# coding:utf-8
from pymongo import MongoClient
from pymongo.errors import AutoReconnect
from bson import ObjectId
import time
import urllib.parse as parse


class MongoDBInterface:
    def __init__(self, config):
        self.__host = config.get("ip_port", "")
        self.__user = config.get("user", "")
        self.__password = config.get("password", "")
        self.__database = config.get("db", "")
        self.connect()

    def connect(self):
        """
        连接数据库
        :return:
        """
        # 特殊符号转义
        self.__user = parse.quote_plus(self.__user)
        self.__password = parse.quote_plus(self.__password)

        # 连接数据库
        try:
            if self.__user:
                self.client = MongoClient(
                    "mongodb://{}:{}@{}".format(self.__user, self.__password, self.__host),
                    unicode_decode_error_handler='ignore', directConnection=True)
            else:
                self.client = MongoClient("mongodb://{}".format(self.__host), unicode_decode_error_handler='ignore',
                                          directConnection=True)
            self.db = self.client[self.__database]
        except AutoReconnect as e:
            self.connect()

    def disconnect(self):
        self.client.close()

    def find_by_id(self, collection_name, m_id):
        try:
            collection = self.db[collection_name]
            if isinstance(m_id, str):
                m_id = ObjectId(m_id)
            documents = collection.find_one({"_id": m_id})
            return documents
        except AutoReconnect:
            time.sleep(5)
            print("Connection to MongoDB lost. Reconnecting...")
            self.connect()  # 自动重连
            return self.find_by_id(collection_name, m_id)

    def update_by_id(self, collection_name, m_id, fields: dict):
        try:
            collection = self.db[collection_name]
            if isinstance(m_id, str):
                m_id = ObjectId(m_id)
            documents = collection.update_one({"_id": m_id}, {"$set": fields})
            return documents
        except AutoReconnect:
            print("Connection to MongoDB lost. Reconnecting...")
            self.connect()  # 自动重连
            return self.update_by_id(collection_name, m_id, fields)

    def find_relus(self, collection_name, hash_id):
        collection = self.db[collection_name]
        row = collection.find_one({"rules_id": hash_id})
        return row

    def find_rule_by_company(self, collection_name, company, version):
        collection = self.db[collection_name]
        row = collection.find_one({"company_name": company, "version": version})
        if not row:
            return None
        return row.get("rules_id")

    def find_rule_by_title(self, collection_name, title):
        collection = self.db[collection_name]
        row = collection.find_one({"title": title})
        if not row:
            return None
        return row

    def insert2db(self, collection_name, data: dict):
        collection = self.db[collection_name]
        collection.insert_one(data)