<?php
ob_start();
ini_set('display_errors', 1);
error_reporting(E_ALL);

require_once(__DIR__ . '/../../../extra/auth.php');
require_once(__DIR__ . '/../class/db-functions.php');

while (ob_get_level()) {
    ob_end_clean();
}

header('Content-Type: application/json; charset=utf-8');

if (!class_exists('Auth')) {
    echo json_encode([
        'success' => false,
        'message' => 'Classe Auth non disponibile'
    ]);
    exit;
}

if (!Auth::check()) {
    echo json_encode([
        'success' => false,
        'message' => 'Sessione non valida o utente non autenticato'
    ]);
    exit;
}

$db = DBHandlerSelect::getInstance();
$pdo = $db->getConnection();
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

function formatDateIT($d)
{
    if (!$d || $d === '0000-00-00') return '';
    return date("d/m/Y", strtotime($d));
}

function formatDateTimeIT($d)
{
    if (!$d || $d === '0000-00-00 00:00:00') return '';
    return date("d/m/Y H:i", strtotime($d));
}

function worksheetNumberLabel($n)
{
    $n = (int)$n;
    return $n > 0 ? 'FL' . $n : '—';
}

function revisionLabel($rev)
{
    $rev = trim((string)$rev);
    return $rev !== '' ? $rev : '0';
}


$action = $_POST['action'] ?? '';

try {
    if ($action === 'get_matrice_worksheets') {
        $idmatrice = isset($_POST['idmatrice']) ? (int)$_POST['idmatrice'] : 0;
        if ($idmatrice <= 0) {
            echo json_encode([
                'success' => false,
                'message' => 'ID matrice non valido'
            ]);
            exit;
        }

        $stmt = $pdo->prepare("
            SELECT
                ws.id,
                ws.idmatrice,
                ws.worksheet_number,
                ws.revision_code,
                ws.worksheet_status,
                ws.worksheet_date,
                ws.customer_name,
                ws.profile_type_code,
                ws.marking,
                ws.approved_by,
                ws.created_at,
                ws.updated_at,
                (
                    SELECT COUNT(*)
                    FROM work_sheet_mescole wsm
                    WHERE wsm.worksheet_id = ws.id
                ) AS mix_count
            FROM work_sheets ws
            WHERE ws.idmatrice = ?
            ORDER BY
                ws.worksheet_number DESC,
                CASE
                    WHEN ws.revision_code IS NULL OR ws.revision_code = '' THEN 0
                    WHEN ws.revision_code REGEXP '^R[0-9]+$' THEN CAST(SUBSTRING(ws.revision_code, 2) AS UNSIGNED)
                    ELSE 0
                END DESC,
                ws.id DESC
        ");
        $stmt->execute([$idmatrice]);
        $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);

        $data = [];
        foreach ($rows as $r) {
            $data[] = [
                'id' => (int)$r['id'],
                'idmatrice' => (int)$r['idmatrice'],
                'worksheet_number' => (int)($r['worksheet_number'] ?? 0),
                'worksheet_number_label' => worksheetNumberLabel($r['worksheet_number'] ?? 0),
                'revision_code' => $r['revision_code'] ?? '',
                'revision_label' => revisionLabel($r['revision_code'] ?? ''),
                'worksheet_status' => $r['worksheet_status'] ?? 'active',
                'worksheet_status_label' => (($r['worksheet_status'] ?? 'active') === 'inactive') ? 'Inattivo' : 'Attivo',
                'worksheet_date' => $r['worksheet_date'],
                'worksheet_date_it' => formatDateIT($r['worksheet_date']),
                'customer_name' => $r['customer_name'] ?? '',
                'profile_type_code' => $r['profile_type_code'] ?? '',
                'marking' => $r['marking'] ?? '',
                'approved_by' => $r['approved_by'] ?? '',
                'created_at' => $r['created_at'] ?? '',
                'created_at_it' => formatDateTimeIT($r['created_at'] ?? ''),
                'updated_at' => $r['updated_at'] ?? '',
                'updated_at_it' => formatDateTimeIT($r['updated_at'] ?? ''),
                'mix_count' => (int)($r['mix_count'] ?? 0)
            ];
        }

        echo json_encode([
            'success' => true,
            'worksheets' => $data
        ]);
        exit;
    }

    if ($action === 'get_worksheet_detail') {
        $worksheetId = isset($_POST['worksheet_id']) ? (int)$_POST['worksheet_id'] : 0;
        if ($worksheetId <= 0) {
            echo json_encode([
                'success' => false,
                'message' => 'ID foglio non valido'
            ]);
            exit;
        }

        $stmt = $pdo->prepare("
            SELECT
                ws.*,
                m.nome AS matrice_nome,
                m.cliente AS matrice_cliente
            FROM work_sheets ws
            LEFT JOIN matrice m ON m.id = ws.idmatrice
            WHERE ws.id = ?
            LIMIT 1
        ");
        $stmt->execute([$worksheetId]);
        $ws = $stmt->fetch(PDO::FETCH_ASSOC);

        if (!$ws) {
            echo json_encode([
                'success' => false,
                'message' => 'Foglio di lavoro non trovato'
            ]);
            exit;
        }

        $stmtMix = $pdo->prepare("
            SELECT
                wsm.*,
                me.nome AS mescola_nome,
                me.nomeuscita AS mescola_uscita
            FROM work_sheet_mescole wsm
            LEFT JOIN mescole me ON me.id = wsm.idmescola
            WHERE wsm.worksheet_id = ?
            ORDER BY wsm.mix_position ASC, wsm.id ASC
        ");
        $stmtMix->execute([$worksheetId]);
        $mixRows = $stmtMix->fetchAll(PDO::FETCH_ASSOC);

        echo json_encode([
            'success' => true,
            'worksheet' => [
                'id' => (int)$ws['id'],
                'worksheet_number' => (int)($ws['worksheet_number'] ?? 0),
                'worksheet_number_label' => worksheetNumberLabel($ws['worksheet_number'] ?? 0),
                'revision_code' => $ws['revision_code'] ?? '',
                'revision_label' => revisionLabel($ws['revision_code'] ?? ''),
                'worksheet_status' => $ws['worksheet_status'] ?? 'active',
                'worksheet_status_label' => (($ws['worksheet_status'] ?? 'active') === 'inactive') ? 'Inattivo' : 'Attivo',
                'idmatrice' => (int)$ws['idmatrice'],
                'matrice_nome' => $ws['matrice_nome'] ?? '',
                'matrice_cliente' => $ws['matrice_cliente'] ?? '',
                'worksheet_date' => $ws['worksheet_date'] ?? '',
                'worksheet_date_it' => formatDateIT($ws['worksheet_date'] ?? ''),
                'customer_name' => $ws['customer_name'] ?? '',
                'profile_type_code' => $ws['profile_type_code'] ?? '',
                'marking' => $ws['marking'] ?? '',
                'prod_control_measure_settings' => $ws['prod_control_measure_settings'] ?? '',
                'control_frequency_cut' => $ws['control_frequency_cut'] ?? '',
                'control_frequency_drawing' => $ws['control_frequency_drawing'] ?? '',
                'control_frequency_jig' => $ws['control_frequency_jig'] ?? '',
                'control_mode_jig' => $ws['control_mode_jig'] ?? '',
                'requested_package_code' => $ws['requested_package_code'] ?? '',
                'meters_per_package' => $ws['meters_per_package'] ?? '',
                'meters_per_package_tolerance' => $ws['meters_per_package_tolerance'] ?? '',
                'meters_per_package_notes' => $ws['meters_per_package_notes'] ?? '',
                'box_type' => $ws['box_type'] ?? '',
                'packages_or_pieces_per_box' => $ws['packages_or_pieces_per_box'] ?? '',
                'meters_per_box' => $ws['meters_per_box'] ?? '',
                'pallet_type' => $ws['pallet_type'] ?? '',
                'boxes_or_packages_per_pallet' => $ws['boxes_or_packages_per_pallet'] ?? '',
                'speed_expected_kg_h' => $ws['speed_expected_kg_h'] ?? '',
                'speed_actual_kg_h' => $ws['speed_actual_kg_h'] ?? '',
                'speed_expected_m_h' => $ws['speed_expected_m_h'] ?? '',
                'speed_actual_m_h' => $ws['speed_actual_m_h'] ?? '',
                'approved_by' => $ws['approved_by'] ?? '',
                'notes' => $ws['notes'] ?? '',
                'created_at' => $ws['created_at'] ?? '',
                'created_at_it' => formatDateTimeIT($ws['created_at'] ?? ''),
                'updated_at' => $ws['updated_at'] ?? '',
                'updated_at_it' => formatDateTimeIT($ws['updated_at'] ?? '')
            ],
            'mix_rows' => array_map(function ($r) {
                return [
                    'id' => (int)$r['id'],
                    'mix_position' => (int)$r['mix_position'],
                    'mescola_nome' => $r['mescola_nome'] ?? '',
                    'mescola_uscita' => $r['mescola_uscita'] ?? '',
                    'mix_weight_g_m' => $r['mix_weight_g_m'] ?? '',
                    'required_density' => $r['required_density'] ?? '',
                    'required_hardness_shore_a' => $r['required_hardness_shore_a'] ?? '',
                    'lubrication_type' => $r['lubrication_type'] ?? '',
                    'lubrication_notes' => $r['lubrication_notes'] ?? ''
                ];
            }, $mixRows)
        ]);
        exit;
    }

    echo json_encode([
        'success' => false,
        'message' => 'Azione AJAX sconosciuta'
    ]);
    exit;
} catch (Exception $e) {
    echo json_encode([
        'success' => false,
        'message' => $e->getMessage()
    ]);
    exit;
}