// taken from http://blog.stevenlevithan.com/archives/parseuri

// parseUri 1.2.2

// (c) Steven Levithan <stevenlevithan.com>

// MIT License

import _ from 'lodash';

const PARSEURI_DEFAULT_OPTIONS = {

  strictMode: false,

  key: ["source","protocol","authority","userInfo","user","password","host","port","relative","path","directory","file","query","anchor"],

  q: {

    name:   "queryKey",

    parser: /(?:^|&)([^&=]*)=?([^&]*)/g

  },

  parser: {

    strict: /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,

    loose:  /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/

  }

};

export default {

  parseUri : function (str, options) {

    var o = _.defaultsDeep(options || {}, PARSEURI_DEFAULT_OPTIONS);

    var	m   = o.parser[o.strictMode ? "strict" : "loose"].exec(str),

        uri = {},

        i   = 14;

    while (i--) { uri[o.key[i]] = m[i] || ""; }

    uri[o.q.name] = {};

    uri[o.key[12]].replace(o.q.parser, function ($0, $1, $2) {

      if ($1) { uri[o.q.name][$1] = $2; }

    });

    return uri;

  },

  mergeUri : function(uriParts) {

    let res = "";

    if(uriParts.protocol) {

      res += uriParts.protocol+":";

    }

    if(uriParts.host) {

      res += "//" + uriParts.host;

    }

    if(uriParts.port) {

      res += ":" + uriParts.port;

    }

    if(uriParts.path) {

      res += uriParts.path;

    }

    if(uriParts.queryKey) {

      res += "?" + _.map(uriParts.queryKey, function(v,k) {

        return k + "=" + v;

      }).join("&");

    }

    return res;

  }

};