const mm = require("music-metadata");
const fs = require("fs");
const path = require("path");

class meta {

    constructor(files) {
        if(!files) throw Error("files not specified");
        this.data = {};
        this.ls = files;
    }

  buildMeta() {

        var that = this;
        return new Promise(function(resolve, reject) {
        for(let i = 0; i < that.ls.length; i++) {

            mm.parseFile(that.ls[i]).then(x => {
                var info = x.common;
                that.data[info.artist] = "test";
            }).catch((x) => {
              reject(x);
            });
       }
       resolve(that.data);
    });


    }
}
module.exports = meta;