Get rid of invalid filters in the URL.

3 files changed, 33 insertions, 7 deletions

diff --git a/pydis_site/apps/resources/views/resources.py b/pydis_site/apps/resources/views/resources.py
index a5c2cf7c..a38c3b59 100644
--- a/pydis_site/apps/resources/views/resources.py
+++ b/pydis_site/apps/resources/views/resources.py
@@ -1,3 +1,4 @@
+import json
 import typing as t
 from pathlib import Path
 
@@ -8,6 +9,7 @@ from django.shortcuts import render
 from django.views import View
 
 from pydis_site import settings
+from pydis_site.apps.resources.templatetags.as_css_class import as_css_class
 
 RESOURCES_PATH = Path(settings.BASE_DIR, "pydis_site", "apps", "resources", "resources")
 
@@ -83,6 +85,14 @@ class ResourceView(View):
         self.filters["Topics"]["filters"].remove("Other")
         self.filters["Topics"]["filters"].append("Other")
 
+        # A complete list of valid filter names
+        self.valid_filters = {
+            "topics": [as_css_class(topic) for topic in self.filters["Topics"]["filters"]],
+            "payment_tiers": [as_css_class(tier) for tier in self.filters["Payment tiers"]["filters"]],
+            "type": [as_css_class(type_) for type_ in self.filters["Type"]["filters"]],
+            "difficulty": [as_css_class(tier) for tier in self.filters["Difficulty"]["filters"]],
+        }
+
     def get(self, request: WSGIRequest, resource_type: t.Optional[str] = None) -> HttpResponse:
         """List out all the resources, and any filtering options from the URL."""
         # Add type filtering if the request is made to somewhere like /resources/video.
@@ -101,6 +111,7 @@ class ResourceView(View):
             context={
                 "resources": self.resources,
                 "filters": self.filters,
+                "valid_filters": json.dumps(self.valid_filters),
                 "resource_type": resource_type,
             }
         )
diff --git a/pydis_site/static/js/resources/resources.js b/pydis_site/static/js/resources/resources.js
index 44d4db5c..ad26afd4 100644
--- a/pydis_site/static/js/resources/resources.js
+++ b/pydis_site/static/js/resources/resources.js
@@ -67,17 +67,27 @@ function deserializeURLParams() {
         if (paramFilterContent !== null) {
             // We use split here because we always want an array, not a string.
             let paramFilterArray = paramFilterContent.split(",");
-            activeFilters[filterType] = paramFilterArray;
 
             // Update the corresponding filter UI, so it reflects the internal state.
             $(paramFilterArray).each(function(_, filter) {
-                let checkbox = $(`.filter-checkbox[data-filter-name='${filterType}'][data-filter-item='${filter}']`);
-                let filterTag = $(`.filter-box-tag[data-filter-name='${filterType}'][data-filter-item='${filter}']`);
-                let resourceTags = $(`.resource-tag[data-filter-name='${filterType}'][data-filter-item='${filter}']`);
-                checkbox.prop("checked", true);
-                filterTag.show();
-                resourceTags.addClass("active");
+                // Make sure the filter is valid before we do anything.
+                if (String(filter) === "rickroll" && filterType === "type") {
+                    window.location.href = "https://www.youtube.com/watch?v=dQw4w9WgXcQ";
+                } else if (String(filter) === "sneakers" && filterType === "topics") {
+                    window.location.href = "https://www.youtube.com/watch?v=NNZscmNE9QI";
+                } else if (validFilters[filterType].includes(String(filter))) {
+                    let checkbox = $(`.filter-checkbox[data-filter-name='${filterType}'][data-filter-item='${filter}']`);
+                    let filterTag = $(`.filter-box-tag[data-filter-name='${filterType}'][data-filter-item='${filter}']`);
+                    let resourceTags = $(`.resource-tag[data-filter-name='${filterType}'][data-filter-item='${filter}']`);
+                    checkbox.prop("checked", true);
+                    filterTag.show();
+                    resourceTags.addClass("active");
+                    activeFilters[filterType].push(filter);
+                }
             });
+
+            // Ditch all the params from the URL, and recalculate the URL params
+            updateURL();
         }
     });
 }
diff --git a/pydis_site/templates/resources/resources.html b/pydis_site/templates/resources/resources.html
index 13bba1f2..a37bf80a 100644
--- a/pydis_site/templates/resources/resources.html
+++ b/pydis_site/templates/resources/resources.html
@@ -6,6 +6,11 @@
 
 {% block title %}Resources{% endblock %}
 {% block head %}
+    {# Inject a JSON object of all valid filter types from the view #}
+    <script>
+        const validFilters = {{ valid_filters | safe }}
+    </script>
+
     <link rel="stylesheet" href="{% static "css/resources/resources.css" %}">
     <link rel="stylesheet" href="{% static "css/collapsibles.css" %}">
     <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>