using WebSocketSharp.Server;
using MySql.Data.MySqlClient;
using OMS.NET.Common;

namespace OMS.NET
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                GlobalArea.LoadServerConfig();//加载服务器配置 默认server.yaml
                GlobalArea.LoadRsaPkey();//加载rsa私钥 默认.pkey
                DbCheck();

                //开启ws监听
                var wssv = new WebSocketServer(Convert.ToInt16(GlobalArea.ServerConfig.ListenPort), false);
                //wssv.SslConfiguration.ServerCertificate = new X509Certificate2(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "server.pfx"));
                wssv.AddWebSocketService<MapServer>("/");
                wssv.Start();
                Console.WriteLine("已开启ws监听, 端口: " + GlobalArea.ServerConfig.ListenPort);
                Console.WriteLine("输入exit退出程序");

                bool loopFlag = true;
                while (loopFlag)
                {
                    string input = Console.ReadLine() ?? "";
                    switch (input.Trim())
                    {
                        case "exit":
                            loopFlag = false;
                            break;
                        case "logins":
                            Console.WriteLine("当前登录用户 " + GlobalArea.LoginUserCount);
                            break;
                        default:
                            break;
                    }
                }
                wssv.Stop();
            }
            catch (Exception e)
            {
                Log.Error(e.Message);
            }
        }

        /// <summary>
        /// 检查数据库，如果不满足预设条件则初始化
        /// </summary>
        static void DbCheck()
        {
            //.dblock存在，则默认数据库结构无问题
            string dblockPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @".dblock");
            string initsqlPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @"init.sql");
            if (!File.Exists(dblockPath))
            {
                using MySqlConnection connection = new(GlobalArea.ServerConfig.ConnectionString);
                connection.Open();
                Log.Info("dblock不存在，连接到数据库服务进行检查");
                //检查数据库是否存在，检查数据表是否
                // 检查数据库是否存在
                string dbName = GlobalArea.ServerConfig.DataBaseName;
                string checkDatabaseQuery = $"SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = '{dbName}'";
                MySqlCommand checkDatabaseCmd = new(checkDatabaseQuery, connection);
                object result = checkDatabaseCmd.ExecuteScalar();

                if (result == null)
                {
                    // 指定数据库不存在，选择创建数据库及相关表结构
                    string createDatabaseQuery = $"CREATE DATABASE {dbName} CHARACTER SET utf8mb4";
                    MySqlCommand createDatabaseCmd = new(createDatabaseQuery, connection);
                    createDatabaseCmd.ExecuteNonQuery();
                    Log.Info($"已创建数据库 {dbName}");
                }

                //创建默认数据表，实现通用逻辑，从init.sql读取创建相关表的sql语句,默认以分号结尾，忽略空行和换行
                //如果表已存在则sql应当不会执行任何操作，需要在sql添加 IF NOT EXISTS
                if (File.Exists(initsqlPath))
                {
                    string useDb = $"USE {dbName}";
                    MySqlCommand createDatabaseCmd = new(useDb, connection);
                    createDatabaseCmd.ExecuteNonQuery();
                    File.ReadAllText(initsqlPath)
                             .Split(new[] { ';' })
                             .Select(s => s.Trim())
                             .Where(s => !string.IsNullOrWhiteSpace(s))
                             .ToList().ForEach(sql =>
                             {
                                 MySqlCommand createDatabaseCmd = new(sql, connection);
                                 createDatabaseCmd.ExecuteNonQuery();
                                 Log.Info($"执行SQL成功 {sql}");
                             });
                }
                File.WriteAllText(dblockPath, "");
            }
            else
            {
                Log.Info("满足预设条件，跳过数据库检查");
            }
        }
    }
}