import sqlite from 'better-sqlite3'

import { lotOccupancyDB as databasePath } from '../../data/databasePaths.js'

import { clearCacheByTableName } from '../functions.cache.js'
import { updateRecordOrderNumber } from './updateRecordOrderNumber.js'

function getCurrentField(
  lotTypeFieldId: number | string,
  connectedDatabase: sqlite.Database
): { lotTypeId?: number; orderNumber: number } {
  const currentField: { lotTypeId?: number; orderNumber: number } =
    connectedDatabase
      .prepare(
        'select lotTypeId, orderNumber from LotTypeFields where lotTypeFieldId = ?'
      )
      .get(lotTypeFieldId)

  return currentField
}

export function moveLotTypeFieldDown(lotTypeFieldId: number | string): boolean {
  const database = sqlite(databasePath)

  const currentField = getCurrentField(lotTypeFieldId, database)

  database
    .prepare(
      `update LotTypeFields
        set orderNumber = orderNumber - 1
        where recordDelete_timeMillis is null
        and lotTypeId = ? and orderNumber = ? + 1`
    )
    .run(currentField.lotTypeId, currentField.orderNumber)

  const success = updateRecordOrderNumber(
    'LotTypeFields',
    lotTypeFieldId,
    currentField.orderNumber + 1,
    database
  )

  database.close()

  clearCacheByTableName('LotTypeFields')

  return success
}

export function moveLotTypeFieldDownToBottom(
  lotTypeFieldId: number | string
): boolean {
  const database = sqlite(databasePath)

  const currentField = getCurrentField(lotTypeFieldId, database)

  const maxOrderNumber: number = database
    .prepare(
      `select max(orderNumber) as maxOrderNumber
        from LotTypeFields
        where recordDelete_timeMillis is null
        and lotTypeId = ?`
    )
    .get(currentField.lotTypeId).maxOrderNumber

  if (currentField.orderNumber !== maxOrderNumber) {
    updateRecordOrderNumber(
      'LotTypeFields',
      lotTypeFieldId,
      maxOrderNumber + 1,
      database
    )

    database
      .prepare(
        `update LotTypeFields
            set orderNumber = orderNumber - 1
            where recordDelete_timeMillis is null
            and lotTypeId = ?
            and orderNumber > ?`
      )
      .run(currentField.lotTypeId, currentField.orderNumber)
  }

  database.close()

  clearCacheByTableName('LotTypeFields')

  return true
}

export function moveLotTypeFieldUp(lotTypeFieldId: number | string): boolean {
  const database = sqlite(databasePath)

  const currentField = getCurrentField(lotTypeFieldId, database)

  if (currentField.orderNumber <= 0) {
    database.close()
    return true
  }

  database
    .prepare(
      `update LotTypeFields
        set orderNumber = orderNumber + 1
        where recordDelete_timeMillis is null
        and lotTypeId = ?
        and orderNumber = ? - 1`
    )
    .run(currentField.lotTypeId, currentField.orderNumber)

  const success = updateRecordOrderNumber(
    'LotTypeFields',
    lotTypeFieldId,
    currentField.orderNumber - 1,
    database
  )

  database.close()

  clearCacheByTableName('LotTypeFields')

  return success
}

export function moveLotTypeFieldUpToTop(
  lotTypeFieldId: number | string
): boolean {
  const database = sqlite(databasePath)

  const currentField = getCurrentField(lotTypeFieldId, database)

  if (currentField.orderNumber > 0) {
    updateRecordOrderNumber('LotTypeFields', lotTypeFieldId, -1, database)

    database
      .prepare(
        `update LotTypeFields
            set orderNumber = orderNumber + 1
            where recordDelete_timeMillis is null
            and lotTypeId = ?
            and orderNumber < ?`
      )
      .run(currentField.lotTypeId, currentField.orderNumber)
  }

  database.close()

  clearCacheByTableName('LotTypeFields')

  return true
}