promptconductor-nextjs/firestore.rules at master · cmdicksonau/promptconductor-nextjs · GitHub

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

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

    function isValidPromptRun() {
      let data = request.resource.data;
      return data.rawPrompt is string && data.rawPrompt.size() < 10000
          && data.targetModel is string && data.targetModel.size() < 100
          && data.thoughts is string && data.thoughts.size() < 50000
          && data.optimizedPrompt is string && data.optimizedPrompt.size() < 50000
          && data.rationale is string && data.rationale.size() < 20000;
    }

    match /users/{userId} {
      // The user document itself (if any)
      allow read: if isOwner(userId);

      match /history/{docId} {
        allow read, delete: if isOwner(userId);
        allow create: if isOwner(userId)
                      && isValidPromptRun()
                      && request.resource.data.createdAt == request.time;
        allow update: if isOwner(userId)
                      && isValidPromptRun()
                      && request.resource.data.createdAt == resource.data.createdAt;
      }

      // Protect rate limit documents from client tampering
      match /rate_limit/{docId} {
         allow read: if isOwner(userId);
         allow write: if false; // Only accessible via Admin SDK in edge function
      }
    }
  }
}