const getGQL = (url) => async (query, variables) => {
	try {
		const token = localStorage.token ? localStorage.token : '';
		const res = await fetch(url, {
			method: 'POST',
			headers: {
				'Content-Type': 'application/json',
				Authorization: 'Bearer ' + token,
			},
			body: JSON.stringify({ query, variables }),
		});
		return res.json();
	} catch (e) {
		return e;
	}
};

const gql = getGQL('http://shop-roles.asmer.fs.a-level.com.ua/graphql');

const loginGQL = async (login, password) => {
	try {
		const { data } = await gql(
			`
query log($login:String, $password:String){
        login(login:$login, password:$password)
    }`,
			{ login, password }
		);
		const token = data.login;
		if (token) localStorage.token = token;
		return token;
	} catch (e) {
		console.error(e);
	}
};

const registerGQL = async (login, password) => {
	try {
		const { data } = await gql(
			`mutation register($login:String, $password:String){
        UserUpsert(user: {login:$login, password:$password}){
			_id,login
		}
    }`,
			{ login, password }
		);
		return data.UserUpsert;
	} catch (e) {
		console.error(e);
	}
};

const categoriesGQL = async () => {
	try {
		const { data } = await gql(
			`query allCategories{
		CategoryFind(query:"[{}]"){
          _id,
          name,
		  createdAt
		}
	}`,
			{}
		);
		return data.CategoryFind;
	} catch (e) {
		console.error(e);
	}
};

const goodsGQL = async () => {
	try {
		const { data } = await gql(
			`query allGoods{
		GoodFind(query:"[{}]"){
          _id
          name,
		  createdAt,
		  price,
      images  {
				url
			}
		}
	}`,
			{}
		);
		return data.GoodFind;
	} catch (e) {
		console.error(e);
	}
};

const categoryById = async (_id) => {
	try {
		const { data } = await gql(
			`query categoryById($id:String){
		CategoryFindOne(query:$id){
			_id,name,createdAt,
			goods {
				_id,createdAt,name
			}
		 },
	}`,
			{ id: JSON.stringify([{ _id }]) }
		);
		return data.CategoryFindOne;
	} catch (e) {
		console.error(e);
	}
};

const goodById = async (_id) => {
	try {
		const { data } = await gql(
			`query findById($id:String){
        GoodFindOne (query:$id){
            _id createdAt name price description images  {
				url
			}
        }
    }`,
			{ id: JSON.stringify([{ _id }]) }
		);

		return data.GoodFindOne;
	} catch (e) {
		console.error(e);
	}
};

const ordersGQL = async () => {
	try {
		const { data } = await gql(
			`query orders {
    OrderFind(query:"[{}]")
    {
    _id
    createdAt 
    total
    orderGoods {
      price
      count
      total
      good {
        name
      }
    }
  }
}`,
			{}
		);
		return data.OrderFind;
	} catch (e) {
		console.error(e);
	}
};

const orderById = async (_id) => {
	try {
		const { data } = await gql(
			`query findById($id:String){
        OrderFindOne (query:$id){
            _id createdAt    
        }
    }`,
			{ id: JSON.stringify([{ _id }]) }
		);
		return data.OrderFindOne;
	} catch (e) {
		console.error(e);
	}
};

const makeOrderById = async (id) => {
	try {
		const { data } = await gql(
			`  mutation makeOrder($id:ID){
		OrderUpsert(order:{
      orderGoods:[
        {count:1,good:{_id:$id}}
      ]
    }){
          _id,createdAt,total
		}
	}`,
			{ id }
		);

		return data.OrderUpsert;
	} catch (e) {
		console.error(e);
	}
};

export {
	loginGQL,
	registerGQL,
	categoriesGQL,
	goodsGQL,
	categoryById,
	goodById,
	ordersGQL,
	orderById,
	makeOrderById,
};