package recipe

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

// ListRecipes returns a list of recipe names in the given directory.
// It looks for .md files that contain recipe frontmatter.
func ListRecipes(dir string) ([]string, error) {
	if dir == "" {
		dir = "."
	}

	var recipes []string

	err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
		if err != nil {
			return err
		}

		if info.IsDir() {
			// Skip hidden directories and common ignore dirs
			name := info.Name()
			if strings.HasPrefix(name, ".") && name != "." || name == "node_modules" || name == "vendor" {
				return filepath.SkipDir
			}
			return nil
		}

		if strings.HasSuffix(strings.ToLower(info.Name()), ".md") {
			// Simple check for recipe files (contains "Objective:" or "Instructions:")
			data, err := os.ReadFile(path)
			if err == nil && (strings.Contains(string(data), "**Objective:**") || strings.Contains(string(data), "Objective:")) {
				name := strings.TrimSuffix(info.Name(), ".md")
				recipes = append(recipes, name)
			}
		}

		return nil
	})

	return recipes, err
}