using System.Threading.Tasks;
using System.Xml.Linq;

namespace IStation.DAL
{
    /// <summary>
    ///   
    /// </summary>
    public class ScheduleCombine
    {
        public SqlSugarClient Connection
        {
            get { return ConfigHelper.GetSqlSugarClient(); }
        }

        private readonly string _tableNamePrefix = "ScheduleCombine_Cb_";

        private string GetTableName(string runFlag)
        {
            return $"{_tableNamePrefix}{runFlag}";
        }

        /// <summary>
        /// 获取全部表名
        /// </summary>
        public List<string> GetAllTableName()
        {
            var tables = new List<string>();
            using (var connection = new SQLiteConnection(ConfigHelper.ConnectionString))
            {
                connection.Open();
                var sql = $"select name from sqlite_master where type='table' and name like '%{_tableNamePrefix}%';";
                using (var command = new SQLiteCommand(sql, connection))
                {
                    using (var reader = command.ExecuteReader())
                    {
                        while (reader.Read())
                        {
                            var tableName = reader["name"].ToString();
                            tables.Add(tableName);
                        }
                    }
                }
            }
            return tables;
        }


        /// <summary>
        /// 通过表名获取所有未分析组合
        /// </summary>
        public List<Entity.ScheduleCombine> GetAllUnanalyzedAnaByTableName(string tableName)
        {
            using (SqlSugarClient db = Connection)
            {
                var sql = $"select * from {tableName} where AnaStatus=False";
                var list = db.Ado.SqlQuery<Entity.ScheduleCombine>(sql);
                return list;
            }
        }


        /// <summary>
        /// 大批量插入
        /// </summary>
        public bool BulkInserts_SplitTable(List<Entity.ScheduleCombine> list)
        {
            if (list == null || list.Count < 1)
                return default;
            using (SqlSugarClient db = Connection)
            {
                ///自己来制定定义的规则
                db.CurrentConnectionConfig.ConfigureExternalServices.SplitTableService = new Entity.ScheduleCombineSubTableService();
                db.CodeFirst
                    .SplitTables()//标识分表
                    .InitTables<Entity.ScheduleCombine>(); //程序启动时加这一行,如果一张表没有会初始化一张

                //大数据写入+表不存在会建表
                //自动找表大数据写入 
                return db.Fastest<Entity.ScheduleCombine>().SplitTable().BulkCopy(list) > 0;
            }
        }



        /// <summary>
        /// 大批量插入
        /// </summary>
        public async Task<bool> BulkInserts_Create_Async(string runFlag, List<Entity.ScheduleCombine> list)
        {
            if (list == null || list.Count < 1)
                return default;
            var tableName = GetTableName(runFlag);
            using (SqlSugarClient db = Connection)
            {
                var exist_sql = $"select count(*)  from sqlite_master where type = 'table' and name = '{tableName}' ;";
                if (db.Ado.GetInt(exist_sql) < 1)
                {
                    var sql_create_table = $"CREATE TABLE {tableName} (\r\n ID   BIGINT NOT NULL\r\n    PRIMARY KEY,\r\n    RunFlag VARCHAR (255),\r\n  RunCount    INTEGER,\r\n    Pump1   REAL,\r\n   Pump2  REAL,\r\n    Pump3   REAL,\r\n   CurveQH    VARCHAR (255),\r\n    CurveQP    VARCHAR (255),\r\n   AnaStatus BIT\r\n);";
                    if (db.Ado.ExecuteCommand(sql_create_table) < 1)
                    {
                        return false;
                    }
                }
                return await db.Fastest<Entity.ScheduleCombine>().AS(tableName).BulkCopyAsync(list) > 0;
            }
        }


        /// <summary>
        /// 大批量插入
        /// </summary>
        public bool BulkInserts_Create(string runFlag, List<Entity.ScheduleCombine> list)
        {
            if (list == null || list.Count < 1)
                return default;
            var tableName = GetTableName(runFlag);
            using (SqlSugarClient db = Connection)
            {
                var exist_sql = $"select count(*)  from sqlite_master where type = 'table' and name = '{tableName}';";
                if (db.Ado.ExecuteCommand(exist_sql) < 1)
                {
                    var sql_create_table = $"CREATE TABLE {tableName} (\r\n ID   BIGINT NOT NULL\r\n    PRIMARY KEY,\r\n    RunFlag VARCHAR (255),\r\n  RunCount    INTEGER,\r\n    Pump1   REAL,\r\n   Pump2  REAL,\r\n    Pump3   REAL,\r\n   CurveQH    VARCHAR (255),\r\n    CurveQP    VARCHAR (255),\r\n   AnaStatus BIT\r\n);";
                    db.Ado.ExecuteCommand(sql_create_table);
                }
                //大数据写入
                return db.Fastest<Entity.ScheduleCombine>().AS(tableName).BulkCopy(list) > 0;
            }
        }

        /// <summary>
        /// 大批量插入
        /// </summary> 
        public bool BulkInserts_NativeSql(string runFlag, List<Entity.ScheduleCombine> list)
        {
            var tableName = GetTableName(runFlag);
            var connect = ConfigHelper.ConnectionString;
            SQLiteConnection connection = new SQLiteConnection(connect);//连接对象初始化 
            connection.Open();//打开连接

            SQLiteCommand command = new SQLiteCommand(connection);//命令对象初始化 
            command.CommandText = $"VACUUM;";//执行VACUUM命令收缩数据库
            command.ExecuteNonQuery();

            SQLiteTransaction transaction = connection.BeginTransaction();//开始事务 
            var sql_exist_table = $"select count(*)  from sqlite_master where type = 'table' and name = '{tableName}';";
            command.CommandText = sql_exist_table;
            if (command.ExecuteNonQuery() < 1)//没有表就创建表
            {
                var sql_create_table = $"CREATE TABLE {tableName} (\r\n    ID        BIGINT        NOT NULL\r\n                            PRIMARY KEY,\r\n    RunFlag   VARCHAR (255),\r\n    RunCount  INTEGER,\r\n    Pump1     REAL,\r\n    Pump2     REAL,\r\n    Pump3     REAL,\r\n    CurveQH   VARCHAR (255),\r\n    CurveQP   VARCHAR (255),\r\n    AnaStatus BIT\r\n);";
                command.CommandText = sql_create_table;
                command.ExecuteNonQuery();
            }

            var group = list.GroupBy(x => x.ID).Where(x => x.Count() > 1).Count();

            for (int i = 0; i < list.Count; i++) //[---使用事务---]执行INSERT命令
            {
                var item = list[i];
                var sql_insert = $"INSERT INTO {tableName}(ID, RunFlag, RunCount, Pump1, Pump2, Pump3, CurveQH, CurveQP, AnaStatus) " +
                    $"VALUES ('{item.ID}','{item.RunFlag}','{item.RunCount}','{item.Pump1}','{item.Pump2}','{item.Pump3}','{item.CurveQH}','{item.CurveQP}','{item.AnaStatus}')";
                command.CommandText = sql_insert;
                command.ExecuteNonQuery();
            }
            // var result = command.ExecuteScalar();
            transaction.Commit();//提交事务
            connection.Close();//关闭连接 
            return true;
        }


        /// <summary>
        /// 设置已分析状态
        /// </summary>
        public bool SetAnaStatus(string tableName, long id)
        {
            using (SqlSugarClient db = Connection)
            {
                var sql = $"update {tableName} set AnaStatus=True where ID={id}";
                var bol = db.Ado.ExecuteCommand(sql) > 0;
                return bol;
            }
        }


        /// <summary>
        /// 设置已分析状态
        /// </summary>
        public bool SetAnaStatus(string tableName, List<long> ids)
        {
            using (SqlSugarClient db = Connection)
            {
                var sql = $"update {tableName} set AnaStatus=True where ID in(@ids)";
                var obj = new { ids = ids.ToArray() };
                var bol = db.Ado.ExecuteCommand(sql, obj) > 0;
                return bol;
            }
        }


        /// <summary>
        /// 判断数据库是否存在表
        /// </summary> 
        public bool ExistTable(string runFlag)
        {
            using (SqlSugarClient db = Connection)
            {
                var sql = $"select count(*)  from sqlite_master where type = 'table' and name = '{GetTableName(runFlag)}';";
                var bol = db.Ado.ExecuteCommand(sql) > 0;
                return bol;
            }
        }

        /// <summary>
        /// 获取全部表名
        /// </summary>
        public bool DeleteAllTable()
        {
            var tables = GetAllTableName();
            if (tables == null || !tables.Any())
                return false;

            using (SqlSugarClient db = Connection)
            {
                db.BeginTran();

                foreach (var table in tables)
                {
                    var sql = $"drop table {table};";
                    db.Ado.ExecuteCommand(sql);
                }
                db.CommitTran();
            }
            return true;
        }


    }
}