@sports-alliance/sports-lib/check_zones_sdk.mjs

A Library to for importing / exporting and processing GPX, TCX, FIT and JSON files from services such as Strava, Movescount, Garmin, Polar etc

import fs from 'fs';
import { Decoder, Stream } from '@garmin/fitsdk';

const filePath = '../fit-parser/examples/file-with-zones.fit';

try {
  const fileBuffer = fs.readFileSync(filePath);
  const stream = Stream.fromBuffer(fileBuffer);
  const decoder = new Decoder(stream);
  const { messages } = decoder.read();

  if (messages.eventMesgs && messages.eventMesgs.length > 0) {
    console.log('\n--- EVENT MESSAGES (FULL - Checking for keys) ---');
    messages.eventMesgs.forEach((msg, i) => {
      console.log(`Event ${i}:`, JSON.stringify(msg));
    });
  }

  // Also check for developer fields in ANY message
  console.log('\n--- Checking for Developer Fields ---');
  Object.keys(messages).forEach(group => {
    if (Array.isArray(messages[group])) {
      messages[group].forEach((msg, i) => {
        const devFields = Object.keys(msg).filter(
          k => k.startsWith('developer') || k.includes('dev') || k === 'unknown'
        );
        if (devFields.length > 0) {
          console.log(`Developer/Unknown fields in ${group}[${i}]:`, devFields, msg);
        }
      });
    }
  });
} catch (err) {
  console.error(err);
}