import { useState, useEffect } from 'react';
import { db, Teacher } from '../utils/db';
import { v4 as uuid } from 'uuid';

export function useTeachers() {
  const [teachers, setTeachers] = useState<Teacher[]>([]);

  useEffect(() => {
    db.teachers.toArray().then(setTeachers);
  }, []);

  const addTeacher = (name: string) => {
    const t: Teacher = { id: uuid(), name };
    db.teachers.add(t).then(() => setTeachers(prev => [...prev, t]));
  };

  return { teachers, addTeacher };
}