import json
import traceback

from application.common import MysqlHelper, AliyunLogger,Local


class MysqlService:
    def __init__(self,platform, mode, task_id):
        self.env = "prod"
        self.task_id = task_id
        self.mode = mode
        self.platform = platform
        self.MySQL = MysqlHelper(mode=self.mode, platform=self.platform, env=self.env)
        self.aliyun_log = AliyunLogger(platform=self.platform, mode=self.mode)
        self.logger = Local.init_logger(platform=self.platform, mode=self.mode, log_level="INFO", log_to_console=True)
        Local.init_logger(self.platform,self.mode)


    def get_rule_dict(self):
        """
        :return: 返回任务的规则， task_rule
        """
        rule_dict = {}
        task_rule_sql = f"SELECT rule FROM crawler_task_v3 WHERE id = {self.task_id};"
        data = self.MySQL.select(task_rule_sql)
        if data:
            rule_list = json.loads(data[0][0])
            for item in rule_list:
                for key in item:
                    rule_dict[key] = item[key]
        self.aliyun_log.logging(
            code=1000,
            message="抓取规则",
            data=rule_dict
        )
        return rule_dict


    def get_user_list(self):
        """
        :return: 返回用户列表
        """
        task_user_list_sql = f"SELECT uid, link, nick_name from crawler_user_v3 where task_id = {self.task_id};"
        uid_list = self.MySQL.select(task_user_list_sql)
        user_list = [{"uid": i[0], "link": i[1], "nick_name": i[2]} for i in uid_list] if uid_list else []
        self.aliyun_log.logging(
            code=1000,
            message="用户列表",
            data=user_list
        )
        return user_list

    def check_user_id(self, uid):
        """
        检查指定用户ID是否存在于数据库的zqkd_uid表中。

        :param uid:要检查的用户ID
        :return:如果用户ID存在于表中返回True，否则返回False
        """
        try:
            query_sql = f""" SELECT uid FROM zqkd_user WHERE uid = "{uid}"; """
            result = self.mysql.select(sql=query_sql)
            return bool(result)
        except Exception as e:
            tb = traceback.format_exc()
            self.LocalLog.error(f"检查用户ID失败: {e}\n{tb}")
            return False

    def update_user(self, uid, user_name, avatar_url):
        """
        更新数据库中指定用户的用户名和头像URL。

        :param uid:要更新信息的用户ID
        :param user_name:新的用户名
        :param avatar_url:新的头像URL
        :return:如果更新操作成功，返回更新操作的结果（通常是影响的行数），失败则返回None或抛出异常
        """
        try:
            update_sql = f""" UPDATE zqkd_user SET avatar_url = "{avatar_url}", user_name = "{user_name}" WHERE uid = "{uid}"; """
            return self.MySQL.update(sql=update_sql)
        except Exception as e:
            tb = traceback.format_exc()
            self.logger.error(f"更新用户信息失败: {e}\n{tb}")
            return None

    def insert_user(self, uid, user_name, avatar_url):
        """
        向数据库的zqkd_user表中插入或更新用户信息

        :param uid: 用户ID（数值类型）
        :param user_name: 用户名
        :param avatar_url: 头像URL
        :return: 成功返回影响的行数，失败返回None
        """
        try:
            # 直接拼接SQL（不推荐，有SQL注入风险）
            insert_sql = f"""
                  INSERT INTO zqkd_user (uid, avatar_url, user_name) 
                  VALUES ({uid}, '{avatar_url.replace("'", "''")}', '{user_name.replace("'", "''")}') 
                  ON DUPLICATE KEY UPDATE 
                  user_name = '{user_name.replace("'", "''")}', 
                  avatar_url = '{avatar_url.replace("'", "''")}'
              """
            return self.MySQL.update(sql=insert_sql)
        except Exception as e:
            tb = traceback.format_exc()
            self.logger.error(f"插入用户信息失败: {e}\n{tb}")
            return None

    def get_today_videos(self):
        try:
            # 手动转义单引号（仅缓解部分风险）

            sql = """
                          SELECT count(*) as cnt
                          FROM crawler_video 
                          WHERE create_time >= CURDATE() 
                            AND create_time < CURDATE() + INTERVAL 1 DAY 
                            AND platform = %s 
                            AND strategy = %s
                      """
            result = self.MySQL.select_params(sql, (self.platform, self.mode))
            if result and len(result) > 0:
                return result[0][0]  # 返回第一行第一列的计数值
            return 0  # 无结果时返回0
        except Exception as e:
            self.logger.error(f"查询失败: {e}")
            return 0

    def select_user(self, last_scanned_id=0):
        """
        根据last_scanned_id查询用户数据
        :param last_scanned_id: 上次扫描的ID，0表示从头开始
        :return: 查询结果列表
        """
        try:
            # 构建查询（根据last_scanned_id过滤）
            query = "SELECT id, uid FROM zqkd_user"
            if last_scanned_id > 0:
                query += f" WHERE id > {last_scanned_id}"
            query += " ORDER BY id ASC"

            return self.MySQL.select(query)
        except Exception as e:
            tb = traceback.format_exc()
            self.logger.error(f"查询用户列表失败: {e}\n{tb}")
            return []