<?php declare(strict_types = 0);
/*
** WeCom Center - GET controller. Gathers current state and renders the page.
*/

namespace Modules\WecomCenter\Actions;

use CController;
use CControllerResponseData;
use CWebUser;
use Modules\WecomCenter\Lib\Helper;
use Modules\WecomCenter\Lib\I18n;
use Modules\WecomCenter\Lib\L2Store;

class WecomCenterView extends CController {

	protected function init() {
		$this->disableCsrfValidation();
	}

	protected function checkInput() {
		return true;
	}

	protected function checkPermissions() {
		return CWebUser::getType() == USER_TYPE_SUPER_ADMIN;
	}

	protected function doAction() {
		$module_dir = dirname(__DIR__);

		$mediatypes = Helper::webhookMediatypes();

		$mediatypeid = (string) ($_REQUEST['mediatypeid'] ?? '');
		if ($mediatypeid === '' && $mediatypes) {
			foreach ($mediatypes as $mt) {
				if (stripos($mt['name'], 'wecom') !== false) {
					$mediatypeid = (string) $mt['mediatypeid'];
					break;
				}
			}
			if ($mediatypeid === '') {
				$mediatypeid = (string) $mediatypes[0]['mediatypeid'];
			}
		}

		$mediatype = null;
		$webhook_url = '';
		$media = null;
		if ($mediatypeid !== '') {
			$mediatype = Helper::getMediatype($mediatypeid);
			if ($mediatype) {
				$webhook_url = Helper::webhookKey($mediatype);
			}
			$robot = Helper::robotUser('wecomrobot');
			$media = Helper::currentMedia($robot, $mediatypeid);
		}

		// ---- alert strategy ----
		$template_hostid = Helper::templateHostid();
		$current_strategy = Helper::currentStrategy();

		$preview = null;
		$preview_key = (string) ($_REQUEST['preview_preset'] ?? '');
		if ($preview_key !== '' && isset(Helper::STRATEGY_PRESETS[$preview_key]) && $template_hostid !== null) {
			$preview = Helper::previewStrategy($template_hostid,
				Helper::STRATEGY_PRESETS[$preview_key]['targets']);
		}

		// ---- server tuning generator ----
		$tuning_profile = (string) ($_REQUEST['tuning_profile'] ?? 'medium');
		if (!isset(Helper::TUNING_PROFILES[$tuning_profile])) {
			$tuning_profile = 'medium';
		}
		$tuning = Helper::tuningSnippet($tuning_profile);

		// ---- map: single marker = Zabbix server host ----
		$server_host = null;		$server_loc = ['location_lat' => '', 'location_lon' => ''];
		try {
			$sh = \API::Host()->get([
				'output'          => ['hostid', 'name'],
				'filter'          => ['host' => 'Zabbix server'],
				'selectInventory' => ['location_lat', 'location_lon'],
				'limit'           => 1
			]);
			if ($sh) {
				$server_host = $sh[0];
				$server_loc = [
					'location_lat' => $sh[0]['inventory']['location_lat'] ?? '',
					'location_lon' => $sh[0]['inventory']['location_lon'] ?? ''
				];
			}
		}
		catch (\Throwable $e) { /* ignore */ }

		// ---- maintenance: per-trigger alerting switch ----
		$trig_search = trim((string) ($_REQUEST['trig_search'] ?? ''));
		$triggers = Helper::triggers($trig_search);
		$trigger_count = Helper::triggerCount();

		// ---- template switch / migration ----
		$huawei_tpls = Helper::huaweiTemplates();
		$switch_src = (string) ($_REQUEST['switch_src'] ?? '');
		$switch_dst = (string) ($_REQUEST['switch_dst'] ?? '');
		$switch_preview = null;
		if ($switch_src !== '' && $switch_dst !== '' && $switch_src !== $switch_dst) {
			$switch_preview = Helper::switchPreview($switch_src, $switch_dst);
		}

		// ---- L2 topology configuration ----
		L2Store::ensureSchema();
		$l2 = L2Store::getConfig();
		$l2_templates = [];
		try {
			$tpls = \API::Template()->get(['output' => ['templateid', 'name'], 'sortfield' => 'name']);
			foreach ($tpls as $tp) {
				$l2_templates[] = $tp['name'];
			}
		}
		catch (\Throwable $e) { /* ignore */ }

		$data = [
			'title'           => I18n::t('page.title'),
			'l2'              => $l2,
			'l2_templates'    => $l2_templates,
			'mediatypes'      => $mediatypes,
			'mediatypeid'     => $mediatypeid,
			'mediatype'       => $mediatype,
			'webhook_url'     => $webhook_url,
			'media'           => $media,
			'severity'        => $media['severity'] ?? 48,
			'active'          => $media['active'] ?? 0,
			'presets'         => Helper::STRATEGY_PRESETS,
			'classes'         => Helper::CLASSES,
			'current_strategy'=> $current_strategy,
			'template_hostid' => $template_hostid,
			'preview_key'     => $preview_key,
			'preview'         => $preview,
			'tuning_profile'  => $tuning_profile,
			'tuning'          => $tuning,
			'tuning_profiles' => Helper::TUNING_PROFILES,
			'templates'       => Helper::bundledTemplates($module_dir),
			'server_host'     => $server_host,
			'server_loc'      => $server_loc,
			'trig_search'     => $trig_search,
			'triggers'        => $triggers,
			'trigger_count'   => $trigger_count,
			'huawei_tpls'     => $huawei_tpls,
			'switch_src'      => $switch_src,
			'switch_dst'      => $switch_dst,
			'switch_preview'  => $switch_preview,
			'lang'            => I18n::lang()
		];

		$response = new CControllerResponseData($data);
		$response->setTitle(I18n::t('page.title'));
		$this->setResponse($response);
	}
}