<?php

/**
 * The public-facing functionality of the plugin.
 *
 * @link       https://horizontes.info
 * @since      1.0.0
 *
 * @package    Wc_Cdp
 * @subpackage Wc_Cdp/public
 */

/**
 * The public-facing functionality of the plugin.
 *
 * Defines the plugin name, version, and two examples hooks for how to
 * enqueue the public-facing stylesheet and JavaScript.
 *
 * @package    Wc_Cdp
 * @subpackage Wc_Cdp/public
 * @author     Horizontes Coop. <contato@horizontes.info>
 */
class Wc_Cdp_Public {

	/**
	 * The ID of this plugin.
	 *
	 * @since    1.0.0
	 * @access   private
	 * @var      string    $plugin_name    The ID of this plugin.
	 */
	private $plugin_name;

	/**
	 * The version of this plugin.
	 *
	 * @since    1.0.0
	 * @access   private
	 * @var      string    $version    The current version of this plugin.
	 */
	private $version;

	/**
	 * Initialize the class and set its properties.
	 *
	 * @since    1.0.0
	 * @param      string    $plugin_name       The name of the plugin.
	 * @param      string    $version    The version of this plugin.
	 */
	public function __construct( $plugin_name, $version ) {

		$this->plugin_name = $plugin_name;
		$this->version = $version;

	}

	/**
	 * Register the stylesheets for the public-facing side of the site.
	 *
	 * @since    1.0.0
	 */
	public function enqueue_styles() {

		/**
		 * This function is provided for demonstration purposes only.
		 *
		 * An instance of this class should be passed to the run() function
		 * defined in Wc_Cdp_Loader as all of the hooks are defined
		 * in that particular class.
		 *
		 * The Wc_Cdp_Loader will then create the relationship
		 * between the defined hooks and the functions defined in this
		 * class.
		 */

		wp_enqueue_style( $this->plugin_name, plugin_dir_url( __FILE__ ) . 'css/wc-cdp-public.css', array(), $this->version, 'all' );

	}

	/**
	 * Register the JavaScript for the public-facing side of the site.
	 *
	 * @since    1.0.0
	 */
	public function enqueue_scripts() {

		/**
		 * This function is provided for demonstration purposes only.
		 *
		 * An instance of this class should be passed to the run() function
		 * defined in Wc_Cdp_Loader as all of the hooks are defined
		 * in that particular class.
		 *
		 * The Wc_Cdp_Loader will then create the relationship
		 * between the defined hooks and the functions defined in this
		 * class.
		 */

		wp_enqueue_script( $this->plugin_name, plugin_dir_url( __FILE__ ) . 'js/wc-cdp-public.js', array( 'jquery' ), $this->version, false );

	}

	private function get_bundle_products($product_id)
	{
		$product = wc_get_product( $product_id );

		if ( !$product->get_meta( '_wc_cdp_bundle_products' ) ) return null;

		$bundle_products =  wc_get_products([
			'limit' => 2,
			'include' => $product->get_meta( '_wc_cdp_bundle_products' ),
		]);

		return $bundle_products;
	}

	private function get_bundle_coupon($product_id)
	{
		$product = wc_get_product( $product_id );

		$bundle_coupon = new WC_Coupon( $product->get_meta( '_wc_cdp_bundle_coupon' ) );

		$bundle_coupon_type = $bundle_coupon->get_discount_type();

		if ( $bundle_coupon_type !== 'percent' && $bundle_coupon_type !== 'fixed_cart') {
			return null;
		}

		return $bundle_coupon;
	}

	private function should_display_bundle_modal($product_id)
	{
		$bundle_coupon = $this->get_bundle_coupon($product_id);

		if (!$bundle_coupon) return false;

		$bundle_products = $this->get_bundle_products($product_id);

		if (!$bundle_products) return false;

		$all_products_in_cart = true;

		foreach ($bundle_products as $bundle_product) {
			if ($bundle_product->get_stock_status() === 'outofstock' && $bundle_product->get_backorders() !== 'yes') return false;

			$product_cart_id = WC()->cart->generate_cart_id( $bundle_product->get_id() );
			if ( !WC()->cart->find_product_in_cart( $product_cart_id ) ) {
				$all_products_in_cart = false;
			}
		}

		if ($all_products_in_cart) return false;

		return true;
	}

	public function maybe_display_bundle_modal($cart_item_key, $product_id)
	{
		if ( $this->should_display_bundle_modal( $product_id ) ) { // TODO: Check if all bundle products are available
			add_action( 'woocommerce_after_single_product', array( $this, 'display_bundle_modal' ) );
		}
	}

	public function display_bundle_modal()
	{
		global $product;

		$bundle_products = $this->get_bundle_products( $product->get_id() );

		$bundle_ids = array_map( function($product) {
			return $product->get_id();
		}, $bundle_products );

		array_unshift($bundle_products, $product);

		$bundle_regular_price = array_sum( array_map( function ($product) {
			return $product->get_price();
		}, $bundle_products ) );

		$bundle_coupon = $this->get_bundle_coupon( $product->get_id() );

		if ($bundle_coupon->get_discount_type() === 'percent') {
			$bundle_discount_price = $bundle_regular_price * ( 1 - $bundle_coupon->get_amount()/100 );
		} else {
			$bundle_discount_price = $bundle_regular_price - $bundle_coupon->get_amount();
		}

		require('partials/product-bundle-modal.php');
	}

	public function add_bundle_to_cart()
	{
		$this->check_prerequisites();

	    $bundle_product_ids = $_POST['wc_cdp_bundle_products'];

	    foreach ( $bundle_product_ids as $bundle_product_id ) {
	        $bundle_product_id = apply_filters( 'woocommerce_add_to_cart_product_id', absint( $bundle_product_id ) );

	        $bundle_product = wc_get_product( $bundle_product_id );

	        if ( ! $bundle_product ) {
	            continue;
	        }

	        if ( $bundle_product->is_type( 'simple' ) ) {
	            $quantity = empty( $_POST['quantity'] ) ? 1 : wc_stock_amount( $_POST['quantity'] );
	            $passed_validation = apply_filters( 'woocommerce_add_to_cart_validation', true, $bundle_product_id, $quantity );

	            if ( $passed_validation && false !== WC()->cart->add_to_cart( $bundle_product_id, $quantity ) ) {
	                wc_add_to_cart_message( array( $bundle_product_id => $quantity ), true );
	            }
	        }
	    }

		WC()->cart->apply_coupon( $_POST['wc_cdp_bundle_coupon'] );

		wc_clear_notices();

		wc_add_notice( __('O combo foi adicionado no seu carrinho.', 'wc-cdp') );

		header ('Location: ' . WC()->cart->get_cart_url());
	}

	/**
	 * Check any prerequisites required for our add to cart request.
	 */
	private function check_prerequisites() {
		if ( defined( 'WC_ABSPATH' ) ) {
			// WC 3.6+ - Cart and notice functions are not included during a REST request.
			include_once WC_ABSPATH . 'includes/wc-cart-functions.php';
			include_once WC_ABSPATH . 'includes/wc-notice-functions.php';
		}

		if ( null === WC()->session ) {
			$session_class = apply_filters( 'woocommerce_session_handler', 'WC_Session_Handler' );

			WC()->session = new $session_class();
			WC()->session->init();
		}

		if ( null === WC()->customer ) {
			WC()->customer = new WC_Customer( get_current_user_id(), true );
		}

		if ( null === WC()->cart ) {
			WC()->cart = new WC_Cart();

			// We need to force a refresh of the cart contents from session here (cart contents are normally refreshed on wp_loaded, which has already happened by this point).
			WC()->cart->get_cart();
		}
	}
}