<?php
/**
 * AKSRT Fixed Homepage Helpers
 *
 * Rebuilds the homepage around a fixed legacy-like skeleton instead of the
 * old freeform home modules canvas.
 *
 * @package AKSRT
 */

defined('ABSPATH') || exit;

if (!function_exists('aksrt_is_fixed_homepage_request')) {
	/**
	 * Whether the current request should use the fixed homepage layout.
	 */
	function aksrt_is_fixed_homepage_request(): bool {
		if (is_admin()) {
			return false;
		}

		return is_front_page() || is_home();
	}
}

if (!function_exists('aksrt_homepage_get_current_page')) {
	/**
	 * Resolve the current homepage page number for both blog and static-front
	 * pagination contexts.
	 */
	function aksrt_homepage_get_current_page(): int {
		return max(1, (int) get_query_var('paged'), (int) get_query_var('page'));
	}
}

if (!function_exists('aksrt_homepage_get_post_types')) {
	/**
	 * Homepage latest feed post types.
	 * Resources are ordinary posts with meta — always post.
	 *
	 * @return string[]
	 */
	function aksrt_homepage_get_post_types(): array {
		return ['post'];
	}
}


if (!function_exists('aksrt_homepage_get_tab_configs')) {
	/**
	 * Homepage category tabs with full config.
	 *
	 * Returns enabled tabs in config order, each with 'term', 'title', 'orderby'.
	 * Preserves every configured row in the saved order.
	 *
	 * @return array<int, array{term:WP_Term, title:string, orderby:string, term_id:int}>
	 */
	function aksrt_homepage_get_tab_configs(): array {
		if (!class_exists('\AKSRT\Settings\Settings')) {
			return [];
		}

		$structured_tabs = \AKSRT\Settings\Settings::homepage_tabs();
		if (empty($structured_tabs)) {
			return [];
		}

		$excluded_cat_ids = array_flip(\AKSRT\Settings\Settings::home_exclude_category_ids());
		$configs = [];

		foreach ($structured_tabs as $tab) {
			if ($tab['term_id'] <= 0) {
				continue;
			}
			if (isset($excluded_cat_ids[$tab['term_id']])) {
				continue;
			}

			$term = get_term($tab['term_id']);
			if (!$term || is_wp_error($term)) {
				continue;
			}
			if ($term->taxonomy !== 'category') {
				continue;
			}

			$configs[] = [
				'term'    => $term,
				'term_id' => (int) $tab['term_id'],
				'title'   => $tab['title'] !== '' ? $tab['title'] : $term->name,
				'orderby' => $tab['orderby'] ?: '',
			];
		}

		return $configs;
	}
}

if (!function_exists('aksrt_homepage_get_sort_mode')) {
	/**
	 * Current homepage main-stream sort mode.
	 */
	function aksrt_homepage_get_sort_mode(): string {
		$allowed = class_exists('\AKSRT\Settings\Settings')
			? \AKSRT\Settings\Settings::homepage_allowed_sorts()
			: ['modified', 'date', 'views', 'like', 'comment_count', 'favorite', 'rand'];
		$default_sort = class_exists('\AKSRT\Settings\Settings')
			? \AKSRT\Settings\Settings::homepage_default_sort()
			: 'modified';
		$override_sort = get_query_var('aksrt_homepage_sort_override');
		$sort = is_string($override_sort) && $override_sort !== ''
			? sanitize_key($override_sort)
			: $default_sort;

		return in_array($sort, $allowed, true) ? $sort : $default_sort;
	}
}

if (!function_exists('aksrt_homepage_get_request_sort')) {
	/**
	 * Main-stream sort requested by URL (?orderby=), legacy zib_sift_posts_per_orde.
	 *
	 * 排序菜单（.ajax-option）点击后原位刷新的响应页靠它同序。
	 */
	function aksrt_homepage_get_request_sort(): string {
		$get_sort = isset($_GET['orderby']) ? sanitize_key(wp_unslash((string) $_GET['orderby'])) : '';
		if ($get_sort === '') {
			return '';
		}

		$allowed = class_exists('\AKSRT\Settings\Settings')
			? \AKSRT\Settings\Settings::homepage_allowed_sorts()
			: ['modified', 'date', 'views', 'like', 'comment_count', 'favorite', 'rand'];

		return in_array($get_sort, $allowed, true) ? $get_sort : '';
	}
}

if (!function_exists('aksrt_homepage_apply_sort_args')) {
	/**
	 * Apply sort args to a query configuration.
	 */
	function aksrt_homepage_apply_sort_args(array $args): array {
		$sort_mode = aksrt_homepage_get_sort_mode();

		// Meta sorts: keep posts without the meta key via OR NOT EXISTS so lists never collapse empty.
		$apply_meta_sort = static function (array $args, string $meta_key): array {
			$args['meta_key'] = $meta_key;
			$args['orderby']  = [
				'meta_value_num' => 'DESC',
				'date'           => 'DESC',
			];
			$args['meta_query'] = [
				'relation' => 'OR',
				[
					'key'     => $meta_key,
					'compare' => 'EXISTS',
				],
				[
					'key'     => $meta_key,
					'compare' => 'NOT EXISTS',
				],
			];
			return $args;
		};

		switch ($sort_mode) {
			case 'modified':
				$args['orderby'] = 'modified';
				$args['order'] = 'DESC';
				break;
			case 'views':
				// Canonical public views key (align hotspot consumers later).
				$args = $apply_meta_sort($args, 'aksrt_post_views');
				break;
			case 'like':
				$args = $apply_meta_sort($args, '_aksrt_like_count');
				break;
			case 'favorite':
				$args = $apply_meta_sort($args, '_aksrt_favorite_count');
				break;
			case 'comment_count':
				$args['orderby'] = 'comment_count';
				$args['order'] = 'DESC';
				break;
			case 'rand':
				$args['orderby'] = 'rand';
				unset($args['order']);
				break;
			case 'date':
			default:
				$args['orderby'] = 'date';
				$args['order'] = 'DESC';
				break;
		}

		return $args;
	}
}

if (!function_exists('aksrt_homepage_apply_named_sort_args')) {
	/**
	 * Apply a specific named sort to query args (used by per-tab orderby).
	 */
	function aksrt_homepage_apply_named_sort_args(array $args, string $sort_mode): array {
		$allowed = class_exists('\AKSRT\Settings\Settings')
			? \AKSRT\Settings\Settings::homepage_allowed_sorts()
			: ['modified', 'date', 'views', 'like', 'comment_count', 'favorite', 'rand'];

		if (!in_array($sort_mode, $allowed, true)) {
			$sort_mode = 'modified';
		}

		$previous = get_query_var('aksrt_homepage_sort_override');
		set_query_var('aksrt_homepage_sort_override', $sort_mode);
		$result = aksrt_homepage_apply_sort_args($args);
		set_query_var('aksrt_homepage_sort_override', $previous);

		return $result;
	}
}

if (!function_exists('aksrt_homepage_render_ajax_option_menu')) {
	/**
	 * 首页排序菜单，1:1 zib_ajax_option_menu('home')。
	 *
	 * 输出 .ajax-option.ajax-replace[win-ajax-replace="filter"]，点击 .ajax-next
	 * 排序链接由 runtime post_ajax 原位替换 #index-tab-main 内的列表。
	 */
	function aksrt_homepage_render_ajax_option_menu(): void {
		if (!empty($_GET['nofilter'])) {
			return;
		}

		if (!class_exists('\AKSRT\Settings\Settings') || !\AKSRT\Settings\Settings::home_list_sort_enabled()) {
			return;
		}

		$con = aksrt_homepage_get_option_orderby_but([
			'lists'    => (array) \AKSRT\Settings\Settings::home_list_sort_options(),
			'dropdown' => (bool) \AKSRT\Settings\Settings::home_list_sort_dropdown(),
		]);

		if (!$con) {
			return;
		}

		echo '<div class="ajax-option ajax-replace" win-ajax-replace="filter">' . $con . '</div>'; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
		echo '<div></div>'; // 空白内容，解决css奇数偶数行
	}
}

if (!function_exists('aksrt_homepage_get_option_orderby_but')) {
	/**
	 * 排序方式按钮组，1:1 zib_get_option_orderby_but。
	 *
	 * @param array{lists?:string[],dropdown?:bool} $option Sort option config.
	 */
	function aksrt_homepage_get_option_orderby_but($option = []): string {
		$defaults = [
			'lists'    => [],
			'dropdown' => false,
		];

		$option = wp_parse_args((array) $option, $defaults);
		if (!$option['lists'] && !$option['dropdown']) {
			return '';
		}

		$labels = class_exists('\AKSRT\Settings\Settings')
			? \AKSRT\Settings\Settings::homepage_sort_labels()
			: ['modified' => '更新', 'date' => '发布', 'views' => '浏览', 'like' => '点赞', 'comment_count' => '评论', 'favorite' => '收藏', 'rand' => '随机'];

		$dropdown_but = '';
		$but          = '';
		$uri          = aksrt_homepage_url_del_paged(aksrt_homepage_get_current_url());

		foreach ($option['lists'] as $key) {
			if (!isset($labels[$key])) {
				continue;
			}
			$_class = 'ajax-next';
			if (isset($_GET['orderby']) && sanitize_key(wp_unslash((string) $_GET['orderby'])) === $key) {
				$_class .= ' focus-color';
			}
			$href = add_query_arg(['orderby' => $key], $uri);
			$but .= '<a rel="nofollow" ajax-replace="true" class="' . esc_attr($_class) . '" href="' . esc_url($href) . '">' . esc_html($labels[$key]) . '</a>';
		}
		if ($option['dropdown']) {
			foreach ($labels as $key => $value) {
				$_class = 'ajax-next';
				if (isset($_GET['orderby']) && sanitize_key(wp_unslash((string) $_GET['orderby'])) === $key) {
					$_class .= ' focus-color';
				}
				$href = add_query_arg(['orderby' => $key], $uri);
				$dropdown_but .= '<li><a rel="nofollow" ajax-replace="true" class="' . esc_attr($_class) . '" href="' . esc_url($href) . '">' . esc_html($value) . '</a></li>';
			}
		}

		if (!$but && !$dropdown_but) {
			return '';
		}

		$is_dropdown = ($option['dropdown'] && $dropdown_but) ? true : false;
		$d_but       = $is_dropdown
			? '<a href="javascript:;" data-toggle="dropdown"><span name="cat">' . esc_html__('排序', 'aksrt') . '</span><i class="fa fas fa-fw fa-sort opacity5" aria-hidden="true"></i></a>'
			: esc_html__('排序', 'aksrt');

		$html  = '<div class="flex ac">';
		$html .= '<div class="option-dropdown splitters-this-r dropdown flex0">';
		$html .= $d_but;
		$html .= $is_dropdown ? '<ul class="dropdown-menu">' . $dropdown_but . '</ul>' : '';
		$html .= '</div>';
		$html .= '<ul class="list-inline scroll-x mini-scrollbar option-items">' . $but . '</ul>';
		$html .= '</div>';

		return $html;
	}
}

if (!function_exists('aksrt_homepage_get_current_url')) {
	/**
	 * 当前页面链接，1:1 zib_get_current_url。
	 */
	function aksrt_homepage_get_current_url(): string {
		$home_url = home_url();
		$host = preg_replace('/^(http|https)(:\/\/)(?)([^\/]+).*$/im', '$1$2$3', $home_url);

		return $host . add_query_arg(null, false);
	}
}

if (!function_exists('aksrt_homepage_url_del_paged')) {
	/**
	 * 移除分页参数的链接，1:1 zib_url_del_paged。
	 */
	function aksrt_homepage_url_del_paged(string $url): string {
		$url = remove_query_arg(['paged', 'page'], $url);
		global $wp_rewrite;

		return preg_replace('/\/' . $wp_rewrite->pagination_base . '\/\d*/', '', $url);
	}
}