// API: http://localhost:1337/api/
import Restle from 'restle';

const restle = new Restle({
  port: 1337,
  database: 'mongodb://...',
  namespace: '/api',
  cors: ['http://localhost:4200', 'https://example.com']
});

// define schemas
const userSchema = {
  name: { attr: 'string' },
  birthday: { attr: 'date' },
  isMarried: { attr: 'boolean' },
  articles: { hasMany: 'article' },
  company: { belongsTo: 'company' },
};

const articleSchema = {
  title: { attr: 'string' },
  body: { attr: 'string' },
  createdOn: { attr: 'date' },
};

const companySchema = {
  name: { attr: 'string' },
  employees: { hasMany: 'user' },
};

// register schemas
restle.register('user', userSchema);
restle.register('article', articleSchema);
restle.register('company', companySchema);

// check out some events
restle.on('ready', () => {
  console.log('Database has connected!');
});

// verify the user with a JSON Web Token
// all events except ready have express `req`, `res`, and `next` arguments
import jwt from 'jsonwebtoken';

restle.on('before', (req, res, next) => {
  console.log('Intercept all requests to your API.');
  const token = req.get('authorization');
  const secret = new Buffer(process.env.SECRET_KEY, 'base64');

  jwt.verify(token, secret, (err, decoded) => {
    // life ain't so good
    if (err) {
      return res.status(403).json({
        isVerified: false,
        error: err
      });
    }

    // life is good
    next();
  });
});

// add a company to a user if there isn't one
restle.on('user.create', (req, res, next) => {
  console.log('Fires before creating a user.');

  // Mongoose object
  const company = restle.model('company');

  if (!req.body.data.relationships.company) {
    company.find({}, (err, companies) => {
      if (err) {
        return res.sendStatus(500);
      }

      req.body.data.relationships.company = {
        type: 'company',
        id: companies[0]._id;
      };

      next();
    });  
  }
});

// request
GET /users HTTP/1.1
Accept: application/vnd.api+json

// response
HTTP/1.1 200 OK
Content-Type: application/vnd.api+json

{
  "data": [{
    "type": "user",
    "id": "1",
    "attributes": {
      "name": "Bob"
    },
    "links": {
      "self": "http://localhost:1337/api/users/1"
    },
    "relationships": {
      "company": {
        "links": {
          "self": "http://localhost:1337/api/articles/1/relationships/company",
          "related": "http://localhost:1337/api/articles/1/company"
        },
        "data": { "type": "company", "id": "9" }
      },
      "articles": {
        "links": {
          "self": "http://localhost:1337/api/users/1/relationships/articles",
          "related": "http://localhost:1337/api/users/1/articles"
        },
        "data": [
          { "type": "article", "id": "5" },
          { "type": "article", "id": "12" }
        ]
      }
    }
  }],
  "included": [{
    "type": "company",
    "id": "9",
    "attributes": {
      "name:" "Apple"
    },
    "links": {
      "self": "http://localhost:1337/api/companies/9"
    }
  }, {
    "type": "article",
    "id": "5",
    "attributes": {
      "title": "Awesome title",
      "body": "Awesome text"
    },
    "links": {
      "self": "http://localhost:1337/api/articles/5"
    }
  }, {
    "type": "article",
    "id": "12",
    "attributes": {
      "title": "Another title",
      "body": "Another text"
    },
    "links": {
      "self": "http://localhost:1337/api/articles/12"
    }
  }]
}