<?php
/**
 * Render Frontend Shortcode.
 *
 * All behaviour and design settings are stored per-orbit in the orbit's own
 * Settings metabox (_aha_orbit_settings). The shortcode accepts only the
 * orbit ID (and an optional style slug for add-ons).
 *
 * @package Aha_Orbit_Testimonials
 * @since   1.0.0
 */

if (!defined('WPINC')) {
	die;
}

/**
 * Shortcode handler for [aha_orbit id="..."].
 */
class Aha_Orbit_Testimonials_Shortcode
{

	/**
	 * Instance.
	 *
	 * @var self|null
	 */
	private static $instance = null;

	/**
	 * Get instance.
	 *
	 * @return self
	 */
	public static function get_instance()
	{
		if (null === self::$instance) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * Constructor.
	 */
	private function __construct()
	{
		add_shortcode('aha_orbit', array($this, 'render_shortcode'));
	}

	/**
	 * Shortcode callback.
	 *
	 * Accepts:
	 *  id    – Required. Post ID of the Orbit Testimonials slider.
	 *  style – Layout style slug. Default: "orbit". Add-ons can register
	 *          additional styles via the aha_orbit_testimonials_template
	 *          filter (e.g. "grid", "carousel", "list").
	 *
	 * @param array<string, string>|string $atts Shortcode attributes.
	 * @return string HTML output.
	 */
	public function render_shortcode($atts)
	{
		// Global kill switch — if the plugin is disabled, output nothing.
		$general  = wp_parse_args(
			get_option(Aha_Orbit_Testimonials_Settings::OPTION_GENERAL, array()),
			array('enabled' => 1)
		);
		if (empty($general['enabled'])) {
			return '';
		}

		$atts = shortcode_atts(
			array(
				// Required.
				'id'    => 0,
				// Template style slug ("orbit" = default; add-ons can register more).
				'style' => 'orbit',
			),
			$atts,
			'aha_orbit'
		);

		$post_id = absint($atts['id']);

		if (!$post_id || AHA_ORBIT_TESTIMONIALS_CPT !== get_post_type($post_id) || 'publish' !== get_post_status($post_id)) {
			return '<!-- Aha Orbit: Invalid or unpublished Slider ID -->';
		}

		$testimonials = get_post_meta($post_id, '_aha_orbit_testimonials_data', true);
		if (!is_array($testimonials) || empty($testimonials)) {
			return '<!-- Aha Orbit: No testimonials found -->';
		}

		// Optimize image and logo URLs for performance in all templates.
		foreach ($testimonials as &$item) {
			$image_url = isset($item['image']) ? $item['image'] : '';
			if (!empty($image_url)) {
				$attachment_id = attachment_url_to_postid($image_url);
				if ($attachment_id) {
					$img_src = wp_get_attachment_image_src($attachment_id, 'aha-orbit-avatar');
					if (!$img_src) {
						$img_src = wp_get_attachment_image_src($attachment_id, 'thumbnail');
					}
					if ($img_src) {
						$item['image'] = $img_src[0];
					}
				}
			}

			$logo_url = isset($item['company_logo']) ? $item['company_logo'] : '';
			if (!empty($logo_url)) {
				$attachment_id = attachment_url_to_postid($logo_url);
				if ($attachment_id) {
					$img_src = wp_get_attachment_image_src($attachment_id, 'aha-orbit-logo');
					if ($img_src) {
						$item['company_logo'] = $img_src[0];
					}
				}
			}
		}
		unset($item);

		// ── Per-orbit settings from metabox ───────────────────────────────────
		$meta = get_post_meta($post_id, '_aha_orbit_settings', true);
		$meta = wp_parse_args(
			(array) $meta,
			array(
				'layout'              => 'default',
				'layoutMode'          => 'auto',
				'showArrows'          => 'yes',
				'showDots'            => 'yes',
				'autoplay'            => 'yes',
				'interval'            => 5000,
				'transitionSpeed'     => 800,
				'animationDelay'      => 150,
				'grayscale'           => 'yes',
				'draggable'           => 'yes',
				'containerHeight'     => 450,
				'grid_columns'        => 3,
				'carousel_columns'    => 1,
				'card_bg'             => '',
				'text_color'          => '',
				'name_color'          => '',
				'role_color'          => '',
				'quote_color'         => '',
				'arrow_color'         => '',
				'bullet_color'        => '',
				'bullet_active_color' => '',
			)
		);

		// ── Build JS options ──────────────────────────────────────────────────
		// Note: assets are enqueued by each template (default.php, grid.php, carousel.php)
		// so that only the relevant CSS/JS is loaded per layout.

		$js_options = array(
			'data'            => $this->format_testimonials_for_js($testimonials),
			'layoutMode'      => $meta['layoutMode'],
			'showArrows'      => 'yes' === $meta['showArrows'],
			'showDots'        => 'yes' === $meta['showDots'],
			'autoplay'        => 'yes' === $meta['autoplay'],
			'interval'        => (int) $meta['interval'],
			'transitionSpeed' => (int) $meta['transitionSpeed'],
			'animationDelay'  => (int) $meta['animationDelay'],
			'grayscale'       => 'yes' === $meta['grayscale'],
			'draggable'       => 'yes' === $meta['draggable'],
			'columns'         => isset( $meta['carousel_columns'] ) ? (int) $meta['carousel_columns'] : 1,
		);

		$inline_style = '--ot-container-height: ' . absint($meta['containerHeight']) . 'px;';
		$js_options   = wp_json_encode($js_options);

		// ── Resolve layout slug first (needed for inline style handle) ────────
		$layout_slug = sanitize_key( $meta['layout'] ?? 'default' );
		if ( '' === $layout_slug ) {
			$layout_slug = 'default';
		}


		// ── Design: CSS custom properties from per-orbit meta ─────────────────
		$design_css_map = array(
			'card_bg'             => '--ot-card-bg',
			'text_color'          => '--ot-text-primary',
			'name_color'          => '--ot-name-color',
			'role_color'          => '--ot-role-color',
			'quote_color'         => '--ot-quote-color',
			'arrow_color'         => '--ot-arrow-color',
			'bullet_color'        => '--ot-bullet-color',
			'bullet_active_color' => '--ot-bullet-active-color',
		);


		$design_vars = array();
		foreach ($design_css_map as $key => $css_var) {
			$val = isset($meta[$key]) ? sanitize_hex_color($meta[$key]) : '';
			if ($val) {
				$design_vars[$css_var] = $val;
			}
		}

		$design_css = '';
		if (!empty($design_vars)) {
			$design_css .= '<style>';
			$design_css .= '#aha-orbit-' . $post_id . " {\n";
			foreach ($design_vars as $css_var => $css_val) {
				$design_css .= "\t" . $css_var . ': ' . $css_val . ";\n";
			}
			$design_css .= "}\n";
			$design_css .= '</style>';
		}

		// ── Template resolution ──────────────────────────────────────────────
		/** This filter is documented in aha-orbit-testimonials.php */
		$available_layouts = apply_filters( 'aha_orbit_testimonials_layouts', array() );

		$template_file = isset( $available_layouts[ $layout_slug ]['template'] )
			? $available_layouts[ $layout_slug ]['template']
			: AHA_ORBIT_TESTIMONIALS_PATH . 'templates/frontend/default.php';

		// 2. Allow a final override via the legacy aha_orbit_testimonials_template
		//    filter for backward compatibility with add-ons.
		/**
		 * Filter: aha_orbit_testimonials_template
		 *
		 * Allows a final override of the resolved template path, for backward
		 * compatibility with add-ons that hook into this filter.
		 *
		 * @since 1.0.0
		 * @param string $path     Absolute path to the template file.
		 * @param string $layout   The layout slug saved on this orbit.
		 * @param int    $post_id  ID of the current Orbit Testimonials post.
		 */
		$template_file = apply_filters(
			'aha_orbit_testimonials_template',
			$template_file,
			$layout_slug,
			$post_id
		);

		// Safety: fall back to built-in template if the resolved path is not readable.
		if (!is_string($template_file) || !is_readable($template_file)) {
			$template_file = AHA_ORBIT_TESTIMONIALS_PATH . 'templates/frontend/default.php';
		}


		ob_start();
		// phpcs:ignore WordPressVIPMinimum.Files.IncludingFile.UsingVariable -- path is validated above.
		include $template_file;
		return $design_css . ob_get_clean();
	}

	/**
	 * Format testimonials array for JavaScript consumption.
	 *
	 * @param array<int, array<string, string>> $testimonials Raw testimonials from post meta.
	 * @return array<int, array<string, mixed>>
	 */
	private function format_testimonials_for_js($testimonials)
	{
		$formatted = array();
		foreach ($testimonials as $item) {
			// Fetch optimized image sizes.
			$image_url = isset($item['image']) ? $item['image'] : '';
			if ( ! empty( $image_url ) ) {
				$attachment_id = attachment_url_to_postid( $image_url );
				if ( $attachment_id ) {
					$img_src = wp_get_attachment_image_src( $attachment_id, 'aha-orbit-avatar' );
					if ( ! $img_src ) {
						$img_src = wp_get_attachment_image_src( $attachment_id, 'thumbnail' );
					}
					if ( $img_src ) {
						$image_url = $img_src[0];
					}
				}
			}

			$logo_url = isset($item['company_logo']) ? $item['company_logo'] : '';
			if ( ! empty( $logo_url ) ) {
				$attachment_id = attachment_url_to_postid( $logo_url );
				if ( $attachment_id ) {
					$img_src = wp_get_attachment_image_src( $attachment_id, 'aha-orbit-logo' );
					if ( $img_src ) {
						$logo_url = $img_src[0];
					}
				}
			}

			$slide = array(
				'name'          => isset($item['name']) ? $item['name'] : '',
				'role'          => isset($item['role']) ? $item['role'] : '',
				'text'          => isset($item['text']) ? $item['text'] : '',
				'image'         => $image_url,
				'companyLogo'   => $logo_url,
				'rating'        => isset($item['rating']) ? (float) $item['rating'] : 0,
				'socialNetwork' => isset($item['social_network']) ? $item['social_network'] : '',
				'socialLink'    => isset($item['social_link']) ? $item['social_link'] : '',
				'socialNetworkLabel' => isset($item['social_network']) ? $this->get_social_network_label($item['social_network']) : '',
			);

			if (!empty($item['pos_left']) && !empty($item['pos_top'])) {
				$slide['pos'] = array(
					'left' => $item['pos_left'],
					'top'  => $item['pos_top'],
				);
			}

			$formatted[] = $slide;
		}
		return $formatted;
	}

	/**
	 * Get translated label for a social network.
	 *
	 * @param string $network The social network slug.
	 * @return string The translated label, or the capitalized network name as fallback.
	 */
	private function get_social_network_label($network)
	{
		$labels = array(
			'facebook'   => __('View on Facebook', 'aha-orbit-testimonials'),
			'instagram'  => __('View on Instagram', 'aha-orbit-testimonials'),
			'linkedin'   => __('View on LinkedIn', 'aha-orbit-testimonials'),
			'twitter'    => __('View on X (Twitter)', 'aha-orbit-testimonials'),
			'youtube'    => __('View on YouTube', 'aha-orbit-testimonials'),
			'tiktok'     => __('View on TikTok', 'aha-orbit-testimonials'),
			'google'     => __('View on Google', 'aha-orbit-testimonials'),
			'trustpilot' => __('View on Trustpilot', 'aha-orbit-testimonials'),
		);

		return $labels[$network] ?? ucfirst($network);
	}
}