import sqlite from 'better-sqlite3'

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

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

import type * as recordTypes from '../../types/recordTypes'

interface GetFeeCategoriesFilters {
  occupancyTypeId?: number | string
  lotTypeId?: number | string
}

interface GetFeeCategoriesOptions {
  includeFees?: boolean
}

export function getFeeCategories(
  filters: GetFeeCategoriesFilters,
  options: GetFeeCategoriesOptions
): recordTypes.FeeCategory[] {
  const updateOrderNumbers =
    !(filters.lotTypeId || filters.occupancyTypeId) && options.includeFees

  const database = sqlite(databasePath, {
    readonly: !updateOrderNumbers
  })

  let sqlWhereClause = ' where recordDelete_timeMillis is null'

  const sqlParameters: unknown[] = []

  if (filters.occupancyTypeId) {
    sqlWhereClause +=
      ' and feeCategoryId in (' +
      'select feeCategoryId from Fees' +
      ' where recordDelete_timeMillis is null' +
      ' and (occupancyTypeId is null or occupancyTypeId = ?))'

    sqlParameters.push(filters.occupancyTypeId)
  }

  if (filters.lotTypeId) {
    sqlWhereClause +=
      ' and feeCategoryId in (' +
      'select feeCategoryId from Fees' +
      ' where recordDelete_timeMillis is null' +
      ' and (lotTypeId is null or lotTypeId = ?))'

    sqlParameters.push(filters.lotTypeId)
  }

  const feeCategories: recordTypes.FeeCategory[] = database
    .prepare(
      'select feeCategoryId, feeCategory, orderNumber' +
        ' from FeeCategories' +
        sqlWhereClause +
        ' order by orderNumber, feeCategory'
    )
    .all(sqlParameters)

  if (options.includeFees) {
    let expectedOrderNumber = 0

    for (const feeCategory of feeCategories) {
      if (
        updateOrderNumbers &&
        feeCategory.orderNumber !== expectedOrderNumber
      ) {
        updateRecordOrderNumber(
          'FeeCategories',
          feeCategory.feeCategoryId,
          expectedOrderNumber,
          database
        )

        feeCategory.orderNumber = expectedOrderNumber
      }

      expectedOrderNumber += 1

      feeCategory.fees = getFees(feeCategory.feeCategoryId, filters, database)
    }
  }

  database.close()

  return feeCategories
}

export default getFeeCategories