import { acquireQvac, releaseQvac, loadAuxiliaryModel, qvacSdk, withQvacMaster, qvacBusy } from './qvac-master.js';

export class QvacPerception {
  constructor({ model = process.env.JARVIS_OCR_MODEL || 'OCR_LATIN' } = {}) { this.model = model; this.modelId = null; }
  async ocr(image) {
    if (qvacBusy()) throw new Error('OCR skipped while the language model is answering');
    await acquireQvac();
    try {
      this.modelId ||= await loadAuxiliaryModel(this.model, {});
      const sdk = await qvacSdk();
      const result = await withQvacMaster(() => sdk.ocr({ modelId: this.modelId, image, stream: false }));
      return result.blocks;
    } finally { releaseQvac(); }
  }
}