PerfectTime/firestore.rules at master · Tallround3r/PerfectTime · GitHub

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rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {

    function getTrip(tripId) {
      return get(/databases/$(database)/documents/TRIPS/$(tripId)).data;
    }

    function isOwnerOrMember(tripId) {
      return request.auth.uid != null && (request.auth.uid == getTrip(tripId).owner || request.auth.uid in getTrip(tripId).members);
    }

    match /TRIPS/{tripId}/{document=**} {
      allow list: if request.auth.uid != null;
      allow read: if isOwnerOrMember(tripId) || (request.auth.uid != null && getTrip(tripId).public == true);
      allow create: if request.auth.uid != null;
      allow update: if isOwnerOrMember(tripId);
      allow delete: if request.auth.uid != null && getTrip(tripId).owner == request.auth.uid;
    }

    match /users/{userId} {
      allow read, create;
      allow update, delete: if request.auth.uid == userId;
  	}

  	match /presence/{document=**} {
      allow read, write;
    }

  	match /sessions/{document=**} {
      allow read, write;
    }

  }
}