from dao.dao import load_cust_data_from_mysql, load_product_data_from_mysql, load_order_data_from_mysql
from models.rank.data.config import CustConfig, ProductConfig
import pandas as pd

class DataProcess():
    def __init__(self, city_uuid):
        print("正在加载cust_info...")
        self._cust_data = load_cust_data_from_mysql(city_uuid)
        print("正在加载product_info...")
        self._product_data = load_product_data_from_mysql(city_uuid)
        print("正在加载order_info...")
        self._order_data = load_order_data_from_mysql(city_uuid)
        
    def data_process(self):
        """数据预处理"""
        
        # 1. 获取指定的特征组合
        self._cust_data = self._cust_data[CustConfig.FEATURE_COLUMNS]
        self._product_data = self._product_data[ProductConfig.FEATURE_COLUMNS]
        
        # 2. 数据清洗
        self._clean_cust_data()
        self._clean_product_data()
        
        # 3. 将零售户信息表与卷烟信息表进行笛卡尔积连接
        self._descartes()
        
        # 4. 根据order表中的信息给数据打标签
        self._labeled_data()
        
        # 5. 选取训练样本
        self._generate_train_data()
        
    
    def _clean_cust_data(self):
        """用户信息表数据清洗"""
        # 根据配置规则清洗数据
        for feature, rules, in CustConfig.CLEANING_RULES.items():
            if rules["type"] == "num":
                # 先将数值型字符串转换为数值
                self._cust_data[feature] = pd.to_numeric(self._cust_data[feature], errors="coerce")
                
            if rules["method"] == "fillna":
                if rules["opt"] == "fill":
                    self._cust_data[feature] = self._cust_data[feature].fillna(rules["value"])
                elif rules["opt"] == "replace":
                    self._cust_data[feature] = self._cust_data[feature].fillna(self._cust_data[rules["value"]])
                elif rules["opt"] == "mean":
                    self._cust_data[feature] = self._cust_data[feature].fillna(self._cust_data[feature].mean())
    
    def _clean_product_data(self):
        """卷烟信息表数据清洗"""
        for feature, rules, in ProductConfig.CLEANING_RULES.items():
            if rules["type"] == "num":
                self._product_data[feature] = pd.to_numeric(self._product_data[feature], errors="coerce")
            
            if rules["method"] == "fillna":
                if rules["opt"] == "fill":
                    self._product_data[feature] = self._product_data[feature].fillna(rules["value"])
                elif rules["opt"] == "mean":
                    self._product_data[feature] = self._product_data[feature].fillna(self._product_data[feature].mean())
    
    def _descartes(self):
        """将零售户信息与卷烟信息进行笛卡尔积连接"""
        self._cust_data["descartes"] = 1
        self._product_data["descartes"] = 1
        
        self._descartes_data = pd.merge(self._cust_data, self._product_data, on="descartes").drop("descartes", axis=1)
        
    def _labeled_data(self):
        """根据order表信息给descartes_data数据打标签"""
        # 获取order表中的正样本组合
        order_combinations = self._order_data[["BB_RETAIL_CUSTOMER_CODE", "PRODUCT_CODE"]].drop_duplicates()
        order_set = set(zip(order_combinations["BB_RETAIL_CUSTOMER_CODE"], order_combinations["PRODUCT_CODE"]))
        
        # 在descartes_data中打标签：正样本为1，负样本为2
        self._descartes_data['label'] = self._descartes_data.apply(
            lambda row: 1 if (row['BB_RETAIL_CUSTOMER_CODE'], row['product_code']) in order_set else 0, axis=1)
    
    def _generate_train_data(self):
        """从descartes_data中生成训练数据"""
        positive_samples = self._descartes_data[self._descartes_data["label"] == 1]
        negative_samples = self._descartes_data[self._descartes_data["label"] == 0]
        
        positive_count = len(positive_samples)
        negative_count = min(2 * positive_count, len(negative_samples))
        print(positive_count)
        print(negative_count)
        
        # 随机抽取2倍正样本数量的负样本
        negative_samples_sampled = negative_samples.sample(n=negative_count, random_state=42)
        # 合并正负样本
        self._train_data = pd.concat([positive_samples, negative_samples_sampled], axis=0)
        self._train_data = self._train_data.sample(frac=1, random_state=42).reset_index(drop=True)
        
        # 保存训练数据
        self._train_data.to_csv("./models/rank/data/gbdt_data.csv", index=False)
    
if __name__ == '__main__':
    processor = DataProcess("00000000000000000000000011445301")
    processor.data_process()