To update the score, we will require the ID of the match to look up for an existing one. If a valid match is found, we will apply the updates. If no match is found, we have to respond with a 404 not found HTTP response. Otherwise, we respond with a Success 200 HTTP response.

Let's start by creating the updateScore function, as shown:

...
const Match = require('../models/match')

const updateScore = async (matchId, teamId) => {
  try {
    let match = await Match.findById(matchId)

    if (match == null) throw new Error("Match not found")

    if (teamId == 'team_1') {
      match.score.team_1++;
    } else {
      match.score.team_2++;
    }

    match = await match.save()
    return match

  } catch (err) {
    throw err
  }
}


api
  .route('/admin/match/:id?')
...

Now, let's call our function in the PUT HTTP verb, as illustrated:

...
api
  .route('/admin/match/:id?')
  .post((req, res, next) => {
     ...
  })
api
  .route('/admin/match/scores/:id')
   .post((req, res, next) => {

    const matchId = req.params.id
    const teamId = req.body.teamId

    updateScore(matchId, teamId)
      .then(match => res.json(match))
      .catch(err => next(err))
  })
...

Cool! Let's test things out. Execute the following curl command to update the match we created earlier:

$ curl -X POST -H "Content-type: application/json" -d '{"teamId": "team_1" }'  localhost:3000/admin/match/scores/5a94a2b8221bb505c92d801c

{"_id":"5a94a2b8221bb505c92d801c","team_1":"Peru","team_2":"Chile","__v":0,"score":{"team_1":21,"team_2":0}}

Note that the team_1 (Peru team) now has 21 goals in its score, and the Chile team has 0.

Awesome! Now we are able to create a new Match and update the scores. Let's use express-jwt and express-jwt-permissions to secure our APIs. Keep reading!