using System;
using System.Collections.Generic;
using System.Linq;
using Shared.SimpleControl;

namespace Shared
{
	[System.Serializable]
	public class CommonConfig
    {
		public static readonly string ConfigFile = "CommonConfig";

        /// <summary>
        /// 锁定事件
        /// </summary>
        static readonly int LOCK_TIME = 5;

        /// <summary>
        /// 锁定账号列表
        /// </summary>
        public List<LockAccount> lockList = new List<LockAccount> ();

        /// <summary>
        /// 接口类的返回信息
        /// </summary>
        static CommonConfig m_Current = null;

		/// <summary>
		/// 接口类的返回信息
		/// </summary>
		public static CommonConfig Current
		{
			get
			{
				if (m_Current == null)
				{
					try
					{
						var APIInfoConfigBytes = IO.FileUtils.ReadFile(ConfigFile);
						var APIInfoConfigString = CommonPage.MyEncodingUTF8.GetString(APIInfoConfigBytes);
                        CommonConfig temp = null;
						if (APIInfoConfigString != null)
						{
							temp = Newtonsoft.Json.JsonConvert.DeserializeObject<CommonConfig> (APIInfoConfigString);
						}
						if (temp == null)
						{
							m_Current = new CommonConfig { };
						}
						else
						{
							m_Current = temp;
						}
					}
					catch
					{
						m_Current = new CommonConfig { };
					}
				}
				return m_Current;
			}
		}

		byte[] GetAPIInfoConfigBytes()
		{
			return CommonPage.MyEncodingUTF8.GetBytes(Newtonsoft.Json.JsonConvert.SerializeObject(this));
		}

		//public void Refresh()
		//{
		//	m_Current = null;
		//	Save();
		//}

		public void Save()
		{
			IO.FileUtils.WriteFileByBytes(ConfigFile, GetAPIInfoConfigBytes());
		}


        #region 密码锁定操作方法
        /// <summary>
        /// 判断当前账号是否锁定
        /// </summary>
        /// <param name="account"></param>
        public bool CheckIfLock (string account)
        {
            var lockAccount = lockList.Where (obj => obj.Account == account).FirstOrDefault ();
            //var lockAccount =lockList.Find ((obj) => obj.Account == account);
            if (lockAccount == null) {
                LockAccount lockAccountNew = new LockAccount () { Account = account, errorCount = 0, lockTime = DateTime.MinValue, ifLock = false };
                lockList.Add (lockAccountNew);
                return false;
            } else {

                //判断是否小于5分钟
                if (lockAccount.lockTime.AddMinutes (LOCK_TIME) > DateTime.Now) {
                    //是，判断是否锁定
                    if (lockAccount.ifLock) {
                        int unlocktime = LOCK_TIME - (DateTime.Now.Minute - lockAccount.lockTime.Minute);
                        new Alert ("", $"The current login account has been locked. Please try again in {unlocktime} minutes.", Language.StringByID (SimpleControl.R.MyInternationalizationString.Close)).Show ();
                        return true;
                    } else {
                        return false;
                    }

                } else {
                    //否，解锁，重置参数
                    lockAccount.errorCount = 0;
                    lockAccount.lockTime = DateTime.Now;
                    lockAccount.ifLock = false;
                    Save ();
                    return false;
                }
            }
        }

        /// <summary>
        /// 错误锁定
        /// </summary>
        /// <param name="account"></param>
        public bool ErrorLockListUpdate (string account)
        {
            var lockAccount = lockList.Where (obj => obj.Account == account).FirstOrDefault ();
            if (lockAccount == null) {
                LockAccount lockAccountNew = new LockAccount () { Account = account, errorCount = 1, lockTime = DateTime.MinValue, ifLock = false };
                lockList.Add (lockAccountNew);
            } else {
                if (lockAccount.errorCount < 5) {
                    //错误次数少于5，提示密码错误并且错误次数加一
                    int count = lockAccount.errorCount + 1;
                    lockAccount.errorCount = count;
                    //lockAccount.lockTime = DateTime.Now;
                    lockAccount.ifLock = false;
                    Save ();
                } else {
                    //错误次数大于5，设备修改成锁定，设置锁定时间，重置错误次数
                    lockAccount.errorCount = 0;
                    lockAccount.lockTime = DateTime.Now;
                    lockAccount.ifLock = true;
                    Save ();
                    MainPage.ShowAlertOnMainThread ($"The current login account has been locked. Please try again in {LOCK_TIME} minutes.");
                    return true;
                }
            }

            return false;
        }
        #endregion

    }


    /// <summary>
    /// 锁定的账号信息
    /// </summary>
    ///  [Serializable]
    [Serializable]
    public class LockAccount
    {
        /// <summary>
        /// 账号
        /// </summary>
        public string Account { get; set; }
        /// <summary>
        /// 锁定次数
        /// </summary>
        public int errorCount { get; set; }
        /// <summary>
        /// 锁定时间
        /// </summary>
        public DateTime lockTime { get; set; }
        /// <summary>
        /// ifLock
        /// </summary>
        public bool ifLock { get; set; }

    }

}