"use client";

import { useState, useEffect } from "react";
import { ref, onValue, off, update, push, remove } from "firebase/database";
import { db } from "@/lib/firebase";
import { useAuth } from "@/hooks/useAuth";
import { Staff } from "@/types/staff";

export function useStaff() {
  const { user } = useAuth();
  const [staff, setStaff] = useState<Staff[]>([]);
  const [loading, setLoading] = useState(true);

  useEffect(() => {
    if (!user?.email) return;

    const staffRef = ref(db, "Staff");
    
    const unsubscribe = onValue(staffRef, (snapshot) => {
      const data = snapshot.val();
      const list: Staff[] = [];
      
      if (data) {
        Object.keys(data).forEach((key) => {
          const item = data[key];
          if (item.restauranteEmail === user.email) {
            list.push({
              id: key,
              ...item
            });
          }
        });
      }
      
      setStaff(list);
      setLoading(false);
    });

    return () => off(staffRef, "value", unsubscribe);
  }, [user?.email]);

  const addStaff = async (member: Omit<Staff, "id" | "restauranteEmail">) => {
    if (!user?.email) return { success: false, error: "Utilizador não autenticado" };
    
    try {
      const newStaffRef = push(ref(db, "Staff"));
      const staffData: Staff = {
        id: newStaffRef.key as string,
        ...member,
        restauranteEmail: user.email
      };
      await update(newStaffRef, staffData);
      return { success: true };
    } catch (error) {
      console.error("Erro ao adicionar funcionário:", error);
      return { success: false, error };
    }
  };

  const deleteStaff = async (staffId: string) => {
    try {
      await remove(ref(db, `Staff/${staffId}`));
      return { success: true };
    } catch (error) {
      console.error("Erro ao remover funcionário:", error);
      return { success: false, error };
    }
  };

  return {
    staff,
    loading,
    addStaff,
    deleteStaff
  };
}