import React from 'react';
import PropTypes from 'prop-types';
import { ApolloProvider, getDataFromTree } from 'react-apollo';
import Head from 'next/head';
import initApollo from './initApollo';

// Gets the display name of a JSX component for dev tools
function getComponentDisplayName(Component) {
  return Component.displayName || Component.name || 'Unknown';
}

export default ComposedComponent =>
  class WithData extends React.Component {
    static displayName = `WithData(${getComponentDisplayName(ComposedComponent)})`;
    static propTypes = {
      serverState: PropTypes.object.isRequired,
    };

    static async getInitialProps(ctx) {
      // Initial serverState with apollo (empty)
      let serverState;

      // Evaluate the composed component's getInitialProps()
      let composedInitialProps = {};
      if (ComposedComponent.getInitialProps) {
        composedInitialProps = await ComposedComponent.getInitialProps(ctx);
      }

      // Run all GraphQL queries in the component tree
      // and extract the resulting data
      console.log('Trying...');
      console.log(ctx.query);
      const apollo = initApollo();
      try {
        // Run all GraphQL queries
        const data = await getDataFromTree(<ComposedComponent ctx={ctx} {...composedInitialProps} />, {
          router: {
            asPath: ctx.asPath,
            pathname: ctx.pathname,
            query: ctx.query,
          },
          client: apollo,
        }).catch(err => {
          console.log('CAUGHT HERE');
          console.log(err);
        });
      } catch (error) {
        // console.log(ctx.query);
        console.log('An error Happened SSR');
        console.log(error);
        // Prevent Apollo Client GraphQL errors from crashing SSR.
        // Handle them in components via the data.error prop:
        // http://dev.apollodata.com/react/api-queries.html#graphql-query-data-error
      }

      if (!process.browser) {
        // getDataFromTree does not call componentWillUnmount
        // head side effect therefore need to be cleared manually
        Head.rewind();
      }

      // Extract query data from the Apollo store
      serverState = {
        apollo: {
          data: apollo.cache.extract(),
        },
      };

      return {
        serverState,
        ...composedInitialProps,
      };
    }

    constructor(props) {
      super(props);
      this.apollo = initApollo(this.props.serverState.apollo.data);
    }

    render() {
      return (
        <ApolloProvider client={this.apollo}>
          <ComposedComponent {...this.props} />
        </ApolloProvider>
      );
    }
  };