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

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

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

    function isValidId(id) {
      return id is string && id.size() > 0 && id.size() <= 128 && id.matches('^[a-zA-Z0-9_\\-]+$');
    }

    function isAdmin() {
      return isSignedIn() && (
        request.auth.token.email == 'bizcaustin@gmail.com' ||
        request.auth.token.email == 'xaustino@hotmail.com'
      );
    }

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

    // User profiles
    match /users/{userId} {
      allow read: if isOwner(userId) || isAdmin();
      allow create: if isOwner(userId) &&
        request.resource.data.uid == userId &&
        request.resource.data.email is string &&
        request.resource.data.email.size() <= 256 &&
        request.resource.data.role in ['trustee', 'co_trustee', 'counsel', 'fiduciary', 'viewer'];
      allow update: if (isOwner(userId) || isAdmin()) &&
        request.resource.data.uid == resource.data.uid;
      allow delete: if isAdmin();
    }

    // Consolidated court case registry
    match /cases/{caseId} {
      allow read: if isSignedIn();
      allow create, update: if isSignedIn() && (
        isAdmin() || 
        (request.resource.data.caseNumber is string && request.resource.data.court is string)
      );
      allow delete: if isAdmin();
    }

    // Digital Signatures
    match /signatures/{signatureId} {
      allow read: if isSignedIn();
      allow create: if isSignedIn() &&
        request.resource.data.uid == request.auth.uid &&
        request.resource.data.tabId is string &&
        request.resource.data.pqcHash is string &&
        request.resource.data.signedAt is string;
      allow update, delete: if isAdmin();
    }

    // Court Filings & Presentments
    match /filings/{filingId} {
      allow read: if isSignedIn();
      allow create: if isSignedIn() &&
        request.resource.data.uid == request.auth.uid &&
        request.resource.data.recipientCourt is string &&
        request.resource.data.docketNumber is string;
      allow update, delete: if isAdmin();
    }

    // Google Workspace Activity Ledger
    match /workspace_activity/{activityId} {
      allow read: if isSignedIn() && (resource.data.uid == request.auth.uid || isAdmin());
      allow create: if isSignedIn() &&
        request.resource.data.uid == request.auth.uid &&
        request.resource.data.action is string;
      allow update, delete: if isAdmin();
    }
  }
}