<?php
/**
 * Shared Help & Support workspace powered by tawk.to.
 *
 * @package DiviPowers
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

final class Divi_Powers_Support {
	private const PAGE_SLUG     = 'divi-powers-support';
	private const LEGACY_SLUG   = 'divi-powers-beta-resources';
	private const LEGACY_OPTION_KEY = 'divi_powers_support_settings';

	/** @var Divi_Powers_Plugin */
	private $plugin;

	public function __construct( Divi_Powers_Plugin $plugin ) {
		$this->plugin = $plugin;
	}

	public function register() {
		add_action( 'admin_menu', array( $this, 'add_menu' ), 35 );
		add_action( 'admin_init', array( $this, 'remove_legacy_customer_settings' ) );
		add_action( 'admin_init', array( $this, 'maybe_redirect_legacy_page' ), 20 );
		add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_assets' ), 120 );

		add_filter( 'divi_powers_product_nav_links', array( $this, 'navigation_links' ), 35 );
		add_filter( 'divi_powers_submenu_order', array( $this, 'submenu_order' ), 35 );
		add_filter( 'divi_powers_dashboard_cards', array( $this, 'dashboard_cards' ), 35, 2 );
		add_filter( 'plugin_row_meta', array( $this, 'plugin_row_meta' ), 35, 2 );
	}

	public function add_menu() {
		add_submenu_page(
			'divi-powers',
			__( '5D Powers for Divi Help & Support', '5d-powers-for-divi' ),
			__( 'Help & Support', '5d-powers-for-divi' ),
			'manage_options',
			self::PAGE_SLUG,
			array( $this, 'render_page' )
		);

		// Preserve the old Beta Resources URL without keeping a duplicate menu item.
		add_submenu_page(
			null,
			__( '5D Powers for Divi Help & Support', '5d-powers-for-divi' ),
			__( 'Help & Support', '5d-powers-for-divi' ),
			'manage_options',
			self::LEGACY_SLUG,
			array( $this, 'render_legacy_page' )
		);
	}

	public function remove_legacy_customer_settings() {
		if ( ! current_user_can( 'manage_options' ) ) {
			return;
		}

		if ( false !== get_option( self::LEGACY_OPTION_KEY, false ) ) {
			delete_option( self::LEGACY_OPTION_KEY );
		}
	}

	public function maybe_redirect_legacy_page() {
		if ( ! is_admin() || ! current_user_can( 'manage_options' ) ) {
			return;
		}

		$page = isset( $_GET['page'] ) ? sanitize_key( wp_unslash( $_GET['page'] ) ) : ''; // phpcs:ignore WordPress.Security.NonceVerification.Recommended
		if ( self::LEGACY_SLUG !== $page ) {
			return;
		}

		wp_safe_redirect( admin_url( 'admin.php?page=' . self::PAGE_SLUG ) );
		exit;
	}

	public function render_legacy_page() {
		wp_safe_redirect( admin_url( 'admin.php?page=' . self::PAGE_SLUG ) );
		exit;
	}

	public function enqueue_assets() {
		$page = isset( $_GET['page'] ) ? sanitize_key( wp_unslash( $_GET['page'] ) ) : ''; // phpcs:ignore WordPress.Security.NonceVerification.Recommended
		if ( self::PAGE_SLUG !== $page ) {
			return;
		}

		wp_enqueue_style(
			'divi-powers-support',
			DIVI_POWERS_URL . 'assets/css/support.css',
			array( 'divi-powers-admin', 'divi-powers-product-experience' ),
			DIVI_POWERS_VERSION
		);

		wp_enqueue_script(
			'divi-powers-support',
			DIVI_POWERS_URL . 'assets/js/support.js',
			array( 'wp-i18n' ),
			DIVI_POWERS_VERSION,
			true
		);
		wp_set_script_translations( 'divi-powers-support', '5d-powers-for-divi' );

		$settings = $this->settings();
		$context  = $this->support_context();
		$edition  = $this->edition_slug();

		wp_localize_script(
			'divi-powers-support',
			'DiviPowersSupport',
			array(
				'widgetEnabled' => ! empty( $settings['enable_admin_widget'] ) && ! empty( $settings['tawk_property_id'] ),
				'propertyId'    => $settings['tawk_property_id'],
				'widgetId'      => $settings['tawk_widget_id'] ? $settings['tawk_widget_id'] : 'default',
				'directChatUrl' => $settings['direct_chat_url'],
				'knowledgeBaseUrl' => $settings['knowledge_base_url'],
				'attributes'    => $context,
				'tags'          => array_values( array_unique( array( 'divi-powers', $edition, 'wordpress-admin', 'support' ) ) ),
				'filename'      => 'divi-powers-support-report-' . gmdate( 'Y-m-d' ) . '.txt',
				'strings'       => array(
					'copied'       => __( 'Copied', '5d-powers-for-divi' ),
					'copyFailed'   => __( 'Select and copy the report manually.', '5d-powers-for-divi' ),
					'opening'      => __( 'Opening support chat…', '5d-powers-for-divi' ),
					'chatFailed'   => __( 'The embedded chat could not load. Opening the direct chat link instead.', '5d-powers-for-divi' ),
					'chatMissing'  => __( 'Support chat is temporarily unavailable.', '5d-powers-for-divi' ),
					'reportReady'  => __( 'The report is copied. Paste it into the support chat when requested.', '5d-powers-for-divi' ),
				),
			)
		);
	}

	public function navigation_links( $links ) {
		$links = is_array( $links ) ? $links : array();
		$out   = array();
		$added = false;

		foreach ( $links as $slug => $label ) {
			if ( ! $added && 'divi-powers-upgrade' === $slug ) {
				$out[ self::PAGE_SLUG ] = __( 'Help & Support', '5d-powers-for-divi' );
				$added = true;
			}
			$out[ $slug ] = $label;
		}

		if ( ! $added ) {
			$out[ self::PAGE_SLUG ] = __( 'Help & Support', '5d-powers-for-divi' );
		}

		return $out;
	}

	public function submenu_order( $order ) {
		$order = is_array( $order ) ? $order : array();
		$order[ self::PAGE_SLUG ] = 90;
		return $order;
	}

	public function dashboard_cards( $cards, $setup ) {
		unset( $setup );
		$cards = is_array( $cards ) ? $cards : array();

		$card = array(
			'number'      => (string) ( count( $cards ) + 1 ),
			'title'       => __( 'Get help without leaving WordPress', '5d-powers-for-divi' ),
			'description' => __( 'Search the knowledge base, open support chat, submit a ticket, or copy a privacy-conscious system report.', '5d-powers-for-divi' ),
			'url'         => admin_url( 'admin.php?page=' . self::PAGE_SLUG ),
			'link'        => __( 'Open Help & Support →', '5d-powers-for-divi' ),
			'class'       => 'is-support-card',
			'badge'       => __( 'SUPPORT', '5d-powers-for-divi' ),
			'badge_tone'  => 'lite',
		);

		$cards[] = $card;
		return $cards;
	}

	public function plugin_row_meta( $links, $file ) {
		if ( plugin_basename( DIVI_POWERS_FILE ) !== $file ) {
			return $links;
		}

		$settings = $this->settings();
		if ( ! empty( $settings['knowledge_base_url'] ) ) {
			$links[] = '<a href="' . esc_url( $settings['knowledge_base_url'] ) . '" target="_blank" rel="noopener noreferrer">' . esc_html__( 'Knowledge Base', '5d-powers-for-divi' ) . '</a>';
		}
		$links[] = '<a href="' . esc_url( admin_url( 'admin.php?page=' . self::PAGE_SLUG ) ) . '">' . esc_html__( 'Help & Support', '5d-powers-for-divi' ) . '</a>';

		return $links;
	}

	public function render_page() {
		if ( ! current_user_can( 'manage_options' ) ) {
			return;
		}

		$settings     = $this->settings();
		$snapshot     = $this->support_snapshot();
		$widget_ready = ! empty( $settings['enable_admin_widget'] ) && ! empty( $settings['tawk_property_id'] );
		$chat_ready   = $widget_ready || ! empty( $settings['direct_chat_url'] );
		?>
		<div class="wrap dp-support">
			<header class="divi-powers-hero dp-support__hero">
				<div>
					<span class="divi-powers-eyebrow"><?php esc_html_e( '5D POWERS FOR DIVI · CUSTOMER SUPPORT', '5d-powers-for-divi' ); ?></span>
					<h1><?php esc_html_e( 'Help & Support', '5d-powers-for-divi' ); ?></h1>
					<p><?php esc_html_e( 'Find an answer, start a conversation, or send the technical context needed to solve a problem faster.', '5d-powers-for-divi' ); ?></p>
				</div>
				<span class="divi-powers-version"><?php echo esc_html( Divi_Powers_Plugin::version_label() ); ?></span>
			</header>


			<section class="dp-support__actions" aria-label="<?php esc_attr_e( 'Support actions', '5d-powers-for-divi' ); ?>">
				<?php $this->render_action_card( '01', 'dashicons-book-alt', __( 'Search the knowledge base', '5d-powers-for-divi' ), __( 'Search setup, feature, and troubleshooting guides for 5D Powers for Divi.', '5d-powers-for-divi' ), $settings['knowledge_base_url'], __( 'Open knowledge base', '5d-powers-for-divi' ) ); ?>
				<?php $this->render_chat_card( $chat_ready, $widget_ready, $settings['direct_chat_url'] ); ?>
				<?php $this->render_action_card( '03', 'dashicons-sos', __( 'Submit a support ticket', '5d-powers-for-divi' ), __( 'Use a ticket for bugs, compatibility issues, billing questions, or anything that needs investigation and follow-up.', '5d-powers-for-divi' ), $settings['ticket_url'], __( 'Create support ticket', '5d-powers-for-divi' ) ); ?>
				<?php $this->render_action_card( '04', 'dashicons-megaphone', __( 'Share feedback', '5d-powers-for-divi' ), __( 'Tell us what feels confusing, what is missing, and what would make 5D Powers for Divi more useful in a real workflow.', '5d-powers-for-divi' ), $settings['feedback_url'], __( 'Send feedback', '5d-powers-for-divi' ) ); ?>
			</section>

			<section class="dp-support__diagnostics">
				<div class="dp-support__diagnostics-copy">
					<span><?php esc_html_e( 'SYSTEM REPORT', '5d-powers-for-divi' ); ?></span>
					<h2><?php esc_html_e( 'Give support the useful details—not your private data', '5d-powers-for-divi' ); ?></h2>
					<p><?php esc_html_e( 'This report is generated locally and is never sent automatically. It includes software versions, enabled Powers, server limits, and active plugin names. It excludes license keys, passwords, API secrets, form submissions, orders, customers, and page content.', '5d-powers-for-divi' ); ?></p>
					<div class="dp-support__diagnostic-actions">
						<button type="button" class="button button-primary" data-dp-copy-report><?php esc_html_e( 'Copy system report', '5d-powers-for-divi' ); ?></button>
						<button type="button" class="button" data-dp-download-report><?php esc_html_e( 'Download report', '5d-powers-for-divi' ); ?></button>
						<button type="button" class="button" data-dp-copy-open-chat <?php disabled( ! $chat_ready ); ?>><?php esc_html_e( 'Copy and open chat', '5d-powers-for-divi' ); ?></button>
					</div>
					<p class="dp-support__status" data-dp-support-status aria-live="polite"></p>
				</div>
				<textarea readonly rows="24" data-dp-support-report><?php echo esc_textarea( $snapshot ); ?></textarea>
			</section>

			<section class="dp-support__privacy">
				<span class="dashicons dashicons-shield-alt" aria-hidden="true"></span>
				<div>
					<h2><?php esc_html_e( 'Your information stays under your control', '5d-powers-for-divi' ); ?></h2>
					<p><?php esc_html_e( 'Nothing is sent automatically. The support widget loads only after you open chat, and the system report stays on this site until you copy, download, or paste it yourself.', '5d-powers-for-divi' ); ?></p>
				</div>
			</section>
		</div>
		<?php
	}

	private function render_action_card( $number, $icon, $title, $description, $url, $button ) {
		$ready = ! empty( $url );
		?>
		<article class="dp-support-card<?php echo $ready ? '' : ' is-disabled'; ?>">
			<div class="dp-support-card__top"><span><?php echo esc_html( $number ); ?></span><i class="dashicons <?php echo esc_attr( $icon ); ?>" aria-hidden="true"></i></div>
			<h2><?php echo esc_html( $title ); ?></h2>
			<p><?php echo esc_html( $description ); ?></p>
			<?php if ( $ready ) : ?>
				<a class="button" href="<?php echo esc_url( $url ); ?>" target="_blank" rel="noopener noreferrer"><?php echo esc_html( $button ); ?> →</a>
			<?php else : ?>
				<button type="button" class="button" disabled><?php esc_html_e( 'Temporarily unavailable', '5d-powers-for-divi' ); ?></button>
			<?php endif; ?>
		</article>
		<?php
	}

	private function render_chat_card( $chat_ready, $widget_ready, $direct_url ) {
		?>
		<article class="dp-support-card dp-support-card--chat<?php echo $chat_ready ? '' : ' is-disabled'; ?>">
			<div class="dp-support-card__top"><span>02</span><i class="dashicons dashicons-format-chat" aria-hidden="true"></i></div>
			<h2><?php esc_html_e( 'Chat with support', '5d-powers-for-divi' ); ?></h2>
			<p><?php esc_html_e( 'Start a live conversation or leave an offline message. 5D Powers for Divi adds the installed edition and software versions as support context.', '5d-powers-for-divi' ); ?></p>
			<?php if ( $widget_ready ) : ?>
				<button type="button" class="button button-primary" data-dp-open-chat><?php esc_html_e( 'Open support chat', '5d-powers-for-divi' ); ?> →</button>
			<?php elseif ( $direct_url ) : ?>
				<a class="button button-primary" href="<?php echo esc_url( $direct_url ); ?>" target="_blank" rel="noopener noreferrer"><?php esc_html_e( 'Open support chat', '5d-powers-for-divi' ); ?> →</a>
			<?php else : ?>
				<button type="button" class="button" disabled><?php esc_html_e( 'Temporarily unavailable', '5d-powers-for-divi' ); ?></button>
			<?php endif; ?>
		</article>
		<?php
	}

	private function settings() {
		// Support destinations are controlled by Divi Powers, never by customers.
		$data = self::defaults();

		$constant_map = array(
			'knowledge_base_url' => 'DIVI_POWERS_SUPPORT_KB_URL',
			'ticket_url'         => 'DIVI_POWERS_SUPPORT_TICKET_URL',
			'direct_chat_url'    => 'DIVI_POWERS_TAWK_DIRECT_CHAT_URL',
			'feedback_url'       => 'DIVI_POWERS_SUPPORT_FEEDBACK_URL',
			'tawk_property_id'   => 'DIVI_POWERS_TAWK_PROPERTY_ID',
			'tawk_widget_id'     => 'DIVI_POWERS_TAWK_WIDGET_ID',
		);

		foreach ( $constant_map as $key => $constant ) {
			if ( defined( $constant ) && constant( $constant ) ) {
				$data[ $key ] = (string) constant( $constant );
			}
		}
		if ( defined( 'DIVI_POWERS_TAWK_ADMIN_WIDGET' ) ) {
			$data['enable_admin_widget'] = DIVI_POWERS_TAWK_ADMIN_WIDGET ? 1 : 0;
		}

		return $data;
	}

	private static function defaults() {
		return array(
			'knowledge_base_url' => 'https://divipowers.com/docs/',
			'ticket_url'         => 'https://divipowers.com/support/',
			'direct_chat_url'    => '',
			'feedback_url'       => 'https://divipowers.com/beta-feedback/',
			'tawk_property_id'   => '',
			'tawk_widget_id'     => 'default',
			'enable_admin_widget'=> 0,
		);
	}

	private function edition_slug() {
		if ( Divi_Powers_Plugin::is_pro_active() ) {
			return 'pro';
		}
		if ( Divi_Powers_Plugin::is_plus_active() ) {
			return 'plus';
		}
		return 'lite';
	}

	private function support_context() {
		$theme        = wp_get_theme();
		$divi_theme   = wp_get_theme( 'Divi' );
		$site_host    = wp_parse_url( home_url( '/' ), PHP_URL_HOST );
		$divi_version = $divi_theme->exists() ? $divi_theme->get( 'Version' ) : '';

		return array(
			'product'           => 'Divi Powers',
			'edition'           => $this->edition_slug(),
			'lite-version'      => defined( 'DIVI_POWERS_VERSION' ) ? DIVI_POWERS_VERSION : '',
			'plus-version'      => defined( 'DIVI_POWERS_PLUS_VERSION' ) ? DIVI_POWERS_PLUS_VERSION : 'not-active',
			'pro-version'       => defined( 'DIVI_POWERS_PRO_VERSION' ) ? DIVI_POWERS_PRO_VERSION : 'not-active',
			'wordpress-version' => get_bloginfo( 'version' ),
			'php-version'       => PHP_VERSION,
			'divi-version'      => $divi_version ? $divi_version : 'not-detected',
			'woo-version'       => defined( 'WC_VERSION' ) ? WC_VERSION : 'not-active',
			'theme'             => trim( $theme->get( 'Name' ) . ' ' . $theme->get( 'Version' ) ),
			'site-host'         => $site_host ? $site_host : 'unknown',
			'current-screen'    => 'help-support',
		);
	}

	private function support_snapshot() {
		global $wpdb;

		if ( ! function_exists( 'get_plugins' ) ) {
			require_once ABSPATH . 'wp-admin/includes/plugin.php';
		}

		$theme        = wp_get_theme();
		$parent_theme = $theme->parent();
		$divi_theme   = wp_get_theme( 'Divi' );
		$setup        = class_exists( 'Divi_Powers_Onboarding' ) ? Divi_Powers_Onboarding::setup_summary() : array();
		$enabled      = $this->plugin->enabled_powers();
		$site_host    = wp_parse_url( home_url( '/' ), PHP_URL_HOST );
		$plugins      = $this->active_plugin_labels();
		sort( $enabled );
		sort( $plugins );

		$rows = array(
			'DIVI POWERS SUPPORT REPORT',
			'Generated: ' . gmdate( 'Y-m-d H:i:s' ) . ' UTC',
			'Site host: ' . ( $site_host ? $site_host : 'Unknown' ),
			'',
			'PRODUCT',
			'Divi Powers edition: ' . ucfirst( $this->edition_slug() ),
			'5D Powers for Divi Free: ' . ( defined( 'DIVI_POWERS_VERSION' ) ? DIVI_POWERS_VERSION : 'Not active' ),
			'Divi Powers Plus: ' . ( defined( 'DIVI_POWERS_PLUS_VERSION' ) ? DIVI_POWERS_PLUS_VERSION : 'Not active' ),
			'5D Powers for Divi Pro: ' . ( defined( 'DIVI_POWERS_PRO_VERSION' ) ? DIVI_POWERS_PRO_VERSION : 'Not active' ),
			'Enabled Powers: ' . ( $enabled ? implode( ', ', $enabled ) : 'None' ),
			'Starter page installed: ' . ( ! empty( $setup['starter_ok'] ) ? 'Yes' : 'No' ),
			'Starter page native: ' . ( ! empty( $setup['lite_demo_native'] ) || ! empty( $setup['pro_starter_native'] ) ? 'Yes' : 'No' ),
			'',
			'WORDPRESS',
			'WordPress: ' . get_bloginfo( 'version' ),
			'Locale: ' . get_locale(),
			'Multisite: ' . ( is_multisite() ? 'Yes' : 'No' ),
			'WP_DEBUG: ' . ( defined( 'WP_DEBUG' ) && WP_DEBUG ? 'On' : 'Off' ),
			'SCRIPT_DEBUG: ' . ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? 'On' : 'Off' ),
			'WordPress memory limit: ' . ( defined( 'WP_MEMORY_LIMIT' ) ? WP_MEMORY_LIMIT : 'Unknown' ),
			'WordPress max memory limit: ' . ( defined( 'WP_MAX_MEMORY_LIMIT' ) ? WP_MAX_MEMORY_LIMIT : 'Unknown' ),
			'',
			'ENVIRONMENT',
			'PHP: ' . PHP_VERSION,
			'Database: ' . ( is_object( $wpdb ) && method_exists( $wpdb, 'db_version' ) ? $wpdb->db_version() : 'Unknown' ),
			'Web server: ' . ( isset( $_SERVER['SERVER_SOFTWARE'] ) ? sanitize_text_field( wp_unslash( $_SERVER['SERVER_SOFTWARE'] ) ) : 'Unknown' ),
			'PHP memory_limit: ' . (string) ini_get( 'memory_limit' ),
			'PHP max_execution_time: ' . (string) ini_get( 'max_execution_time' ),
			'PHP max_input_vars: ' . (string) ini_get( 'max_input_vars' ),
			'PHP post_max_size: ' . (string) ini_get( 'post_max_size' ),
			'PHP upload_max_filesize: ' . (string) ini_get( 'upload_max_filesize' ),
			'',
			'THEME & BUILDER',
			'Active theme: ' . trim( $theme->get( 'Name' ) . ' ' . $theme->get( 'Version' ) ),
			'Parent theme: ' . ( $parent_theme ? trim( $parent_theme->get( 'Name' ) . ' ' . $parent_theme->get( 'Version' ) ) : 'None' ),
			'Divi theme: ' . ( $divi_theme->exists() ? $divi_theme->get( 'Version' ) : 'Not detected' ),
			'Divi detected: ' . ( function_exists( 'et_builder_d5_enabled' ) ? 'Yes' : 'No' ),
			'Divi 5 enabled: ' . ( function_exists( 'et_builder_d5_enabled' ) && et_builder_d5_enabled() ? 'Yes' : 'No' ),
			'Divi Builder extension API: ' . ( class_exists( '\\ET\\Builder\\VisualBuilder\\Assets\\PackageBuildManager' ) ? 'Available' : 'Not detected' ),
			'WooCommerce: ' . ( defined( 'WC_VERSION' ) ? WC_VERSION : 'Not active' ),
			'',
			'ACTIVE PLUGINS (' . count( $plugins ) . ')',
		);

		foreach ( $plugins as $plugin ) {
			$rows[] = '- ' . $plugin;
		}

		$rows[] = '';
		$rows[] = 'BROWSER';
		$rows[] = 'User agent: [added locally by the Help & Support screen]';
		$rows[] = '';
		$rows[] = 'PRIVACY';
		$rows[] = 'This report excludes license keys, passwords, API secrets, authentication cookies, customer records, orders, form submissions, page content, and database credentials.';

		return implode( "\n", $rows );
	}

	private function active_plugin_labels() {
		$all_plugins = get_plugins();
		$active      = array_flip( (array) get_option( 'active_plugins', array() ) );
		$network     = is_multisite() ? (array) get_site_option( 'active_sitewide_plugins', array() ) : array();
		$labels      = array();

		foreach ( $all_plugins as $file => $data ) {
			if ( ! isset( $active[ $file ] ) && ! isset( $network[ $file ] ) ) {
				continue;
			}
			$name    = isset( $data['Name'] ) ? wp_strip_all_tags( $data['Name'] ) : $file;
			$version = isset( $data['Version'] ) ? wp_strip_all_tags( $data['Version'] ) : '';
			$labels[] = trim( $name . ' ' . $version ) . ( isset( $network[ $file ] ) ? ' [Network active]' : '' );
		}

		return $labels;
	}
}