PharmAid/firestore.rules at main · kayceepeece/PharmAid · GitHub

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rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read, write: if false;
    }

    function isSignedIn() { return request.auth != null; }
    function incoming() { return request.resource.data; }
    function existing() { return resource.data; }

    function isValidNote(data) {
      return data.keys().hasAll(['userId', 'title', 'content', 'createdAt', 'updatedAt'])
        && data.keys().size() == 5
        && data.userId == request.auth.uid
        && data.title is string && data.title.size() <= 200
        && data.content is string && data.content.size() <= 50000
        && data.createdAt is timestamp
        && data.updatedAt is timestamp;
    }

    match /notes/{noteId} {
      allow read: if isSignedIn() && existing().userId == request.auth.uid;
      // allow list must check resource.data to secure the data
      allow list: if isSignedIn() && resource.data.userId == request.auth.uid;
      allow delete: if isSignedIn() && existing().userId == request.auth.uid;
      allow create: if isSignedIn()
                    && isValidNote(incoming())
                    && incoming().createdAt == request.time;
      allow update: if isSignedIn()
                    && existing().userId == request.auth.uid
                    && incoming().diff(existing()).affectedKeys().hasOnly(['title', 'content', 'updatedAt'])
                    && incoming().updatedAt == request.time
                    && incoming().title is string && incoming().title.size() <= 200
                    && incoming().content is string && incoming().content.size() <= 50000;
    }
  }
}