/*
 * Copyright (C) 2019 StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
import {TestBed} from '@angular/core/testing';
import {SCIndexResponse} from '@openstapps/core';
import {StAppsWebHttpClient} from '../data/data.provider';
import {StorageProvider} from '../storage/storage.provider';
import {ConfigProvider, STORAGE_KEY_CONFIG} from './config.provider';
import {
  ConfigFetchError,
  ConfigInitError,
  SavedConfigNotAvailable,
  WrongConfigVersionInStorage,
} from './errors';

describe('ConfigProvider', () => {
  let configProvider: ConfigProvider;
  let storageProviderSpy: jasmine.SpyObj<StorageProvider>;

  beforeEach(() => {
    const storageProviderMethodSpy = jasmine.createSpyObj('StorageProvider', ['init', 'get', 'has', 'put']);
    const webHttpClientMethodSpy = jasmine.createSpyObj('StAppsWebHttpClient', ['request']);

    TestBed.configureTestingModule({
      imports: [],
      providers: [
        ConfigProvider,
        {
          provide: StorageProvider, useValue: storageProviderMethodSpy,
        },
        {
          provide: StAppsWebHttpClient, useValue: webHttpClientMethodSpy,
        },
      ],
    });

    configProvider = TestBed.get(ConfigProvider);
    storageProviderSpy = TestBed.get(StorageProvider);
  });

  it('should fetch app configuration', async () => {
    spyOn(configProvider.client, 'handshake').and.returnValue(sampleIndexResponse);
    const result = await configProvider.fetch();
    expect(result).toEqual(sampleIndexResponse);
  });

  it('should throw error on fetch with error response', async () => {
    spyOn(configProvider.client, 'handshake').and.throwError('');
    let error = new Error('');
    try {
      await configProvider.fetch();
    } catch (err) {
      error = err;
    }
    expect(error).toEqual(new ConfigFetchError());
  });

  it('should init from remote and saved config not available', async () => {
    storageProviderSpy.has.and.returnValue(false);
    spyOn(configProvider.client, 'handshake').and.returnValue(sampleIndexResponse);
    try {
      await configProvider.init();
    } catch (error) {
      expect(error).toEqual(new SavedConfigNotAvailable());
    }
    expect(storageProviderSpy.has).toHaveBeenCalled();
    expect(storageProviderSpy.get).toHaveBeenCalledTimes(0);
    expect(configProvider.client.handshake).toHaveBeenCalled();
    expect(configProvider.initialised).toBe(true);
    expect(await configProvider.getValue('name')).toEqual(sampleIndexResponse.app.name);
  });

  it('should init from storage with remote fails', async () => {
    storageProviderSpy.has.and.returnValue(true);
    storageProviderSpy.get.and.returnValue(sampleIndexResponse);
    spyOn(configProvider.client, 'handshake').and.throwError('');
    let error = new Error('');
    try {
      await configProvider.init();
    } catch (err) {
      error = err;
    }
    expect(error).toEqual(new ConfigFetchError());
    expect(storageProviderSpy.has).toHaveBeenCalled();
    expect(storageProviderSpy.get).toHaveBeenCalled();
    expect(configProvider.initialised).toBe(true);
    expect(await configProvider.getValue('name')).toEqual(sampleIndexResponse.app.name);
  });

  it('should throw error on failed initialisation', async () => {
    storageProviderSpy.has.and.returnValue(false);
    spyOn(configProvider.client, 'handshake').and.throwError('');
    let error = null;
    try {
      await configProvider.init();
    } catch (err) {
      error = err;
    }
    expect(error).toEqual(new ConfigInitError());
  });

  it('should throw error on wrong config version in storage', async () => {
    storageProviderSpy.has.and.returnValue(true);
    const wrongConfig = JSON.parse(JSON.stringify(sampleIndexResponse));
    wrongConfig.backend.SCVersion = '0.1.0';
    storageProviderSpy.get.and.returnValue(wrongConfig);
    spyOn(configProvider.client, 'handshake').and.returnValue(sampleIndexResponse);
    let error = null;
    try {
      await configProvider.init();
    } catch (err) {
      error = err;
    }
    expect(error).toEqual(new WrongConfigVersionInStorage('1.0.0', '0.1.0'));
  });

  it('should throw error on saved app configuration not available', async () => {
    storageProviderSpy.has.and.returnValue(false);
    let error = new Error('');
    try {
      await configProvider.loadLocal();
    } catch (err) {
      error = err;
    }
    expect(error).toEqual(new SavedConfigNotAvailable());
  });

  it('should save app configuration', async () => {
    await configProvider.save(sampleIndexResponse);
    expect(storageProviderSpy.put).toHaveBeenCalledWith(STORAGE_KEY_CONFIG, sampleIndexResponse);
  });

  it('should set app configuration', async () => {
    await configProvider.set(sampleIndexResponse);
    expect(storageProviderSpy.put).toHaveBeenCalled();
  });

  it('should return app configuration value', async () => {
    storageProviderSpy.has.and.returnValue(true);
    storageProviderSpy.get.and.returnValue(sampleIndexResponse);
    spyOn(configProvider.client, 'handshake').and.returnValue(sampleIndexResponse);
    await configProvider.init();
    expect(await configProvider.getValue('name')).toEqual(sampleIndexResponse.app.name);
  });

  it('should return app configuration value if only saved config is available and fetch fails', async () => {
    storageProviderSpy.has.and.returnValue(true);
    storageProviderSpy.get.and.returnValue(sampleIndexResponse);
    spyOn(configProvider.client, 'handshake').and.throwError('');
    expect(await configProvider.getValue('name')).toEqual(sampleIndexResponse.app.name);
  });
});

const sampleIndexResponse: SCIndexResponse = {
  app: {
    campusPolygon: {
      coordinates: [[[1, 2]], [[1, 2]]],
      type: 'Polygon',
    },
    features: {
      widgets: false,
    },
    menus: [
      {
        icon: 'icon',
        id: 'main',
        items: [
          {
            icon: 'icon',
            route: '/index',
            title: 'start',
            translations: {
              de: {
                title: 'Start',
              },
              en: {
                title: 'start',
              },
            },
          },

        ],
        name: 'main',
        translations: {
          de: {
            name: 'Haupt',
          },
          en: {
            name: 'main',
          },
        },
      },
    ],
    name: 'StApps',
    privacyPolicyUrl: 'foo.bar',
    settings: [
      {
        categories: ['credentials'],
        input: {
          defaultValue: '',
          inputType: 'text',
        },
        name: 'username',
        order: 0,
        origin: {
          indexed: '2018-09-11T12:30:00Z',
          name: 'Dummy',
        },
        translations: {
          de: {
            categories: ['Anmeldedaten'],
            name: 'Benutzername',
          },
          en: {
            categories: ['Credentials'],
            name: 'Username',
          },
        },
        type: 'setting',
        uid: '',
      },
    ],
  },
  backend: {
    SCVersion: '1.0.0',
    hiddenTypes: [
      'date series',
      'diff',
      'floor',
    ],
    name: 'Technische Universität Berlin',
    namespace: '909a8cbc-8520-456c-b474-ef1525f14209',
    sortableFields: [
      {
        fieldName: 'name',
        sortTypes: ['ducet'],
      },
      {
        fieldName: 'type',
        sortTypes: ['ducet'],
      },
      {
        fieldName: 'categories',
        onlyOnTypes: [
          'academic event',
          'building',
          'catalog',
          'dish',
          'point of interest',
          'room',
        ],
        sortTypes: ['ducet'],
      },
      {
        fieldName: 'geo.point.coordinates',
        onlyOnTypes: [
          'building',
          'point of interest',
          'room',
        ],
        sortTypes: ['distance'],
      },
      {
        fieldName: 'geo.point.coordinates',
        onlyOnTypes: [
          'building',
          'point of interest',
          'room',
        ],
        sortTypes: ['distance'],
      },
      {
        fieldName: 'inPlace.geo.point.coordinates',
        onlyOnTypes: [
          'date series',
          'dish',
          'floor',
          'organization',
          'point of interest',
          'room',
          'ticket',
        ],
        sortTypes: ['distance'],
      },
      {
        fieldName: 'offers',
        onlyOnTypes: [
          'dish',
        ],
        sortTypes: ['price'],
      },
    ],
  },
};