"""
@author: luojunhui
"""
import aiomysql

from aiomysql.cursors import Cursor

from applications import log
from config import env


class AsyncMySQLClient(object):
    """
    Async MySQL
    """

    def __init__(self, app):
        self.app = app

    async def initPool(self):
        """
        初始化连接
        :return:
        """
        if env == "prod":
            self.app.mysql_pool = await aiomysql.create_pool(
                host='rm-bp1159bu17li9hi94.mysql.rds.aliyuncs.com',
                port=3306,
                user='crawler',
                password='crawler123456@',
                db='piaoquan-crawler',
                charset='utf8mb4',
                maxsize=100,
                connect_timeout=120,
            )
            log(
                code="1001",
                env=env,
                message="数据库初始化成功"
            )
        elif env == "dev":
            self.app.mysql_pool = await aiomysql.create_pool(
                host='rm-bp1k5853td1r25g3n690.mysql.rds.aliyuncs.com',
                port=3306,
                user='crawler',
                password='crawler123456@',
                db='piaoquan-crawler',
                charset='utf8mb4',
                maxsize=100,
                connect_timeout=120,
            )
            log(
                code="1001",
                env=env,
                message="数据库初始化成功"
            )
        else:
            log(
                code="1001",
                env=env,
                message="数据库初始化失败，环境校验失败"
            )
            return None

    async def closePool(self):
        """
        关闭 mysql 连接
        :return:
        """
        self.app.mysql_pool.close()
        await self.app.mysql_pool.wait_closed()

    async def asyncSelect(self, sql, cursor_type=Cursor):
        """
        select method
        :param sql:
        :param cursor_type:
        :return:
        """
        async with self.app.mysql_pool.acquire() as conn:
            async with conn.cursor(cursor_type) as cursor:
                await cursor.execute(sql)
                result = await cursor.fetchall()
                return result

    async def asyncInsert(self, sql, params):
        """
        insert and update method
        :param params:
        :param sql:
        :return:
        """
        async with self.app.mysql_pool.acquire() as coon:
            async with coon.cursor() as cursor:
                await cursor.execute(sql, params)
                await coon.commit()