
	t.Helper()
	entries, err := os.ReadDir(workDir)
	if err != nil {
		t.Fatalf("failed to read work dir %q: %v", workDir, err)
	}
	dirs := make([]string, 0, len(entries))
	for _, e := range entries {
		if e.IsDir() {
			dirs = append(dirs, filepath.Join(workDir, e.Name()))
		}
	}
	if len(dirs) != 1 {
		t.Fatalf("expected exactly one run dir in %q, found %d", workDir, len(dirs))
	}
	return dirs[0]
}

func AssertNoSecretInFile(t *testing.T, path, secret string) {
	t.Helper()
	raw := string(ReadFile(t, path))
	if strings.Contains(raw, secret) {
		t.Fatalf("secret leaked in %s", path)
	}
}

func AssertNoSecretInTree(t *testing.T, root, secret string) {
	t.Helper()
	_ = filepath.WalkDir(root, func(path string, d os.DirEntry, err error) error {
		if err != nil || d == nil || d.IsDir() {
			return nil
		}
		raw, readErr := os.ReadFile(path)
		if readErr == nil && strings.Contains(string(raw), secret) {
			t.Fatalf("secret leaked in %s", path)
		}
		return nil
	})
}