import Mailjet from 'node-mailjet'

const monitoringUrl = "https://monitoringapi.solaredge.com/site/2516130/overview?api_key=GVF1BZAAM74IRDZ2WRWT32A5V0CY9G4Z&format=json"

async function getData() {
  const response = await fetch(monitoringUrl); 

  return response.json();
}

async function getCurrentPower(data) {
  return data.overview.currentPower.power
}

async function getLastUpdateTime(data) {
  return data.overview.lastUpdateTime
}

async function sendAlert(msg) {
  console.log("sendAlert start")

  const mailjet = Mailjet.apiConnect(
    process.env.MJ_APIKEY_PUBLIC,
    process.env.MJ_APIKEY_PRIVATE,
  );

  const request = mailjet
        .post('send', { version: 'v3.1' })
        .request({
          Messages: [
            {
              From: {
                Email: "admin@lestoitsduval.fr",
                Name: "Les Toits du Val - Salle Greyzollon Duluth"
              },
              To: [
                {
                  Email: "alert@lestoitsduval.fr",
                  Name: "Équipe pour les alertes"
                }
              ],
              Subject: "😱 Alerte sur la production",
              TextPart: msg,
            }
          ]
        })

  request
    .then((result) => {
        console.log("result")
        console.log(result.body)
    })
    .catch((err) => {
      console.log("err")
      console.log(err)
    })
  console.log("sendAlert end")
  return
}

function formatTime(seconds) {
  if (seconds < 60) {
      return `${seconds} seconde${seconds > 1 ? 's' : ''}`;
  } else if (seconds < 3600) {
      const minutes = Math.floor(seconds / 60);
      const remainingSeconds = seconds % 60;
      return remainingSeconds === 0
          ? `environ ${minutes} minute${minutes > 1 ? 's' : ''}`
          : `${minutes} minute${minutes > 1 ? 's' : ''} et ${remainingSeconds} seconde${remainingSeconds > 1 ? 's' : ''}`;
  } else {
      const hours = Math.floor(seconds / 3600);
      const remainingMinutes = Math.floor((seconds % 3600) / 60);
      return remainingMinutes === 0
          ? `environ ${hours} heure${hours > 1 ? 's' : ''}`
          : `environ ${hours} heure${hours > 1 ? 's' : ''} et ${remainingMinutes} minute${remainingMinutes > 1 ? 's' : ''}`;
  }
}

const data = await getData();
const now = new Date();
const currentPower = await getCurrentPower(data);
const lastUpdateTime = await getLastUpdateTime(data);
console.log(`[${lastUpdateTime}] La salle Greyzollon Duluth produissait ${currentPower} watt${currentPower>0?'s':''} !`)
const secondDifference = Math.ceil(Math.abs(now.getTime() - new Date(lastUpdateTime).getTime()) / 1000);
const formatedDifference = formatTime(secondDifference)

if (secondDifference > (6 * 60)) {
  const msg = `❌ L'installation n'a pas répondu depuis '${lastUpdateTime}' ça fait ${formatedDifference} (${secondDifference}) !`
  console.log(msg);
  await sendAlert(msg);
} else {
  console.log(`✅ L'installation répond correctement dernière mise à jour il y a ${formatedDifference} (${secondDifference}).`);
}