@bigfishtv/cockpit/src/reducers/imageFilterPresets.js

/**
 * @module Reducers/imageFilterPresets
 */

import {
	IMAGE_FILTER_PRESET_ADDED,
	IMAGE_FILTER_PRESETS_ADDED,
	IMAGE_FILTER_PRESET_REMOVED,
	IMAGE_FILTER_PRESETS_REMOVED,
} from '../constants/ActionTypes'

const initialState = []

/**
 * Reducer for managing image editing filter presets
 * @param  {Object} state
 * @param  {Object} action
 * @param  {String} action.type - const action type from constants/ActionTypes
 * @return {Object} returns state
 */
export default function(state = initialState, action) {
	switch (action.type) {
		case IMAGE_FILTER_PRESET_ADDED:
			if (!state.filter(preset => preset.title == action.preset.title).length) {
				state.push(action.preset)
			}
			return state

		case IMAGE_FILTER_PRESETS_ADDED:
			for (let preset of action.presets) {
				if (!state.filter(_preset => _preset.title == preset.title).length) {
					state.push(preset)
				}
			}
			return state

		case IMAGE_FILTER_PRESET_REMOVED:
			return state.filter(preset => preset.title != action.presetTitle)

		case IMAGE_FILTER_PRESETS_REMOVED:
			return state.filter(preset => action.presetTitles.indexOf(preset.title) < 0)
	}
	return state
}