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import { graphql } from 'react-apollo';
import {
  REMOVE_FROM_CART_MUTATION,
  ALL_ITEMS_QUERY,
  REMOVE_ITEM_MUTATION,
  SINGLE_ITEM_QUERY,
  CURRENT_USER_QUERY,
  ADD_TO_CART_MUTATION,
  UPDATE_UI,
  GET_UI_STATE,
  TOGGLE_CART,
  UPDATE_USER_MUTATION,
  CREATE_ORDER_MUTATION,
} from '../queries/index';
import { perPage } from '../config';

// THESE ARE CALLED CONNECTIONS, NOT ENHANCERS

export const itemEnhancer = graphql(ALL_ITEMS_QUERY, {
  name: 'itemsQuery',
  options({ page }) {
    return {
      variables: {
        skip: page * perPage - perPage,
        first: perPage,
      },
    };
  },
});

export const removeItemMutation = graphql(REMOVE_ITEM_MUTATION, {
  name: 'removeItem',
  options: {
    update: (proxy, { data: { deleteItem } }) => {
      // grab the data from our cache
      const data = proxy.readQuery({ query: ALL_ITEMS_QUERY });
      console.log(data);
      // filter out the deleted item
      data.items = data.items.filter(item => item.id !== deleteItem.id);

      // and then "set state" (update cache), so it will update wherever we have used this data on the page
      proxy.writeQuery({ query: ALL_ITEMS_QUERY, data });
    },
  },
});

export const singleItemEnhancer = graphql(SINGLE_ITEM_QUERY, {
  name: 'findItem',
  // This comes from Props
  options: ({ id }) => ({
    variables: { id },
  }),
});

// export const removeFromCartEnhancer = graphql(REMOVE_FROM_CART_MUTATION, {
//   name: 'removeFromCart',
//   options: {
//     update: (proxy, payload) => {
//       const data = proxy.readQuery({ query: CURRENT_USER_QUERY });
//       const cartItemId = payload.data.removeFromCart.id;
//       data.me.cart = data.me.cart.filter(item => item.id !== cartItemId);
//       proxy.writeQuery({ query: CURRENT_USER_QUERY, data });
//     },
//   },
// });

// export const addToCartEnhancer = graphql(ADD_TO_CART_MUTATION, {
//   name: 'addToCart',
//   options: {
//     update: (proxy, payload) => {
//       console.log('UODATEING CART ENAHACNER');
//       const newCartItem = payload.data.addToCart;
//       const data = proxy.readQuery({ query: CURRENT_USER_QUERY });
//       const existingIndex = data.me.cart.findIndex(cartItem => cartItem.id === newCartItem.id);
//       if (existingIndex >= 0) {
//         // already in cache, just replace it
//         data.me.cart = [...data.me.cart.slice(0, existingIndex), newCartItem, ...data.me.cart.slice(existingIndex + 1)];
//       } else {
//         data.me.cart = [...data.me.cart, newCartItem];
//       }
//       proxy.writeQuery({ query: CURRENT_USER_QUERY, data });
//     },
//   },
// });

export const userEnhancer = graphql(CURRENT_USER_QUERY, { name: 'currentUser' });

export const updateUserEnhancer = graphql(UPDATE_USER_MUTATION, {
  name: 'updateUser',
});

// export const const userEnhancer = graphql(CURRENT_USER_QUERY, { name: 'currentUser' });
export const createOrderEnhancer = graphql(CREATE_ORDER_MUTATION, { name: 'createOrder' });