<?php

namespace XcVm\Public\Controllers\Admin;

use XcVm\Core\Config\SettingsManager;
use XcVm\Core\Http\Response;
use XcVm\Domain\Stream\StreamConfigRepository;

/**
 * SettingsController — General Settings (admin/settings.php).
 *
 * GET /settings
 * Massive multi-tab form with ~80+ switchery toggles, select2 dropdowns,
 * 9 tabs (General, Security, API, Streaming, MAG, Web Player, Logs, Info, Database).
 *
 * @renders Views/admin/settings.php
 *
 * @package XC_VM_Public_Controllers_Admin
 * @author  Divarion_D <https://github.com/Divarion-D>
 * @copyright 2025-2026 Vateron Media
 * @link    https://github.com/Vateron-Media/XC_VM
 * @license AGPL-3.0 https://www.gnu.org/licenses/agpl-3.0.html
 */

class SettingsController extends BaseAdminController {
	public function index(): void {
		$this->requirePermission();
		Response::noCache();

		$rSettings = SettingsManager::getAll();
		$rStreamArguments = StreamConfigRepository::getStreamArguments();

		$versionData = json_decode(@file_get_contents(BIN_PATH . 'maxmind/version.json'), true) ?: [];
		$GeoLite2 = $versionData['geolite2_version'] ?? 'N/A';
		$GeoISP   = $versionData['geoisp_version'] ?? 'N/A';
		$Nginx    = trim(shell_exec(BIN_PATH . 'nginx/sbin/nginx -v 2>&1 | cut -d\'/\' -f2') ?: '');
		$rUpdate  = json_decode((string) ($rSettings['update_data'] ?? ''), true) ?: [];

		$binVersionData = json_decode(@file_get_contents(BIN_PATH . 'bin_version.json'), true) ?: [];
		$BinVersion = $binVersionData['release'] ?? 'N/A';
		$BinOS = $this->resolveOsLabel($binVersionData);

		// xc_fanout daemon (`-version`), xcvm_core extension marker and yt-dlp — Info tab.
		$rFanoutBin = BIN_PATH . 'xc_fanout/xc_fanout';
		$FanoutVersion = (is_file($rFanoutBin) && is_executable($rFanoutBin))
			? (ltrim(trim((string) shell_exec(escapeshellarg($rFanoutBin) . ' -version 2>/dev/null')), 'vV') ?: 'N/A')
			: 'N/A';

		$rCoreVerFile = rtrim((string) ini_get('extension_dir'), '/') . '/xcvm_core.version';
		$XcvmCoreVersion = is_file($rCoreVerFile)
			? (trim((string) file_get_contents($rCoreVerFile)) ?: 'N/A')
			: (extension_loaded('xcvm_core') ? (phpversion('xcvm_core') ?: 'N/A') : 'N/A');

		$YtDlpVersion = (is_file(YOUTUBE_BIN) && is_executable(YOUTUBE_BIN))
			? (trim((string) shell_exec(escapeshellarg(YOUTUBE_BIN) . ' --version 2>/dev/null')) ?: 'N/A')
			: 'N/A';

		$this->setTitle('Settings');
		$this->render('settings', ['rSettings' => $rSettings, 'rStreamArguments' => $rStreamArguments, 'GeoLite2' => $GeoLite2, 'GeoISP' => $GeoISP, 'Nginx' => $Nginx, 'BinVersion' => $BinVersion, 'BinOS' => $BinOS, 'rUpdate' => $rUpdate, 'FanoutVersion' => $FanoutVersion, 'XcvmCoreVersion' => $XcvmCoreVersion, 'YtDlpVersion' => $YtDlpVersion]);
	}

	/**
	 * Build the OS label for the Versions tab.
	 *
	 * Prefers the distribution recorded in bin_version.json (set by
	 * update_binaries.sh). When that metadata is missing or still holds the
	 * seed "unknown" placeholder, falls back to the running host's
	 * /etc/os-release so the tab never shows "unknown unknown".
	 *
	 * @param array<string,mixed> $binVersionData
	 */
	private function resolveOsLabel(array $binVersionData): string {
		$dist    = trim((string) ($binVersionData['distribution'] ?? ''));
		$version = trim((string) ($binVersionData['distribution_version'] ?? ''));

		if ($dist !== '' && strcasecmp($dist, 'unknown') !== 0) {
			return ucfirst($dist) . ($version !== '' && strcasecmp($version, 'unknown') !== 0 ? ' ' . $version : '');
		}

		$osRelease = @parse_ini_file('/etc/os-release');
		if (is_array($osRelease)) {
			if (!empty($osRelease['PRETTY_NAME'])) {
				return (string) $osRelease['PRETTY_NAME'];
			}
			$label = trim(($osRelease['NAME'] ?? '') . ' ' . ($osRelease['VERSION_ID'] ?? ''));
			if ($label !== '') {
				return $label;
			}
		}

		return 'N/A';
	}
}