const { pool } = require('../database')

async function getAllConfigEcolage() {
  const sql = `
    SELECT c.*, m.nom AS mention_nom, m.uniter AS mention_uniter, n.nom AS niveau_nom
    FROM configecolage c
    LEFT JOIN mentions m ON c.mention_id = m.id
    LEFT JOIN niveaus n ON c.niveau_id = n.id
    ORDER BY n.nom, m.nom
  `
  try {
    const [rows] = await pool.query(sql)
    return rows
  } catch (error) {
    return []
  }
}

async function getConfigEcolageByMentionNiveau(mention_id, niveau_nom) {
  const sql = `
    SELECT c.montant_total
    FROM configecolage c
    LEFT JOIN niveaus n ON c.niveau_id = n.id
    WHERE c.mention_id = ? AND n.nom = ?
  `
  try {
    const [rows] = await pool.query(sql, [mention_id, niveau_nom])
    return rows.length > 0 ? rows[0] : null
  } catch (error) {
    return null
  }
}

async function upsertConfigEcolage(mention_id, niveau_id, montant_total) {
  const sql = `
    INSERT INTO configecolage (mention_id, niveau_id, montant_total)
    VALUES (?, ?, ?)
    ON DUPLICATE KEY UPDATE montant_total = ?
  `
  try {
    await pool.query(sql, [mention_id, niveau_id, montant_total, montant_total])
    return { success: true }
  } catch (error) {
    return { success: false, error: error.message }
  }
}

async function deleteConfigEcolage(id) {
  try {
    await pool.query('DELETE FROM configecolage WHERE id = ?', [id])
    return { success: true }
  } catch (error) {
    return { success: false, error: error.message }
  }
}

module.exports = {
  getAllConfigEcolage,
  getConfigEcolageByMentionNiveau,
  upsertConfigEcolage,
  deleteConfigEcolage
}