import sqlite from 'better-sqlite3'

import { sunriseDB } from '../helpers/database.helpers.js'
import type { ContractTypeField } from '../types/record.types.js'

import { updateRecordOrderNumber } from './updateRecordOrderNumber.js'

export default function getContractTypeFields(
  contractTypeId?: number,
  connectedDatabase?: sqlite.Database
): ContractTypeField[] {
  const database = connectedDatabase ?? sqlite(sunriseDB)

  const updateOrderNumbers = !database.readonly && contractTypeId !== undefined

  const sqlParameters: unknown[] = []

  if ((contractTypeId ?? -1) !== -1) {
    sqlParameters.push(contractTypeId)
  }

  const contractTypeFields = database
    .prepare(
      `select contractTypeFieldId, contractTypeField, fieldType,
        fieldValues, isRequired, pattern, minLength, maxLength, orderNumber
        from ContractTypeFields
        where recordDelete_timeMillis is null
        ${
          (contractTypeId ?? -1) === -1
            ? ' and contractTypeId is null'
            : ' and contractTypeId = ?'
        }
        order by orderNumber, contractTypeField`
    )
    .all(sqlParameters) as ContractTypeField[]

  if (updateOrderNumbers) {
    let expectedOrderNumber = 0

    for (const contractTypeField of contractTypeFields) {
      if (contractTypeField.orderNumber !== expectedOrderNumber) {
        updateRecordOrderNumber(
          'ContractTypeFields',
          contractTypeField.contractTypeFieldId,
          expectedOrderNumber,
          database
        )

        contractTypeField.orderNumber = expectedOrderNumber
      }

      expectedOrderNumber += 1
    }
  }

  if (connectedDatabase === undefined) {
    database.close()
  }

  return contractTypeFields
}