Feat/add functionality to remove all blocked URLs at once

src/contentfilter/main.py

@@ -281,4 +281,28 @@ async def import_json(
     return redir_resp
 
 
+@webapp.post("/remove/all", name="remove_all_urls")
+async def clear_urls(
+    request: Request,
+    username: str = AuthDependency,
+):
+    redir_resp = RedirectResponse(
+        request.url_for("settings"), status_code=http.HTTPStatus.FOUND
+    )
+    try:
+        num_urls = len(database)
+        database.clear()
+        if num_urls:
+            flash(
+                request,
+                f"Successfully removed {num_urls} blocked URL(s) from the list",
+                "success",
+            )
+        else:
+            flash(request, "The list was already empty", "info")
+    except Exception as exc:
+        flash(request, f"Unable to remove URLs: {exc}.", "danger")
+    return redir_resp
+
+
 app.mount(Conf.webroot_prefix, webapp)

src/contentfilter/templates/settings.html

@@ -19,6 +19,12 @@ <h2>Import from file</h2>
   </div>
 </form>
 
+<h2 class="mt-4">Delete all URLs</h2>
+<p>Remove all blocked URLs from your list. This action cannot be undone.</p>
+<form method="POST" action="{{ url_for('remove_all_urls') }}" onsubmit="return confirm('Are you sure you want to delete all blocked URLs? This cannot be undone.');">
+  <button type="submit" class="btn btn-danger"><i class="bi-trash" role="img"></i> Delete All</button>
+</form>
+
 <hr />
 
 <h2>Settings</h2>