import { TestBed, getTestBed, inject, async } from '@angular/core/testing';
import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing';
import { NgLoggerModule, Level } from '@nsalaun/ng-logger';
import { Logger } from '../../providers/logger/logger';
import {
  TranslateModule,
  TranslateService,
  TranslateLoader,
  TranslateFakeLoader
} from '@ngx-translate/core';
import { Platform } from 'ionic-angular';

describe('LoggerProvider', () => {
  let injector: TestBed;
  let service: Logger;
  let httpMock: HttpTestingController;

  beforeEach(() => {
    TestBed.configureTestingModule({
      imports: [
        HttpClientTestingModule,
        NgLoggerModule.forRoot(Level.LOG),
        TranslateModule.forRoot({
          loader: { provide: TranslateLoader, useClass: TranslateFakeLoader }
        })
      ],
      providers: [
        Logger,
        Platform
      ]
    });

    injector = getTestBed();
    service = injector.get(Logger);
    httpMock = injector.get(HttpTestingController);
  });

  it('should be able use optional params for errors', () => {
    service.error('So long and thanks for all the fish!', 'dolphins', 'mice', 'humans');
  });

  it('should be able use optional params for debug', () => {
    service.debug('The answer to life, the universe, and everything is 42.', 'dolphins', 'mice', 'humans');
  });

  it('should be able use optional params for warnings', () => {
    service.warn('Mostly harmless', 'dolphins', 'mice', 'humans');
  });

  it('should be able use optional params for info', () => {
    service.info("Who's going to dinner at the restaurant at the end of the universe?", 'Arthur', 'Zaphod', 'Trillian');
  });

  it('should get levels', () => {
    const levels = service.getLevels();
    expect(levels).toEqual([
      { level: 'error', weight: 1, label: 'Error' },
      { level: 'warn', weight: 2, label: 'Warning' },
      { level: 'info', weight: 3, label: 'Info', default: true },
      { level: 'debug', weight: 4, label: 'Debug' }
    ]);
  });

  it('should get weight', () => {
    let weight = service.getWeight(1);
    expect(weight).toEqual(
      { level: 'error', weight: 1, label: 'Error' }
    );
    weight = service.getWeight(2);
    expect(weight).toEqual(
      { level: 'warn', weight: 2, label: 'Warning' }
    );
    weight = service.getWeight(3);
    expect(weight).toEqual(
      { level: 'info', weight: 3, label: 'Info', default: true }
    );
    weight = service.getWeight(4);
    expect(weight).toEqual(
      { level: 'debug', weight: 4, label: 'Debug' }
    );
  });

  it('should get the defaul weight', () => {
    let defaultWeight = service.getDefaultWeight();
    expect(defaultWeight).toEqual(
      { level: 'info', weight: 3, label: 'Info', default: true }
    );
  });

  it('should get logs by filtered weight', () => {
    let filteredLogs;

    service.debug('Heart of Gold');
    service.debug('Volgon ship');
    filteredLogs = service.get(4);
    expect(filteredLogs.length).toBe(2);

    service.info("Don't panic");
    service.info("Take peanuts");
    service.info("Don't forget a towel");
    filteredLogs = service.get(3);
    expect(filteredLogs.length).toBe(3);

    service.error('Planet not found');
    filteredLogs = service.get(1);
    expect(filteredLogs.length).toBe(1);
  });

  it('should get logs when not filtered by weight', () => {
    service.warn('Beware the Bugblatter Beast of Traal');
    service.error('Heart of Gold has been stolen');
    service.info('Zaphod is President');
    service.debug('Marvin is depressed');

    let logs = service.get();

    expect(logs[0].msg).toEqual('Beware the Bugblatter Beast of Traal');
    expect(logs[1].msg).toEqual('Heart of Gold has been stolen');
    expect(logs[2].msg).toEqual('Zaphod is President');
    expect(logs[3].msg).toEqual('Marvin is depressed');
  });

  it('should process args', () => {
    let processedArgs = service.processingArgs(['bulldozer', 'bathrobe', 'satchel']);
    expect(processedArgs).toEqual('bulldozer bathrobe satchel');

    processedArgs = service.processingArgs('babel fish');
    expect(processedArgs).toEqual('b a b e l   f i s h');

    processedArgs = service.processingArgs(['babel', undefined, 'fish']);
    expect(processedArgs).toEqual('babel undefined fish');

    processedArgs = service.processingArgs(['babel', false, 'fish']);
    expect(processedArgs).toEqual('babel null fish');

    processedArgs = service.processingArgs(['babel', { message: 'Save the Humans' }, 'fish']);
    expect(processedArgs).toEqual('babel Save the Humans fish');

    processedArgs = service.processingArgs(['babel', { 'improbability': 'infinite' }, 'fish']);
    expect(processedArgs).toEqual('babel {"improbability":"infinite"} fish');

    // cyclical reference; yeah, baby! to break JSON.stringify
    let a = { b: { a: { } } };
    a.b.a = a;
    processedArgs = service.processingArgs(['babel', a, 'fish']);
    expect(processedArgs).toEqual('babel undefined fish');
  });
});