import { useMemo } from 'react'
import { useReminders } from './useReminders'
import { useVisitAssignments } from './useVisitAssignments'
import { useExposeLeads } from './useExposeLeads'
import { useUnifiedLeads } from './useUnifiedLeads'
import { useProperties } from './useProperties'
import { computeAgentWorkload } from '../services/agentWorkloadService'
import type { AgentWorkload } from '../domain/agentWorkload'

/**
 * Aktuelle Auslastung der fünf digitalen Mitarbeitenden (Runde 5).
 *
 * Der Hook sammelt nur die Bestände ein; was daraus wird, entscheidet
 * `agentWorkloadService` — Schwellen, Zeitfenster und Formulierungen sind
 * fachliche Festlegungen und gehören nicht in die Oberflächenschicht
 * (CLAUDE.md §4.2/§5.2).
 */
export function useAgentWorkload(): { data: Record<string, AgentWorkload>; isLoading: boolean } {
  const { data: reminders = [], isLoading: remindersLoading } = useReminders()
  const { data: visits = [], isLoading: visitsLoading } = useVisitAssignments()
  const { data: exposeLeads = [], isLoading: exposeLoading } = useExposeLeads()
  const { data: leads, isLoading: leadsLoading } = useUnifiedLeads()
  const { data: properties = [], isLoading: propertiesLoading } = useProperties()

  const data = useMemo(
    () => computeAgentWorkload({ reminders, visits, exposeLeads, leads, properties }),
    [reminders, visits, exposeLeads, leads, properties],
  )

  return {
    data,
    isLoading:
      remindersLoading || visitsLoading || exposeLoading ||
      leadsLoading || propertiesLoading,
  }
}