<?php

require_once __DIR__ . '/auth_check.php';

mnt_require_permission('maintenance.manage');

try {
    $pdo = mnt_pdo();

    $id = (int)($_POST['id'] ?? 0);

    if ($id <= 0) {
        mnt_json_fail('ID non valido.');
    }

    $stmt = $pdo->prepare("SELECT * FROM maint_interventions WHERE id = ?");
    $stmt->execute([$id]);
    $intervention = $stmt->fetch(PDO::FETCH_ASSOC);

    if (!$intervention) {
        mnt_json_fail('Intervento non trovato.');
    }

    $stmt = $pdo->prepare("SELECT stored_name FROM maint_intervention_files WHERE intervention_id = ?");
    $stmt->execute([$id]);
    $storedNames = $stmt->fetchAll(PDO::FETCH_COLUMN);

    if (!empty($intervention['signature_path'])) {
        $storedNames[] = $intervention['signature_path'];
    }

    $pdo->prepare("DELETE FROM maint_interventions WHERE id = ?")->execute([$id]);

    foreach (array_filter($storedNames) as $storedName) {
        mnt_delete_stored_file($storedName);
    }

    // Removing the last completed intervention must roll the due date back
    mnt_recalc_maintenance($pdo, (int)$intervention['maintenance_id']);

    mnt_log(
        $pdo,
        'intervention_deleted',
        (int)$intervention['equipment_id'],
        (int)$intervention['maintenance_id'],
        null,
        $currentUserId,
        null,
        'Intervento del ' . $intervention['performed_at']
    );

    mnt_json_ok();
} catch (Throwable $e) {
    mnt_json_fail('Errore: ' . $e->getMessage());
}