firestore.rules

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    function isAuthenticated() {
      return request.auth != null
    }
    match /stats/{stat} {
      allow read: if isAuthenticated();
    }
    match /questions/{stat} {
      allow read: if isAuthenticated();
    }
  	match /exams/{exam} {
      allow read: if isAuthenticated();
      match /questions/{question} {
        allow read: if isAuthenticated();
      }
    }
    match /schools/{school} {
      allow read: if isAuthenticated();
    }
    match /courses/{course} {
      allow read: if isAuthenticated();
    }
  	match /reports/{report} {
      allow create: if isAuthenticated() &&
        request.resource.data.keys().hasAll(['uid', 'exam', 'createdAt', 'history', 'score', 'numQuestions', 'percentage', 'grade']) &&
        request.resource.data.keys().hasOnly(['uid', 'exam', 'createdAt', 'history', 'score', 'numQuestions', 'percentage', 'grade']) &&
        request.resource.data.uid == request.auth.uid &&
        request.resource.data.grade != null &&
        request.resource.data.grade in ['A', 'B', 'C', 'D', 'E', 'F'] &&
        request.resource.data.percentage is number &&
        request.resource.data.percentage >= 0 &&
        request.resource.data.percentage <= 100 &&
        request.resource.data.score is number &&
        request.resource.data.score >= 0 &&
        request.resource.data.numQuestions is number &&
        request.resource.data.numQuestions >= 0 &&
        request.resource.data.numQuestions >= request.resource.data.score &&
        request.resource.data.numQuestions == request.resource.data.history.size();
    }
  }
}