using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web.Script.Serialization;

namespace DRG.DRGInterfaceClient
{
    /// <summary>医疗机构信息项（来自 01010064）。</summary>
    public class HospitalInfoItem
    {
        public string id { get; set; }
        public string hospCode { get; set; }
        /// <summary>医保机构编码（OrganizationCode），用于 session.hospYBCode 与 --sync 匹配。</summary>
        public string code { get; set; }
        public string descripts { get; set; }
        public string MedinsLv { get; set; }

        internal static object Parse(Dictionary<string, object> d)
        {
            throw new NotImplementedException();
        }
    }

    /// <summary>同步配置（来自 02010079）。</summary>
    public class SyncConfig
    {
        public string syncType { get; set; }
        public string frequency { get; set; }
        public string scheduledTime { get; set; }
        public int lookbackDays { get; set; }
        public bool enabled { get; set; }
        public string synFlag { get; set; }
        public string warningFlag { get; set; }
        public string status { get; set; }
        public string errorMessage { get; set; }

        internal static SyncConfig Parse(object p)
        {
            throw new NotImplementedException();
        }
    }

    /// <summary>session 中非机构字段的默认值（来自 appsettings.json）。</summary>
    public class SessionDefaults
    {
        public string userID { get; set; }
        public string userCode { get; set; }
        public string userName { get; set; }
        public string locID { get; set; }
        public string locDesc { get; set; }
        public string groupID { get; set; }
        public string groupDesc { get; set; }
        public string sessionID { get; set; }
        public string userYBCode { get; set; }
        public string provID { get; set; }
        public string cityID { get; set; }
        public string areaCode { get; set; }
        public string path { get; set; }
        public int langID { get; set; }
        public string langDesc { get; set; }
        public string changeFlag { get; set; }
        public string changeDesc { get; set; }
        public string lastLoginDate { get; set; }
        public string lastLoginTime { get; set; }
        public string directorAuth { get; set; }
        public string defaultMenuType { get; set; }
        public string titleDesc { get; set; }
        public string errorMessageTime { get; set; }
        public string language { get; set; }
        public int messageTime { get; set; }
    }

    public class AppConfig
    {
        public string Endpoint { get; set; }
        public string AuthToken { get; set; }
        /// <summary>已勾选/定时要同步的医疗机构 code（医保编码）列表，支持多机构。</summary>
        public List<string> ScheduledHospCodes { get; set; }
        /// <summary>已废弃：旧版单机构定时字段，仅用于加载旧配置时迁移到 ScheduledHospCodes。</summary>
        public string ScheduledHospCode { get; set; }
        public string TaskName { get; set; }
        public int MaxLogSizeMB { get; set; }
        public int FullSyncStartDays { get; set; }
        public SessionDefaults SessionDefaults { get; set; }
    }

    /// <summary>appsettings.json 加载与运行时单例。</summary>
    public static class Config
    {
        private static AppConfig _current;
        private static readonly string ConfigPath =
            Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "appsettings.json");

        public static AppConfig Current
        {
            get { if (_current == null) _current = Load(); return _current; }
        }

        public static AppConfig Load()
        {
            // 先置默认，避免加载异常时 Logger -> Config.Current 产生重入递归
            if (_current == null) _current = Default();
            try
            {
                if (File.Exists(ConfigPath))
                {
                    string json = File.ReadAllText(ConfigPath);
                    var cfg = new JavaScriptSerializer().Deserialize<AppConfig>(json);
                    if (cfg != null)
                    {
                        if (cfg.SessionDefaults == null) cfg.SessionDefaults = new SessionDefaults();
                        if (cfg.ScheduledHospCodes == null) cfg.ScheduledHospCodes = new List<string>();
                        // 旧版单机构配置迁移：把 ScheduledHospCode 并入 ScheduledHospCodes
                        if (!string.IsNullOrWhiteSpace(cfg.ScheduledHospCode)
                            && !cfg.ScheduledHospCodes.Contains(cfg.ScheduledHospCode, StringComparer.OrdinalIgnoreCase))
                            cfg.ScheduledHospCodes.Add(cfg.ScheduledHospCode);
                        _current = cfg;
                    }
                }
            }
            catch (Exception ex)
            {
                Logger.Error("加载 appsettings.json 失败，使用默认值", ex);
            }
            return _current;
        }

        public static AppConfig Default()
        {
            return new AppConfig
            {
                Endpoint = "http://127.0.0.1:52773/csp/drg/sysInternalMutiple",
                AuthToken = "X1NZU1RFTTpwcnlrQDIwMjA=",
                ScheduledHospCodes = new List<string>(),
                TaskName = "DRGInterfaceClientSync",
                MaxLogSizeMB = 5,
                FullSyncStartDays = 365,
                SessionDefaults = new SessionDefaults
                {
                    userID = "158",
                    userCode = "admin",
                    userName = "admin",
                    locID = "1",
                    locDesc = "DRG平台",
                    groupID = "1",
                    groupDesc = "管理员",
                    sessionID = "",
                    userYBCode = "",
                    provID = "12",
                    cityID = "98",
                    areaCode = "340100",
                    path = "",
                    langID = 1,
                    langDesc = "简体中文",
                    changeFlag = "N",
                    changeDesc = "",
                    lastLoginDate = "",
                    lastLoginTime = "",
                    directorAuth = "N",
                    defaultMenuType = "",
                    titleDesc = "",
                    errorMessageTime = "",
                    language = "CN",
                    messageTime = 1
                }
            };
        }

        public static void Save()
        {
            try
            {
                var json = new JavaScriptSerializer().Serialize(_current);
                File.WriteAllText(ConfigPath, json);
            }
            catch (Exception ex)
            {
                Logger.Error("保存 appsettings.json 失败", ex);
            }
        }
    }
}