export default function(scenario, assert, lastNthRequest) {
  // lastNthRequest should return a
  // {
  //   method: '',
  //   requestBody: '',
  //   requestHeaders: ''
  // }
  scenario
    .then('the last $method requests included from yaml\n$yaml', function(method, data) {
      const requests = lastNthRequest(null, method);
      const a = new Set(data);
      const b = new Set(
        requests.map(function(item) {
          return item.url;
        })
      );
      const diff = new Set(
        [...a].filter(function(item) {
          return !b.has(item);
        })
      );
      assert.equal(diff.size, 0, `Expected requests "${[...diff].join(', ')}"`);
    })
    .then('a $method request was made to "$endpoint"', function(method, url) {
      const requests = lastNthRequest(null, method);
      const request = requests.find(function(item) {
        return method === item.method && url === item.url;
      });
      assert.ok(request, `Expected a ${method} request url to ${url}`);
    })
    .then('a $method request was made to "$endpoint" with no body', function(method, url) {
      const requests = lastNthRequest(null, method);
      const request = requests.find(function(item) {
        return method === item.method && url === item.url;
      });
      assert.equal(
        request.requestBody,
        null,
        `Expected the request body to be null, was ${request.requestBody}`
      );
    })
    .then('a $method request was made to "$endpoint" with the body "$body"', function(
      method,
      url,
      body
    ) {
      const requests = lastNthRequest(null, method);
      const request = requests.find(function(item) {
        return method === item.method && url === item.url;
      });
      assert.ok(request, `Expected a ${method} request url to ${url} with the body "${body}"`);
    })
    .then('a $method request was made to "$endpoint" from yaml\n$yaml', function(
      method,
      url,
      yaml
    ) {
      const requests = lastNthRequest(null, method);
      const request = requests.find(function(item) {
        return method === item.method && url === item.url;
      });
      let data = yaml.body || {};
      const body = JSON.parse(request.requestBody);
      Object.keys(data).forEach(function(key, i, arr) {
        assert.deepEqual(
          body[key],
          data[key],
          `Expected the payload to contain ${key} equaling ${JSON.stringify(
            data[key]
          )}, ${key} was ${JSON.stringify(body[key])}`
        );
      });
      data = yaml.headers || {};
      const headers = request.requestHeaders;
      Object.keys(data).forEach(function(key, i, arr) {
        assert.deepEqual(
          headers[key],
          data[key],
          `Expected the payload to contain ${key} equaling ${JSON.stringify(
            data[key]
          )}, ${key} was ${JSON.stringify(headers[key])}`
        );
      });
    })
    .then('a $method request was made to "$endpoint" without properties from yaml\n$yaml', function(
      method,
      url,
      properties
    ) {
      const requests = lastNthRequest(null, method);
      const request = requests.find(function(item) {
        return method === item.method && url === item.url;
      });
      const body = JSON.parse(request.requestBody);
      properties.forEach(function(key, i, arr) {
        assert.equal(
          typeof body[key],
          'undefined',
          `Expected payload to not have a ${key} property`
        );
      });
    });
}