const { PaperRecognizer, PST_NAMES } = require("./paper-recognizer.js");

const chunks = [];
process.stdin.on("data", c => chunks.push(c));
process.stdin.on("end", () => {
  const buf = Buffer.concat(chunks);
  const w = buf.readUInt32LE(0);
  const h = buf.readUInt32LE(4);
  const pixels = new Uint8Array(buf.slice(8));
  console.error(`Nodejs: ${w}x${h}, data=${pixels.length}`);

  const r = new PaperRecognizer();
  const result = r.recognize(pixels, w, h);
  console.log(JSON.stringify({
    success: result.success,
    errorCode: result.errorCode,
    errorMessage: result.errorMessage,
    paperType: PST_NAMES[result.paperType] || "UNKNOWN",
    itemCount: result.itemCount,
    smallLocatorOnLeft: result.smallLocatorOnLeft,
    blurLevel: result.blurLevel,
    blurScore: result.blurScore,
    colorBlockCenters: result.colorBlockCenters.length,
    colors: result.colors.length
  }));
  r.free();
});