const path = require('path');
const fs = require('fs');
const YAML = require('yaml');

var CONFIG = null;
var CONFIG_PATH = "";

exports = {
  get: function(){
    if (arguments.length === 1 && typeof(arguments[0]) === 'string'){
      if (CONFIG_PATH !== arguments[0]){
        var cpath = path.normalize(arguments[0]);
        if (!path.isAbsolute(cpath))
          cpath = path.join(__dirname, cpath);
        try {
          CONFIG = YAML.parse(fs.readFileSync(cpath, 'utf8'));
        } catch (e) {
          console.log("ERROR: " + e.toString());
        }
      }
    }
    return CONFIG;
  }
};