package config

import (
	"os"
	"path/filepath"
)

func GetStoryFilepath() string {
	return getFilepath("STORY_FILENAME", "data/story/story.json")
}

func GetDBFilepath() string {
	return getFilepath("DB_FILENAME", "data/db/store.db")
}

func getFilepath(env string, defaultFilepath string) string {
	filepath := selectFilepath(env, defaultFilepath)
	ensureDirExists(filepath)
	return filepath
}

func selectFilepath(env string, defaultFilepath string) string {
	filepath := os.Getenv(env)
	if filepath != "" {
		return filepath
	}
	return defaultFilepath
}

func ensureDirExists(filePath string) error {
	dir := filepath.Dir(filePath)
	if dir == "" || dir == "." || dir == "/" {
		return nil
	}
	return os.MkdirAll(dir, 0755)
}