using System.IO;

namespace IStation.DAL
{
    /// <summary>
    /// 文件辅助类
    /// </summary>
    public class FileHelper
    {
        private const string _extension = ".txt";//文件扩展名

        /// <summary>
        /// 查询数据文件夹路径
        /// </summary>
        public static string GetDataPath()
        {
            var path = Path.Combine(LocalFileConfig.RootDirectory, "Data");
            if (!Directory.Exists(path))
                Directory.CreateDirectory(path);
            return path;
        }

        /// <summary>
        /// 查询工作文件夹路径
        /// </summary>
        public static string GetWorkPath()
        {
            var dataPath = GetDataPath();
            var workPath = Path.Combine(dataPath, LocalFileConfig.WorkFolder);
            if (!Directory.Exists(workPath))
                Directory.CreateDirectory(workPath);
            return workPath;
        }

        /// <summary>
        /// 查询版本文件夹路径
        /// </summary>
        public static string GetVersionsPath()
        {
            var workPath = GetWorkPath();
            var projectPath = Path.Combine(workPath, LocalFileConfig.Versions);
            if (!Directory.Exists(projectPath))
                Directory.CreateDirectory(projectPath);
            return projectPath;
        }


        /// <summary>
        /// 查询文件路径
        /// </summary>
        public static string GetFilePath<T>(string folderPath) where T : class
        {
            if (!Directory.Exists(folderPath))
                Directory.CreateDirectory(folderPath);
            var objType = typeof(T);
            var fileName = Path.Combine(folderPath, objType.Name + _extension);
            return fileName;
        }

        /// <summary>
        /// 保存对象到文件中
        /// </summary>
        public static void SaveObjectFile<T>(string fileName, T t) where T : class
        {
            var str = JsonHelper.Object2FormatJson(t);
            File.WriteAllText(fileName, str);
        }

        /// <summary>
        /// 查询文件对象
        /// </summary>
        public static T GetFileObject<T>(string fileName) where T : class
        {
            if (!File.Exists(fileName))
                return default;
            var str = File.ReadAllText(fileName);
            if (string.IsNullOrEmpty(str))
                return default;
            return JsonHelper.Json2Object<T>(str);
        }


        /// <summary>
        /// 查询ID
        /// </summary> 
        public static long NextId()
        {
            return SnowflakeIdHelper.NextId();
        }

    }
}