import * as got from 'got';
import FormData from 'form-data';
import { processBody, handler, defaultOptionsHandler } from '../../src/GotRequester';

const MockGot = got as unknown as jest.Mock;

jest.mock('got');

describe('processBody', () => {
  it('should return a json object if type is application/json', () => {
    const output = processBody({
      rawBody: Buffer.from(JSON.stringify({ test: 5 })),
      headers: { 'content-type': 'application/json' },
    });

    expect(output).toMatchObject({ test: 5 });
  });

  it('should return a empty json object if type is application/json and rawBody length is 0', () => {
    const output = processBody({
      rawBody: Buffer.from(''),
      headers: { 'content-type': 'application/json' },
    });

    expect(output).toMatchObject({});
  });

  it('should return a string if type is text/<subtype>', () => {
    const output = processBody({
      rawBody: Buffer.from('test'),
      headers: { 'content-type': 'text/plain' },
    });

    expect(typeof output).toBe('string');
    expect(output).toEqual('test');
  });

  it('should return a buffer if type is octet-stream, binary, or gzip', () => {
    const output = [
      processBody({
        rawBody: Buffer.from('test'),
        headers: { 'content-type': 'application/octet-stream' },
      }),
      processBody({
        rawBody: Buffer.from('test'),
        headers: { 'content-type': 'binary/octet-stream' },
      }),
      processBody({
        rawBody: Buffer.from('test'),
        headers: { 'content-type': 'image/png' },
      }),
      processBody({
        rawBody: Buffer.from('test'),
        headers: { 'content-type': 'application/gzip' },
      }),
    ];

    output.forEach((o) => expect(o).toBeInstanceOf(Buffer));
  });

  it('should return a the exact rawBody given when presented with an unknown content-type', () => {
    const output = processBody({
      rawBody: Buffer.from('6'),
      headers: { 'content-type': 'fake' },
    });

    expect(output).toBeInstanceOf(Buffer);
    expect(output.toString()).toBe('6');
  });

  it('should return a empty string when presented with an unknown content-type and undefined rawBody', () => {
    const output = processBody({
      rawBody: Buffer.from(''),
      headers: { 'content-type': 'fake' },
    });

    expect(output).toBeInstanceOf(Buffer);
    expect(output.length).toBe(0);
  });
});

describe('handler', () => {
  it('should return an error with a description when response has an error prop', async () => {
    const stringBody = JSON.stringify({ error: 'msg' });

    MockGot.mockImplementationOnce(() => {
      const e = { response: { body: stringBody } };
      return Promise.reject(e);
    });

    await expect(handler('http://test.com', {})).rejects.toStrictEqual({
      description: 'msg',
      response: {
        body: stringBody,
      },
    });
  });

  it('should throw error without description if no response information is present', async () => {
    MockGot.mockImplementationOnce(() => {
      const e = {};
      return Promise.reject(e);
    });

    await expect(handler('http://test.com', {})).rejects.toStrictEqual({});
  });

  it('should return an error with a description when response has an message prop', async () => {
    const stringBody = JSON.stringify({ message: 'msg' });

    MockGot.mockImplementationOnce(() => {
      const e = { response: { body: stringBody } };
      return Promise.reject(e);
    });

    await expect(handler('http://test.com', {})).rejects.toStrictEqual({
      description: 'msg',
      response: {
        body: stringBody,
      },
    });
  });

  it('should return correct properties if request is valid', async () => {
    MockGot.mockImplementationOnce(() => ({
      statusCode: 404,
      headers: {},
      rawBody: '{}',
    }));

    const output = await handler('http://test.com', {});

    expect(output).toMatchObject({
      body: {},
      headers: {},
      status: 404,
    });
  });
});

describe('defaultRequest', () => {
  const service = {
    headers: { test: '5' },
    url: 'testurl',
    requestTimeout: 50,
    rejectUnauthorized: true,
  };

  it('should replace rawBody property with json property if the rawBody type is an object but not FormData', () => {
    const output1 = defaultOptionsHandler(service, { body: { key: 1 } });

    expect(output1.body).toBeUndefined();
    expect(output1.json).toMatchObject({ key: 1 });

    const output2 = defaultOptionsHandler(service, { body: new FormData() });

    expect(output2.body).toBeInstanceOf(FormData);
    expect(output2.json).toBeUndefined();
  });

  it('should not assign the https property if given https url and not rejectUnauthorized', () => {
    const { https } = defaultOptionsHandler(
      { ...service, url: 'https://test.com' },
      { method: 'post' },
    );

    expect(https).toBeUndefined();
  });

  it('should not assign the https property if given http url and rejectUnauthorized', () => {
    const { https } = defaultOptionsHandler(
      { ...service, url: 'http://test.com' },
      { method: 'post' },
    );

    expect(https).toBeUndefined();
  });

  it('should assign the https property if given https url and rejectUnauthorized is false', () => {
    const { https: https1 } = defaultOptionsHandler(
      { ...service, url: 'https://test.com', rejectUnauthorized: false },
      { method: 'post' },
    );

    expect(https1).toMatchObject({ rejectUnauthorized: false });

    const { https: https2 } = defaultOptionsHandler(
      { ...service, url: 'https://test.com', rejectUnauthorized: true },
      { method: 'post' },
    );

    expect(https2).toBeUndefined();

    const { https: https3 } = defaultOptionsHandler(
      { ...service, url: 'https://test.com' },
      { method: 'post' },
    );

    expect(https3).toBeUndefined();
  });
});