import PropTypes from 'prop-types';
import React, { Component } from 'react';
import { connect } from 'react-redux';
import { createSelector } from 'reselect';
import { clearAlbums, fetchAlbums } from 'Store/Actions/albumActions';
import { saveAlbumStudio, setAlbumStudioFilter, setAlbumStudioSort } from 'Store/Actions/albumStudioActions';
import createArtistClientSideCollectionItemsSelector from 'Store/Selectors/createArtistClientSideCollectionItemsSelector';
import createDimensionsSelector from 'Store/Selectors/createDimensionsSelector';
import AlbumStudio from './AlbumStudio';

function createAlbumFetchStateSelector() {
  return createSelector(
    (state) => state.albums.items.length,
    (state) => state.albums.isFetching,
    (state) => state.albums.isPopulated,
    (length, isFetching, isPopulated) => {
      const albumCount = (!isFetching && isPopulated) ? length : 0;
      return {
        albumCount,
        isFetching,
        isPopulated
      };
    }
  );
}

function createMapStateToProps() {
  return createSelector(
    createAlbumFetchStateSelector(),
    createArtistClientSideCollectionItemsSelector('albumStudio'),
    createDimensionsSelector(),
    (albums, artist, dimensionsState) => {
      const isPopulated = albums.isPopulated && artist.isPopulated;
      const isFetching = artist.isFetching || albums.isFetching;
      return {
        ...artist,
        isPopulated,
        isFetching,
        albumCount: albums.albumCount,
        isSmallScreen: dimensionsState.isSmallScreen
      };
    }
  );
}

const mapDispatchToProps = {
  fetchAlbums,
  clearAlbums,
  setAlbumStudioSort,
  setAlbumStudioFilter,
  saveAlbumStudio
};

class AlbumStudioConnector extends Component {

  //
  // Lifecycle

  componentDidMount() {
    this.populate();
  }

  componentWillUnmount() {
    this.unpopulate();
  }

  //
  // Control

  populate = () => {
    this.props.fetchAlbums();
  }

  unpopulate = () => {
    this.props.clearAlbums();
  }

  //
  // Listeners

  onSortPress = (sortKey) => {
    this.props.setAlbumStudioSort({ sortKey });
  }

  onFilterSelect = (selectedFilterKey) => {
    this.props.setAlbumStudioFilter({ selectedFilterKey });
  }

  onUpdateSelectedPress = (payload) => {
    this.props.saveAlbumStudio(payload);
  }

  //
  // Render

  render() {
    return (
      <AlbumStudio
        {...this.props}
        onSortPress={this.onSortPress}
        onFilterSelect={this.onFilterSelect}
        onUpdateSelectedPress={this.onUpdateSelectedPress}
      />
    );
  }
}

AlbumStudioConnector.propTypes = {
  setAlbumStudioSort: PropTypes.func.isRequired,
  setAlbumStudioFilter: PropTypes.func.isRequired,
  fetchAlbums: PropTypes.func.isRequired,
  clearAlbums: PropTypes.func.isRequired,
  saveAlbumStudio: PropTypes.func.isRequired
};

export default connect(createMapStateToProps, mapDispatchToProps)(AlbumStudioConnector);