import {inject, TestBed} from "@angular/core/testing";
import {BaseRequestOptions, Http, Response, ResponseOptions} from "@angular/http";
import {MockBackend, MockConnection} from "@angular/http/testing";
import "rxjs/Rx";
import {NetworkService} from "./network.service";
import {Message} from "../../../../common/entities/Message";
import {SlimLoadingBarService} from "ng2-slim-loading-bar";


describe('NetworkService Success tests', () => {
  let connection: MockConnection = null;

  let testUrl = "/test/url";
  let testData = {data: "testData"};
  let testResponse = "testResponse";
  let testResponseMessage = new Message(null, testResponse);


  beforeEach(() => {
    TestBed.configureTestingModule({
      providers: [
        MockBackend,
        BaseRequestOptions,
        SlimLoadingBarService,
        {
          provide: Http, useFactory: (backend, options) => {
          return new Http(backend, options);
        }, deps: [MockBackend, BaseRequestOptions]
        },
        NetworkService
      ]
    });
  });


  beforeEach(inject([MockBackend], (backend) => {

    backend.connections.subscribe((c) => {
      connection = c;
      connection.mockRespond(new Response(
        new ResponseOptions(
          {
            body: testResponseMessage
          }
        )));
    });
  }));

  afterEach(() => {

    expect(connection.request.url).toBe("/api" + testUrl);
  });

  it('should call GET', inject([NetworkService], (networkService) => {

    networkService.getJson(testUrl).then((res: any) => {
      expect(res).toBe(testResponse);
    });

  }));

  it('should call POST', inject([NetworkService, MockBackend], (networkService) => {

    networkService.postJson(testUrl, testData).then((res: any) => {
      expect(res).toBe(testResponse);
    });
    expect(connection.request.text()).toBe(JSON.stringify(testData));


    networkService.postJson(testUrl).then((res: any) => {
      expect(res).toBe(testResponse);
    });
    expect(connection.request.text()).toBe(JSON.stringify({}));
  }));

  it('should call PUT', inject([NetworkService, MockBackend], (networkService) => {

    networkService.putJson(testUrl, testData).then((res: any) => {
      expect(res).toBe(testResponse);
    });

    expect(connection.request.text()).toBe(JSON.stringify(testData));


    networkService.putJson(testUrl).then((res: any) => {
      expect(res).toBe(testResponse);
    });
    expect(connection.request.text()).toBe(JSON.stringify({}));

  }));

  it('should call DELETE', inject([NetworkService, MockBackend], (networkService) => {

    networkService.deleteJson(testUrl).then((res: any) => {
      expect(res).toBe(testResponse);
    });
  }));
});


describe('NetworkService Fail tests', () => {
  let connection: MockConnection = null;

  let testUrl = "/test/url";
  let testData = {data: "testData"};
  let testError = "testError";

  beforeEach(() => {
    TestBed.configureTestingModule({
      providers: [
        MockBackend,
        BaseRequestOptions,
        SlimLoadingBarService,

        {
          provide: Http, useFactory: (backend, options) => {
          return new Http(backend, options);
        }, deps: [MockBackend, BaseRequestOptions]
        },
        NetworkService
      ]
    });
  });

  beforeEach(inject([MockBackend], (backend) => {

    backend.connections.subscribe((c) => {
      connection = c;
      connection.mockError({name: "errorName", message: testError});

    });
  }));

  afterEach(() => {

    expect(connection.request.url).toBe("/api" + testUrl);
  });

  it('should call GET with error', inject([NetworkService], (networkService) => {

    networkService.getJson(testUrl).then((res: any) => {
      expect(res).toBe(null);
    }).catch((err) => {
      expect(err).toBe(testError);
    });

  }));

  it('should call POST with error', inject([NetworkService, MockBackend], (networkService) => {

    networkService.postJson(testUrl, testData).then((res: any) => {
      expect(res).toBe(null);
    }).catch((err) => {
      expect(err).toBe(testError);
    });
    expect(connection.request.text()).toBe(JSON.stringify(testData));
  }));

  it('should call PUT with error', inject([NetworkService, MockBackend], (networkService) => {

    networkService.putJson(testUrl, testData).then((res: any) => {
      expect(res).toBe(null);
    }).catch((err) => {
      expect(err).toBe(testError);
    });

    expect(connection.request.text()).toBe(JSON.stringify(testData));

  }));

  it('should call DELETE with error', inject([NetworkService, MockBackend], (networkService) => {

    networkService.deleteJson(testUrl).then((res: any) => {
      expect(res).toBe(null);
    }).catch((err) => {
      expect(err).toBe(testError);
    });
  }));
});