Storage

We store mainly 3 things in the storage (images):

• Member photos
  • /avatars/{groupId}/{memberId}
  • max 512px and maintain aspect ratio
  • JPG with compression 60%
• User photos
  • /profilePictures/{userId}
  • max 512px and maintain aspect ratio
  • JPG with compression 60%
• Transaction receipts
  • /receipts/{groupId}/{expenseId}
  • max 2560px and maintain aspect ratio
  • JPG with compression 85%
  • These can also be PDFs

Photo can be added offline * First you add path of the local image to Firebase * Then you schedule a task for uploading (should be triggered only when device is online) * After the upload is complete, replace local path with remote path in Firebase

Storage Rules

Storage rules

rules_version = '2'
service firebase.storage {
  match /b/{bucket}/o {
    match /receipts/{groupId}/{expenseId} {
      // If user knows groupId and it's signed in, allow read & write
      allow read, write: if request.auth != null;
    }
    match /avatars/{groupId}/{memberId} {
      // If user knows groupId and it's signed in, allow read & write
      allow read, write: if request.auth != null;
    }
    match /archive/{groupId}/{filename} {
      // If user knows groupId and it's signed in, allow read & write
      allow read, write: if request.auth != null;
    }
    match /profilePictures/{userId} {
      // Anyone signed in can read
      allow read: if request.auth != null;
      // Only user can edit own picture
      allow write: if request.auth.uid == userId;
    }
  }
}