const admin = require('firebase-admin');

module.exports = async (req, res) => {
  console.info(`[START]\tWEBHOOKS/Conference End\nID:${req.body.conference.confId}\nParty:${req.body.conference.confAlias}`);
  if (req.body.eventType === 'Conference.Ended') {
    if (req.body.participants.length > 0) {
      if (req.body.confAlias.startsWith('AUTODELETE_')) {
        const partyName = req.body.confAlias.replace(/AUTODELETE_/, "");
        admin.firestore()
        .collection('rooms')
        .doc(partyName)
        .update({ conference: admin.firestore.FieldValue.delete() })
        .then(() => {
          console.info(`[DONE]\tWEBHOOKS/Conference End\nID:${req.body.conference.confId}\nParty:${req.body.conference.confAlias}`);
          return;
        })
        .catch(err => {
          console.error(`[ERROR]\tWEBHOOKS/Conference End/Firebase Error\nID:${req.body.conference.confId}\nParty:${req.body.conference.confAlias}\nError:${JSON.stringify(err)}`)
        });
        res.status(200).send({ message: 'Processed conference end'});
      }
    } else {
      console.info(`[DONE]\tWEBHOOKS/Conference End/End Of Duplicate Conference\nID:${req.body.conference.confId}\nParty:${req.body.conference.confAlias}`);
    }
  } else {
    console.error(`[ERROR]\tWEBHOOKS/Conference End/Wrong Event Type\nID:${req.body.conference.confId}\nParty:${req.body.conference.confAlias}`)
    res.status(400).send({ message: 'Wrong event type' });
  }
  return;
};