from database import MySqlDatabaseHelper
from sqlalchemy import text, bindparam
import pandas as pd

class MySqlDao:
    _instance = None
    
    def __new__(cls):
        if not cls._instance:
            cls._instance = super(MySqlDao, cls).__new__(cls)
            cls._instance._initialized = False
        return cls._instance
    
    
    def __init__(self):
        if self._initialized:
            return
        
        self.db_helper = MySqlDatabaseHelper()
        self._product_tablename = "tads_brandcul_product_info_f"
        self._cust_tablename = "tads_brandcul_cust_info_f"
        self._order_tablename = "tads_brandcul_consumer_order"
        self._eval_order_name = "tads_brandcul_consumer_order_check_week"
        self._mock_order_tablename = "yunfu_mock_data"
        self._shopping_tablename = "tads_brandcul_cust_info_lbs_f"
        # self._shopping_tablename = "yunfu_shopping_mock_data"
        self._report_tablename = "tads_brandcul_report"
        
        self._initialized = True
        
    def load_product_data(self, city_uuid):
        """从数据库中读取商品信息"""
        query = f"SELECT * FROM {self._product_tablename} WHERE city_uuid = :city_uuid"
        params = {"city_uuid": city_uuid}
        
        data = self.db_helper.load_data_with_page(query, params)
        return data
        
    def load_cust_data(self, city_uuid):
        """从数据库中读取商户信息"""
        query = f"SELECT * FROM {self._cust_tablename} WHERE BA_CITY_ORG_CODE = :city_uuid"
        params = {"city_uuid": city_uuid}
        
        data = self.db_helper.load_data_with_page(query, params)
        return data
    
    def load_order_data(self, city_uuid):
        """从数据库中读取订单信息"""
        query = f"SELECT * FROM {self._order_tablename} WHERE city_uuid = :city_uuid"
        params = {"city_uuid": city_uuid}
        
        data = self.db_helper.load_data_with_page(query, params)
        data.drop('stat_month', axis=1, inplace=True)
        data.drop('city_uuid', axis=1, inplace=True)
        
        cust_list = self.get_cust_list(city_uuid)
        cust_index = cust_list.set_index("BB_RETAIL_CUSTOMER_CODE")
        data = data.join(cust_index, on="cust_code", how="inner")
        return data
    
    def load_delivery_order_data(self, city_uuid, start_time, end_time):
        """从数据库中读取订单信息"""
        query = f"SELECT * FROM {self._eval_order_name} WHERE city_uuid = :city_uuid AND cycle_begin_date = :start_time AND cycle_end_date = :end_time"
        params = {
            "city_uuid": city_uuid,
            "start_time": start_time,
            "end_time": end_time
        }
        
        data = self.db_helper.load_data_with_page(query, params)
        
        
        return data
    
    def load_mock_order_data(self):
        """从数据库中读取mock的订单信息"""
        query = f"SELECT * FROM {self._mock_order_tablename}"
        
        data = self.db_helper.load_data_with_page(query, {})
        
        return data
    
    def load_shopping_data(self, city_uuid):
        """从数据库中读取商圈数据"""
        query = f"SELECT * FROM {self._shopping_tablename} WHERE city_uuid = :city_uuid"
        params = {"city_uuid": city_uuid}
        
        data = self.db_helper.load_data_with_page(query, params)
        
        return data
    
    def get_product_by_id(self, city_uuid, product_id):
        """根据city_uuid 和 product_id 从表中获取拼柜信息"""
        query = f"""
            SELECT *
            FROM {self._product_tablename}
            WHERE city_uuid = :city_uuid
            AND product_code = :product_id
        """
        params = {"city_uuid": city_uuid, "product_id": product_id}
        data = self.db_helper.load_data_with_page(query, params)
        
        return data
    
    def get_cust_by_ids(self, city_uuid, cust_id_list):
        """根据零售户列表查询其信息"""
        if not cust_id_list:
            return pd.DataFrame()

        query = text(f"""
        SELECT *
        FROM {self._cust_tablename}
        WHERE BA_CITY_ORG_CODE = :city_uuid
        AND BB_RETAIL_CUSTOMER_CODE IN :ids
    """).bindparams(bindparam("ids", expanding=True))
        params = {"city_uuid": city_uuid, "ids": list(cust_id_list)}
        data = pd.DataFrame(self.db_helper.fetch_all(query, params))

        return data
    
    def get_shop_by_ids(self, city_uuid, cust_id_list):
        """根据零售户列表查询其信息"""
        if not cust_id_list:
            return pd.DataFrame()

        query = text(f"""
        SELECT *
        FROM {self._shopping_tablename}
        WHERE city_uuid = :city_uuid
        AND cust_code IN :ids
    """).bindparams(bindparam("ids", expanding=True))
        params = {"city_uuid": city_uuid, "ids": list(cust_id_list)}
        data = pd.DataFrame(self.db_helper.fetch_all(query, params))

        return data
    
    def get_product_by_ids(self, city_uuid, product_id_list):
        """根据product_code列表查询其信息"""
        if not product_id_list:
            return pd.DataFrame()

        query = text(f"""
        SELECT *
        FROM {self._product_tablename}
        WHERE city_uuid = :city_uuid
        AND product_code IN :ids
    """).bindparams(bindparam("ids", expanding=True))
        params = {"city_uuid": city_uuid, "ids": list(product_id_list)}
        data = pd.DataFrame(self.db_helper.fetch_all(query, params))

        return data
    
    def get_order_by_product_ids(self, city_uuid, product_ids):
        """获取指定香烟列表的所有售卖记录"""
        if not product_ids:
            return pd.DataFrame()

        query = text(f"""
        SELECT *
        FROM {self._order_tablename}
        WHERE city_uuid = :city_uuid
        AND product_code IN :ids
    """).bindparams(bindparam("ids", expanding=True))
        params = {"city_uuid": city_uuid, "ids": list(product_ids)}
        data = pd.DataFrame(self.db_helper.fetch_all(query, params))

        cust_list = self.get_cust_list(city_uuid)
        cust_index = cust_list.set_index("BB_RETAIL_CUSTOMER_CODE")
        data = data.join(cust_index, on="cust_code", how="inner")

        return data
    
    def get_order_by_product(self, city_uuid, product_id):
        
        query = f"""
            SELECT *
            FROM {self._order_tablename}
            WHERE city_uuid = :city_uuid
            AND product_code = :product_id
        """
        params = {"city_uuid": city_uuid, "product_id": product_id}
        data = self.db_helper.load_data_with_page(query, params)
        
        cust_list = self.get_cust_list(city_uuid)
        cust_index = cust_list.set_index("BB_RETAIL_CUSTOMER_CODE")
        data = data.join(cust_index, on="cust_code", how="inner")
        
        return data
    
    def get_eval_order_by_product(self, city_uuid, product_id):
        query = f"""
            SELECT *
            FROM {self._eval_order_name}
            WHERE city_uuid = :city_uuid
            AND product_code = :product_id
        """
        params = {"city_uuid": city_uuid, "product_id": product_id}
        data = self.db_helper.load_data_with_page(query, params)
        
        return data
    
    def get_delivery_data_by_product(self, city_uuid, product_id, start_time, end_time):
        """通过品规获取验证数据"""
        query = f"""
            SELECT *
            FROM {self._eval_order_name}
            WHERE city_uuid = :city_uuid
            AND goods_code = :product_id
            AND cycle_begin_date = :start_time
            AND cycle_end_date = :end_time
        """
        params = {
            "city_uuid": city_uuid,
            "product_id": product_id,
            "start_time": start_time,
            "end_time": end_time,
        }
        data = self.db_helper.load_data_with_page(query, params)
        
        return data
    
    def get_order_by_cust(self, city_uuid, cust_id):
        query = f"""
            SELECT *
            FROM {self._order_tablename}
            WHERE city_uuid = :city_uuid
            AND cust_code = :cust_id
        """
        params = {"city_uuid": city_uuid, "cust_id": cust_id}
        data = self.db_helper.load_data_with_page(query, params)
        
        return data
    
    def get_order_by_cust_and_product(self, city_uuid, cust_id, product_id):
        query = f"""
            SELECT *
            FROM {self._order_tablename}
            WHERE city_uuid = :city_uuid
            AND cust_code = :cust_id
            AND product_code =:product_id
        """
        params = {"city_uuid": city_uuid, "cust_id": cust_id, "product_id": product_id}
        data = self.db_helper.load_data_with_page(query, params)
        
        return data
    
    def get_product_from_order(self, city_uuid):
        query = f"SELECT DISTINCT product_code FROM {self._order_tablename} WHERE city_uuid = :city_uuid"
        params = {"city_uuid": city_uuid}
        
        data = self.db_helper.load_data_with_page(query, params)

        return data

    def get_cust_list(self, city_uuid):
        query = f"SELECT DISTINCT BB_RETAIL_CUSTOMER_CODE FROM {self._cust_tablename} WHERE BA_CITY_ORG_CODE = :city_uuid"
        params = {"city_uuid": city_uuid}
        
        data = self.db_helper.load_data_with_page(query, params)

        return data

    def data_preprocess(self, data: pd.DataFrame):
        """数据预处理"""
        data.drop(["cust_uuid", "longitude", "latitude", "range_radius"], axis=1, inplace=True)
        remaining_cols = data.columns.drop(["city_uuid", "cust_code"])
        col_with_missing = remaining_cols[data[remaining_cols].isnull().any()].tolist() # 判断有缺失的字段
        col_all_missing = remaining_cols[data[remaining_cols].isnull().all()].to_list() # 全部缺失的字段
        col_partial_missing = list(set(col_with_missing) - set(col_all_missing)) # 部分缺失的字段
        
        for col in col_partial_missing:
            data[col] = data[col].fillna(data[col].mean())
        
        for col in col_all_missing:
            data[col] = data[col].fillna(0).infer_objects(copy=False)
        
    def insert_report(self, data_dict):
        """向report中插入数据"""
        return self.db_helper.insert_data(self._report_tablename, data_dict)
    
    def update_eval_report_data(self, cultivacation_id, eval_fileid):
        """更新投放记录中的验证报告fileid"""
        update_data = {"val_table": eval_fileid}
        conditions = [
            "cultivacation_id = :cultivacation_id",
        ]
        condition_params = {
            'cultivacation_id': cultivacation_id,
        }
        
        self.db_helper.update_data(self._report_tablename, update_data, conditions, condition_params)
    
    def get_report_file_id(self, cultivacation_id):
        """从report中根据cultivacation_id获取对应文件的fileid"""
        query = f"SELECT product_info_table, relation_table, similarity_product_table, recommend_table, val_table FROM {self._report_tablename} WHERE cultivacation_id = :cultivacation_id"
        params = {"cultivacation_id": cultivacation_id}
        
        result = self.db_helper.fetch_one(text(query), params)
        data = pd.DataFrame([dict(result._mapping)] if result else None)
        
        return data
        
if __name__ == "__main__":
    dao = MySqlDao()
    cultivacation_id = '10000001'
    
    data = dao.get_report_file_id(cultivacation_id)
    print(data)