update indexdb to contain new collection

src/scripts/database/DataSyncService.ts

@@ -601,6 +601,8 @@ export class DataSyncService {
         return db.users;
       case Collections.EVENTS:
         return db.events;
+      case Collections.EVENT_ATTENDEES:
+        return db.eventAttendees;
       case Collections.EVENT_REQUESTS:
         return db.eventRequests;
       case Collections.LOGS:
@@ -619,6 +621,62 @@ export class DataSyncService {
     }
   }
 
+  /**
+   * Store an event code in local storage for offline check-in
+   * This is used when a user scans a QR code but is offline
+   * @param eventCode The event code to store
+   */
+  public async storeEventCode(eventCode: string): Promise<void> {
+    if (!isBrowser) return;
+
+    try {
+      // Store in localStorage instead of IndexedDB for security
+      localStorage.setItem('pending_event_code', eventCode);
+      localStorage.setItem('pending_event_code_timestamp', Date.now().toString());
+      console.log('Event code stored for offline check-in');
+    } catch (error) {
+      console.error('Error storing event code:', error);
+    }
+  }
+
+  /**
+   * Clear the stored event code from local storage
+   */
+  public async clearEventCode(): Promise<void> {
+    if (!isBrowser) return;
+
+    try {
+      localStorage.removeItem('pending_event_code');
+      localStorage.removeItem('pending_event_code_timestamp');
+      console.log('Event code cleared');
+    } catch (error) {
+      console.error('Error clearing event code:', error);
+    }
+  }
+
+  /**
+   * Get the stored event code from local storage
+   * @returns The stored event code, or null if none exists
+   */
+  public async getStoredEventCode(): Promise<{ code: string; timestamp: number } | null> {
+    if (!isBrowser) return null;
+
+    try {
+      const code = localStorage.getItem('pending_event_code');
+      const timestamp = localStorage.getItem('pending_event_code_timestamp');
+      
+      if (!code || !timestamp) return null;
+      
+      return {
+        code,
+        timestamp: parseInt(timestamp)
+      };
+    } catch (error) {
+      console.error('Error getting stored event code:', error);
+      return null;
+    }
+  }
+
   /**
    * Purge event_code fields from events in IndexedDB for security
    * This should be called on login to ensure no event codes are stored

src/scripts/database/DexieService.ts

@@ -8,6 +8,7 @@ import type {
   Reimbursement,
   Receipt,
   Sponsor,
+  EventAttendee,
 } from "../../schemas/pocketbase/schema";
 
 // Check if we're in a browser environment
@@ -29,6 +30,7 @@ interface OfflineChange {
 export class DashboardDatabase extends Dexie {
   users!: Dexie.Table<User, string>;
   events!: Dexie.Table<Event, string>;
+  eventAttendees!: Dexie.Table<EventAttendee, string>;
   eventRequests!: Dexie.Table<EventRequest, string>;
   logs!: Dexie.Table<Log, string>;
   officers!: Dexie.Table<Officer, string>;
@@ -63,6 +65,12 @@ export class DashboardDatabase extends Dexie {
       offlineChanges:
         "id, collection, recordId, operation, timestamp, synced, syncAttempts",
     });
+    
+    // Add version 3 with eventAttendees table and updated events table (no attendees field)
+    this.version(3).stores({
+      events: "id, event_name, event_code, start_date, end_date, published",
+      eventAttendees: "id, user, event, time_checked_in",
+    });
   }
 
   // Initialize the database with default values
@@ -70,6 +78,7 @@ export class DashboardDatabase extends Dexie {
     const collections = [
       "users",
       "events",
+      "event_attendees",
       "event_request",
       "logs",
       "officers",
@@ -155,6 +164,7 @@ export class DexieService {
     const db = this.db as DashboardDatabase;
     await db.users.clear();
     await db.events.clear();
+    await db.eventAttendees.clear();
     await db.eventRequests.clear();
     await db.logs.clear();
     await db.officers.clear();
@@ -167,6 +177,7 @@ export class DexieService {
     const collections = [
       "users",
       "events",
+      "event_attendees",
       "event_request",
       "logs",
       "officers",