/**
 * @license
 * Copyright 2016 Alfresco Software, Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import {it, describe, beforeEach, expect} from 'angular2/testing';
import {provide, Injector} from 'angular2/core';
import {Http, HTTP_PROVIDERS, XHRBackend} from 'angular2/http';
import {MockBackend} from 'angular2/http/testing';
import {UploadService} from '../../src/services/upload.service';
import {FileModel} from '../../src/models/file.model';

describe('AlfrescoUploadService', () => {
    let service,
        options,
        xhr,
        doneFn,
        errorFn;

    beforeEach(() => {
        jasmine.Ajax.install();

        doneFn = jasmine.createSpy("success");
        errorFn = jasmine.createSpy("error");
        xhr = new XMLHttpRequest();
        xhr.onreadystatechange = function () {
            if (this.readyState == this.DONE && this.status == 200) {
                doneFn(this.responseText);
            } else if (this.readyState == this.DONE && this.status == 404) {
                errorFn(this.responseText);
            }
        };
        xhr.abort = jasmine.createSpy('abort');

        options = {
            url: '/some/cool/url',
            withCredentials: true,
            authToken: btoa('fakeadmin:fakeadmin'),
            authTokenPrefix: 'Basic',
            fieldName: 'fakeFileData',
            formFields: {
                siteid: 'fakeSite',
                containerid: 'fakeFolder'
            }
        };
        service = new UploadService(options);
    });

    afterEach(() => {
        jasmine.Ajax.uninstall();
    });

    it('should return an empty queue if no elements are added', () => {
        expect(service.getQueue().length).toEqual(0);
    });

    it('should add an element in the queue and returns it', () => {
        service.setXMLHttpRequest(xhr);
        let filesFake = [{name: 'fake-name', size: 10}];
        service.addToQueue(filesFake);
        expect(service.getQueue().length).toEqual(1);
    });

    it('should add two elements in the queue and returns them', () => {
        service.setXMLHttpRequest(xhr);
        let filesFake = [{name: 'fake-name', size: 10}, {name: 'fake-name2', size: 20} ];
        service.addToQueue(filesFake);
        expect(service.getQueue().length).toEqual(2);
    });

    it('should make XHR done request after the file is added in the queue', () => {
        service.setXMLHttpRequest(xhr);
        let filesFake = [{name: 'fake-name', size: 10}];
        service.addToQueue(filesFake);

        expect(jasmine.Ajax.requests.mostRecent().url).toBe('/some/cool/url');
        expect(doneFn).not.toHaveBeenCalled();
        jasmine.Ajax.requests.mostRecent().respondWith({
            "status": 200,
            contentType: 'text/plain',
            responseText: 'File uploaded'
        });
        expect(doneFn).toHaveBeenCalledWith('File uploaded');
    });

    it('should make XHR error request after an error occur', () => {
        service.setXMLHttpRequest(xhr);
        let filesFake = [{name: 'fake-name', size: 10}];
        service.addToQueue(filesFake);

        expect(jasmine.Ajax.requests.mostRecent().url).toBe('/some/cool/url');
        expect(doneFn).not.toHaveBeenCalled();
        jasmine.Ajax.requests.mostRecent().respondWith({
            "status": 404,
            contentType: 'text/plain',
            responseText: 'Error file uploaded'
        });
        expect(errorFn).toHaveBeenCalledWith('Error file uploaded');
    });

    it('should make XHR abort request after the xhr abort is called', () => {
        service.setXMLHttpRequest(xhr);
        let filesFake = [{name: 'fake-name', size: 10}];
        service.addToQueue(filesFake);
        let file = service.getQueue();
        file[0].setAbort();
        expect(xhr.abort).toHaveBeenCalled();
    });

    it('should make XHR done request after the file is upload', () => {
        service.setXMLHttpRequest(xhr);
        let filesFake = {name: 'fake-name', size: 10};

        let uploadingFileModel = new FileModel(filesFake)
        service.uploadFile(uploadingFileModel);

        expect(jasmine.Ajax.requests.mostRecent().url).toBe('/some/cool/url');
        expect(doneFn).not.toHaveBeenCalled();
        jasmine.Ajax.requests.mostRecent().respondWith({
            "status": 200,
            contentType: 'text/plain',
            responseText: 'File uploaded'
        });
        expect(doneFn).toHaveBeenCalledWith('File uploaded');
    });

});