<?php

namespace Sellkit\Global_Checkout;

defined('ABSPATH') || exit;

use Elementor\Plugin as Elementor;
use Sellkit\Funnel\Steps\Checkout as CheckoutStep;

/**
 * Checkout.
 *
 * @SuppressWarnings(PHPMD.NPathComplexity)
 * @SuppressWarnings(PHPMD.CyclomaticComplexity)
 * @SuppressWarnings(PHPMD.UnusedPrivateMethod)
 * @SuppressWarnings(PHPMD.ExcessiveClassComplexity)
 * @since 1.7.4
 */
class Checkout
{
	const SELLKIT_GLOBAL_CHECKOUT_OPTION                 = 'sellkit_global_checkout_id';
	const SELLKIT_GLOBAL_CHECKOUT_HEADER_FOOTER_TEMPLATE = 'sellkit_global_checkout_header_footer_templates';

	/**
	 * Current post ID.
	 *
	 * @since 2.3.0
	 * @var null|integer
	 */
	public $post_id = null;

	/**
	 * Construct.
	 *
	 * @since 1.7.4
	 */
	public function __construct()
	{
		if (! function_exists('sellkit_pro') || ! sellkit_pro()->is_active_sellkit_pro) {
			return;
		}

		add_action('wp', [$this, 'checkout_block_bump_query_var']);
		add_action('wp', [$this, 'init_sellkit_global_checkout']);
		add_action('wp_ajax_handle_sellkit_global_checkout_ajax_requests', [$this, 'handle_ajax_requests']);
	}

	/**
	 * Order bump for sellkit checkout block
	 *
	 * @since 2.3.0
	 */
	public function checkout_block_bump_query_var()
	{
		$global_checkout_id = get_option(self::SELLKIT_GLOBAL_CHECKOUT_OPTION, 0);

		$steps     = get_post_meta($global_checkout_id, 'nodes', true);
		$bump_data = [];

		if (! is_array($steps)) {
			return;
		}

		foreach ($steps as $step) {
			$step['type'] = (array) $step['type'];

			if ('checkout' === $step['type']['key']) {
				$bump_data = ! empty($step['bump']) ? $step['bump'] : [];
			}
		}

		if (! empty($bump_data)) {
			$bump_data = $this->get_valid_bumps($bump_data);

			set_query_var('bump_data', $bump_data);
		}
	}

	/**
	 * Init sellkit global checkout.
	 *
	 * @since 1.7.4
	 */
	public function init_sellkit_global_checkout()
	{
		$global_checkout_id = get_option(self::SELLKIT_GLOBAL_CHECKOUT_OPTION, 0);

		if (
			0 === $global_checkout_id ||
			'publish' !== get_post_status((int) $global_checkout_id) ||
			(function_exists('is_checkout') && ! is_checkout())
		) {
			return;
		}

		$steps             = get_post_meta($global_checkout_id, 'nodes', true);
		$checkout_id       = 0;
		$bump_data         = [];
		$optimization_data = '';
		$funnel_id         = 0;

		if (! is_array($steps)) {
			return;
		}

		foreach ($steps as $step) {
			$step['type'] = (array) $step['type'];

			if ('checkout' === $step['type']['key']) {
				$checkout_id       = apply_filters('wpml_object_id', $step['page_id'], 'sellkit_step', true); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound -- WPML API.
				$bump_data         = ! empty($step['bump']) ? $step['bump'] : [];
				$optimization_data = ! empty($step['data']['optimization']) ? $step['data']['optimization'] : '';
				$funnel_id         = isset($step['funnel_id']) ? $step['funnel_id'] : 0;
			}
		}

		$checkout_steps = get_post_meta($checkout_id, 'step_data', true);

		if (empty($funnel_id) && ! empty($checkout_steps)) {
			$funnel_id = isset($checkout_steps['funnel_id']) ? $checkout_steps['funnel_id'] : 0;
		}

		if (0 === $checkout_id) {
			return;
		}

		// Remove previous content.
		remove_all_filters('the_content');

		if (defined('ELEMENTOR_VERSION') && 'elementor' === sellkit()->page_builder()) {
			// Set the page content.
			add_filter('the_content', function () use ($checkout_id) {
				ob_Start();
				$content = Elementor::instance()->frontend->get_builder_content_for_display((int) $checkout_id, true);
				echo do_shortcode($content);
				return ob_get_clean();
			}, 5);

			// Set sellkit canvas templates as the page template.
			add_action('template_redirect', function () {
				// Let WooCommerce clear the cart on a successful order-received visit before
				// our exit prevents its priority-20 hook from ever running.
				if (function_exists('wc_clear_cart_after_payment')) {
					wc_clear_cart_after_payment();
				}

				sellkit()->load_files([
					'templates/canvas'
				]);

				exit;
			});
		}

		if ('gutenberg' === sellkit()->page_builder()) {
			$this->load_checkout_block_frontend();

			$checkout_post = get_post($checkout_id);

			global $post;
			$post = $checkout_post; // phpcs:ignore:WordPress.WP.GlobalVariablesOverride.OverrideProhibited
			setup_postdata($post);

			$content = do_blocks($post->post_content);

			$content = apply_filters('the_content', $content); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound -- WordPress core filter.

			add_filter('the_content', function () use ($content) {
				ob_Start();

				echo $content; // phpcs:ignore:WordPress.Security.EscapeOutput.OutputNotEscaped

				return ob_get_clean();
			}, 5);

			// Set sellkit canvas templates as the page template.
			add_action('template_redirect', function () {
				// Let WooCommerce clear the cart on a successful order-received visit before
				// our exit prevents its priority-20 hook from ever running.
				if (function_exists('wc_clear_cart_after_payment')) {
					wc_clear_cart_after_payment();
				}

				sellkit()->load_files([
					'templates/default-canvas'
				]);

				exit;
			});
		}

		add_filter('sellkit_global_checkout_activated', function () {
			return true;
		});

		add_action('sellkit_checkout_required_hidden_fields', function () use ($checkout_id) {
?>
			<input type="hidden" name="sellkit_current_page_id" value="<?php echo esc_attr($checkout_id); ?>">
			<input type="hidden" name="sellkit_global_checkout_id" value="<?php echo esc_attr($checkout_id); ?>">
<?php
		});

		if (! empty($bump_data)) {
			$bump_data = $this->get_valid_bumps($bump_data);

			set_query_var('bump_data', $bump_data);
		}

		if (! empty($optimization_data) && CheckoutStep::apply_coupon_validation($optimization_data)) {
			foreach ($optimization_data['auto_apply_coupons'] as $auto_apply_coupon) {
				wc()->cart->add_discount(get_the_title($auto_apply_coupon['value']));
			}

			wc_clear_notices();
		}

		$header_footer_templates = get_post_meta(intval($funnel_id), self::SELLKIT_GLOBAL_CHECKOUT_HEADER_FOOTER_TEMPLATE, true);

		if (empty($header_footer_templates) || ! is_array($header_footer_templates)) {
			$header_footer_templates = maybe_unserialize($header_footer_templates);
		}

		if (empty($header_footer_templates) || ! is_array($header_footer_templates)) {
			$header_footer_templates = [];
		}

		add_filter('sellkit_global_checkout_header_applied_id', function ($default) use ($header_footer_templates) {
			if (
				array_key_exists('header', $header_footer_templates) &&
				array_key_exists('value', $header_footer_templates['header'])
			) {
				return $header_footer_templates['header']['value'];
			}

			return $default;
		});

		add_filter('sellkit_global_checkout_footer_applied_id', function ($default) use ($header_footer_templates) {
			if (
				array_key_exists('footer', $header_footer_templates) &&
				array_key_exists('value', $header_footer_templates['footer'])
			) {
				return $header_footer_templates['footer']['value'];
			}

			return $default;
		});
	}

	/**
	 * Load checkout block on frontend.
	 *
	 * @since 2.3.0
	 */
	public function load_checkout_block_frontend()
	{
		global $post;

		if (empty($post->post_content)) {
			return;
		}

		$this->post_id = $post->ID;

		$block = 'blocks/checkout';

		$block_data = explode('/', $block);
		$block_name = $block_data[1];

		$class_name = str_replace('-', ' ', $block_name);
		$class_name = str_replace(' ', '_', ucwords($class_name));
		$class_name = "Sellkit\blocks\Render\\{$class_name}";
		$class_path = 'block-editor/' . $block . '/index';

		sellkit()->load_files([
			$class_path,
		]);

		$new_class = new $class_name($this->post_id);

		if (! \WP_Block_Type_Registry::get_instance()->is_registered("sellkit-blocks/{$block_name}")) {
			$this->register_inner_blocks_by_parent($new_class);
			$new_class->register_block_meta();
		}
	}

	/**
	 * Register inner blocks by parent.
	 *
	 * @param Object $parent_class Parent class name.
	 * @since 2.3.0
	 * @return void
	 */
	private function register_inner_blocks_by_parent($parent_class)
	{
		if (! method_exists($parent_class, 'has_inner_blocks')) {
			return;
		}

		$inner_blocks = $parent_class->get_inner_block();

		sellkit()->load_files($inner_blocks);

		foreach ($inner_blocks as $key => $value) {
			if (isset($this->inner_blocks["blocks/{$key}"])) {
				continue;
			}

			$inner_block_class = 'Sellkit\Blocks\Inner_Block\\' . str_replace('-', '_', ucwords($key));

			if (! class_exists($inner_block_class)) {
				continue;
			}

			$inner_block_instance = new $inner_block_class($this->post_id);
			if (! \WP_Block_Type_Registry::get_instance()->is_registered("sellkit-inner-blocks/{$key}")) {
				$inner_block_instance->register_block_meta();
			}
		}
	}

	/**
	 * Handle ajax requests.
	 *
	 * @since 1.8.9
	 */
	public function handle_ajax_requests()
	{
		check_ajax_referer('sellkit', 'nonce');

		if (! current_user_can('manage_options')) {
			wp_send_json_error('You do not have access to this section.', 'sellkit');
		}

		$action = filter_var($_REQUEST['sub_action'], FILTER_SANITIZE_FULL_SPECIAL_CHARS); // phpcs:ignore

		call_user_func([$this, $action]);
	}

	/**
	 * Get header & footer design templates for Global checkout.
	 *
	 * @since 1.8.9
	 */
	private function get_design_templates()
	{
		$type   = filter_input(INPUT_GET, 'template_type', FILTER_SANITIZE_FULL_SPECIAL_CHARS);
		$search = filter_input(INPUT_GET, 'input_value', FILTER_SANITIZE_FULL_SPECIAL_CHARS);

		$args = [
			'post_type'      => 'elementor_library',
			'post_status'    => ['private', 'publish'],
			's'              => $search,
			'posts_per_page' => -1,
			'meta_query'     => [ //phpcs:ignore
				[
					'key'   => '_elementor_template_type',
					'value' => $type,
				],
			],
		];

		$posts = new \WP_Query($args);

		$values = [
			[
				'label' => esc_html__('Default', 'sellkit'),
				'value' => 'default',
			]
		];

		if ($posts->post_count > 0) {
			foreach ($posts->posts as $post) {
				$values[] = [
					'label' => $post->post_title,
					'value' => $post->ID,
				];
			}

			wp_send_json_success($values);
		}

		wp_send_json_success($values);
	}

	/**
	 * Save selected header/footer template id ofr the global checkout.
	 *
	 * @since 1.8.9
	 */
	private function save_selected_template_id()
	{
		$funnel_id     = filter_input(INPUT_POST, 'funnel', FILTER_SANITIZE_NUMBER_INT);
		$template_id   = filter_input(INPUT_POST, 'template_id', FILTER_DEFAULT, FILTER_FORCE_ARRAY);
		$template_type = filter_input(INPUT_POST, 'template', FILTER_SANITIZE_FULL_SPECIAL_CHARS);
		$data          = get_post_meta($funnel_id, self::SELLKIT_GLOBAL_CHECKOUT_HEADER_FOOTER_TEMPLATE, true);

		if (empty($data) || ! is_array($data)) {
			$data = [];
		}

		if (isset($data[$template_type])) {
			unset($data[$template_type]);
		}

		$data[$template_type] = [
			'label' => (empty($template_id['label'])) ? esc_html__('Search...', 'sellkit') : $template_id['label'],
			'value' => (empty($template_id['value'])) ? 0 : $template_id['value'],
		];

		update_post_meta($funnel_id, self::SELLKIT_GLOBAL_CHECKOUT_HEADER_FOOTER_TEMPLATE, $data);

		wp_send_json_success($data);
	}

	/**
	 * Get selected header/footer id.
	 *
	 * @since 1.8.9
	 */
	private function get_selected_template_id()
	{
		$funnel_id = filter_input(INPUT_POST, 'funnel', FILTER_SANITIZE_NUMBER_INT);
		$data      = get_post_meta($funnel_id, self::SELLKIT_GLOBAL_CHECKOUT_HEADER_FOOTER_TEMPLATE, true);
		$template  = filter_input(INPUT_POST, 'template', FILTER_SANITIZE_FULL_SPECIAL_CHARS);

		if (empty($data)) {
			$data = [
				'header' => [
					'label' => esc_html__('Search...', 'sellkit'),
					'value' => 0,
				],
				'footer' => [
					'label' => esc_html__('Search...', 'sellkit'),
					'value' => 0,
				],
			];
		}

		if (! is_array($data)) {
			$data = maybe_unserialize($data);
		}

		wp_send_json_success($data);
	}

	/**
	 * Create new Elementor template.
	 *
	 * @since 1.8.9
	 */
	private function create_new_template()
	{
		$template   = filter_input(INPUT_POST, 'template', FILTER_SANITIZE_FULL_SPECIAL_CHARS);
		$post_title = filter_input(INPUT_POST, 'post_title', FILTER_SANITIZE_FULL_SPECIAL_CHARS);

		$args = [
			'post_type'   => 'elementor_library',
			'post_title'  => $post_title,
			'post_status' => 'publish',
			'meta_input'  => [
				'_elementor_template_type' => $template,
				'_elementor_edit_mode'     => 'builder',
				'jx-layout-type'           => $template,
				'_wp_page_template'        => 'full-width.php',
			],
		];

		$id = wp_insert_post($args);

		if (intval($id) > 0) {
			$editor_url = Elementor::$instance->documents->get($id)->get_edit_url();

			wp_send_json_success([
				'label' => $post_title,
				'value' => $id,
				'url'   => $editor_url,
			]);
		}

		wp_send_json_error();
	}

	/**
	 * Checks all bumps and return data.
	 *
	 * @since 1.8.1
	 * @param array $bump_data Bump data.
	 * @return array
	 */
	public function get_valid_bumps($bump_data)
	{
		$valid_bumps = [];

		foreach ($bump_data as $bump) {
			$conditions = ! empty($bump['data']['conditions']) ? $bump['data']['conditions'] : '';

			if (! empty($conditions) && empty(sellkit_conditions_validation($conditions))) {
				continue;
			}

			$valid_bumps[] = $bump;
		}

		return $valid_bumps;
	}
}

new Checkout();