fix error messages, made redirects when postcode is unknown

assets/postcode_modal.css

@@ -45,6 +45,11 @@
     }
 
     &::backdrop {
+        backdrop-filter: blur(2px);
         background-color: hsl(40deg 100 30 /0.5);
     }
+
+    .error_message_modal_postcode {
+        min-height: 1lh;
+    }
 }

prijs-per-postcode.php

@@ -3,7 +3,7 @@
 session_start();
 require_once "session_dialog.php";
 /*
- * Plugin Name: Prijs per Postcode
+ * Plugin Name: Goedkoop Tilburg
  * Description: veschillende prijzen per postdoce. een range posctcodes zijn "lokaal" andere zijn overig
  * Author: Remo Zaros
  * Version: 0.0.1
@@ -33,6 +33,14 @@ class PrijsPerPostcode
             "custom_show_products_by_tag",
         ]);
         add_action("template_redirect", [$this, "redirect_if_missing_tag"]);
+        add_action("template_redirect", [
+            $this,
+            "force_404_for_specific_product_tags",
+        ]);
+        add_action("template_redirect", [
+            $this,
+            "redirect_checkout_if_lokaaltarief_not_set",
+        ]);
         add_action("wp_footer", [$this, "set_checkout_fields_with_javascript"]);
         add_filter("woocommerce_checkout_fields", [
             $this,
@@ -52,12 +60,10 @@ class PrijsPerPostcode
 
     public function set_checkout_fields_with_javascript()
     {
-        // Only run off the checkout page
         if (!is_checkout() || is_wc_endpoint_url()) {
             return;
         }
 
-        // Define the values you want to set
         $woonplaats = $_SESSION["woonplaats"];
         $postcode = $formatted_postcode = preg_replace(
             "/(\d+)([A-Z]+)/",
@@ -70,7 +76,6 @@ class PrijsPerPostcode
         ?>
                 <script type="text/javascript">
                 jQuery(document).ready(function($){
-                    // Set the values for the checkout fields
                     $('#billing_city').val('<?php echo esc_js(
                         $woonplaats,
                     ); ?>');
@@ -87,19 +92,15 @@ class PrijsPerPostcode
 
     public function custom_show_products_by_tag($q)
     {
-        // Only target main product queries on the frontend
         if (
             !is_admin() &&
             $q->is_main_query() &&
             (is_shop() || is_product_category() || is_home())
         ) {
-            // Replace this with your actual boolean logic
             $show_lokaal = $_SESSION["lokaal_tarief"] ?? false;
 
-            // Determine which tag to show
             $tag_to_show = $show_lokaal ? "lokaal" : "algemeen";
 
-            // Set the tax query to only include the chosen tag
             $tax_query = [
                 [
                     "taxonomy" => "product_tag",
@@ -198,5 +199,49 @@ class PrijsPerPostcode
 
         return $query;
     }
+
+    function redirect_checkout_if_lokaaltarief_not_set()
+    {
+        // Check if we are on the checkout, product, or cart page
+        if (is_checkout() || is_product() || is_cart()) {
+            // Prevent redirect on checkout endpoints (order-received, etc.)
+            if (is_wc_endpoint_url()) {
+                return;
             }
+
+            // Check if the session variable is NOT set
+            if (!isset($_SESSION["lokaal_tarief"])) {
+                wc_clear_notices();
+                wc_add_notice(
+                    __(
+                        "Local rate not available. Redirecting to shop.",
+                        "woocommerce",
+                    ),
+                    "notice",
+                );
+                wp_safe_redirect(wc_get_page_permalink("shop"));
+                exit();
+            }
+        }
+    }
+
+    public function force_404_for_specific_product_tags()
+    {
+        // Check if it's a product tag archive
+        if (is_tax("product_tag")) {
+            $tag = get_queried_object();
+
+            // List of tag slugs to block
+            $blocked_tags = ["lokaal", "algemeen"];
+
+            // If the current tag is in the blocked list, trigger 404
+            if (in_array($tag->slug, $blocked_tags)) {
+                global $wp_query;
+                $wp_query->set_404();
+                status_header(404);
+            }
+        }
+    }
+}
+
 new PrijsPerPostcode();

session_dialog.php

@@ -12,6 +12,9 @@ function if_needed_place_postcode_form($uri)
         add_action("wp_enqueue_scripts", "modal_styles");
         add_action("wp_footer", "send_postcode_data");
         if (!has_postcode()) {
+            if (!is_admin()) {
+                WC()->cart->empty_cart();
+            }
             add_action("wp_footer", "show_modal");
         }
     }
@@ -65,7 +68,20 @@ function send_postcode_data()
               console.log("Data returnd", data);
 
               if (data.status === "error"){
+                  const err = data.message;
+                  let errmsg
 
+                  switch (err) {
+                    case "Huisnummer not found":
+                      errmsg = "Adres niet gevonden.";
+                      break;
+                    case "Multiple addresses match this huisnummer; add huisletter and/or huisnummertoevoeging":
+                      errmsg = "Huisnummertovoeging mist.";
+                      break;
+                    default:
+                      errmsg = "Gegevens niet correct.";
+                  }
+                  document.querySelector("#error_message_modal_postcode").innerHTML = errmsg;
               }
 
               if (data.status === "success"){
@@ -108,7 +124,7 @@ function render_dialog_html()
                 <button id="postcode_modal_submit" type="submit">verzend</button>
             </div>
         <form>
-        <div class="error_message" id="error_message"></div>
+        <div class="error_message_modal_postcode" id="error_message_modal_postcode"></div>
     </dialog>
     <?php
 }