var Packet = {

  compress:function(patch) {
    var op_keys = {'add':'0','remove':'1','replace':'2','move':'3','copy':'4','test':'5','_get':'6'};
    var compressed = {};
    for (var p = 0, len = patch.length, val; p < len; p++) {
      if(typeof compressed[patch[p].path] === "undefined") {
        compressed[patch[p].path] = [];
      }
      val = isFloat(patch[p].value) ? parseFloat(patch[p].value.toFixed(3)) : patch[p].value;
      compressed[patch[p].path].push([op_keys[patch[p].op],patch[p].value]);
    }
    return compressed;
  },

  decompress:function(patch) {
    var op_keys = {'0':'add','1':'remove','2':'replace','3':'move','4':'copy','5':'test','6':'_get'};
    var decompressed = [];
    for (var path in patch) {
      var l = patch[path].length;
      while(l--) {
        decompressed.push({"op":op_keys[patch[path][l][0]],"path":path,"value":patch[path][l][1]});
      }
    }
    return decompressed;
  },

}

module.exports = Packet;