"use strict";

// Source code from https://github.com/saintmac/angular-cache-buster
// Forces $http requests to NOT be cached
angular.module('ngCacheBuster', [])
  .config(['$httpProvider', function ($httpProvider) {
      return $httpProvider.interceptors.push('httpRequestInterceptorCacheBuster');
  }])
    .provider('httpRequestInterceptorCacheBuster', function () {

        this.matchlist = [/.*partials.*/, /.*views.*/];
        this.logRequests = false;

        // Default to whitelist (i.e. block all except matches)
        this.black = false;

        // Select blacklist or whitelist, default to whitelist
        this.setMatchlist = function (list, black) {
            this.black = typeof black != 'undefined' ? black : false
            this.matchlist = list;
        };


        this.setLogRequests = function (logRequests) {
            this.logRequests = logRequests;
        };

        this.$get = ['$q', '$log', function ($q, $log) {
            var matchlist = this.matchlist;
            var logRequests = this.logRequests;
            var black = this.black;
            if (logRequests) {
                $log.log("Blacklist? ", black);
            }
            return {
                'request': function (config) {
                    //Blacklist by default, match with whitelist
                    var busted = !black;

                    for (var i = 0; i < matchlist.length; i++) {
                        if (config.url.match(matchlist[i])) {
                            busted = black; break;
                        }
                    }

                    //Bust if the URL was on blacklist or not on whitelist
                    if (busted) {
                        var d = new Date();
                        config.url = config.url.replace(/[?|&]vv=\d+/, '');
                        //Some url's allready have '?' attached
                        config.url += config.url.indexOf('?') === -1 ? '?' : '&'
                        config.url += 'vv=' + d.getTime();
                    }

                    if (logRequests) {
                        var log = 'request.url =' + config.url
                        busted ? $log.warn(log) : $log.info(log)
                    }

                    return config || $q.when(config);
                }
            }
        }];
    });