/**
 * Copyright (c) 2014 Petka Antonov
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:</p>
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * 
 */
"use strict";
module.exports = function(Promise, isPromiseArrayProxy) {
    var ASSERT = require("./assert.js");
    var util = require("./util.js");
    var async = require("./async.js");
    var errors = require("./errors.js");
    var tryCatch1 = util.tryCatch1;
    var errorObj = util.errorObj;

    Promise.prototype.progressed = function Promise$progressed(handler) {
        return this._then(void 0, void 0, handler,
                            void 0, void 0, this.progressed);
    };

    Promise.prototype._progress = function Promise$_progress(progressValue) {
        if (this._isFollowingOrFulfilledOrRejected()) return;
        this._progressUnchecked(progressValue);

    };

    Promise.prototype._progressHandlerAt =
    function Promise$_progressHandlerAt(index) {
        if (index === 0) return this._progressHandler0;
        return this[index + 2 - 5];
    };

    Promise.prototype._doProgressWith =
    function Promise$_doProgressWith(progression) {
        var progressValue = progression.value;
        var handler = progression.handler;
        var promise = progression.promise;
        var receiver = progression.receiver;

        this._pushContext();
        var ret = tryCatch1(handler, receiver, progressValue);
        this._popContext();

        if (ret === errorObj) {
            if (ret.e != null &&
                ret.e.name !== "StopProgressPropagation") {
                var trace = errors.canAttach(ret.e)
                    ? ret.e : new Error(ret.e + "");
                promise._attachExtraTrace(trace);
                promise._progress(ret.e);
            }
        }
        else if (Promise.is(ret)) {
            ret._then(promise._progress, null, null, promise, void 0,
                this._progress);
        }
        else {
            promise._progress(ret);
        }
    };


    Promise.prototype._progressUnchecked =
    function Promise$_progressUnchecked(progressValue) {
        if (!this.isPending()) return;
        var len = this._length();

        for (var i = 0; i < len; i += 5) {
            var handler = this._progressHandlerAt(i);
            var promise = this._promiseAt(i);
            if (!Promise.is(promise)) {
                var receiver = this._receiverAt(i);
                if (typeof handler === "function") {
                    handler.call(receiver, progressValue, promise);
                }
                else if (Promise.is(receiver) && receiver._isProxied()) {
                    receiver._progressUnchecked(progressValue);
                }
                else if (isPromiseArrayProxy(receiver, promise)) {
                    receiver._promiseProgressed(progressValue, promise);
                }
                continue;
            }

            if (typeof handler === "function") {
                this._doProgressWith(({handler: handler,
promise: promise,
receiver: this._receiverAt(i),
value: progressValue}));
            }
            else {
                promise._progress(progressValue);
            }
        }
    };
};
