import serialize from '../api/resolvers/serial.js'
import { getInvoice, getPayment, cancelHodlInvoice } from 'ln-service'
import { datePivot } from '../lib/time.js'
import { sendUserNotification } from '../api/webPush/index.js'
import { msatsToSats, numWithUnits } from '../lib/format'
import { INVOICE_RETENTION_DAYS } from '../lib/constants'

const walletOptions = { startAfter: 5, retryLimit: 21, retryBackoff: true }

// TODO this should all be done via websockets
export async function checkInvoice ({ data: { hash, isHeldSet }, boss, models, lnd }) {
  let inv
  try {
    inv = await getInvoice({ id: hash, lnd })
  } catch (err) {
    console.log(err, hash)
    // on lnd related errors, we manually retry so we don't exponentially backoff
    await boss.send('checkInvoice', { hash }, walletOptions)
    return
  }
  console.log(inv)

  // check if invoice still exists since HODL invoices get deleted after usage
  const dbInv = await models.invoice.findUnique({ where: { hash } })
  if (!dbInv) return

  const expired = new Date(inv.expires_at) <= new Date()

  if (inv.is_confirmed && !inv.is_held) {
    // never mark hodl invoices as confirmed here because
    // we manually confirm them when we settle them
    await serialize(models,
      models.$executeRaw`SELECT confirm_invoice(${inv.id}, ${Number(inv.received_mtokens)})`)
    sendUserNotification(dbInv.userId, {
      title: `${numWithUnits(msatsToSats(inv.received_mtokens), { abbreviate: false })} were deposited in your account`,
      body: dbInv.comment || undefined,
      tag: 'DEPOSIT',
      data: { sats: msatsToSats(inv.received_mtokens) }
    }).catch(console.error)
    return boss.send('nip57', { hash })
  }

  if (inv.is_canceled) {
    return serialize(models,
      models.invoice.update({
        where: {
          hash: inv.id
        },
        data: {
          cancelled: true
        }
      }))
  }

  if (inv.is_held && !isHeldSet) {
    // this is basically confirm_invoice without setting confirmed_at since it's not settled yet
    // and without setting the user balance since that's done inside the same tx as the HODL invoice action.
    await serialize(models,
      models.invoice.update({ where: { hash }, data: { msatsReceived: Number(inv.received_mtokens), isHeld: true } }))
    // remember that we already executed this if clause
    // (even though the query above is idempotent but imo, this makes the flow more clear)
    isHeldSet = true
  }

  if (!expired) {
    // recheck in 5 seconds if the invoice is younger than 5 minutes
    // otherwise recheck in 60 seconds
    const startAfter = new Date(inv.created_at) > datePivot(new Date(), { minutes: -5 }) ? 5 : 60
    await boss.send('checkInvoice', { hash, isHeldSet }, { ...walletOptions, startAfter })
  }

  if (expired && inv.is_held) {
    await cancelHodlInvoice({ id: hash, lnd })
  }
}

export async function checkWithdrawal ({ data: { id, hash }, boss, models, lnd }) {
  let wdrwl
  let notFound = false
  try {
    wdrwl = await getPayment({ id: hash, lnd })
  } catch (err) {
    console.log(err)
    if (err[1] === 'SentPaymentNotFound') {
      notFound = true
    } else {
      // on lnd related errors, we manually retry so we don't exponentially backoff
      await boss.send('checkWithdrawal', { id, hash }, walletOptions)
      return
    }
  }

  if (wdrwl?.is_confirmed) {
    const fee = Number(wdrwl.payment.fee_mtokens)
    const paid = Number(wdrwl.payment.mtokens) - fee
    await serialize(models, models.$executeRaw`
      SELECT confirm_withdrawl(${id}::INTEGER, ${paid}, ${fee})`)
  } else if (wdrwl?.is_failed || notFound) {
    let status = 'UNKNOWN_FAILURE'
    if (wdrwl?.failed.is_insufficient_balance) {
      status = 'INSUFFICIENT_BALANCE'
    } else if (wdrwl?.failed.is_invalid_payment) {
      status = 'INVALID_PAYMENT'
    } else if (wdrwl?.failed.is_pathfinding_timeout) {
      status = 'PATHFINDING_TIMEOUT'
    } else if (wdrwl?.failed.is_route_not_found) {
      status = 'ROUTE_NOT_FOUND'
    }
    await serialize(models, models.$executeRaw`
      SELECT reverse_withdrawl(${id}::INTEGER, ${status}::"WithdrawlStatus")`)
  } else {
    // we need to requeue to check again in 5 seconds
    const startAfter = new Date(wdrwl.created_at) > datePivot(new Date(), { minutes: -5 }) ? 5 : 60
    await boss.send('checkWithdrawal', { id, hash }, { ...walletOptions, startAfter })
  }
}

export async function autoDropBolt11s ({ models }) {
  await serialize(models, models.$executeRaw`
    UPDATE "Withdrawl"
    SET hash = NULL, bolt11 = NULL
    WHERE "userId" IN (SELECT id FROM users WHERE "autoDropBolt11s")
    AND now() > created_at + interval '${INVOICE_RETENTION_DAYS} days'
    AND hash IS NOT NULL;`
  )
}