use vercel cache

Author: TheCommCraft

website/app.py

@@ -3,10 +3,11 @@
 It is NOT part of the scratchattach Python library and won't be downloaded when you install scratchattach.
 """
 
-from flask import Flask, render_template, send_from_directory, jsonify
-import scratchattach as sa
 import time
 import random
+from flask import Flask, render_template, send_from_directory, jsonify
+from vercel.cache import RuntimeCache
+import scratchattach as sa
 
 app = Flask(__name__, template_folder="source")
 
@@ -27,14 +28,17 @@ def serve_js(filename):
     return send_from_directory('source/js', filename)
 
 # community projects are cached to prevent spamming Scratch's API
-community_projects_cache: list[dict] = []
-last_cache_time = 0
+# community_projects_cache: list[dict] = []
+# last_cache_time = 0
+cache = RuntimeCache(namespace="website")
 
 @app.route('/api/community_projects/')
 def community_projects():
-    global community_projects_cache
-    global last_cache_time
-    if time.time() > last_cache_time + 300:
+    # global community_projects_cache
+    # global last_cache_time
+    community_projects_cache_data = cache.get("community_projects")
+    community_projects_cache = community_projects_cache_data and community_projects_cache_data.get("value")
+    if not community_projects_cache:
         projects = sa.Studio(id=31478892).projects(limit=40)
         if isinstance(projects[0], dict): #atm the server this is running on still uses scratchattach 1.7.4 that returns a list of dicts here
             community_projects_cache = [
@@ -44,5 +48,5 @@ def community_projects():
             community_projects_cache = [
                 {"project_id":p.id, "title":p.title, "author":p.author_name, "thumbnail_url":f"https://uploads.scratch.mit.edu/get_image/project/{p.id}_480x360.png"} for p in projects
             ]
-        last_cache_time = time.time()
-    return jsonify(random.choices(community_projects_cache, k=5))
+        cache.set("community_projects", {"value": community_projects_cache}, {"ttl": 300, "tags": ["website"]})
+    return jsonify(random.choices(community_projects_cache, k=5))