const _ = require('lodash/fp')
const { migrationSaveConfig, loadLatest } = require('../lib/new-settings-loader')
const CASSETTE_MAX_CAPACITY = 500

exports.up = function (next) {
  return loadLatest()
    .then(({ config }) => {
      const fiatBalance1 = config.notifications_fiatBalanceCassette1
      const fiatBalance2 = config.notifications_fiatBalanceCassette2
      const fiatBalance3 = config.notifications_fiatBalanceCassette3
      const fiatBalance4 = config.notifications_fiatBalanceCassette4
      const overrides = config.notifications_fiatBalanceOverrides
      const newConfig = {}
      if (fiatBalance1) {
        newConfig.notifications_fillingPercentageCassette1 = (100 * (fiatBalance1 / CASSETTE_MAX_CAPACITY)).toFixed(0)
        newConfig.notifications_fiatBalanceCassette1 = null
      }
      if (fiatBalance2) {
        newConfig.notifications_fillingPercentageCassette2 = (100 * (fiatBalance2 / CASSETTE_MAX_CAPACITY)).toFixed(0)
        newConfig.notifications_fiatBalanceCassette2 = null
      }
      if (fiatBalance3) {
        newConfig.notifications_fillingPercentageCassette3 = (100 * (fiatBalance3 / CASSETTE_MAX_CAPACITY)).toFixed(0)
        newConfig.notifications_fiatBalanceCassette3 = null
      }
      if (fiatBalance4) {
        newConfig.notifications_fillingPercentageCassette4 = (100 * (fiatBalance4 / CASSETTE_MAX_CAPACITY)).toFixed(0)
        newConfig.notifications_fiatBalanceCassette4 = null
      }

      if (overrides) {
        newConfig.notifications_fiatBalanceOverrides = _.map(override => {
          const newOverride = {}
          if (override.fiatBalanceCassette1) {
            newOverride.fillingPercentageCassette1 = (100 * (override.fiatBalanceCassette1 / CASSETTE_MAX_CAPACITY)).toFixed(0)
          }
          if (override.fiatBalanceCassette2) {
            newOverride.fillingPercentageCassette2 = (100 * (override.fiatBalanceCassette2 / CASSETTE_MAX_CAPACITY)).toFixed(0)
          }
          if (override.fiatBalanceCassette3) {
            newOverride.fillingPercentageCassette3 = (100 * (override.fiatBalanceCassette3 / CASSETTE_MAX_CAPACITY)).toFixed(0)
          }
          if (override.fiatBalanceCassette4) {
            newOverride.fillingPercentageCassette4 = (100 * (override.fiatBalanceCassette4 / CASSETTE_MAX_CAPACITY)).toFixed(0)
          }
          newOverride.machine = override.machine
          newOverride.id = override.id

          return newOverride
        }, config.notifications_fiatBalanceOverrides)
      }
      return migrationSaveConfig(newConfig)
        .then(() => next())
    })
    .catch(err => {
      console.log(err.message)
      return next(err)
    })
}

module.exports.down = function (next) {
  next()
}