'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _events = require('../events');

var _events2 = _interopRequireDefault(_events);

var _eventHandler = require('../event-handler');

var _eventHandler2 = _interopRequireDefault(_eventHandler);

var _errors = require('../errors');

var _logger = require('../utils/logger');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * Decrypt key Loader
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               */

var KeyLoader = function (_EventHandler) {
  _inherits(KeyLoader, _EventHandler);

  function KeyLoader(hls) {
    _classCallCheck(this, KeyLoader);

    var _this = _possibleConstructorReturn(this, (KeyLoader.__proto__ || Object.getPrototypeOf(KeyLoader)).call(this, hls, _events2.default.KEY_LOADING));

    _this.loaders = {};
    _this.decryptkey = null;
    _this.decrypturl = null;
    return _this;
  }

  _createClass(KeyLoader, [{
    key: 'destroy',
    value: function destroy() {
      for (var loaderName in this.loaders) {
        var loader = this.loaders[loaderName];
        if (loader) {
          loader.destroy();
        }
      }
      this.loaders = {};
      _eventHandler2.default.prototype.destroy.call(this);
    }
  }, {
    key: 'onKeyLoading',
    value: function onKeyLoading(data) {
      var frag = data.frag,
          type = frag.type,
          loader = this.loaders[type],
          decryptdata = frag.decryptdata,
          uri = decryptdata.uri;
      // if uri is different from previous one or if decrypt key not retrieved yet
      if (uri !== this.decrypturl || this.decryptkey === null) {
        var config = this.hls.config;

        if (loader) {
          _logger.logger.warn('abort previous key loader for type:' + type);
          loader.abort();
        }
        frag.loader = this.loaders[type] = new config.loader(config);
        this.decrypturl = uri;
        this.decryptkey = null;

        var loaderContext = void 0,
            loaderConfig = void 0,
            loaderCallbacks = void 0;
        loaderContext = { url: uri, frag: frag, responseType: 'arraybuffer' };
        loaderConfig = { timeout: config.fragLoadingTimeOut, maxRetry: config.fragLoadingMaxRetry, retryDelay: config.fragLoadingRetryDelay, maxRetryDelay: config.fragLoadingMaxRetryTimeout };
        loaderCallbacks = { onSuccess: this.loadsuccess.bind(this), onError: this.loaderror.bind(this), onTimeout: this.loadtimeout.bind(this) };
        frag.loader.load(loaderContext, loaderConfig, loaderCallbacks);
      } else if (this.decryptkey) {
        // we already loaded this key, return it
        decryptdata.key = this.decryptkey;
        this.hls.trigger(_events2.default.KEY_LOADED, { frag: frag });
      }
    }
  }, {
    key: 'loadsuccess',
    value: function loadsuccess(response, stats, context) {
      var frag = context.frag;
      this.decryptkey = frag.decryptdata.key = new Uint8Array(response.data);
      // detach fragment loader on load success
      frag.loader = undefined;
      this.loaders[frag.type] = undefined;
      this.hls.trigger(_events2.default.KEY_LOADED, { frag: frag });
    }
  }, {
    key: 'loaderror',
    value: function loaderror(response, context) {
      var frag = context.frag,
          loader = frag.loader;
      if (loader) {
        loader.abort();
      }
      this.loaders[context.type] = undefined;
      this.hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.NETWORK_ERROR, details: _errors.ErrorDetails.KEY_LOAD_ERROR, fatal: false, frag: frag, response: response });
    }
  }, {
    key: 'loadtimeout',
    value: function loadtimeout(stats, context) {
      var frag = context.frag,
          loader = frag.loader;
      if (loader) {
        loader.abort();
      }
      this.loaders[context.type] = undefined;
      this.hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.NETWORK_ERROR, details: _errors.ErrorDetails.KEY_LOAD_TIMEOUT, fatal: false, frag: frag });
    }
  }]);

  return KeyLoader;
}(_eventHandler2.default);

exports.default = KeyLoader;