/**
 * API specs
 *
 * Tests for generic overarching HTTP API related features not related to any
 * specific part of the data model or domain. For example: tests for versioning
 * and openapi definitions.
 */

const assert = require('assert');
const supertest = require(__dirname + '/../../../../src/node_modules/supertest');
const fs = require('fs');
const settings = require(__dirname + '/../../../../src/node/utils/Settings');
const api = supertest('http://' + settings.ip + ':' + settings.port);
const path = require('path');

var validateOpenAPI = require(__dirname + '/../../../../src/node_modules/openapi-schema-validation').validate;

var filePath = path.join(__dirname, '../../../../APIKEY.txt');

var apiKey = fs.readFileSync(filePath, { encoding: 'utf-8' });
apiKey = apiKey.replace(/\n$/, '');
var apiVersion = 1;

var testPadId = makeid();

describe('API Versioning', function() {
  it('errors if can not connect', function(done) {
    api
      .get('/api/')
      .expect(function(res) {
        apiVersion = res.body.currentVersion;
        if (!res.body.currentVersion) throw new Error('No version set in API');
        return;
      })
      .expect(200, done);
  });
});

describe('OpenAPI definition', function() {
  it('generates valid openapi definition document', function(done) {
    api
      .get('/api/openapi.json')
      .expect(function(res) {
        const { valid, errors } = validateOpenAPI(res.body, 3);
        if (!valid) {
          const prettyErrors = JSON.stringify(errors, null, 2);
          throw new Error(`Document is not valid OpenAPI. ${errors.length} validation errors:\n${prettyErrors}`);
        }
        return;
      })
      .expect(200, done);
  });
});

describe('jsonp support', function() {
  it('supports jsonp calls', function(done) {
    api
      .get(endPoint('createPad') + '&jsonp=jsonp_1&padID=' + testPadId)
      .expect(function(res) {
        if (!res.text.match('jsonp_1')) throw new Error('no jsonp call seen');
      })
      .expect('Content-Type', /javascript/)
      .expect(200, done);
  });
});

var endPoint = function(point) {
  return '/api/' + apiVersion + '/' + point + '?apikey=' + apiKey;
};

function makeid() {
  var text = '';
  var possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';

  for (var i = 0; i < 5; i++) {
    text += possible.charAt(Math.floor(Math.random() * possible.length));
  }
  return text;
}