# -*- coding: utf-8 -*-
"""
@author: zsc
@time: 2024/11/18
@desc:  数据处理
"""


# 数据预处理模块
class DataPreprocessor:
    def __init__(self, data):
        self.data = data

    def preprocess(self):
        # 更多的数据预处理函数
        processed_data = [
            item for item in self.data
            if 'user' in item and 'action' in item and 'item' in item
        ]
        processed_data = self.remove_duplicates(processed_data)
        processed_data = self.fill_missing_values(processed_data)
        processed_data = self.convert_data_types(processed_data)
        return processed_data

    def remove_duplicates(self, data):
        # 去除重复数据
        unique_data = []
        seen = set()
        for item in data:
            identifier = (item['user'], item['action'], item['item'])
            if identifier not in seen:
                unique_data.append(item)
                seen.add(identifier)
        return unique_data

    def fill_missing_values(self, data):
        # 填充缺失值
        for item in data:
            if 'item' not in item:
                item['item'] = 'unknown'
        return data

    def convert_data_types(self, data):
        # 转换数据类型
        for item in data:
            item['user'] = str(item['user'])
            item['action'] = str(item['action'])
            item['item'] = str(item['item'])
        return data