memorybook/firestore.rules at main · JuniorTorresMTJ/memorybook · GitHub

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

    // ============================================
    // HELPER FUNCTIONS
    // ============================================

    // Check if the user is authenticated
    function isAuthenticated() {
      return request.auth != null;
    }

    // Check if the user owns the resource
    function isOwner(userId) {
      return isAuthenticated() && request.auth.uid == userId;
    }

    // Validate page count (10, 15, or 20)
    function isValidPageCount(pageCount) {
      return pageCount in [10, 15, 20];
    }

    // Validate image style
    function isValidImageStyle(style) {
      return style in ['coloring', 'cartoon', 'anime', 'watercolor'];
    }

    // Validate book status (including 'completed')
    function isValidBookStatus(status) {
      return status in ['draft', 'generating', 'completed', 'ready', 'error'];
    }

    // Validate tone (allow both formats)
    function isValidTone(tone) {
      return tone == null || tone in ['warm', 'joyful', 'calm', 'warm_simple', 'calm_reflective'];
    }

    // Validate reading level (allow both formats)
    function isValidReadingLevel(level) {
      return level == null || level in ['very-simple', 'standard', 'very_simple'];
    }

    // Validate image category
    function isValidImageCategory(category) {
      return category in ['profile_reference', 'childhood', 'teen', 'adult', 'laterLife'];
    }

    // Validate section ID
    function isValidSectionId(sectionId) {
      return sectionId in ['childhood', 'teen', 'adult', 'laterLife'];
    }

    // ============================================
    // USERS COLLECTION
    // ============================================
    match /users/{userId} {
      // Users can only read and write their own document
      allow read: if isOwner(userId);
      allow create: if isOwner(userId) &&
        request.resource.data.keys().hasAll(['displayName', 'email', 'createdAt']) &&
        request.resource.data.displayName is string &&
        request.resource.data.email is string;
      allow update: if isOwner(userId);
      allow delete: if isOwner(userId);
    }

    // ============================================
    // MEMORY BOOKS COLLECTION
    // ============================================
    match /memoryBooks/{bookId} {
      // Read: authenticated users can read their own books
      allow read: if isAuthenticated() &&
        resource.data.ownerId == request.auth.uid;

      // Create: authenticated users can create books
      allow create: if isAuthenticated() &&
        request.resource.data.ownerId == request.auth.uid &&
        request.resource.data.keys().hasAll(['ownerId', 'title', 'pageCount', 'imageStyle', 'status', 'createdAt', 'updatedAt']) &&
        request.resource.data.title is string &&
        request.resource.data.title.size() > 0 &&
        isValidPageCount(request.resource.data.pageCount) &&
        isValidImageStyle(request.resource.data.imageStyle) &&
        isValidBookStatus(request.resource.data.status) &&
        isValidTone(request.resource.data.get('tone', null)) &&
        isValidReadingLevel(request.resource.data.get('readingLevel', null));

      // Update: owner only, cannot change ownerId
      allow update: if isAuthenticated() &&
        resource.data.ownerId == request.auth.uid &&
        request.resource.data.ownerId == resource.data.ownerId &&
        isValidBookStatus(request.resource.data.status);

      // Delete: owner only
      allow delete: if isAuthenticated() &&
        resource.data.ownerId == request.auth.uid;

      // ----------------------------------------
      // SECTIONS SUBCOLLECTION
      // ----------------------------------------
      match /sections/{sectionId} {
        allow read: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

        allow create, update: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

        allow delete: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;
      }

      // ----------------------------------------
      // IMAGES SUBCOLLECTION
      // ----------------------------------------
      match /images/{imageId} {
        allow read: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

        allow create: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

        allow update: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

        allow delete: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;
      }

      // ----------------------------------------
      // PAGES SUBCOLLECTION
      // ----------------------------------------
      match /pages/{pageId} {
        allow read: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

        allow create: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

        allow update: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

        allow delete: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;
      }

      // ----------------------------------------
      // GENERATION JOBS SUBCOLLECTION
      // ----------------------------------------
      match /generationJobs/{jobId} {
        allow read: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

        allow create: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

        allow update: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

        // Owner can delete generation jobs (for book cleanup)
        allow delete: if isAuthenticated() &&
          get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

        // Persisted book images subcollection
        match /images/{imageId} {
          allow read: if isAuthenticated() &&
            get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

          allow create, update: if isAuthenticated() &&
            get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;

          // Owner can delete images (for book cleanup)
          allow delete: if isAuthenticated() &&
            get(/databases/$(database)/documents/memoryBooks/$(bookId)).data.ownerId == request.auth.uid;
        }
      }
    }

    // ============================================
    // DENY ALL OTHER ACCESS
    // ============================================
    // Prevent listing all documents in root collections
    match /{document=**} {
      allow read, write: if false;
    }
  }
}