miacompasshub/firestore.rules at main · luacantu/miacompasshub · GitHub

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rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    // ===============================================================
    // Assumed Data Model
    // ===============================================================
    //
    // Collection: users
    // Document ID: {userId}
    // Fields:
    //   - uid: string (required) - User's unique ID
    //   - displayName: string (optional) - User's display name
    //   - email: string (required, email format) - User's email address
    //   - photoURL: string (optional) - User's profile photo URL
    //   - role: string (enum: user, admin) - User's role
    //   - createdAt: timestamp (optional) - Creation timestamp
    //
    // Collection: resources
    // Document ID: {resourceId}
    // Fields:
    //   - title: string (required) - Resource title
    //   - category: string (required) - Resource category
    //   - description: string (optional) - Resource description
    //   - location: string (optional) - Resource location
    //   - authorUid: string (required) - User who added the resource
    //   - createdAt: timestamp (optional) - Creation timestamp
    //
    // Collection: chats
    // Document ID: {chatId}
    // Fields:
    //   - text: string (required) - Message text
    //   - authorUid: string (required) - User who sent the message
    //   - authorName: string (optional) - Name of the sender
    //   - createdAt: timestamp (required) - Creation timestamp
    //
    // ===============================================================

    // ===============================================================
    // Helper Functions
    // ===============================================================

    function isAuthenticated() {
      return request.auth != null;
    }

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

    function isAdmin() {
      return isAuthenticated() &&
        (get(/databases/$(database)/documents/users/$(request.auth.uid)).data.role == 'admin' ||
         (request.auth.token.email == "luacantu@gmail.com" && request.auth.token.email_verified == true));
    }

    function isValidEmail(email) {
      return email is string && email.matches("^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}$");
    }

    function hasOnlyAllowedFields(fields) {
      return request.resource.data.keys().hasOnly(fields);
    }

    // ===============================================================
    // Domain Validators
    // ===============================================================

    function isValidUser(data) {
      return hasOnlyAllowedFields(['uid', 'displayName', 'email', 'photoURL', 'role', 'createdAt', 'surveyCompleted', 'lastSurveyData', 'currentPlan', 'savedItems', 'searchHistory']) &&
             data.uid is string && data.uid.size() > 0 &&
             data.email is string && isValidEmail(data.email) &&
             (!('role' in data) || data.role in ['user', 'admin']) &&
             (!('surveyCompleted' in data) || data.surveyCompleted is bool) &&
             (!('savedItems' in data) || data.savedItems is map) &&
             (!('lastSurveyData' in data) || data.lastSurveyData is map) &&
             (!('currentPlan' in data) || data.currentPlan is string) &&
             (!('searchHistory' in data) || data.searchHistory is list);
    }

    function isValidResource(data) {
      return hasOnlyAllowedFields(['title', 'category', 'description', 'location', 'authorUid', 'createdAt']) &&
             data.title is string && data.title.size() > 0 && data.title.size() < 200 &&
             data.category is string && data.category.size() > 0 &&
             data.authorUid is string && data.authorUid == request.auth.uid;
    }

    function isValidChatMessage(data) {
      return hasOnlyAllowedFields(['text', 'authorUid', 'authorName', 'createdAt']) &&
             data.text is string && data.text.size() > 0 && data.text.size() < 1000 &&
             data.authorUid is string && data.authorUid == request.auth.uid;
    }

    // ===============================================================
    // Rules
    // ===============================================================

    match /users/{userId} {
      allow read: if isOwner(userId) || isAdmin();
      allow create: if isAuthenticated() && isValidUser(request.resource.data) &&
                      ((isOwner(userId) && (!('role' in request.resource.data) || request.resource.data.role == 'user')) || isAdmin());
      allow update: if isAuthenticated() && isValidUser(request.resource.data) &&
                      ((isOwner(userId) && request.resource.data.role == resource.data.role) || isAdmin());
    }

    match /resources/{resourceId} {
      allow read: if isAuthenticated();
      allow create: if isAuthenticated() && isValidResource(request.resource.data);
      allow update: if isAuthenticated() && isValidResource(request.resource.data) &&
                      (request.resource.data.authorUid == resource.data.authorUid || isAdmin());
      allow delete: if isAuthenticated() && (resource.data.authorUid == request.auth.uid || isAdmin());
    }

    match /chats/{chatId} {
      allow read: if isAuthenticated();
      allow create: if isAuthenticated() && isValidChatMessage(request.resource.data);
      allow update, delete: if isAdmin();
    }

    // Default deny
    match /{path=**} {
      allow read, write: if false;
    }
  }
}