<?php
/**
 * Shared post renderer helpers.
 *
 * @package AKSRT
 */

defined('ABSPATH') || exit;

if (!function_exists('aksrt_renderer_collect_post_data')) {
	/**
	 * Aggregate the runtime data needed by all renderer modes.
	 *
	 * @param array<string,mixed> $cfg Renderer config.
	 * @return array<string,mixed>
	 */
	function aksrt_renderer_collect_post_data(array $cfg): array {
		$post_id = (int) get_the_ID();
		if ($post_id <= 0) {
			return [];
		}

		$images = aksrt_renderer_resolve_images($post_id, $cfg);
		$gallery_images = array_slice($images['gallery'], 0, $cfg['multi_thumb_limit']);
		$is_mult_thumb = !empty($cfg['multi_thumb_enabled'])
			&& count($gallery_images) >= (int) $cfg['multi_thumb_min']
			&& $cfg['mode'] === 'list';

		$author_id = (int) get_post_field('post_author', $post_id);
		$categories = get_the_category($post_id) ?: [];
		$tags = get_the_tags($post_id) ?: [];

		$custom_excerpt = class_exists('\AKSRT\Core\PostMetaBox')
			? (string) \AKSRT\Core\PostMetaBox::get_meta_value($post_id, 'custom_excerpt', '')
			: '';
		$custom_subtitle = (string) get_post_meta($post_id, '_subtitle', true);
		$excerpt_source = $custom_excerpt !== '' ? $custom_excerpt : (string) get_the_excerpt($post_id);
		if ($excerpt_source === '') {
			$excerpt_source = (string) get_post_field('post_content', $post_id, 'raw');
		}
		$excerpt = wp_trim_words(wp_strip_all_tags($excerpt_source), $cfg['excerpt_words'], '...');

		$resource_meta = function_exists('aksrt_get_resource_meta') ? aksrt_get_resource_meta($post_id) : [];
		$resource_strip = function_exists('aksrt_resource_meta_strip') ? aksrt_resource_meta_strip($resource_meta) : [];

		return [
			'post_id'         => $post_id,
			'permalink'       => get_permalink($post_id),
			'title'           => get_the_title($post_id),
			'subtitle'        => $custom_subtitle,
			'excerpt'         => $excerpt,
			'img_url'         => $images['primary'],
			'has_img'         => !empty($images['has_thumb']),
			'has_real_img'    => !empty($images['has_real']),
			'gallery_images'  => $gallery_images,
			'is_mult_thumb'   => $is_mult_thumb,
			'is_video_cover'  => !empty(get_post_meta($post_id, '_aksrt_featured_video', true)) || !empty(get_post_meta($post_id, '_video_url', true)),
			'author_id'       => $author_id,
			'avatar_url'      => get_avatar_url($author_id, ['size' => 40]),
			'author_name'     => get_the_author(),
			'categories'      => $categories,
			'tags'            => $tags,
			'comment_count'   => (int) get_comments_number($post_id),
			'views'           => function_exists('aksrt_get_post_views') ? (int) aksrt_get_post_views($post_id) : 0,
			'likes'           => function_exists('aksrt_get_post_likes') ? (int) aksrt_get_post_likes($post_id) : 0,
			'time_ago'        => human_time_diff((int) get_the_time('U', $post_id), current_time('timestamp')),
			'resource_badge'  => function_exists('aksrt_resource_card_badge_text') ? (string) aksrt_resource_card_badge_text($post_id) : '',
			'resource_strip'  => $resource_strip,
			'is_resource'     => function_exists('aksrt_is_resource_post') ? aksrt_is_resource_post($post_id) : false,
			'is_sticky'       => is_sticky($post_id),
			'thumb_ratio_css' => aksrt_renderer_thumb_ratio_value((string) $cfg['thumb_ratio']),
			'thumb_ratio_key' => (string) $cfg['thumb_ratio'],
		];
	}
}

if (!function_exists('aksrt_renderer_article_attrs')) {
	/**
	 * Build the article wrapper attributes.
	 *
	 * @param string[]             $classes CSS classes.
	 * @param array<string,mixed>  $data    Collected post data.
	 * @return string
	 */
	function aksrt_renderer_article_attrs(array $classes, array $data): string {
		$classes[] = 'thumb-ratio--' . str_replace(':', '-', (string) $data['thumb_ratio_key']);

		return sprintf(
			'class="%s" style="%s"',
			esc_attr(implode(' ', array_unique(array_filter($classes)))),
			esc_attr('--aksrt-thumb-ratio:' . $data['thumb_ratio_css'])
		);
	}
}

if (!function_exists('aksrt_renderer_thumb')) {
	/**
	 * Render the primary thumbnail.
	 *
	 * @param array<string,mixed> $data Collected post data.
	 * @param array<string,mixed> $cfg  Renderer config.
	 * @return string
	 */
	function aksrt_renderer_thumb(array $data, array $cfg): string {
		if (!$cfg['show_thumb'] || empty($data['has_img'])) {
			return '';
		}

		$img  = (string) $data['img_url'];
		$title = (string) $data['title'];
		$href = (string) $data['permalink'];
		$is_sticky = !empty($data['is_sticky']);
		$has_real_img = !empty($data['has_real_img']);

		$fit_class = !empty($cfg['thumb_fit']) && $cfg['thumb_fit'] === 'contain' ? 'fit-contain' : 'fit-cover';
		$img_attr = aksrt_get_lazy_attr('lazy_posts_thumb', $img, $fit_class);
		$img_html = '<img' . $img_attr . ' alt="' . esc_attr($title) . '">';

		$sticky_html = ($is_sticky && !empty($cfg['badge_show']))
			? '<badge class="img-badge left jb-red">' . esc_html__('置顶', 'aksrt') . '</badge>'
			: '';

		$format_badge = '';
		if (!empty($data['is_mult_thumb']) && !empty($data['gallery_images'])) {
			$format_badge = '<badge class="b-black opacity8 abs-right">' . esc_html(count($data['gallery_images'])) . '</badge>';
		} elseif (!empty($data['is_video_cover'])) {
			$format_badge = '<badge class="b-black opacity8 abs-right"><i class="fas fa-play-circle" aria-hidden="true"></i></badge>';
		}

		$empty_class = $has_real_img ? '' : ' item-thumbnail--fallback';
		$target_attr = !empty($cfg['target_blank']) ? ' target="_blank"' : '';

		if ($cfg['mode'] === 'list') {
			$graphic_class = 'post-graphic';
			if (($cfg['list_img_position'] ?? 'left') === 'right') {
				$graphic_class .= ' order1';
			}
			return '<div class="' . esc_attr($graphic_class) . '"><div class="item-thumbnail' . esc_attr($empty_class) . '"><a href="' . esc_url($href) . '" rel="bookmark"' . $target_attr . '>'
				. $img_html . '</a>' . $sticky_html . $format_badge . '</div></div>';
		}

		return '<div class="item-thumbnail' . esc_attr($empty_class) . '"><a href="' . esc_url($href) . '" rel="bookmark"' . $target_attr . '>'
			. $img_html . '</a>' . $sticky_html . $format_badge . '</div>';
	}
}

if (!function_exists('aksrt_renderer_mult_thumb')) {
	/**
	 * Render the multi-image strip used by list cards.
	 *
	 * @param array<string,mixed> $data Collected post data.
	 * @return string
	 */
	function aksrt_renderer_mult_thumb(array $data): string {
		if (empty($data['is_mult_thumb']) || empty($data['gallery_images'])) {
			return '';
		}

		$html = '<a class="thumb-items contain" href="' . esc_url($data['permalink']) . '" aria-label="' . esc_attr($data['title']) . '">';

		foreach (array_slice($data['gallery_images'], 0, 4) as $image) {
			$html .= '<span>';
			$html .= '<img' . aksrt_get_lazy_attr('lazy_posts_thumb', (string) $image, 'fit-cover') . ' alt="">';
			$html .= '</span>';
		}

		$html .= '</a>';
		return $html;
	}
}

if (!function_exists('aksrt_renderer_badges')) {
	/**
	 * Render taxonomy and resource badges.
	 *
	 * @param array<string,mixed> $data Collected post data.
	 * @param array<string,mixed> $cfg  Renderer config.
	 * @return string
	 */
	function aksrt_renderer_badges(array $data, array $cfg): string {
		$items = [];

		if (!empty($cfg['show_resource_badge']) && $data['resource_badge'] !== '') {
			$items[] = '<a href="' . esc_url($data['permalink']) . '#posts-pay" class="meta-pay but jb-yellow">' . esc_html($data['resource_badge']) . '</a>';
		}

		if (!empty($cfg['show_badges']) && !empty($cfg['badge_show']) && $cfg['category_limit'] > 0) {
			foreach (array_slice($data['categories'], 0, $cfg['category_limit']) as $category) {
				$items[] = '<a href="' . esc_url(get_category_link($category->term_id)) . '" class="but"><i class="far fa-folder-open" aria-hidden="true"></i> ' . esc_html($category->name) . '</a>';
			}
		}

		if (!empty($cfg['show_tags']) && $cfg['tag_limit'] > 0) {
			foreach (array_slice($data['tags'], 0, $cfg['tag_limit']) as $tag) {
				$items[] = '<a href="' . esc_url(get_tag_link($tag->term_id)) . '" class="but">#' . esc_html($tag->name) . '</a>';
			}
		}

		if (!empty($data['is_resource'])) {
			$items[] = '<span class="but jb-vip">VIP</span>';
		}

		if (empty($items)) {
			return '';
		}

		return '<div class="item-tags scroll-x no-scrollbar">' . implode('', $items) . '</div>';
	}
}

if (!function_exists('aksrt_renderer_resource_strip')) {
	/**
	 * Render compact resource meta chips.
	 *
	 * @param array<string,mixed> $data Collected post data.
	 * @return string
	 */
	function aksrt_renderer_resource_strip(array $data): string {
		if (empty($data['resource_strip']) || !is_array($data['resource_strip'])) {
			return '';
		}

		$html = '<ul class="item-cms-strip">';
		foreach ($data['resource_strip'] as $item) {
			$html .= '<li>' . esc_html((string) $item) . '</li>';
		}
		$html .= '</ul>';

		return $html;
	}
}

if (!function_exists('aksrt_renderer_meta')) {
	/**
	 * Render the meta bar.
	 *
	 * @param array<string,mixed> $data Collected post data.
	 * @param array<string,mixed> $cfg  Renderer config.
	 * @return string
	 */
	function aksrt_renderer_meta(array $data, array $cfg): string {
		if (!$cfg['show_meta']) {
			return '';
		}

		$format_number = function_exists('aksrt_format_number') ? 'aksrt_format_number' : 'strval';

		if ($cfg['mode'] === 'mini') {
			$items = [];
			if (!empty($cfg['show_date'])) {
				$items[] = '<span class="meta-item">' . esc_html($data['time_ago']) . '</span>';
			}
			if (!empty($cfg['show_views'])) {
				$items[] = '<span class="meta-item"><i class="fas fa-eye" aria-hidden="true"></i> ' . esc_html($format_number($data['views'])) . '</span>';
			}

			if (empty($items)) {
				return '';
			}

			return '<div class="item-meta">' . implode('<span class="meta-dot" aria-hidden="true"></span>', $items) . '</div>';
		}

		$left = [];
		if (!empty($cfg['show_author'])) {
			$left[] = '<item class="meta-author flex ac"><img' . aksrt_get_lazy_attr('lazy_avatar', (string) $data['avatar_url'], 'avatar-mini', aksrt_get_lazy_thumb('sm')) . ' alt="" width="20" height="20"><name class="meta-name">' . esc_html($data['author_name']) . '</name></item>';
		}
		if (!empty($cfg['show_date'])) {
			$left[] = '<item class="meta-time">' . esc_html($data['time_ago']) . '</item>';
		}

		$right = [];
		if (!empty($cfg['show_comments'])) {
			$right[] = '<item class="meta-view"><i class="fas fa-comment" aria-hidden="true"></i> ' . esc_html((string) $data['comment_count']) . '</item>';
		}
		if (!empty($cfg['show_views'])) {
			$right[] = '<item class="meta-view"><i class="fas fa-eye" aria-hidden="true"></i> ' . esc_html($format_number($data['views'])) . '</item>';
		}
		if (!empty($cfg['show_likes'])) {
			$right[] = '<item class="meta-view"><i class="fas fa-thumbs-up" aria-hidden="true"></i> ' . esc_html($format_number($data['likes'])) . '</item>';
		}

		if (empty($left) && empty($right)) {
			return '';
		}

		$html = '<div class="item-meta muted-2-color flex jsb ac">';
		if (!empty($left)) {
			$html .= '<div class="meta-author-group flex ac">' . implode('<span class="meta-dot" aria-hidden="true"></span>', $left) . '</div>';
		}
		if (!empty($right)) {
			$html .= '<div class="meta-right">' . implode('', $right) . '</div>';
		}
		$html .= '</div>';

		return $html;
	}
}