import _ from '_';
import ko from 'ko';

import {trim, createCommand} from 'Common/Utils';
import {i18n, trigger as translatorTrigger} from 'Common/Translator';
import {searchSubtractFormatDateHelper} from 'Common/Momentor';

import MessageStore from 'Stores/User/Message';

import {view, ViewType} from 'Knoin/Knoin';
import {AbstractViewNext} from 'Knoin/AbstractViewNext';

@view({
	name: 'View/Popup/AdvancedSearch',
	type: ViewType.Popup,
	templateID: 'PopupsAdvancedSearch'
})
class AdvancedSearchPopupView extends AbstractViewNext
{
	constructor() {
		super();

		this.fromFocus = ko.observable(false);

		this.from = ko.observable('');
		this.to = ko.observable('');
		this.subject = ko.observable('');
		this.text = ko.observable('');
		this.selectedDateValue = ko.observable(-1);

		this.hasAttachment = ko.observable(false);
		this.starred = ko.observable(false);
		this.unseen = ko.observable(false);

		this.searchCommand = createCommand(() => {
			const search = this.buildSearchString();
			if ('' !== search)
			{
				MessageStore.mainMessageListSearch(search);
			}

			this.cancelCommand();
		});

		this.selectedDates = ko.computed(() => {
			translatorTrigger();
			return [
				{id: -1, name: i18n('SEARCH/LABEL_ADV_DATE_ALL')},
				{id: 3, name: i18n('SEARCH/LABEL_ADV_DATE_3_DAYS')},
				{id: 7, name: i18n('SEARCH/LABEL_ADV_DATE_7_DAYS')},
				{id: 30, name: i18n('SEARCH/LABEL_ADV_DATE_MONTH')},
				{id: 90, name: i18n('SEARCH/LABEL_ADV_DATE_3_MONTHS')},
				{id: 180, name: i18n('SEARCH/LABEL_ADV_DATE_6_MONTHS')},
				{id: 365, name: i18n('SEARCH/LABEL_ADV_DATE_YEAR')}
			];
		});
	}

	parseSearchStringValue(search) {
		const parts = (search || '').split(/[\s]+/g);
		_.each(parts, (part) => {
			switch (part)
			{
				case 'has:attachment':
					this.hasAttachment(true);
					break;
				case 'is:unseen,flagged':
					this.starred(true);
					/* falls through */
				case 'is:unseen':
					this.unseen(true);
					break;
				// no default
			}
		});
	}

	buildSearchStringValue(value) {
		if (-1 < value.indexOf(' '))
		{
			value = '"' + value + '"';
		}
		return value;
	}

	buildSearchString() {
		const
			result = [],
			from_ = trim(this.from()),
			to = trim(this.to()),
			subject = trim(this.subject()),
			text = trim(this.text()),
			isPart = [],
			hasPart = [];

		if (from_ && '' !== from_)
		{
			result.push('from:' + this.buildSearchStringValue(from_));
		}

		if (to && '' !== to)
		{
			result.push('to:' + this.buildSearchStringValue(to));
		}

		if (subject && '' !== subject)
		{
			result.push('subject:' + this.buildSearchStringValue(subject));
		}

		if (this.hasAttachment())
		{
			hasPart.push('attachment');
		}

		if (this.unseen())
		{
			isPart.push('unseen');
		}

		if (this.starred())
		{
			isPart.push('flagged');
		}

		if (0 < hasPart.length)
		{
			result.push('has:' + hasPart.join(','));
		}

		if (0 < isPart.length)
		{
			result.push('is:' + isPart.join(','));
		}

		if (-1 < this.selectedDateValue())
		{
			result.push('date:' + searchSubtractFormatDateHelper(this.selectedDateValue()) + '/');
		}

		if (text && '' !== text)
		{
			result.push('text:' + this.buildSearchStringValue(text));
		}

		return trim(result.join(' '));
	}

	clearPopup() {
		this.from('');
		this.to('');
		this.subject('');
		this.text('');

		this.selectedDateValue(-1);
		this.hasAttachment(false);
		this.starred(false);
		this.unseen(false);

		this.fromFocus(true);
	}

	onShow(search) {
		this.clearPopup();
		this.parseSearchStringValue(search);
	}

	onShowWithDelay() {
		this.fromFocus(true);
	}
}

module.exports = AdvancedSearchPopupView;