/*
 * 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 {
  SCBulkAddResponse,
  SCBulkAddRoute,
  SCBulkDoneResponse,
  SCBulkDoneRoute,
  SCBulkResponse,
  SCBulkRoute,
  SCThing,
} from '@openstapps/core';
import * as chai from 'chai';
import * as chaiAsPromised from 'chai-as-promised';
import * as chaiSpies from 'chai-spies';
import {existsSync, mkdirSync, rmdirSync, unlinkSync} from 'fs';
import {suite, test} from 'mocha-typescript';
import {join} from 'path';
import {getItemsFromSamples, indexSamples} from '../src/e2e';
import {ApiError} from '../src/errors';
import {HttpClient, RequestOptions, Response} from '../src/http-client';
import {RecursivePartial} from './client.spec';
import {createFileSync} from 'fs-extra';

chai.should();
chai.use(chaiSpies);
chai.use(chaiAsPromised);

const sandbox = chai.spy.sandbox();

const bulkRoute = new SCBulkRoute();
const bulkAddRoute = new SCBulkAddRoute();
const bulkDoneRoute = new SCBulkDoneRoute();

const httpClient = new HttpClient();

@suite
export class E2EConnectorSpec {
  async after() {
    sandbox.restore();
  }

  @test
  getCoreTestSamples() {
    return getItemsFromSamples('./node_modules/@openstapps/core/test/resources')
    .then(<T extends SCThing>(items: T[]) => {
      // tslint:disable-next-line: no-unused-expression
      chai.expect(items).to.not.be.a.instanceof(Error);
      // tslint:disable-next-line: no-unused-expression
      chai.expect(items).to.not.be.empty;
    });
  }

  @test
  getCoreTestSamplesShouldFail() {
    return getItemsFromSamples('./nonexistantdirectory')
    .then(<T extends SCThing>(items: T[]) => {
      // tslint:disable-next-line: no-unused-expression
      chai.expect(items).to.be.a.instanceof(Error);
    });
  }

  @test
  async index() {
    type responses = Response<SCBulkAddResponse | SCBulkDoneResponse | SCBulkResponse>;

    sandbox.on(httpClient, 'request', async (request: RequestOptions): Promise<RecursivePartial<responses>> => {
      if (request.url.toString() === 'http://localhost' + bulkRoute.getUrlFragment().toString()) {
        return {
          body: {
            state: 'in progress',
            uid: 'foo',
          },
          statusCode: bulkRoute.statusCodeSuccess,
        };
      } else if (request.url.toString() === 'http://localhost' + bulkAddRoute.getUrlFragment({
        UID: 'foo',
      }).toString()) {
        return {
          body: {},
          statusCode: bulkAddRoute.statusCodeSuccess,
        };
      }

      return {
        body: {},
        statusCode: bulkDoneRoute.statusCodeSuccess,
      };
    });
    await indexSamples(httpClient, {to: 'http://localhost', samples: './node_modules/@openstapps/core/test/resources'});
  }

  @test
  async indexShouldFail() {
    type responses = Response<SCBulkAddResponse | SCBulkDoneResponse | SCBulkResponse>;

    sandbox.on(httpClient, 'request', async (): Promise<RecursivePartial<responses>> => {
      return {
        body: {},
        statusCode: Number.MAX_SAFE_INTEGER,
      };
    });
    return indexSamples(httpClient, {to: 'http://localhost', samples: './node_modules/@openstapps/core/test/resources'})
    .should.be.rejectedWith(ApiError);
  }

  @test
  async indexShouldFailDirectoryWithoutData() {
    const emptyDirPath = join(__dirname, 'emptyDir');
    if(!existsSync(emptyDirPath))
      mkdirSync(emptyDirPath);
    await indexSamples(httpClient, {to: 'http://localhost', samples: emptyDirPath})
    .should.be.rejectedWith('Could not index samples. None were retrived from the file system.');
    rmdirSync(emptyDirPath);
  }

  @test
  async indexShouldFailDirectoryWithoutJsonData() {
    const somewhatFilledDirPath = join(__dirname, 'somewhatFilledDir');
    if(!existsSync(somewhatFilledDirPath))
      mkdirSync(somewhatFilledDirPath);
    const nonJsonFile = join (somewhatFilledDirPath, 'nonjson.txt');
    createFileSync(nonJsonFile);
    await indexSamples(httpClient, {to: 'http://localhost', samples: somewhatFilledDirPath})
    .should.be.rejectedWith('Could not index samples. None were retrived from the file system.');
    unlinkSync(nonJsonFile);
    rmdirSync(somewhatFilledDirPath);
  }
  
}