Task-Manager/firestore.rules at main · JesterOlayvar219/Task-Manager · GitHub

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rules_version = '2';

service cloud.firestore {
  match /databases/{database}/documents {
    // Helper functions
    function isSignedIn() {
      return request.auth != null;
    }

    function isOwner(userId) {
      return request.auth.uid == userId;
    }

    function hasRole(role) {
      return get(/databases/$(database)/documents/users/$(request.auth.uid)).data.role == role;
    }

    function isAdmin() {
      return hasRole('admin');
    }

    function isUserInParticipants(participants) {
      return participants.hasAny([request.auth.uid]);
    }

    function isValidTimestamp(ts) {
      return ts is timestamp &&
             ts.toMillis() <= request.time.toMillis();
    }

    function hasRequiredFields(data, fields) {
      return data.keys().hasAll(fields);
    }

    // Users collection
    match /users/{userId} {
      allow read: if isSignedIn();
      allow create: if isSignedIn() &&
                   isOwner(userId) &&
                   hasRequiredFields(request.resource.data, ['username', 'role']) &&
                   isValidTimestamp(request.resource.data.createdAt);
      allow update: if isSignedIn() &&
                   (isOwner(userId) || isAdmin()) &&
                   isValidTimestamp(request.resource.data.lastActive);
      allow delete: if isAdmin();
    }

    // Messages collection
    match /messages/{messageId} {
      allow read: if isSignedIn() && (
        resource.data.type == 'channel' ||
        (resource.data.type == 'personal' && isUserInParticipants(resource.data.participants))
      );
      allow create: if isSignedIn() &&
                   request.resource.data.sender == request.auth.uid &&
                   hasRequiredFields(request.resource.data, ['content', 'type', 'sender']) &&
                   isValidTimestamp(request.resource.data.timestamp);
      allow update: if false;
      allow delete: if false;
    }

    // Tasks collection
    match /tasks/{taskId} {
      allow read: if isSignedIn();
      allow create: if isSignedIn() &&
                   request.resource.data.createdBy == request.auth.uid &&
                   hasRequiredFields(request.resource.data, ['title', 'description', 'assignee', 'dueDate', 'status']);
      allow update: if isSignedIn() && (
        resource.data.createdBy == request.auth.uid ||
        resource.data.assignee == request.auth.uid ||
        isAdmin()
      );
      allow delete: if isSignedIn() && (
        resource.data.createdBy == request.auth.uid ||
        isAdmin()
      );
    }

    // Resources collection
    match /resources/{resourceId} {
      allow read: if isSignedIn() && (
        resource.data.accessUsers.hasAny(['Everyone', request.auth.uid])
      );
      allow create: if isSignedIn() &&
                   hasRequiredFields(request.resource.data, ['name', 'accessUsers']);
      allow update: if isSignedIn() && (
        resource.data.accessUsers.hasAny([request.auth.uid]) ||
        isAdmin()
      );
      allow delete: if isSignedIn() && (
        resource.data.accessUsers.hasAny([request.auth.uid]) ||
        isAdmin()
      );
    }

    // Notifications collection
    match /notifications/{notificationId} {
      allow read: if isSignedIn() &&
                 resource.data.recipient == request.auth.uid;
      allow create: if isSignedIn() &&
                   hasRequiredFields(request.resource.data, ['message', 'recipient', 'type']);
      allow update: if isSignedIn() &&
                   resource.data.recipient == request.auth.uid;
      allow delete: if isSignedIn() &&
                   resource.data.recipient == request.auth.uid;
    }
  }
}