Sage/FIREBASE_SETUP.md

Firebase Setup Guide for Sage

Step 1: Create Firebase Project

1. Go to Firebase Console
2. Click "Add project"
3. Enter project name: sage-kitchen-management
4. Disable Google Analytics (optional for this app)
5. Click "Create project"

Step 2: Add Android App

1. In Firebase Console, click the Android icon to add an Android app
2. Enter package name: com.example.sage (must match AndroidManifest.xml)
3. App nickname: Sage (optional)
4. Debug signing certificate SHA-1: (optional, skip for now)
5. Click "Register app"

Step 3: Download Configuration File

1. Download the google-services.json file
2. Place it in: android/app/google-services.json

Step 4: Set up Firestore Database

1. In Firebase Console, go to "Build" → "Firestore Database"
2. Click "Create database"
3. Choose "Start in test mode" for development
4. Select a Firestore location (e.g., us-central)
5. Click "Enable"

Security Rules (update after testing)

For development/testing, use test mode rules:

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read, write: if request.time < timestamp.date(2025, 12, 31);
    }
  }
}

For production, update to:

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    // Allow anyone to read household data by code
    match /households/{householdId} {
      allow read: if true;
      allow create: if true;
      allow update: if true;
      allow delete: if request.auth != null;

      // Allow household members to manage items
      match /items/{itemId} {
        allow read: if true;
        allow write: if true;
      }
    }
  }
}

Step 5: Update Android Build Files (Already Done)

The following files need to be updated (will be done automatically):

1. android/build.gradle - Add Google Services plugin
2. android/app/build.gradle - Apply Google Services plugin

Step 6: Initialize Firebase in App

The app will automatically initialize Firebase on startup.

Firestore Data Structure

households (collection)
  └── {householdCode} (document)
      ├── id: string
      ├── name: string
      ├── ownerName: string
      ├── createdAt: string (ISO 8601)
      └── members: array<string>
      └── items (subcollection)
          └── {itemKey} (document)
              ├── name: string
              ├── barcode: string?
              ├── quantity: number
              ├── unit: string?
              ├── purchaseDate: string (ISO 8601)
              ├── expirationDate: string (ISO 8601)
              ├── locationIndex: number
              ├── category: string?
              ├── photoUrl: string?
              ├── notes: string?
              ├── userId: string?
              ├── householdId: string
              ├── lastModified: string (ISO 8601)
              └── syncedToCloud: boolean

Testing

1. Create a household on Device A
2. Note the 6-character code
3. Join the household from Device B using the code
4. Add items on Device A → should appear on Device B
5. Add items on Device B → should appear on Device A

Troubleshooting

• "google-services.json not found": Make sure file is in android/app/ directory
• Build errors: Run flutter clean && flutter pub get
• Permission denied: Check Firestore security rules in Firebase Console
• Items not syncing: Check internet connection and Firebase Console logs