using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace videoGather
{
    public static class ConfigHelper
    {

        private static readonly string ConfigFolder =
            Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Config");

        /// <summary>
        /// 保存配置到指定名称的配置文件
        /// </summary>
        /// <typeparam name="T">配置数据类型</typeparam>
        /// <param name="configName">配置文件名（无需扩展名）</param>
        /// <param name="data">配置数据</param>
        public static void Save<T>(string configName, T data)
        {
            if (!Directory.Exists(ConfigFolder))
            {
                Directory.CreateDirectory(ConfigFolder);
            }

            var filePath = GetConfigPath(configName);
            var json = JsonConvert.SerializeObject(data, Formatting.Indented);
            File.WriteAllText(filePath, json);
        }

        /// <summary>
        /// 读取指定配置文件的配置数据
        /// </summary>
        /// <typeparam name="T">配置数据类型</typeparam>
        /// <param name="configName">配置文件名（无需扩展名）</param>
        /// <param name="defaultValue">当配置不存在时的默认值</param>
        public static T Load<T>(string configName, T defaultValue = default)
        {
            var filePath = GetConfigPath(configName);

            if (!File.Exists(filePath))
            {
                return defaultValue;
            }

            try
            {
                var json = File.ReadAllText(filePath);
                return JsonConvert.DeserializeObject<T>(json);
            }
            catch
            {
                return defaultValue;
            }
        }

        private static string GetConfigPath(string configName)
        {
            return Path.Combine(ConfigFolder, $"{configName}.config.json");
        }
    }
}