const fs = require('fs');
var archiver = require('archiver');

function zip_directory(filename, copyFrom, copyToPath){
    var copyTo = copyToPath + filename;

    if(!fs.existsSync(copyToPath)){
        fs.mkdirSync(copyToPath);
    }

    var output = fs.createWriteStream(copyTo);
    var archive = archiver('zip', {
      zlib: { level: 9 } // Sets the compression level.
    });

    output.on('close', function () {
        console.log(`\n<< ARCHIVE LOG: TOTAL BYTES ${archive.pointer()} >>`);
        console.log(`\n<< ARCHIVE LOG: archiver has been finalized and the output file descriptor has closed. >>`);
    });

    output.on('end', function() {
	  console.log(`\n<< ARCHIVE LOG: END : Data has been drained. >>`);
	});

    archive.on('warning', function(err) {
	  if (err.code === 'ENOENT') {
	    console.log(`\n<< ARCHIVE LOG: ENOENT ${err} >>`);
	  } else {
	    console.log(`\n<< ARCHIVE LOG: WARNING ${err} >>`);
	  }
	});

    archive.on('error', function(err){
        console.log(`\n<< ARCHIVE LOG: Error : ${err} >>`);
    });

    try {
        archive.pipe(output);
        archive.directory(copyFrom, { name: filename });
        archive.finalize();
    } catch (err) {
        console.log(`\n<< ARCHIVE LOG: Error : ${err} >>`);
    }
}


zip_directory('myzipfile.zip', '/home/', '/opt/zipfiles/');