var mongoose = require('mongoose');
var ActivityPost = mongoose.model('ActivityPost');
var multer  = require('multer')
var upload = multer({ storage:multer.memoryStorage() })
var toGeoJson = require('@mapbox/togeojson');
var domParser = require('xmldom').DOMParser;

router.post('/newactivity',upload.single('gpx'), function (req, res, next) {
    console.log(req.body);
    console.log("file"+req.file);

    //if gpx file is uploaded, convert to geojson and store in db
    let geoJsonOutput;
    let newPost;

    if(req.file)
        {
        let gpxString = req.file.buffer.toString();
        //get xml dom from gpx string and convert to geojson
        let dom = (new domParser()).parseFromString(gpxString, 'text/xml');
        geoJsonOutput=toGeoJson.gpx(dom);

        //make mongoose document here from above data
        //newActivityPost=ActivityPost(
        //geoJson:JSON.stringify(geoJsonOutput);
        }

        else{
        //no file uploaded, just create mongoose document from entered data
        //newActivityPost=ActivityPost(
        //geoJson:JSON.stringify(geoJsonOutput);
        }
    // commit the post created to mongodb
    ActivityPost.save(function (err) {
        if (err)
        {
            return res.status(400).json({
                    status: 'error',
                    message: JSON.stringify([err.message]),
                });
            }
        else{
            return res.status(201).json({
                status: 'success',
                message: 'Successfully Added New Activity Post',
            });
        }
    });
});