import { useApplicationManager } from './useApplicationManager'
import { computed } from '@vue/reactivity'

type SortBy =
  | 'title'
  | 'category'
  | ((
      a: ApplicationEntryWithInherited,
      b: ApplicationEntryWithInherited,
    ) => number)
type Visibility =
  | 'primary'
  | 'all'
  | ((entry: ApplicationEntryWithInherited) => boolean)

export function useApplicationEntries() {
  const applicationManager = useApplicationManager()

  const sortedAppEntries = function (
    sortBy: SortBy = 'title',
    visibility: Visibility = 'primary',
  ): Ref<ApplicationEntryWithInherited[]> {
    return computed(() => {
      const currentEntries = [...applicationManager.appsEntries.value]

      // filtering
      const filtered =
        typeof visibility === 'function'
          ? currentEntries.filter(visibility)
          : visibility === 'primary'
            ? currentEntries.filter((e) => e.visibility !== 'secondary')
            : currentEntries

      // sorting
      const sorted =
        typeof sortBy === 'function'
          ? filtered.sort(sortBy)
          : sortBy === 'title'
            ? filtered.sort((a, b) =>
                (a.title || '').localeCompare(b.title || ''),
              )
            : filtered.sort((a, b) =>
                (a.category || '').localeCompare(b.category || ''),
              )

      return sorted
    })
  }

  return { sortedAppEntries }
}