import express from 'express';
import pool from '../database.js';

const router = express.Router();

// GET all students
router.get('/', async (req, res) => {
    try {
        const [rows] = await pool.execute(`
      SELECT id, name, class, parent_name as parentName, parent_phone as parentPhone 
      FROM students 
      ORDER BY class, name
    `);
        res.json(rows);
    } catch (error) {
        console.error('Error fetching students:', error);
        res.status(500).json({ error: 'Failed to fetch students' });
    }
});

// GET single student
router.get('/:id', async (req, res) => {
    try {
        const [rows] = await pool.execute(`
      SELECT id, name, class, parent_name as parentName, parent_phone as parentPhone 
      FROM students 
      WHERE id = ?
    `, [req.params.id]);

        if (rows.length === 0) {
            return res.status(404).json({ error: 'Student not found' });
        }
        res.json(rows[0]);
    } catch (error) {
        console.error('Error fetching student:', error);
        res.status(500).json({ error: 'Failed to fetch student' });
    }
});

// POST create student
router.post('/', async (req, res) => {
    try {
        const { id, name, class: studentClass, parentName, parentPhone } = req.body;

        await pool.execute(`
      INSERT INTO students (id, name, class, parent_name, parent_phone)
      VALUES (?, ?, ?, ?, ?)
    `, [id, name, studentClass, parentName, parentPhone]);

        res.status(201).json({ status: 'success', message: 'Student created' });
    } catch (error) {
        console.error('Error creating student:', error);
        res.status(500).json({ error: 'Failed to create student' });
    }
});

// PUT update student
router.put('/:id', async (req, res) => {
    try {
        const { name, class: studentClass, parentName, parentPhone } = req.body;

        await pool.execute(`
      UPDATE students 
      SET name = ?, class = ?, parent_name = ?, parent_phone = ?
      WHERE id = ?
    `, [name, studentClass, parentName, parentPhone, req.params.id]);

        res.json({ status: 'success', message: 'Student updated' });
    } catch (error) {
        console.error('Error updating student:', error);
        res.status(500).json({ error: 'Failed to update student' });
    }
});

// DELETE student
router.delete('/:id', async (req, res) => {
    try {
        await pool.execute('DELETE FROM students WHERE id = ?', [req.params.id]);
        res.json({ status: 'success', message: 'Student deleted' });
    } catch (error) {
        console.error('Error deleting student:', error);
        res.status(500).json({ error: 'Failed to delete student' });
    }
});

export default router;