import _ from 'lodash';
import { connect } from 'react-redux';
import { createSelector } from 'reselect';
import ImportSeriesFooter from './ImportSeriesFooter';

function isMixed(items, selectedIds, defaultValue, key) {
  return _.some(items, (series) => {
    return selectedIds.indexOf(series.id) > -1 && series[key] !== defaultValue;
  });
}

function createMapStateToProps() {
  return createSelector(
    (state) => state.addSeries,
    (state) => state.importSeries,
    (state, { selectedIds }) => selectedIds,
    (addSeries, importSeries, selectedIds) => {
      const {
        monitor: defaultMonitor,
        qualityProfileId: defaultQualityProfileId,
        languageProfileId: defaultLanguageProfileId,
        seriesType: defaultSeriesType,
        seasonFolder: defaultSeasonFolder
      } = addSeries.defaults;

      const items = importSeries.items;

      const isLookingUpSeries = _.some(importSeries.items, (series) => {
        return !series.isPopulated && series.error == null;
      });

      const isMonitorMixed = isMixed(items, selectedIds, defaultMonitor, 'monitor');
      const isQualityProfileIdMixed = isMixed(items, selectedIds, defaultQualityProfileId, 'qualityProfileId');
      const isLanguageProfileIdMixed = isMixed(items, selectedIds, defaultLanguageProfileId, 'languageProfileId');
      const isSeriesTypeMixed = isMixed(items, selectedIds, defaultSeriesType, 'seriesType');
      const isSeasonFolderMixed = isMixed(items, selectedIds, defaultSeasonFolder, 'seasonFolder');

      return {
        selectedCount: selectedIds.length,
        isImporting: importSeries.isImporting,
        isLookingUpSeries,
        defaultMonitor,
        defaultQualityProfileId,
        defaultLanguageProfileId,
        defaultSeriesType,
        defaultSeasonFolder,
        isMonitorMixed,
        isQualityProfileIdMixed,
        isLanguageProfileIdMixed,
        isSeriesTypeMixed,
        isSeasonFolderMixed
      };
    }
  );
}

export default connect(createMapStateToProps)(ImportSeriesFooter);