import pymysql
from framework.server_config import ServerConfig
import copy
from framework.open_response import MinCustomException
from framework.response_code import ResponseCode


class MysqlCli(ServerConfig):
    def __init__(self):
        super().__init__()
        self._sql = None
        # 连接
        self._connect = self._connect_mysql()
        # 游标
        self._cursor = self._connect.cursor()
        # response message
        self._sql_response: dict = {"Status": False,
                                    "Result": None,
                                    "Execute_sql": None,
                                    "Exception_error": None}

    def _connect_mysql(self, need_character: bool = False):
        if need_character:
            return pymysql.connect(host=self.mysql_host,
                                   user=self.mysql_user,
                                   password=self.mysql_password,
                                   database=self.mysql_database,
                                   charset=self.mysql_character,
                                   port=self.mysql_port)
        else:
            return pymysql.connect(host=self.mysql_host,
                                   user=self.mysql_user,
                                   password=self.mysql_password,
                                   database=self.mysql_database,
                                   port=self.mysql_port)

    def commit_all(self, debug: bool = False, please_commit: bool = True) -> dict:
        _result = copy.deepcopy(self._sql_response)
        if not self._sql:
            _result.update({"result": "Execute_SQL Is Null! "
                                      "\nPlease Run 'self.create_sql(sql:str)'",
                            "Execute_sql": self._sql})
            self.call_print_result(_result)
            return _result

        try:
            self._cursor.execute(self._sql)
            if please_commit:
                self._connect.commit()
            _result.update({"Status": True,
                            "Result": "Commit Success!"})

        except Exception as error:
            self._connect.rollback()
            _result.update({"Result": "Commit Exception! RollBack",
                            "Exception_error": error})
            self.call_print_result(_result)

        finally:
            self.flush_sql()
            return _result

    def fetchone(self, debug: bool = False, fetchall: bool = False) -> dict:
        _result = copy.deepcopy(self._sql_response)
        if not self._sql:
            _result.update({"Result": "Execute_SQL Is Null! "
                                      "\nPlease Run 'self.create_sql(sql:str)'"})
            self.call_print_result(_result)
            return _result
        _result.update({"Execute_sql": self._sql})
        try:
            self._cursor.execute(self._sql)

            if not fetchall:
                _result.update({"Result": self._cursor.fetchone(),
                                "Status": True})
            else:
                _result.update({"Result": self._cursor.fetchall(),
                                "Status": True})
        except Exception as error:
            _result.update({"Exception_error": error})
            self.call_print_result(_result)
        finally:
            self.flush_sql()
            return _result

    def flush_sql(self):
        self._sql = None

    def create_sql(self, sql: str):
        self._sql = sql

    def ping_connect(self):
        self._connect.ping(True)

    def close_connect(self):
        if self._cursor:
            self._cursor.close()
        if self._connect:
            self._connect.close()

    @staticmethod
    def call_result(result):
        print(result)
        return result["Result"]

    @staticmethod
    def call_status(result):
        return result["Status"]

    @staticmethod
    def call_execute_sql(result):
        return result["Execute_sql"]

    @staticmethod
    def call_exception_error(result):
        return result["Exception_error"]

    @staticmethod
    def call_print_result(result):
        print("-" * 50)
        print("Database Error:")
        for key, value in result.items():
            print(f"{key}: {value}")

    def check_mysql_exception(self, mysql_result: dict, print_result: bool = False):
        if not self.call_status(mysql_result):
            if print_result:
                self.call_print_result(mysql_result)
            raise MinCustomException(ResponseCode.RESPONSE_501_NOT_IMPLEMENTED_EXCEPTION)

    def check_mysql_response_null(self, mysql_result: dict, print_result: bool = False):
        if not self.call_result(mysql_result):
            if print_result:
                self.call_print_result(mysql_result)
            raise MinCustomException(ResponseCode.RESPONSE_501_NOT_IMPLEMENTED_NULL)