'use strict';
'require view';
'require form';
'require uci';
'require fs';

function requireWhenSelfhosted(o, is_file) {
	o.rmempty = true;
	if (is_file) {
		var baseParse = o.parse;
		o.parse = function (section_id) {
			if (this.section.formvalue(section_id, 'mode') === 'selfhosted') {
				var fval = this.formvalue(section_id);
				if (fval == null || fval === '')
					return Promise.reject(new TypeError(
						_('This field is required in Self-hosted mode.')));
			}
			return baseParse.apply(this, arguments);
		};
	} else {
		o.validate = function (section_id, value) {
			if (this.section.formvalue(section_id, 'mode') !== 'selfhosted')
				return true;
			if (value == null || value === '')
				return _('This field is required in Self-hosted mode.');
			return true;
		};
	}
}

return view.extend({
	load: function () {
		return Promise.all([
			uci.load('rms'),
			L.resolveDefault(fs.read('/tmp/rms/device_id'), '')
		]);
	},

	render: function (data) {
		var m, s, o;
		var deviceId = ((data && data[1]) || '').trim() || '—';

		m = new form.Map(
			'rms',
			_('TELEOFIS: Remote Monitoring System'),
			_('Connect to the centralized TELEOFIS platform for monitoring and remote device management.')
		);

		s = m.section(form.NamedSection, 'main', 'rms');
		s.anonymous = true;

		o = s.option(form.DummyValue, 'device_id', _('Device ID'));
		o.rawhtml = false;
		o.cfgvalue = function () { return deviceId; };

		o = s.option(form.Flag, 'enabled', _('Enable'));
		o.default = '0';
		o.rmempty = false;

		o = s.option(form.ListValue, 'mode', _('Connection mode'), _('Connect to the cloud service or to a management platform hosted on your organization\'s servers.'));
		o.value('cloud', _('Cloud'));
		o.value('selfhosted', _('Self-hosted'));
		o.default = 'cloud';
		o.forcewrite = true;

		o = s.option(form.Value, 'server', _('Address'), _('Remote host or IP address'));
		o.depends('mode', 'selfhosted');
		o.datatype = 'host';
		requireWhenSelfhosted(o);

		o = s.option(form.Value, 'port', _('Port'));
		o.depends('mode', 'selfhosted');
		o.datatype = 'range(1024,65535)';
		o.placeholder = '8883';
		requireWhenSelfhosted(o);

		o = s.option(form.FileUpload, 'sh_ca_cert', _('CA certificate'), _('Root certificate of the management platform. Generated by the self-hosted platform during its deployment.'));
		o.depends('mode', 'selfhosted');
		o.root_directory = '/etc/rms/certs/selfhosted';
		o.enable_upload = true;
		o.enable_remove = true;
		requireWhenSelfhosted(o, true);

		o = s.option(form.FileUpload, 'sh_bootstrap_cert', _('Bootstrap CRT'), _('Certificate for initial device authentication on the management platform. Generated by the self-hosted platform during its deployment.'));
		o.depends('mode', 'selfhosted');
		o.root_directory = '/etc/rms/certs/selfhosted';
		o.enable_upload = true;
		o.enable_remove = true;
		requireWhenSelfhosted(o, true);

		o = s.option(form.FileUpload, 'sh_bootstrap_key', _('Bootstrap KEY'), _('Private key for initial device authentication on the management platform. Generated by the self-hosted platform during its deployment.'));
		o.depends('mode', 'selfhosted');
		o.root_directory = '/etc/rms/certs/selfhosted';
		o.enable_upload = true;
		o.enable_remove = true;
		requireWhenSelfhosted(o, true);

		o = s.option(form.Value, 'interval', _('Telemetry interval, s'), _('Interval at which the device sends status data to the server. Range: 300 to 3600 s.'));
		o.datatype = 'range(300,3600)';
		o.default = '300';
		o.placeholder = '300';
		o.rmempty = false;

		o = s.option(form.Value, 'keepalive', _('Keepalive interval, s'), _('Interval at which the device reports to the server that it is online and the connection is active. Range: 60 to 3600 s.'));
		o.datatype = 'range(60,3600)';
		o.default = '60';
		o.placeholder = '60';
		o.rmempty = false;

		return m.render();
	}
});