using System;
using System.IO;
using Newtonsoft.Json;

namespace TfsExcelImporter
{
    /// <summary>
    /// 程序配置。保存于 exe 同目录 config.json，界面修改后自动写回。
    /// </summary>
    public class AppConfig
    {
        public string TfsUrl { get; set; } = "http://pdtfs01.dev.goldenstand.cn:8080/tfs/DefaultCollection";
        public string Project { get; set; } = "Tools_Dev";
        public string WorkItemType { get; set; } = "Task";

        // 目标迭代：完整迭代路径，如 Tools_Dev\2026年Sprint\2026年Sprint10
        public string IterationPath { get; set; } = "";
        // 可选：区域路径
        public string AreaPath { get; set; } = "";

        // ntlm | basic | default(当前 Windows 凭据)
        public string AuthMode { get; set; } = "ntlm";
        public string Username { get; set; } = "";
        public string Password { get; set; } = "";
        public string Domain { get; set; } = "";

        // 是否走 IE 系统代理。内网 TFS 请保持 false（直连）；
        // 代理/网关常对 HttpClient 请求返回 502（浏览器例外名单直连，.NET 不一定继承）
        public bool UseSystemProxy { get; set; } = false;

        public bool BypassRules { get; set; } = true;
        public bool SkipExistingTitles { get; set; } = true;
        public string DefaultState { get; set; } = "To Do";

        // 自定义字段引用名；留空则按 DisplayName 自动解析
        public string FinancialProjectRef { get; set; } = "";
        public string CompletedRef { get; set; } = "";
        public string LogDateRef { get; set; } = "";
        // Original Estimate 导入时取 Completed 的值；引用名留空则按显示名解析
        public string OriginalEstimateRef { get; set; } = "";

        public string LastExcelPath { get; set; } = "";

        // 父 Product Backlog Item：所有 Task 默认挂接的 PBI Id（如 219975）；Excel 每行 PBI Id 列可覆盖
        public string ParentPbiId { get; set; } = "";

        private static string ConfigPath
        {
            get { return Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "config.json"); }
        }

        public static AppConfig Load()
        {
            try
            {
                if (File.Exists(ConfigPath))
                {
                    var cfg = JsonConvert.DeserializeObject<AppConfig>(File.ReadAllText(ConfigPath));
                    if (cfg != null) return cfg;
                }
            }
            catch (Exception ex)
            {
                System.Diagnostics.Debug.WriteLine("读取 config.json 失败: " + ex.Message);
            }
            return new AppConfig();
        }

        public void Save()
        {
            try
            {
                File.WriteAllText(ConfigPath, JsonConvert.SerializeObject(this, Formatting.Indented));
            }
            catch (Exception ex)
            {
                System.Diagnostics.Debug.WriteLine("写入 config.json 失败: " + ex.Message);
            }
        }
    }
}