jellyBean API

const express = require('express');
const app = express();

const PORT = process.env.PORT || 4001;

app.use(express.static('public'));

const jellybeanBag = {
  mystery: {
    number: 4
  },
  lemon: {
    number: 5
  },
  rootBeer: {
    number: 25
  },
  cherry: {
    number: 3
  },
  licorice: {
    number: 1
  }
};

// Add your logging function here:
const logRequest = (verb) => {
  console.log(`${verb} Request Received`);
}


app.get('/beans/', (req, res, next) => {
  logRequest('GET');
  res.send(jellybeanBag);
  console.log('Response Sent');
});

app.post('/beans/', (req, res, next) => {
  logRequest('POST');
  let queryData = '';
  req.on('data', (data) => {
    queryData += data;
  });

  req.on('end', () => {
    const body = JSON.parse(queryData);
    const beanName = body.name;
    if (jellybeanBag[beanName] || jellybeanBag[beanName] === 0) {
      return res.status(400).send('Bag with that name already exists!');
    }
    const numberOfBeans = Number(body.number) || 0;
    jellybeanBag[beanName] = {
      number: numberOfBeans
    };
    res.send(jellybeanBag[beanName]);
    console.log('Response Sent');
  });
});

app.get('/beans/:beanName', (req, res, next) => {
  logRequest('GET');
  const beanName = req.params.beanName;
  if (!jellybeanBag[beanName]) {
    console.log('Response Sent');
    return res.status(404).send('Bean with that name does not exist');
  }
  res.send(jellybeanBag[beanName]);
  console.log('Response Sent');
});


app.post('/beans/:beanName/add', (req, res, next) => {
  logRequest('POST');
  const beanName = req.params.beanName;
  if (!jellybeanBag[beanName]) {
    return res.status(404).send('Bean with that name does not exist');
  }
  let queryData = '';
  req.on('data', (data) => {
    queryData += data;
  });

  req.on('end', () => {
    const numberOfBeans = Number(JSON.parse(queryData).number) || 0;
    jellybeanBag[beanName].number += numberOfBeans;
    res.send(jellybeanBag[beanName]);
    console.log('Response Sent');
  });
});

app.post('/beans/:beanName/remove', (req, res, next) => {
  logRequest('POST');
  const beanName = req.params.beanName;
  if (!jellybeanBag[beanName]) {
    return res.status(404).send('Bean with that name does not exist');
  }
  let queryData = '';
  req.on('data', (data) => {
    queryData += data;
  });

  req.on('end', () => {
    const numberOfBeans = Number(JSON.parse(queryData).number) || 0;
    if (jellybeanBag[beanName].number < numberOfBeans) {
      return res.status(400).send('Not enough beans in the jar to remove!');
    }
    jellybeanBag[beanName].number -= numberOfBeans;
    res.send(jellybeanBag[beanName]);
    console.log('Response Sent');
  });
});

app.delete('/beans/:beanName', (req, res, next) => {
  logRequest('DELETE');
  const beanName = req.params.beanName;
  if (!jellybeanBag[beanName]) {
    return res.status(404).send('Bean with that name does not exist');
  }
  jellybeanBag[beanName] = null;
  res.status(204).send();
  console.log('Response Sent');
});

app.put('/beans/:beanName/name', (req, res, next) => {
  logRequest('PUT');
  const beanName = req.params.beanName;
  if (!jellybeanBag[beanName]) {
    return res.status(404).send('Bean with that name does not exist');
  }
  let queryData = '';
  req.on('data', (data) => {
    queryData += data;
  });

  req.on('end', () => {
    const newName = JSON.parse(queryData).name;
    jellybeanBag[newName] = jellybeanBag[beanName];
    jellybeanBag[beanName] = null;
    res.send(jellybeanBag[newName]);
    console.log('Response Sent');
  });
});

app.listen(PORT, () => {
  console.log(`Server is listening on port ${PORT}`);
});