<?php

/*
 * Plugin Name: Prijs per poscodeereeks.
 * Description: Producten worden gefiltered aan de hand van opgegegeven postcodereeksen.Gebruikers met een postcode die in een opgegegeven postcodereeks valt zal een lokale prijs zien. Waar elke gebruiker met een postcode die buiten eem opgegeven reeks valt zal de reguliere prijs te zien krijgen. 
 * Author: Remo Zaros
 * Version: 0.9.090
 * Text Domeain: prijs-per-postcode
 */

require_once plugin_dir_path(__FILE__) . "session_dialog.php";
require_once plugin_dir_path(__FILE__) . "admin.php";
require_once plugin_dir_path(__FILE__) . "pppr_cookie.php";


if (!defined("ABSPATH")) {
    echo "big bag of potatoes";
    exit();
}

/*
 * Create salt 
 */
register_activation_hook( __FILE__, 'create_pppr_salt' );
if ( ! defined( 'WP_PPPR_SALT' ) ) {
    $salt_file = __DIR__ . '/wp-pppr-salt.php'; 
    if ( file_exists( $salt_file ) ) {
        require_once $salt_file;
    }else {
      define("WP_PPPR_SALT", wp_salt( 'auth' ));
  }
}


add_filter("woocommerce_sale_flash", "__return_null");
add_filter('woocommerce_show_variation_price', '__return_true');   


/*
 * Init the plugin
 */
add_action("init", function() {
    $uri = $_SERVER["REQUEST_URI"];
    init_postcode_handlers($uri);
    // set the admin page
    init_postode_admin();
  }, 1
);


/*
 *  Set endpoint (postcode-modal/v1/submit) for the modal form.
 */
add_action("rest_api_init", function () {
    register_rest_route( 'postcode-modal/v1', '/submit', array(
        'methods'             => 'POST',
        'callback'            => 'handle_postcode_modal',
        'permission_callback' => '__return_true',
    ) );
});


/* 
 * Add local orice field to variation product.
 */
add_action("woocommerce_variation_options_pricing", 
    function($loop, $variation_data, $variation)
    {
        woocommerce_wp_text_input([
            "id" => "_local_price[" . $loop . "]",
            "label" =>
                __("Lokale Prijs", "woocommerce") .
                " (" .
                get_woocommerce_currency_symbol() .
                ")",
            "value" => get_post_meta($variation->ID, "_local_price", true),
            "data_type" => "price",
            "wrapper_class" => "form-row form-row-first", // Left half
        ]);
    }, 10, 3,
);


/*
 * Save the local price on product save in the admin
 */
add_action("woocommerce_save_product_variation",
    function ($variation_id, $i)
    {
        $local_price = $_POST["_local_price"][$i];
        if (isset($local_price)) {
            update_post_meta(
                $variation_id,
                "_local_price",
                wc_clean($local_price),
            );
        }
    }, 10, 2,
);


/* 
 * Replace "Reguliere prijs" with "Prijs overige regios" 
 * in variation prodict admin
 */
add_filter( "gettext", function( $translated_text, $text, $domain,) {
        if (
            "woocommerce" === $domain &&
            is_admin() &&
            isset($_REQUEST["action"]) &&
            "woocommerce_load_variations" === $_REQUEST["action"]
        ) {
            if ($translated_text === "Reguliere prijs (%s)") {
                $translated_text = "Prijs overige regios (%s)";
            }
        }
        return $translated_text;
    }, 99, 3,
);


/* 
 * Filter out variations whwre the price is 
 * either 0 or '' in the dropdown menu product page
 */
add_filter("woocommerce_variation_is_visible",
    function (
        $visible,
        $variation_id,
        $parent_id,
        $variation,
    ) {
        // Ensure $variation is a valid object
        if (!$variation instanceof WC_Product_Variation) {
            $variation = wc_get_product($variation_id);
        }

        if (!$variation) {
            return false;
        }

        $price = pppr_is_local()
            ? $variation->get_meta("_local_price", true)
            : $variation->get_regular_price();

        if (empty($price) || floatval($price) == 0) {
            return false;
        }

        return $visible;
    }, 10, 4,
);


/* 
 * Dynamically recalculates the cart total by overriding the standard price 
 * with a region-specific _local_price for variations when 
 * the user's location matches the PPPR cookie criteria 
 */
add_action("woocommerce_before_calculate_totals", function($cart)
    {
        if (is_admin() && !defined("DOING_AJAX")) {
            return;
        }

        foreach ($cart->get_cart() as $cart_item) 
        {
            $product = $cart_item["data"];
            $variation_id = $product->is_type("variation")
                ? $product->get_id()
                : 0;

            if ( $variation_id && isset($_COOKIE["PPPR"]) && pppr_is_local() ) 
            {
                $local_price = get_post_meta(
                    $variation_id,
                    "_local_price",
                    true,
                );

                if ($local_price) 
                {
                    $product->set_price($local_price);
                }
            }
        }
    }
);


/* 
 * Filter to display the regular or local price on teh product page. 
 */
add_filter( "woocommerce_get_price_html",
    function($price_html, $product)
    {
        if (
            $product->is_type("variation") &&
            isset($_COOKIE["PPPR"]) &&
            pppr_is_local()
        ) {
            $local_price = get_post_meta(
                $product->get_id(),
                "_local_price",
                true,
            );
            if ($local_price !== "") {
                return wc_price($local_price);
            }
        }
        return $price_html;
    }, 10, 2,
);


/* 
 * Enforces region-locking by clearing the cart and redirecting users to 
 * the shop page if their location cookie is invalid or expired when 
 * accessing key WooCommerce pages. 
 */
add_action("template_redirect",
    function ()
    {
        if (is_admin() || defined("DOING_AJAX")) {
            return;
        }

        if (
            (is_product() ||
             is_product_category() ||
             is_product_tag() ||
             is_cart() ||
             is_checkout() ||
             is_account_page()) &&
            !is_shop()
        ) {
            if (!verify_pppr_cookie_string()) {
              if (!WC()->cart->is_empty()) {
                WC()->cart->empty_cart();
             }
              wp_safe_redirect(get_shop_url());
              exit();
            }else{
              update_expire_pppr_cookie();
            }
        }
    }
);


/* 
 * Chack or postcode is still valid when pressing the buy button 
 */
add_action( 'woocommerce_after_checkout_validation', function( $data, $errors ) {
    // 1. Controleer of de cookie bestaat en geldig is
    if ( ! isset( $_COOKIE['PPPR'] ) || ! verify_pppr_cookie_string() ) {
        $errors->add( 
            'pppr_cookie_invalid', 
            __( '<strong>Fout:</strong> Sessie verlopen. Vernieuw de pagina en vul je postcode opnieuw in.', 'woocommerce' ) 
        );
        return; // Stop hier, geen zin om verder te checken
    }

    $pppr_data = get_PPPR_data();

    if ( ! $pppr_data || empty( $pppr_data['postcode'] ) ) {
        $errors->add( 
            'pppr_data_missing', 
            __( '<strong>Fout:</strong> Kon postcode niet laden.', 'woocommerce' ) 
        );
        return;
    }

    // 3. Normalizeer postcodes (gebruik de juiste variabelen!)
    $cookie_pc   = strtoupper( str_replace( ' ', '', $pppr_data['postcode'] ) );
    $shipping_pc = strtoupper( str_replace( ' ', '', $data['shipping_postcode'] ) );

    // 4. Vergelijk
    if ( $cookie_pc !== $shipping_pc ) {
        wc_add_notice( 
            __( '<strong>Fout:</strong> Afleverpostcode komt niet overeen met de eerder ingevulde postcode.', 'woocommerce' ), 
            'error' 
        );
    }
}, 10, 2 );


function get_shop_url () {
  return  (function_exists('wcml_get_store_url')) 
    ? wcml_get_store_url() // WPML WooCommerce Multilingual
    : get_permalink(wc_get_page_id('shop')); // Fallback
}