using SqlSugar;
using System;
using System.Data.SQLite;
using System.Linq;


namespace IStation.DAL
{
    public class BasicDb
    {
        /// <summary>
        /// 初始数据库
        /// </summary>
        /// <param name="projectId"></param>
        /// <param name="backup"></param>
        /// <param name="stringDefaultLength"></param>
        /// <returns></returns>
        public static bool InitTables(long projectId, bool backup = false, int stringDefaultLength = 250)
        {
            var db = GetDb(projectId);
            if (db == null)
                return false;

            Type[] types = new Type[] {
                       typeof(Entity.SignalType),
                       typeof(Entity.SignalTypeGroup),
                       typeof(Entity.ElecPrice),

                       typeof(Entity.Station),

                       typeof(Entity.Equipment),
                       typeof(Entity.EquipmentGroup),
                       typeof(Entity.EquipmentMonitorMapping),

                       typeof(Entity.PumpCurve),
                       typeof(Entity.PumpCurveMapping),
                       typeof(Entity.PumpSpeedCurve),

                       typeof(Entity.MonitorPoint),
                       typeof(Entity.MonitorPointGroup),
                       typeof(Entity.Signal),

                   };

            //Db.CodeFirst.SetStringDefaultLength(StringDefaultLength); 
            db.DbMaintenance.CreateDatabase();
            if (backup)
            {
                db.CodeFirst.BackupTable().InitTables(types);
            }
            else
            {
                db.CodeFirst.InitTables(types);
            }
            return true;
        }

        private static SqlSugarClient GetDb(long projectId)
        {
            if (projectId < 1)
                return default;
            var dbName = Settings.File.BasicDB;
            var filePath = $"{FileHelper.GetProjectFolder(projectId)}\\{dbName}";
            if (!System.IO.File.Exists(filePath))
            {
                try
                {
                    SQLiteConnection.CreateFile(filePath);
                }
                catch (Exception ex)
                {
                    var errMsg = $"{dbName}文件不存在!Path:{filePath}\r\n{ex.Message}";
                    //LogHelper.Debug(errMsg);
                    throw new Exception(errMsg);
                }
            }

            var config = new ConnectionConfig();
            config.ConnectionString = $"DataSource={filePath}";
            config.IsAutoCloseConnection = true;
            config.DbType = SqlSugar.DbType.Sqlite;
            config.ConfigureExternalServices = new ConfigureExternalServices()
            {
                EntityService = (property, column) =>
                {
                    //除主键外都可空
                    if (!column.IsPrimarykey)
                    {
                        column.IsNullable = true;
                    }
                }
            };

            var db = new SqlSugarClient(config);
            db.Aop.OnLogExecuting = (sql, pars) =>
            {
                Console.WriteLine(sql + "\r\n" + db.Utilities.SerializeObject
                    (pars.ToDictionary(it => it.ParameterName, it => it.Value)));
                Console.WriteLine();
            };

            return db;
        }

    }

}