<?php
/**
 * Add Free gifts settings on wp admin page.
 *
 * @package woodmart
 */

namespace XTS\Modules\Free_Gifts;

use WP_Error;
use XTS\Singleton;
use XTS\Admin\Modules\Options\Metaboxes;
use XTS\Admin\Modules\Dashboard\Status_Button;
use WC_Product;

/**
 * Add Free gifts settings on wp admin page.
 */
class Admin extends Singleton {
	/**
	 * Metabox class instanse.
	 *
	 * @var Metabox instanse.
	 */
	public $metabox;

	/**
	 * Manager instance.
	 *
	 * @var Manager instanse.
	 */
	public $manager;

	/**
	 * Init.
	 */
	public function init() {
		if ( ! woodmart_get_opt( 'free_gifts_enabled', 0 ) || woodmart_get_opt( 'free_gifts_limit', 5 ) < 1 || ! woodmart_woocommerce_installed() ) {
			return;
		}

		$this->manager = Manager::get_instance();

		add_action( 'new_to_publish', array( $this, 'clear_transients_on_publish' ) );
		add_action( 'save_post', array( $this, 'clear_transients' ), 10, 2 );
		add_action( 'edit_post', array( $this, 'clear_transients' ), 10, 2 );
		add_action( 'deleted_post', array( $this, 'clear_transients' ), 10, 2 );
		add_action( 'woodmart_change_post_status', array( $this, 'clear_transients_on_ajax' ) );
		add_action( 'woocommerce_product_set_stock_status', array( $this, 'clear_transients_on_change_product_state' ), 10, 3 );
		add_action( 'woocommerce_variation_set_stock_status', array( $this, 'clear_transients_on_change_product_state' ), 10, 3 );

		add_action( 'init', array( $this, 'add_metaboxes' ) );

		// Select2 values for free gift options.
		add_action( 'wp_ajax_xts_woo_free_gift_select', array( $this, 'free_gift_select' ) );

		new Status_Button( 'wd_woo_free_gifts', 2 );

		add_action( 'manage_wd_woo_free_gifts_posts_columns', array( $this, 'admin_columns_titles' ) );
		add_action( 'manage_wd_woo_free_gifts_posts_custom_column', array( $this, 'admin_columns_content' ), 10, 2 );
	}

	/**
	 * Clear transients on create post.
	 *
	 * @param WP_Post $post Post object.
	 *
	 * @return void
	 */
	public function clear_transients_on_publish( $post ) {
		$this->clear_transients( 0, $post );
	}

	/**
	 * Clear transients.
	 *
	 * @param int     $post_id Post ID.
	 * @param WP_Post $post Post object.
	 *
	 * @return void
	 */
	public function clear_transients( $post_id, $post ) {
		if ( ! $post || ! in_array( $post->post_type, array( 'wd_woo_free_gifts', 'product' ), true ) ) {
			return;
		}

		if ( 'wd_woo_free_gifts' === $post->post_type ) {
			delete_transient( $this->manager->wd_transient_free_gifts_rule . '_' . $post->ID );
		} else {
			$ids = $this->manager->get_all_rule_posts_ids();

			foreach ( $ids as $id ) {
				delete_transient( $this->manager->wd_transient_free_gifts_rule . '_' . $id );
			}
		}

		delete_transient( $this->manager->wd_transient_free_gifts_ids );
		delete_transient( $this->manager->wd_transient_free_gifts_all_rules );
	}

	/**
	 * Clear transients on ajax action.
	 *
	 * @return void
	 */
	public function clear_transients_on_ajax() {
		if ( ! wp_doing_ajax() || empty( $_POST['action'] ) || empty( $_POST['id'] ) || 'wd_change_post_status' !== $_POST['action'] ) {
			return;
		}

		$post = get_post( $_POST['id'] );

		if ( ! $post || 'wd_woo_free_gifts' !== $post->post_type ) {
			return;
		}

		delete_transient( $this->manager->wd_transient_free_gifts_all_rules );
		delete_transient( $this->manager->wd_transient_free_gifts_ids );
		delete_transient( $this->manager->wd_transient_free_gifts_rule . '_' . $post->ID );
	}

	/**
	 * Clear transients on change product state status.
	 *
	 * @param integer $product_id Product ID.
	 * @param string  $stock_status Stock status product.
	 * @param object  $product Data product.
	 *
	 * @return void
	 */
	public function clear_transients_on_change_product_state( $product_id, $stock_status, $product ) {
		if ( 'variable' === $product->get_type() ) {
			return;
		}

		$ids = $this->manager->get_all_rule_posts_ids();

		foreach ( $ids as $id ) {
			delete_transient( $this->manager->wd_transient_free_gifts_rule . '_' . $id );
		}

		delete_transient( $this->manager->wd_transient_free_gifts_ids );
		delete_transient( $this->manager->wd_transient_free_gifts_all_rules );
	}

	/**
	 * Add metaboxes for free gifts.
	 *
	 * @return void
	 */
	public function add_metaboxes() {
		$metabox = Metaboxes::add_metabox(
			array(
				'id'         => 'wd_woo_free_gifts_metaboxes',
				'title'      => esc_html__( 'Settings', 'woodmart' ),
				'post_types' => array( 'wd_woo_free_gifts' ),
			)
		);

		$metabox->add_section(
			array(
				'id'       => 'general',
				'name'     => esc_html__( 'General', 'woodmart' ),
				'icon'     => 'xts-i-footer',
				'priority' => 10,
			)
		);

		$metabox->add_field(
			array(
				'id'          => 'free_gifts_rule_type',
				'type'        => 'select',
				'section'     => 'general',
				'name'        => esc_html__( 'Rule type', 'woodmart' ),
				'description' => esc_html__( 'Choose the method for applying gift rules: either automatically add the gift to the cart or display it in a table for manual addition by the customer.', 'woodmart' ),
				'options'     => array(
					'manual'    => array(
						'name'  => esc_html__( 'Manual Gifts', 'woodmart' ),
						'value' => 'manual',
					),
					'automatic' => array(
						'name'  => esc_html__( 'Automatic Gifts', 'woodmart' ),
						'value' => 'automatic',
					),
				),
				'class'       => 'xts-col-6',
				'priority'    => 10,
			)
		);

		$metabox->add_field(
			array(
				'id'           => 'free_gifts',
				'type'         => 'select',
				'section'      => 'general',
				'name'         => esc_html__( 'Free gifts', 'woodmart' ),
				'description'  => esc_html__( 'Select the products that customers can choose from as free gifts with their purchase, allowing them to pick their preferred option.', 'woodmart' ),
				'select2'      => true,
				'multiple'     => true,
				'autocomplete' => array(
					'type'   => 'post',
					'value'  => array( 'product', 'product_variation' ),
					'search' => 'xts_woo_free_gift_select', // Ajax action.
					'render' => 'woodmart_get_post_by_ids_autocomplete',
				),
				'class'        => 'xts-col-6',
				'priority'     => 20,
			)
		);

		$metabox->add_field(
			array(
				'id'       => 'free_gifts_condition',
				'group'    => esc_html__( 'Products in cart condition', 'woodmart' ),
				'type'     => 'conditions',
				'section'  => 'general',
				'priority' => 30,
			)
		);

		$metabox->add_field(
			array(
				'id'          => 'free_gifts_strict_exclude_mode',
				'name'        => esc_html__( 'Strict exclude mode', 'woodmart' ),
				'description' => esc_html__( 'If enabled, free gifts will not be added if there is at least one product in the cart that matches any exclude rule — even if some products match include rules.', 'woodmart' ),
				'group'       => esc_html__( 'Products in cart condition', 'woodmart' ),
				'type'        => 'switcher',
				'section'     => 'general',
				'default'     => false,
				'priority'    => 35,
				'class'       => 'xts-col-6',
			)
		);

		$metabox->add_field(
			array(
				'id'          => 'free_gifts_cart_price_type',
				'type'        => 'select',
				'section'     => 'general',
				'name'        => esc_html__( 'Base price', 'woodmart' ),
				'description' => esc_html__( "Select whether the gift eligibility is based on the cart's total amount (including taxes and discounts), the subtotal amount (excluding taxes and discounts), or the subtotal after discount (discounts applied, excluding taxes and shipping).", 'woodmart' ),
				'group'       => esc_html__( 'Cart price condition', 'woodmart' ),
				'options'     => array(
					'subtotal'                => array(
						'name'  => esc_html__( 'Subtotal', 'woodmart' ),
						'value' => 'subtotal',
					),
					'subtotal_after_discount' => array(
						'name'  => esc_html__( 'Subtotal after discount', 'woodmart' ),
						'value' => 'subtotal_after_discount',
					),
					'total'                   => array(
						'name'  => esc_html__( 'Total', 'woodmart' ),
						'value' => 'total',
					),
				),
				'default'     => 'subtotal',
				'class'       => 'xts-col-12',
				'priority'    => 40,
			)
		);

		$metabox->add_field(
			array(
				'id'          => 'free_gifts_cart_total_min',
				'name'        => esc_html__( 'Cart amount min', 'woodmart' ),
				'description' => esc_html__( 'Set the minimum cart amount required for customers to qualify for a free gift, ensuring that the gift is only offered on purchases above a specified amount.', 'woodmart' ),
				'group'       => esc_html__( 'Cart price condition', 'woodmart' ),
				'type'        => 'text_input',
				'attributes'  => array(
					'type' => 'number',
					'min'  => '0',
					'step' => '1',
				),
				'default'     => 0,
				'section'     => 'general',
				'priority'    => 50,
				'class'       => 'xts-col-6',
			)
		);

		$metabox->add_field(
			array(
				'id'          => 'free_gifts_cart_total_max',
				'name'        => esc_html__( 'Cart amount max', 'woodmart' ),
				'description' => esc_html__( 'Define the maximum cart amount for which a free gift is available, ensuring the offer is valid only within a specified purchase range.', 'woodmart' ),
				'group'       => esc_html__( 'Cart price condition', 'woodmart' ),
				'type'        => 'text_input',
				'attributes'  => array(
					'type' => 'number',
					'min'  => '0',
					'step' => '1',
				),
				'section'     => 'general',
				'priority'    => 60,
				'class'       => 'xts-col-6',
			)
		);

		Manager::get_instance()->set_meta_boxes_fields_keys(
			array(
				'free_gifts_rule_type',
				'free_gifts',
				'free_gifts_condition',
				'free_gifts_strict_exclude_mode',
				'free_gifts_cart_price_type',
				'free_gifts_cart_total_min',
				'free_gifts_cart_total_max',
			)
		);
	}

	/**
	 * Get data from db for render select2 options for free gifts options in admin page.
	 *
	 * @return void
	 */
	public function free_gift_select() {
		check_ajax_referer( 'xts_woo_free_gift_select_nonce', 'security' );

		$search    = isset( $_POST['params']['term'] ) ? $_POST['params']['term'] : false; // phpcs:ignore
		$post_type = isset( $_POST['value'] ) ? explode( ',', $_POST['value'] ) : array( 'product', 'product_variation' ); // phpcs:ignore
		$products  = array();

		$posts = get_posts(
			array(
				's'                => $search,
				'post_type'        => $post_type,
				'post_status'      => 'publish',
				'posts_per_page'   => apply_filters( 'woodmart_get_numberposts_by_query_autocomplete', 20 ),
				'suppress_filters' => false,
			)
		);

		if ( count( $posts ) > 0 ) {
			foreach ( $posts as $post ) {
				$wc_product = wc_get_product( $post->ID );

				if ( $wc_product->has_child() ) {
					continue;
				}

				$products[] = array(
					'id'   => $post->ID,
					'text' => $post->post_title . ' (ID: ' . $post->ID . ')',
				);
			}
		}

		wp_send_json( $products );
	}

	/**
	 * Columns header.
	 *
	 * @param array $posts_columns Columns.
	 *
	 * @return array
	 */
	public function admin_columns_titles( $posts_columns ) {
		$offset = 3;

		return array_slice( $posts_columns, 0, $offset, true ) + array(
			'gifts' => esc_html__( 'Gifts', 'woodmart' ),
		) + array_slice( $posts_columns, $offset, null, true );
	}

	/**
	 * Columns content.
	 *
	 * @param string $column_name Column name.
	 * @param int    $post_id     Post id.
	 *
	 * @return void
	 */
	public function admin_columns_content( $column_name, $post_id ) {
		if ( 'gifts' === $column_name ) {
			$gift_ids    = get_post_meta( $post_id, 'free_gifts', true );
			$gift_titles = array();

			if ( empty( $gift_ids ) ) {
				return;
			}

			foreach ( $gift_ids as $gift_id ) {
				$gift_product = wc_get_product( $gift_id );

				if ( ! $gift_product instanceof WC_Product ) {
					continue;
				}

				$gift_titles[] = '<a href="' . get_permalink( $gift_id ) . '">' . $gift_product->get_title() . '</a>';
			}

			echo wp_kses( implode( ' | ', $gift_titles ), true );
		}
	}
}

Admin::get_instance();
