import { useMemo } from 'react'
import { useTeamAgents } from './useTeamAgents'
import { useAgentProtocol } from './useAgentProtocol'
import { useAgentWorkload } from './useAgentWorkload'
import { buildAgentPresence } from '../services/agentPresenceService'
import type { AgentPresence } from '../domain/agentPresence'

/**
 * Die Belegschaft, wie sie auf der Startseite auftritt (Runde 5).
 *
 * Der Hook sammelt Personalblätter, Protokoll und Auslastung ein; was daraus
 * wird, entscheidet `agentPresenceService` (CLAUDE.md §4.2).
 */
export function useAgentPresence(): { data: AgentPresence[]; isLoading: boolean } {
  const { data: agents = [], isLoading: agentsLoading } = useTeamAgents()
  const { data: protocol = [], isLoading: protocolLoading } = useAgentProtocol()
  const { data: workload, isLoading: workloadLoading } = useAgentWorkload()

  const data = useMemo(
    () => buildAgentPresence({ agents, protocol, workload }),
    [agents, protocol, workload],
  )

  return { data, isLoading: agentsLoading || protocolLoading || workloadLoading }
}