import { useMemo } from 'react'
import { unitMatchService } from '../services/unitMatchService'
import type { Property, PropertyUnit } from '../domain/property'

/**
 * Synchronous wrappers — unitMatchService methods are pure synchronous computations.
 * useMemo ensures we don't recompute on every render unnecessarily.
 */

export function useUnitMatchesMap(freeUnits: PropertyUnit[], property: Property) {
  return useMemo(
    () =>
      Object.fromEntries(
        freeUnits.map(u => [u.id, unitMatchService.getMatchesForUnit(u, property)]),
      ),
    [freeUnits, property],
  )
}

export function useUnitBundle(selectedUnits: PropertyUnit[]) {
  return useMemo(
    () => (selectedUnits.length >= 2 ? unitMatchService.buildBundle(selectedUnits) : null),
    [selectedUnits],
  )
}

export function useBundleMatches(selectedUnits: PropertyUnit[], property: Property) {
  return useMemo(
    () =>
      selectedUnits.length >= 2
        ? unitMatchService.getMatchesForBundle(selectedUnits, property)
        : [],
    [selectedUnits, property],
  )
}