implements cache

cache.py

@@ -0,0 +1,42 @@
+# In-memory cache for Filevine projects
+import threading
+import time
+from datetime import datetime, timedelta
+
+class ProjectCache:
+    def __init__(self):
+        self._cache = {}
+        self._lock = threading.Lock()
+        self._last_updated = None
+        self._is_updating = False
+
+    def get_projects(self):
+        """Get cached projects if they exist and are not expired (15 minutes)"""
+        with self._lock:
+            if not self._cache or not self._last_updated:
+                return None
+
+            # Check if cache is older than 15 minutes
+            if datetime.now() - self._last_updated > timedelta(minutes=15):
+                return None
+
+            return self._cache.copy()
+
+    def set_projects(self, projects):
+        """Set projects in cache with current timestamp"""
+        with self._lock:
+            self._cache = projects.copy() if projects else {}
+            self._last_updated = datetime.now()
+
+    def is_updating(self):
+        """Check if cache is currently being updated"""
+        with self._lock:
+            return self._is_updating
+
+    def set_updating(self, updating):
+        """Set the updating status"""
+        with self._lock:
+            self._is_updating = updating
+
+# Global cache instance
+project_cache = ProjectCache()