using NetCore.Common;
using NetCore.Model.enums;
using System;
using System.Collections.Generic;
using System.Data;

namespace NetCore.BLL
{
    public class Connection
    {
        public DatabaseType databaseType { get; set; }
        public string connectionString { get; set; }
    }
    public class ConnectionFactory
    {
        /// <summary>
        /// 转换数据库类型
        /// </summary>
        /// <param name="databaseType">数据库类型</param>
        /// <returns></returns>
        private static DatabaseType GetDataBaseType(string databaseType)
        {
            DatabaseType returnValue = DatabaseType.SqlServer;
            foreach (DatabaseType dbType in Enum.GetValues(typeof(DatabaseType)))
            {
                if (dbType.ToString().Equals(databaseType, StringComparison.OrdinalIgnoreCase))
                {
                    returnValue = dbType;
                    break;
                }
            }
            return returnValue;
        }
        //private static string _type { get; set; }
        //private static string _connstr { get; set; }
        protected static Dictionary<ContextType, Connection> _mydic { get; set; }

        protected static Connection qwConnect = null;//数据源
        protected static Connection crmConnect = null;//数据源
        protected static Connection wxConnect = null;//数据源
        protected static Connection qwConnect_targt = null;//目标数据库
        protected static Connection crmConnect_targt = null;//目标数据库
        protected static Connection wxConnect_targt = null;//目标数据库
        private static Connection GetConnStr(ContextType contextType, string comcode, bool istargt)
        {
            switch (contextType)
            {
                case ContextType.crmContext:
                    if (crmConnect == null || string.IsNullOrEmpty(crmConnect.connectionString))
                    {
                        crmConnect = GetRealtimeStr(contextType, comcode, false);
                    }
                    if (crmConnect_targt == null || string.IsNullOrEmpty(crmConnect_targt.connectionString))
                    {
                        crmConnect_targt = GetRealtimeStr(contextType, comcode, true);
                    }
                    return istargt ? crmConnect_targt : crmConnect;

                case ContextType.qwContext:
                    if (qwConnect == null || string.IsNullOrEmpty(qwConnect.connectionString))
                    {
                        qwConnect = GetRealtimeStr(contextType, comcode, false);
                    }
                    if (qwConnect_targt == null || string.IsNullOrEmpty(qwConnect_targt.connectionString))
                    {
                        qwConnect_targt = GetRealtimeStr(contextType, comcode, true);
                    }
                    return istargt ? qwConnect_targt : qwConnect;
                case ContextType.wxContext:
                    if (wxConnect == null || string.IsNullOrEmpty(wxConnect.connectionString))
                    {
                        wxConnect = GetRealtimeStr(contextType, comcode, false);
                    }
                    if (wxConnect_targt == null || string.IsNullOrEmpty(wxConnect_targt.connectionString))
                    {
                        wxConnect_targt = GetRealtimeStr(contextType, comcode, true);
                    }
                    return istargt ? wxConnect_targt : wxConnect;
                default:
                    return qwConnect;
            }
        }
        private static Connection GetRealtimeStr(ContextType contextType, string comcode, bool istargt)
        {
            return new Connection()
            {
                connectionString = ConfigHelper.GetSectionValue($"{comcode}_Config:{contextType.ToString()}:{(istargt ? "targtConectStr" : "connectionString")}"),//从配置中获取配置
                databaseType = GetDataBaseType(ConfigHelper.GetSectionValue($"{comcode}_Config:{contextType.ToString()}:databaseType")),//从配置中获取配置
            };
        }
        /// <summary>
        /// 获取数据库连接
        /// </summary>
        /// <param name="datatype">SqlServer,MySql,Oracle 如果不传递指定数据库，则按照配置的来</param>
        /// <param name="comcode">事业部的编码</param>
        /// <param name="istargt">true:目标库 flase：数据源库</param>
        /// <returns></returns>
        public static IDbConnection CreateConnection(ContextType contextType, string comcode, bool istargt = true)
        {
            IDbConnection connection = null;
            Connection database = GetConnStr(contextType, comcode, istargt);
            switch (database.databaseType)
            {
                case DatabaseType.SqlServer:
                    connection = new System.Data.SqlClient.SqlConnection(database.connectionString);
                    break;
                case DatabaseType.MySql:
                    connection = new MySql.Data.MySqlClient.MySqlConnection(database.connectionString);
                    break;
                case DatabaseType.Oracle:
                    connection = new Oracle.ManagedDataAccess.Client.OracleConnection(database.connectionString);
                    break;
            }
            return connection;
        }

        public static IDbConnection CreatePushConnection()
        {
            IDbConnection connection = null;
            string connectionstr = ConfigHelper.GetSectionValue($"PushConfig:connectionString");
            string contype = ConfigHelper.GetSectionValue($"PushConfig:databaseType");
            DatabaseType databaseType = GetDataBaseType(contype);
            switch (databaseType)
            {
                case DatabaseType.SqlServer:
                    connection = new System.Data.SqlClient.SqlConnection(connectionstr);
                    break;
                case DatabaseType.MySql:
                    connection = new MySql.Data.MySqlClient.MySqlConnection(connectionstr);
                    break;
                case DatabaseType.Oracle:
                    connection = new Oracle.ManagedDataAccess.Client.OracleConnection(connectionstr);
                    break;
            }
            return connection;
        }
    }
}