/*
 * server component for the TimeLimit App
 * Copyright (C) 2019 - 2022 Jonas Lochmann
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

import * as Sequelize from 'sequelize'
import { Database } from '../database'
import { notifyClientsAboutChangesDelayed } from '../function/websocket'
import { WebsocketApi } from '../websocket'

export function initDeleteDeprecatedPurchasesWorker ({ database, websocket }: {
  database: Database
  websocket: WebsocketApi
}) {
  function doWorkSafe () {
    console.log('deleting deprecated purchases now')

    deleteDeprecatedPurchases({ database, websocket }).then(() => {
      console.log('finished deleting deprecated purchases')
    }).catch((ex) => {
      console.warn('error deleting deprecated purchases', ex)
    })
  }

  setTimeout(() => {
    doWorkSafe()

    setInterval(() => {
      doWorkSafe()
    }, 1000 * 60 * 60 /* every hour */)
  }, 1000 * 60 * 5 /* after 5 minutes */)
}

async function deleteDeprecatedPurchases ({ database, websocket }: {
  database: Database
  websocket: WebsocketApi
}) {
  await database.transaction(async (transaction) => {
    const affectedFamilyIds = (await database.family.findAll({
      where: {
        hasFullVersion: true,
        fullVersionUntil: {
          [Sequelize.Op.lt]: Date.now().toString(10)
        }
      },
      attributes: ['familyId'],
      transaction,
      limit: 100
    })).map((item) => item.familyId)

    await database.family.update({
      hasFullVersion: false
    }, {
      where: {
        familyId: {
          [Sequelize.Op.in]: affectedFamilyIds
        }
      },
      transaction
    })

    for (const familyId of affectedFamilyIds) {
      await notifyClientsAboutChangesDelayed({
        familyId,
        sourceDeviceId: null,
        database,
        websocket,
        generalLevel: 2,
        targetedLevels: new Map(),
        transaction
      })
    }

    return { affectedFamilyIds }
  })
}
