<?php
/**
 * Homepage header component visibility and rendering.
 *
 * @package AKSRT
 */

defined('ABSPATH') || exit;

if (!function_exists('aksrt_header_components_page_type_keys')) {
	/**
	 * Allowed page-type keys for header multi-function (zibll CFS_Module::page_type).
	 *
	 * @return list<string>
	 */
	function aksrt_header_components_page_type_keys(): array {
		return [
			'home',
			'category',
			'tag',
			'author',
			'single',
			'search',
			'page',
		];
	}
}

if (!function_exists('aksrt_header_slide_excluded_page_templates')) {
	/**
	 * Page templates excluded from the generic "page" type (zibll parity).
	 *
	 * @return list<string>
	 */
	function aksrt_header_slide_excluded_page_templates(): array {
		return [
			'templates/pages/page-sign.php',
			'templates/pages/page-login.php',
			'templates/pages/page-register.php',
			'templates/pages/page-reset-password.php',
			'templates/pages/page-bind-account.php',
			'templates/pages/page-verify-email.php',
			'templates/pages/page-download.php',
			'templates/pages/page-download-file.php',
		];
	}
}

if (!function_exists('aksrt_header_slide_match_page_type')) {
	/**
	 * Whether the current main query matches a header-slider page-type key.
	 *
	 * Mirrors zibll zib_header_slide_is_show() matching rules.
	 */
	function aksrt_header_slide_match_page_type(string $type): bool {
		global $wp_query;

		$type = sanitize_key($type);
		if ($type === '' || !($wp_query instanceof WP_Query)) {
			return false;
		}

		$raw_post_type = $wp_query->get('post_type');
		if (is_array($raw_post_type)) {
			$post_type = (string) reset($raw_post_type);
		} else {
			$post_type = (string) $raw_post_type;
		}

		// Generic WP_Query is_* flags (home/category/tag/author/single/search/page).
		$query_flag = 'is_' . $type;
		if (empty($wp_query->{$query_flag})) {
			return false;
		}

		if ($type === 'single') {
			// Only ordinary posts; CPTs use dedicated keys.
			return $post_type === '' || $post_type === 'post';
		}

		if ($type === 'page') {
			foreach (aksrt_header_slide_excluded_page_templates() as $template) {
				if (is_page_template($template)) {
					return false;
				}
			}
			return true;
		}

		return true;
	}
}

if (!function_exists('aksrt_header_slide_is_show')) {
	/**
	 * Whether the header multi-function slider should render (zibll header-slider contract).
	 *
	 * Master switch: non-empty header_components_show_on + current page-type match.
	 * Device rule: header_components_device_visibility (only_pc / only_sm).
	 */
	function aksrt_header_slide_is_show(): bool {
		global $wp_query;

		if (is_admin() || !($wp_query instanceof WP_Query)) {
			return false;
		}

		// Not on paginated views (zibll: query_vars['paged'] non-empty).
		$paged = (int) $wp_query->get('paged');
		if ($paged > 1) {
			return false;
		}
		if (function_exists('aksrt_homepage_get_current_page') && aksrt_homepage_get_current_page() > 1) {
			return false;
		}

		$settings = class_exists('\AKSRT\Settings\Settings')
			? \AKSRT\Settings\Settings::get_header_components_settings()
			: [];
		$show_on = isset($settings['show_on_pages']) ? (array) $settings['show_on_pages'] : [];
		$allowed = array_values(array_intersect(
			array_map('sanitize_key', $show_on),
			aksrt_header_components_page_type_keys()
		));

		// Empty selection = feature off (zibll header_slider_show).
		if ($allowed === []) {
			return false;
		}

		// Device visibility (zibll header_slider_show_type).
		$show_type = (string) ($settings['show_type'] ?? '');
		if ($show_type === 'only_pc' && wp_is_mobile()) {
			return false;
		}
		if ($show_type === 'only_sm' && !wp_is_mobile()) {
			return false;
		}

		foreach ($allowed as $type) {
			if (aksrt_header_slide_match_page_type($type)) {
				return true;
			}
		}

		return false;
	}
}

if (!function_exists('aksrt_header_slide')) {
	/**
	 * Render header slider after the site header (outside main).
	 */
	function aksrt_header_slide(): void {
		if (!aksrt_header_slide_is_show()) {
			return;
		}

		// Reuse existing hero partial as the slider implementation.
		get_template_part('templates/parts/home-modules/module', 'hero');
	}
}