import type { ComputedRef } from 'vue'
import { computed } from 'vue'

import warning from '../../vc-util/warning'
import type { PresetDate } from '../interface'

export default function usePresets<T>(
  presets?: ComputedRef<PresetDate<T>[]>,
  legacyRanges?: ComputedRef<Record<string, T | (() => T)>>,
): ComputedRef<PresetDate<T>[]> {
  return computed(() => {
    if (presets?.value) {
      return presets.value
    }
    if (legacyRanges?.value) {
      warning(false, '`ranges` is deprecated. Please use `presets` instead.')

      const rangeLabels = Object.keys(legacyRanges.value)
      return rangeLabels.map((label) => {
        const range = legacyRanges.value[label]
        const newValues = typeof range === 'function' ? (range as any)() : range
        return {
          label,
          value: newValues,
        }
      })
    }
    return [] as unknown as PresetDate<T>[]
  })
}
