/**       */

import chaiAsPromised from 'chai-as-promised';
import chai, { expect } from 'chai';
import chaiNock from 'chai-nock';
import assert from 'assert';
import fs from 'fs';

import PubNub from '../../src/node';

chai.use(chaiAsPromised);
chai.use(chaiNock);

describe('File Upload API v1 tests', () => {
  const ORIGIN = undefined;

  const TEST_PREFIX = 'javascript-fileUploadApiV1-tests';
  const UUID = `${TEST_PREFIX}-main`;
  const UUID_1 = `${TEST_PREFIX}-uuid-1`;

  const CHANNEL_1 = `demo-channel`;

  const FILE_1 = `${TEST_PREFIX}-file-1`;

  let pubnub: PubNub;

  describe('with encryption', () => {
    pubnub = new PubNub({
      subscribeKey: process.env.SUBSCRIBE_KEY || 'demo',
      publishKey: process.env.PUBLISH_KEY || 'demo',
      uuid: UUID,
      origin: ORIGIN,
      cipherKey: 'abcdef',
      // logVerbosity: true,
    });

    runTests(pubnub);
  });

  describe('without encryption', () => {
    pubnub = new PubNub({
      subscribeKey: process.env.SUBSCRIBE_KEY || 'demo',
      publishKey: process.env.PUBLISH_KEY || 'demo',
      origin: ORIGIN,
      uuid: UUID,
    });

    runTests(pubnub);
  });

  function runTests(pubnub: PubNub) {
    it('should export File class in PubNub instance', async () => {
      expect(pubnub.File).to.exist;
    });

    it('should handle node.js streams', async () => {
      const testFile = fs.createReadStream(`${__dirname}/input.json`);

      const result = await pubnub.sendFile({
        channel: CHANNEL_1,
        message: { test: 'message', value: 42 },
        file: { stream: testFile, name: 'input.json' },
      });

      expect(result.name).to.equal('input.json');

      const file = await pubnub.downloadFile({ name: result.name, id: result.id, channel: CHANNEL_1 });

      const fileStream = await file.toStream();
      const outputStream = fs.createWriteStream(`${__dirname}/output.json`);

      fileStream.pipe(outputStream);

      outputStream.once('end', () => {
        const expectedFileBuffer = fs.readFileSync(`${__dirname}/input.json`);
        const actualFileBuffer = fs.readFileSync(`${__dirname}/output.json`);

        expect(actualFileBuffer.toString('utf8')).to.equal(expectedFileBuffer.toString('utf8'));
      });
    }).timeout(20000);

    it('should handle node.js buffers', async () => {
      const testContent = `Hello world! ${new Date().toLocaleString()}`;

      const result = await pubnub.sendFile({
        message: { myMessage: 42 },
        channel: CHANNEL_1,
        file: { data: Buffer.from(testContent), name: 'myFile.txt', mimeType: 'text/plain' },
      });

      expect(result.name).to.equal('myFile.txt');

      const file = await pubnub.downloadFile({
        channel: CHANNEL_1,
        id: result.id,
        name: result.name,
      });

      const output = await file.toBuffer();

      expect(output.toString('utf8')).to.equal(testContent);
    }).timeout(10000);

    let fileId: string;
    let fileName: string;

    it('should handle strings', (done) => {
      const testContent = `Hello world! ${new Date().toLocaleString()}`;

      pubnub.sendFile(
        {
          channel: CHANNEL_1,
          file: { data: testContent, name: 'someFile.txt', mimeType: 'text/plain' },
        },
        (err, result) => {
          try {
            expect(err.error).to.be.false;

            assert(result !== null);
            expect(result.name).to.equal('someFile.txt');
          } catch (error) {
            done(error);
            return;
          }

          pubnub.downloadFile(
            {
              channel: CHANNEL_1,
              id: result.id,
              name: result.name,
            },
            (err2, file) => {
              fileId = result.id;
              fileName = result.name;

              assert(file !== null);
              const output = file.toString('utf8').then((output) => {
                try {
                  expect(output).to.equal(testContent);

                  done();
                } catch (error) {
                  done(error);
                }
              });
            },
          );
        },
      );
    }).timeout(10000);

    it('should list all available files on a channel', async () => {
      const result = await pubnub.listFiles({ channel: CHANNEL_1, limit: 10 });

      expect(result.status).to.equal(200);
      expect(result.data).to.have.length.greaterThan(0);
    });

    it('should handle file delete', async () => {
      const result = await pubnub.deleteFile({ channel: CHANNEL_1, id: fileId, name: fileName });

      expect(result.status).to.equal(200);
    });
    it('should handle encryption/decryption with explicit cipherKey', (done) => {
      const testContent = `Hello world! ${new Date().toLocaleString()}`;

      pubnub.sendFile(
        {
          channel: CHANNEL_1,
          file: { data: testContent, name: 'someFile.txt', mimeType: 'text/plain' },
          cipherKey: 'cipherKey',
        },
        (err, result) => {
          try {
            expect(err.error).to.be.false;

            assert(result !== null);
            expect(result.name).to.equal('someFile.txt');
          } catch (error) {
            done(error);
          }

          pubnub.downloadFile(
            {
              channel: CHANNEL_1,
              id: result!.id,
              name: result!.name,
              cipherKey: 'cipherKey',
            },
            (err2, file) => {
              fileId = result!.id;
              fileName = result!.name;

              assert(file !== null);
              const output = file.toString('utf8').then((output) => {
                try {
                  expect(output).to.equal(testContent);

                  done();
                } catch (error) {
                  done(error);
                }
              });
            },
          );
        },
      );
    }).timeout(10000);
  }
});