from bson import ObjectId
from pymongo import MongoClient
from config.db import MONGO_HOST, MONGO_PORT, MONGO_DB


class DbManager(object):
    def __init__(self):
        self.mongo = MongoClient(host=MONGO_HOST, port=MONGO_PORT)
        self.db = self.mongo[MONGO_DB]

    def save(self, col_name: str, item, **kwargs):
        col = self.db[col_name]
        col.save(item, **kwargs)

    def remove(self, col_name: str, cond: dict, **kwargs):
        col = self.db[col_name]
        col.remove(cond, **kwargs)

    def update(self, col_name: str, cond: dict, values: dict, **kwargs):
        col = self.db[col_name]
        col.update(cond, {'$set': values}, **kwargs)

    def update_one(self, col_name: str, id: str, values: dict, **kwargs):
        col = self.db[col_name]
        col.find_one_and_update({'_id': ObjectId(id)}, {'$set': values})

    def list(self, col_name: str, cond: dict, skip: int = 0, limit: int = 10, **kwargs):
        col = self.db[col_name]
        data = []
        for item in col.find(cond).skip(skip).limit(limit):
            data.append(item)
        return data

    def get(self, col_name: str, id: str):
        col = self.db[col_name]
        return col.find_one({'_id': ObjectId(id)})

    def count(self, col_name: str, cond):
        col = self.db[col_name]
        return col.count(cond)


db_manager = DbManager()