'use strict';
'require form';
'require poll';
'require rpc';
'require uci';
'require view';

var callServiceList = rpc.declare({
	object: 'service',
	method: 'list',
	params: ['name'],
	expect: { '': {} }
});

var callExec = rpc.declare({
	object: 'file',
	method: 'exec',
	params: ['command', 'params'],
	expect: {}
});

function getServiceStatus() {
	return L.resolveDefault(callServiceList('airplay2'), {}).then(function (res) {
		var isRunning = false;
		try {
			isRunning = res['airplay2']['instances']['instance1']['running'];
		} catch (e) { }
		return isRunning;
	});
}

function renderStatus(isRunning) {
	var spanTemp = '<em><span style="color:%s"><strong>%s %s</strong></span></em>';
	var renderHTML;
	if (isRunning) {
		renderHTML = spanTemp.format('green', 'Airplay2', _('RUNNING'));
	} else {
		renderHTML = spanTemp.format('red', 'Airplay2', _('NOT RUNNING'));
	}
	return renderHTML;
}

function getSoundCards() {
	return callExec('/bin/cat', ['/proc/asound/cards']).then(function (res) {
		var content = res && typeof res.stdout === 'string' ? res.stdout : '';
		var cards = [];
		if (content) {
			var lines = content.split('\n');
			lines.forEach(function (line) {
				var match = line.match(/^\s*(\d+)\s+\[[^\]]+\]:\s*(.+)$/);
				if (match) {
					cards.push({
						id: match[1],
						desc: match[2]
					});
				}
			});
		}
		return cards;
	}).catch(function (e) {
		return [];
	});
}

return view.extend({
	render: function () {
		return getSoundCards().then(function (cards) {
			var m = new form.Map('airplay2', _('Airplay 2'),
				_('AirPlay 2 is a simple and easy-to-use AirPlay audio player.'));

			var s = m.section(form.TypedSection);
			s.anonymous = true;
			s.render = function () {
				poll.add(function () {
					return L.resolveDefault(getServiceStatus()).then(function (res) {
						var view = document.getElementById('service_status');
						view.innerHTML = renderStatus(res);
					});
				});
				return E('div', { class: 'cbi-section', id: 'status_bar' }, [
					E('p', { id: 'service_status' }, _('Collecting data...'))
				]);
			};

			s = m.section(form.NamedSection, '@airplay2[0]', 'airplay2');
			s.anonymous = true;

			var o;

			o = s.option(form.Flag, 'enabled', _('Enabled'));
			o.rmempty = false;

			o = s.option(form.Value, 'name', _('Airplay Name'));
			o.rmempty = false;

			o = s.option(form.ListValue, 'interpolation', _('Interpolation'));
			o.default = 'basic';
			o.value('basic', _('Internal Basic Resampler'));
			o.value('soxr', _('High quality SoX Resampler'));

			o = s.option(form.Value, 'port', _('Port'));
			o.default = '5050';
			o.datatype = 'port';

			var soundcardOpt = s.option(form.ListValue, 'alsa_output_device', _('Alsa Output Device'));
			soundcardOpt.default = '';
			soundcardOpt.value('', _('default'));
			if (Array.isArray(cards)) {
				cards.forEach(function (card) {
					soundcardOpt.value('hw:' + card.id, card.desc + ' (hw:' + card.id + ')');
				});
			}

			o = s.option(form.ListValue, 'alsa_mixer_control_name', _('Alsa Mixer Control Name'));
			o.default = '';
			o.value('', _('default (software volume)'));
			o.value('PCM', _('PCM'));
			o.value('Speaker', _('Speaker'));

			o = s.option(form.ListValue, 'alsa_output_rate', _('Alsa Output Rate'));
			o.default = 'auto';
			o.value('auto', _('auto'));
			o.value('44100', _('44.1kHz'));
			o.value('88200', _('88.2kHz'));
			o.value('176400', _('176.4kHz'));
			o.value('352800', _('352.8kHz'));

			o = s.option(form.Value, 'alsa_buffer_length', _('Alsa Buffer Length'));
			o.default = '6615';

			o = s.option(form.Value, 'sesctl_session_timeout', _('Session timeout'));
			o.default = '120';

			o = s.option(form.ListValue, 'sesctl_session_interruption', _('Allow session interruption'));
			o.default = 'no';
			o.value('no', _('Not allow'));
			o.value('yes', _('Allow'));

			return m.render();
		});
	}
});