using System.Collections;
using Milimoe.FunGame.Core.Api.Transmittal;
using Milimoe.FunGame.Core.Api.Utility;
using Milimoe.FunGame.Core.Library.Common.Network;
using Milimoe.FunGame.Core.Library.Constant;
using Milimoe.FunGame.Core.Library.SQLScript.Common;
using Milimoe.FunGame.Core.Library.SQLScript.Entity;
using Milimoe.FunGame.Server.Model;
using Milimoe.FunGame.Server.Others;
using Milimoe.FunGame.Server.Utility;

namespace Milimoe.FunGame.Server.Controller
{
    public class DataRequestController
    {
        public ServerModel Server { get; }
        public MySQLHelper SQLHelper => Server.SQLHelper;
        public MailSender? MailSender => Server.MailSender;

        private string ForgetVerify = "";

        public DataRequestController(ServerModel server)
        {
            Server = server;
        }

        public Hashtable GetResultData(DataRequestType type, Hashtable data)
        {
            Hashtable result = new();

            switch (type)
            {
                case DataRequestType.UnKnown:
                    break;

                case DataRequestType.Login_GetFindPasswordVerifyCode:
                    ForgetPassword(data, result);
                    break;

                case DataRequestType.Login_UpdatePassword:
                    UpdatePassword(data, result);
                    break;
            }

            return result;
        }

        /// <summary>
        /// 接收并验证找回密码时的验证码
        /// </summary>
        /// <param name="RequestData"></param>
        /// <param name="ResultData"></param>
        public void ForgetPassword(Hashtable RequestData, Hashtable ResultData)
        {
            string msg = "无法找回您的密码，请稍后再试。"; // 返回的验证信息
            if (RequestData.Count >= 2)
            {
                ServerHelper.WriteLine("[" + ServerSocket.GetTypeString(SocketMessageType.DataRequest) + "] " + Server.GetClientName() + " -> ForgetPassword");
                string username = DataRequest.GetHashtableJsonObject<string>(RequestData, ForgetVerifyCodes.Column_Username) ?? "";
                string email = DataRequest.GetHashtableJsonObject<string>(RequestData, ForgetVerifyCodes.Column_Email) ?? "";
                string verifycode = DataRequest.GetHashtableJsonObject<string>(RequestData, ForgetVerifyCodes.Column_ForgetVerifyCode) ?? "";

                // 客户端发来了验证码就进行验证，没有发就生成
                if (verifycode.Trim() != "")
                {
                    // 先检查验证码
                    SQLHelper.ExecuteDataSet(ForgetVerifyCodes.Select_ForgetVerifyCode(username, email, verifycode));
                    if (SQLHelper.Result == SQLResult.Success)
                    {
                        // 检查验证码是否过期
                        DateTime SendTime = (DateTime)SQLHelper.DataSet.Tables[0].Rows[0][ForgetVerifyCodes.Column_SendTime];
                        if ((DateTime.Now - SendTime).TotalMinutes >= 10)
                        {
                            ServerHelper.WriteLine(Server.GetClientName() + " 验证码已过期");
                            msg = "此验证码已过期，请重新找回密码。";
                            SQLHelper.Execute(ForgetVerifyCodes.Delete_ForgetVerifyCode(username, email));
                        }
                        else
                        {
                            // 检查验证码是否正确
                            if (ForgetVerify.Equals(SQLHelper.DataSet.Tables[0].Rows[0][ForgetVerifyCodes.Column_ForgetVerifyCode]))
                            {
                                ServerHelper.WriteLine("[ForgerPassword] UserName: " + username + " Email: " + email);
                                SQLHelper.Execute(ForgetVerifyCodes.Delete_ForgetVerifyCode(username, email));
                                msg = "";
                            }
                            else msg = "验证码不正确，请重新输入！";
                        }
                    }
                    else msg = "验证码不正确，请重新输入！";
                }
                else
                {
                    // 检查账号和邮箱是否匹配
                    SQLHelper.ExecuteDataSet(UserQuery.Select_CheckEmailWithUsername(username, email));
                    if (SQLHelper.Result != SQLResult.Success)
                    {
                        msg = "此邮箱未绑定此账号，请重试！";
                    }
                    else
                    {
                        // 检查验证码是否发送过和是否过期
                        SQLHelper.ExecuteDataSet(ForgetVerifyCodes.Select_HasSentForgetVerifyCode(username, email));
                        if (SQLHelper.Result != SQLResult.Success || (DateTime.Now - ((DateTime)SQLHelper.DataSet.Tables[0].Rows[0][ForgetVerifyCodes.Column_SendTime])).TotalMinutes >= 10)
                        {
                            // 发送验证码，需要先删除之前过期的验证码
                            SQLHelper.Execute(ForgetVerifyCodes.Delete_ForgetVerifyCode(username, email));
                            ForgetVerify = Verification.CreateVerifyCode(VerifyCodeType.NumberVerifyCode, 6);
                            SQLHelper.Execute(ForgetVerifyCodes.Insert_ForgetVerifyCode(username, email, ForgetVerify));
                            if (SQLHelper.Result == SQLResult.Success)
                            {
                                if (MailSender != null)
                                {
                                    // 发送验证码
                                    string ServerName = Config.ServerName;
                                    string Subject = $"[{ServerName}] FunGame 找回密码验证码";
                                    string Body = $"亲爱的 {username}， <br/>    您正在找回[{ServerName}]账号的密码，您的验证码是 {ForgetVerify} ，10分钟内有效，请及时输入！<br/><br/>{ServerName}<br/>{DateTimeUtility.GetDateTimeToString(TimeType.DateOnly)}";
                                    string[] To = new string[] { email };
                                    if (MailSender.Send(MailSender.CreateMail(Subject, Body, System.Net.Mail.MailPriority.Normal, true, To)) == MailSendResult.Success)
                                    {
                                        ServerHelper.WriteLine(Server.GetClientName() + $" 已向{email}发送验证码：{ForgetVerify}");
                                        msg = "";
                                    }
                                    else
                                    {
                                        ServerHelper.WriteLine(Server.GetClientName() + " 无法发送验证码");
                                        ServerHelper.WriteLine(MailSender.ErrorMsg);
                                    }
                                }
                                else // 不使用MailSender的情况
                                {
                                    ServerHelper.WriteLine(Server.GetClientName() + $" 验证码为：{ForgetVerify}，请服务器管理员告知此用户");
                                    msg = "";
                                }
                            }
                        }
                        else
                        {
                            // 发送过验证码且验证码没有过期
                            string ForgetVerifyCode = (string)SQLHelper.DataSet.Tables[0].Rows[0][ForgetVerifyCodes.Column_ForgetVerifyCode];
                            ServerHelper.WriteLine(Server.GetClientName() + $" 十分钟内已向{email}发送过验证码：{ForgetVerifyCode}");
                            msg = "";
                        }
                    }
                }
            }
            ResultData.Add("msg", msg);
        }

        /// <summary>
        /// 更新用户的密码
        /// </summary>
        /// <param name="RequestData"></param>
        /// <param name="ResultData"></param>
        private void UpdatePassword(Hashtable RequestData, Hashtable ResultData)
        {
            string msg = "无法更新您的密码，请稍后再试。";
            if (RequestData.Count >= 2)
            {
                ServerHelper.WriteLine("[" + ServerSocket.GetTypeString(SocketMessageType.DataRequest) + "] " + Server.GetClientName() + " -> UpdatePassword");
                string username = DataRequest.GetHashtableJsonObject<string>(RequestData, UserQuery.Column_Username) ?? "";
                string password = DataRequest.GetHashtableJsonObject<string>(RequestData, UserQuery.Column_Password) ?? "";
                if (username.Trim() != "" && password.Trim() != "")
                {
                    Server.SQLHelper.Execute(UserQuery.Update_Password(username, password));
                    if (SQLHelper.Success)
                    {
                        // 更新成功返回空值
                        msg = "";
                    }
                }
            }
            ResultData.Add("msg", msg);
        }
    }
}