firestore.rules

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    function allowedToRead(requestUserId, userId) {
      return requestUserId == userId ||
        (requestUserId == 'IXqAy9z163RP3E6xlUtRaiCIGu02' && userId == 'x4mf0jrcFzSHUrysfe0lmNCorBW2') ||
        (requestUserId == 'yMnqhT0Ai3UTmCSVpP3WY2EZW3M2' && userId == 'zfeIBcTalCeVP0ujWnn2coEK1F63') ||
        (requestUserId == 'Fbml0XiSZmPYJ3lfYEioTqGmiGK2' && userId == 'Fd0gpzdUzgeyde9fdp4udKzp3Af2') ||
        (requestUserId == '31Nqv4E2juTweNiisBN5pCRhzsl2' && userId == '9C8Tn8SGdjWJzUEXMm8UWXCzOMa2');
    }
    // Allow user access to only their own data.
    match /users/{userId} {
      allow read, write: if allowedToRead(request.auth.uid, userId);
    }
    match /{userId}/{document=**} {
      allow read, write: if allowedToRead(request.auth.uid, userId);
    }
    match /global/version {
      allow read;
    }
  }
}