// hooks/useHistoryFeed.ts
import { useMemo } from 'react'
import { mergeAndSort, filterByCategory, groupByDate } from '@/lib/utils/history'
import {
  mapMoodToHistoryCard,
  mapSleepToHistoryCard,
  mapTriggerToHistoryCard,
  mapInterventionToHistoryCard
} from '@/lib/history/mappers'
import type { HistoryCategory } from '@/lib/history/types'
import { useMoodEntries, useSleepRecords } from '@/hooks';

export function useHistoryFeed(activeFilter: HistoryCategory | 'all') {
  const { data: moodsPage }        = useMoodEntries({})
  const { data: sleepPage }        = useSleepRecords({})

  const moods        = moodsPage?.entries ?? []
  const sleepRecords = sleepPage?.entries ?? []

  const grouped = useMemo(() => {
    const merged = mergeAndSort([
      moods.map(mapMoodToHistoryCard),
      sleepRecords.map(mapSleepToHistoryCard),
    ])
    const filtered = filterByCategory(merged, activeFilter)
    return groupByDate(filtered)
  }, [moods, sleepRecords, activeFilter])

  // TODO: expose the isLoading here
  return grouped
}