FIT to GPX - Code Sample

[guy-keller]

Hey guys,

I thought I'd contribute with a little code sample. Hope this helps someone / somehow.

---

filename: fit-converter.js

'use strict';

import fs from 'fs';
import sportsLibPkg from '@sports-alliance/sports-lib';
import exporterPkg from '@sports-alliance/sports-lib/lib/events/adapters/exporters/exporter.gpx.js'

const { SportsLib } = sportsLibPkg;
const { EventExporterGPX } = exporterPkg;

// Input and output file path
const inputFilePath = '/tmp/test.fit';
const outputGpxFilePath = '/tmp/test.gpx';

// reads the FIT file into memory
const inputFile = fs.readFileSync(inputFilePath, null);
if (inputFile && inputFile.buffer) {
    const inputFileBuffer = inputFile.buffer;
    // uses lib to read the FIT file
    SportsLib.importFromFit(inputFileBuffer).then((event) => {
        // convert to gpx
        const gpxPromise = new EventExporterGPX().getAsString(event);
        gpxPromise.then((gpxString) => {
            // writes the gpx to file
            fs.writeFileSync(outputGpxFilePath, gpxString, (wError) => {
                if (error) {
                    console.error('Ooops, something went wrong while saving the GPX file, see details below.');
                    console.error(JSON.stringify(wError));
                }
            });
            // all done, celebrate!
            console.log('Converted FIT file to GPX successfully!');
            console.log('GPX file saved here: ' + outputGpxFilePath);
        }).catch((cError) => {
            console.error('Ooops, something went wrong while converting the FIT file, see details below');
            console.error(JSON.stringify(cError));
        });
    });
} else {
    console.error('Ooops, could not read the inputFile or it does not exists, see details below');
    console.error(JSON.stringify(inputFilePath));
}

to run it:

node fit-converter.js

requirements: a "/tmp" folder with a valid test.fit file in it.

---

Many thanks for the easy to use lib!

[jimmykane]

That's great! Thanks so much

[jimmykane]

Is it ok if I include this example to the Readme?

[guy-keller]

Go for it! It would be nice to get a mention. However, if it is too much, it is all good :D

[jimmykane]

Alright should be up now :-D

[jimmykane]

Did a little modification, I tend to like to exit early do identation is little.

[guy-keller]

Looks good; also thanks for the mention!

You might want to fix this here though - from 'error' to 'wError':

        // writes the gpx to file
        fs.writeFileSync(outputGpxFilePath, gpxString, (wError) => {
            if (wError) {
                console.error('Ooops, something went wrong while saving the GPX file, see details below.');
                console.error(JSON.stringify(wError));
            }
        });