import React, { Component } from 'react';
import PropTypes from 'prop-types';

import {
  FlatList,
  StyleSheet,
  Text,
  View,
} from 'react-native';

import { SORT_MODES, VIEW_MODES } from '../constants/constants.js';

import FilterBar from '../components/Auction/FilterBar.js';
import GridItem from '../components/Item/Grid.js';
import ListItem from '../components/Item/List.js';

export default class Auction extends Component {
  static get propTypes() {
    return {
      changeFilter: PropTypes.func,
      fetchItems: PropTypes.func.isRequired,
      fetchStatus: PropTypes.func.isRequired,
      items: PropTypes.array,
    };
  }

  static get defaultProps() {
    return {
      changeFilter: () => { console.log('Change Filter Default Prop', arguments); },
      items: [],
    };
  }

  constructor(props) {
    super(props);

    this.changeFilter = this.changeFilter.bind(this);
    this.changeViewMode = this.changeViewMode.bind(this);

    this.state = {
      sort: SORT_MODES.TITLE_ASC,
      view: VIEW_MODES.LIST,
    };
  }

  componentDidMount() {
    this.props.fetchStatus();
    this.props.fetchItems();
  }

  changeFilter(filter) {
      this.props.changeFilter('auction', filter);
  }

  changeViewMode(mode) {
    this.setState({ view: mode });
  }

  _keyExtractor = (item, index) => `${item._id}_${index}`;

  _renderItem = (view) => ({ item }) => {
    console.log('_renderItem', item);
    if (view === VIEW_MODES.GRID) {
      return <GridItem {...item} />;
    }

    return <ListItem {...item} />;
  }

  render() {
    const { items } = this.props;
    const { sort, view } = this.state;

    return (
      <View style={styles.container}>
        <FilterBar
          changeFilterer={this.changeFilter}
          changeViewMode={this.changeViewMode}
        />
        {items.size > 0 && (
          <FlatList
            data={items}
            keyExtractor={this._keyExtractor}
            renderItem={this._renderItem(view)}
            contentContainerStyle={styles.itemListContentContainer}
            style={styles.itemList}
          />
        )}
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
  itemList: {
    width: '100%',
  },
  itemListContentContainer: {
    alignItems: 'stretch',
    justifyContent: 'flex-start',
  },
});