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

include('include/headscript.php');
$db  = DBHandlerSelect::getInstance();
$pdo = $db->getConnection();

/* 2=produzione, 3=qualità(fine ok), 7=pausa, 8=problema. "Concluse"=3,8 */
$STATI_CONCLUSI = [3, 8];

$linee   = $pdo->query("SELECT id, name, color, max_hours_per_day FROM production_lines ORDER BY line_number")->fetchAll();
$matrici = $pdo->query("SELECT id, nome FROM matrice ORDER BY nome")->fetchAll();
$mescole = $pdo->query("SELECT id, nome FROM mescole ORDER BY nome")->fetchAll();

if (!empty($_GET['ajax'])) {
    header('Content-Type: application/json');

    $dateFrom = $_GET['date_from'] ?? '';
    $dateTo   = $_GET['date_to'] ?? '';
    $lineRaw  = $_GET['lines'] ?? '';
    $lineArr  = $lineRaw !== '' ? array_values(array_filter(array_map('intval', explode(',', $lineRaw)))) : [];
    $matId    = isset($_GET['matrice_id']) && $_GET['matrice_id'] !== '' ? (int)$_GET['matrice_id'] : null;
    $mescId   = isset($_GET['mescola_id']) && $_GET['mescola_id'] !== '' ? (int)$_GET['mescola_id'] : null;
    $granul   = ($_GET['granularity'] ?? 'day') === 'month' ? 'month' : 'day';

    $where  = ["p.id_status IN (" . implode(',', $STATI_CONCLUSI) . ")"];
    $params = [];
    if ($dateFrom !== '') {
        $where[] = "p.Data >= :date_from";
        $params['date_from'] = $dateFrom;
    }
    if ($dateTo   !== '') {
        $where[] = "p.Data <= :date_to";
        $params['date_to']   = $dateTo;
    }
    if (!empty($lineArr)) {
        $where[] = "p.id_linea IN (" . implode(',', $lineArr) . ")";
    }
    if ($matId  !== null) {
        $where[] = "p.idmatrice = :mat_id";
        $params['mat_id'] = $matId;
    }
    if ($mescId !== null) {
        $where[] = "EXISTS (SELECT 1 FROM productiondata_mescole pm
                            WHERE pm.id_productiondata = p.id AND pm.id_mescola = :mesc_id)";
        $params['mesc_id'] = $mescId;
    }
    $whereSql = implode(' AND ', $where);

    try {
        $sqlKpi = "SELECT
            COUNT(*) AS n_produzioni,
            COALESCE(SUM(p.tempo_totale_produzione),0) AS tot_occupato_s,
            COALESCE(SUM(p.seconds_pause),0)           AS tot_pause_s,
            COALESCE(SUM(p.seconds_produzione),0)      AS tot_netto_s,
            COALESCE(SUM(p.kgprod),0)  AS tot_kg,
            COALESCE(SUM(p.mtprod),0)  AS tot_mt,
            COALESCE(SUM(p.scarto),0)  AS tot_scarto
          FROM productiondata p WHERE $whereSql";
        $stmt = $pdo->prepare($sqlKpi);
        $stmt->execute($params);
        $kpi = $stmt->fetch(PDO::FETCH_ASSOC);

        $effTempo = ($kpi['tot_occupato_s'] > 0) ? round($kpi['tot_netto_s'] / $kpi['tot_occupato_s'] * 100, 1) : 0;
        $denomScarto = $kpi['tot_kg'] + $kpi['tot_scarto'];
        $scartoPercTot = ($denomScarto > 0) ? round($kpi['tot_scarto'] / $denomScarto * 100, 2) : 0;

        $giorniRange = 1;
        if ($dateFrom !== '' && $dateTo !== '') {
            $d1 = new DateTime($dateFrom);
            $d2 = new DateTime($dateTo);
            $giorniRange = max(1, $d1->diff($d2)->days + 1);
        }
        $capSql = "SELECT COALESCE(SUM(max_hours_per_day),0) AS somma_ore_giorno
                   FROM production_lines"
            . (!empty($lineArr) ? " WHERE id IN (" . implode(',', $lineArr) . ")" : "");
        $capOreGiorno = (float)$pdo->query($capSql)->fetchColumn();
        $capacitaTeoricaS = $capOreGiorno * 3600 * $giorniRange;
        $saturazione = ($capacitaTeoricaS > 0) ? round($kpi['tot_occupato_s'] / $capacitaTeoricaS * 100, 1) : 0;

        $sqlLinea = "SELECT l.id, l.name AS linea, l.color, l.max_hours_per_day, COUNT(*) AS n_prod,
            COALESCE(SUM(p.tempo_totale_produzione),0) AS occupato_s,
            COALESCE(SUM(p.seconds_pause),0) AS pause_s,
            COALESCE(SUM(p.seconds_produzione),0) AS netto_s,
            COALESCE(SUM(p.kgprod),0) AS kg, COALESCE(SUM(p.scarto),0) AS scarto
          FROM productiondata p JOIN production_lines l ON l.id = p.id_linea
          WHERE $whereSql GROUP BY l.id ORDER BY l.line_number";
        $stmt = $pdo->prepare($sqlLinea);
        $stmt->execute($params);
        $perLinea = $stmt->fetchAll(PDO::FETCH_ASSOC);
        foreach ($perLinea as &$row) {
            $row['eff_tempo'] = ($row['occupato_s'] > 0) ? round($row['netto_s'] / $row['occupato_s'] * 100, 1) : 0;
            $den = $row['kg'] + $row['scarto'];
            $row['scarto_perc'] = ($den > 0) ? round($row['scarto'] / $den * 100, 2) : 0;
            $capLineaS = (float)$row['max_hours_per_day'] * 3600 * $giorniRange;
            $row['saturazione'] = ($capLineaS > 0) ? round($row['occupato_s'] / $capLineaS * 100, 1) : 0;
        }
        unset($row);

        if ($granul === 'month') {
            $periodExpr = "DATE_FORMAT(p.Data, '%Y-%m')";
        } else {
            $periodExpr = "p.Data";
        }
        $sqlSerie = "SELECT $periodExpr AS periodo,
            COALESCE(SUM(p.tempo_totale_produzione),0) AS occupato_s,
            COALESCE(SUM(p.seconds_pause),0) AS pause_s,
            COALESCE(SUM(p.seconds_produzione),0) AS netto_s,
            COALESCE(SUM(p.kgprod),0) AS kg, COALESCE(SUM(p.scarto),0) AS scarto
          FROM productiondata p WHERE $whereSql GROUP BY periodo ORDER BY periodo";
        $stmt = $pdo->prepare($sqlSerie);
        $stmt->execute($params);
        $serie = $stmt->fetchAll(PDO::FETCH_ASSOC);
        foreach ($serie as &$s) {
            $s['eff_tempo'] = ($s['occupato_s'] > 0) ? round($s['netto_s'] / $s['occupato_s'] * 100, 1) : 0;
            $den = $s['kg'] + $s['scarto'];
            $s['scarto_perc'] = ($den > 0) ? round($s['scarto'] / $den * 100, 2) : 0;
        }
        unset($s);

        $sqlCat = "SELECT pr.category AS category,
            COALESCE(SUM(TIMESTAMPDIFF(SECOND, pp.start_pause, pp.end_pause)),0) AS durata_s
          FROM production_pauses pp
          JOIN productiondata p ON p.id = pp.id_production
          JOIN pause_reasons pr ON pr.id = pp.reason_id
          WHERE pp.end_pause IS NOT NULL AND $whereSql GROUP BY pr.category";
        $stmt = $pdo->prepare($sqlCat);
        $stmt->execute($params);
        $plannedS = 0;
        $unplannedS = 0;
        foreach ($stmt->fetchAll(PDO::FETCH_ASSOC) as $c) {
            if ($c['category'] === 'planned') $plannedS = (int)$c['durata_s'];
            else $unplannedS += (int)$c['durata_s'];
        }

        $sqlDett = "SELECT p.id, p.Data, p.conferma_ordine, p.note_extra,
            l.name AS linea, m.nome AS matrice, c.nome AS cliente,
            p.tempo_totale_produzione AS occupato_s, p.seconds_pause AS pause_s, p.seconds_produzione AS netto_s,
            p.kgprod, p.mtprod, p.scarto, p.scarto_perc, p.id_status,
            (SELECT GROUP_CONCAT(mes.nome ORDER BY mes.nome SEPARATOR ', ')
             FROM productiondata_mescole pm JOIN mescole mes ON mes.id = pm.id_mescola
             WHERE pm.id_productiondata = p.id) AS mescole
          FROM productiondata p
          LEFT JOIN production_lines l ON l.id = p.id_linea
          LEFT JOIN matrice m ON m.id = p.idmatrice
          LEFT JOIN clients c ON c.id = p.id_cliente
          WHERE $whereSql ORDER BY p.Data DESC, p.id DESC LIMIT 500";
        $stmt = $pdo->prepare($sqlDett);
        $stmt->execute($params);
        $dettaglio = $stmt->fetchAll(PDO::FETCH_ASSOC);

        echo json_encode([
            'success' => true,
            'granularity' => $granul,
            'kpi' => [
                'n_produzioni' => (int)$kpi['n_produzioni'],
                'tot_occupato_s' => (int)$kpi['tot_occupato_s'],
                'tot_pause_s' => (int)$kpi['tot_pause_s'],
                'tot_netto_s' => (int)$kpi['tot_netto_s'],
                'tot_kg' => (float)$kpi['tot_kg'],
                'tot_mt' => (float)$kpi['tot_mt'],
                'tot_scarto' => (float)$kpi['tot_scarto'],
                'eff_tempo' => $effTempo,
                'scarto_perc_tot' => $scartoPercTot,
                'planned_s' => $plannedS,
                'unplanned_s' => $unplannedS,
                'saturazione' => $saturazione,
                'giorni_range' => $giorniRange,
            ],
            'per_linea' => $perLinea,
            'serie' => $serie,
            'dettaglio' => $dettaglio,
        ]);
    } catch (Exception $e) {
        echo json_encode(['success' => false, 'msg' => $e->getMessage()]);
    }
    exit;
}
?>
<!doctype html>
<html lang="it">

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Statistiche Produzione</title>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <?php include('cssinclude.php'); ?>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
    <style>
        .stats-header {
            background: linear-gradient(135deg, #1d4ed8, #3b82f6);
            color: #fff;
            padding: 1.1rem 1.4rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-radius: 1rem;
            flex-wrap: wrap;
            gap: .8rem;
            margin-bottom: 1rem;
        }

        .stats-header h4 {
            margin: 0;
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            gap: .5rem;
            flex-wrap: wrap;
        }

        .hbtn {
            background: rgba(255, 255, 255, .22);
            border: 1px solid rgba(255, 255, 255, .4);
            color: #fff;
            padding: .5rem 1rem;
            border-radius: .7rem;
            text-decoration: none;
            font-weight: 600;
        }

        .hbtn:hover {
            background: rgba(255, 255, 255, .34);
            color: #fff;
        }

        .hbtn.active {
            background: #fff;
            color: #1d4ed8;
        }

        .filters-bar {
            background: #fff;
            padding: 1rem 1.2rem;
            border-radius: 1rem;
            box-shadow: 0 4px 15px rgba(0, 0, 0, .05);
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: .9rem;
            align-items: end;
            margin-bottom: 1rem;
        }

        .filters-bar label {
            display: block;
            font-weight: 600;
            color: #1e40af;
            font-size: .8rem;
            margin-bottom: .3rem;
        }

        .filters-bar input,
        .filters-bar select {
            width: 100%;
            padding: .55rem .7rem;
            border: 1px solid #cbd5e1;
            border-radius: .6rem;
            font-size: .95rem;
            background: #fff;
        }

        .line-buttons {
            display: flex;
            gap: .5rem;
            flex-wrap: wrap;
        }

        .line-btn2 {
            flex: 1;
            min-width: 70px;
            padding: .55rem .3rem;
            border: 2px solid transparent;
            border-radius: .6rem;
            color: #fff;
            font-weight: 700;
            cursor: pointer;
            font-size: .9rem;
            opacity: .35;
            transition: .15s;
        }

        .line-btn2.active {
            opacity: 1;
            box-shadow: 0 2px 8px rgba(0, 0, 0, .15);
        }

        .gran-toggle {
            display: flex;
            gap: .3rem;
        }

        .gran-btn {
            flex: 1;
            padding: .55rem .3rem;
            border: 1px solid #cbd5e1;
            background: #fff;
            border-radius: .6rem;
            cursor: pointer;
            font-weight: 600;
            font-size: .85rem;
            color: #475569;
        }

        .gran-btn.active {
            background: #2563eb;
            color: #fff;
            border-color: #2563eb;
        }

        .filters-actions {
            display: flex;
            gap: .5rem;
        }

        .btn-apply {
            background: #2563eb;
            color: #fff;
            border: none;
            padding: .6rem 1rem;
            border-radius: .6rem;
            font-weight: 600;
            cursor: pointer;
            flex: 1;
        }

        .btn-reset {
            background: #e2e8f0;
            color: #475569;
            border: none;
            padding: .6rem 1rem;
            border-radius: .6rem;
            font-weight: 600;
            cursor: pointer;
        }

        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 1rem;
            margin-bottom: 1rem;
        }

        .kpi-card {
            position: relative;
            background: #fff;
            border-radius: 1rem;
            padding: 1.1rem 1.2rem;
            box-shadow: 0 4px 15px rgba(0, 0, 0, .05);
            border-left: 5px solid #3b82f6;
        }

        .kpi-card .kpi-label {
            font-size: .72rem;
            text-transform: uppercase;
            letter-spacing: .5px;
            color: #64748b;
            font-weight: 700;
        }

        .kpi-card .kpi-value {
            font-size: 1.7rem;
            font-weight: 800;
            color: #0f172a;
            margin-top: .2rem;
            line-height: 1.1;
        }

        .kpi-card .kpi-sub {
            font-size: .8rem;
            color: #94a3b8;
            margin-top: .2rem;
        }

        .kpi-card.green {
            border-left-color: #10b981;
        }

        .kpi-card.amber {
            border-left-color: #f59e0b;
        }

        .kpi-card.red {
            border-left-color: #ef4444;
        }

        .kpi-card.violet {
            border-left-color: #8b5cf6;
        }

        .kpi-card.teal {
            border-left-color: #14b8a6;
        }

        .charts-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
            gap: 1rem;
            margin-bottom: 1rem;
        }

        .chart-card {
            position: relative;
            background: #fff;
            border-radius: 1rem;
            padding: 1.1rem 1.2rem;
            box-shadow: 0 4px 15px rgba(0, 0, 0, .05);
        }

        .chart-card.wide {
            grid-column: 1 / -1;
        }

        .chart-card h6 {
            font-weight: 700;
            color: #1e293b;
            margin: 0 0 .8rem;
            font-size: .95rem;
            padding-right: 1.8rem;
        }

        .chart-wrap {
            position: relative;
            height: 300px;
        }

        .table-card {
            position: relative;
            background: #fff;
            border-radius: 1rem;
            padding: 1.1rem 1.2rem;
            box-shadow: 0 4px 15px rgba(0, 0, 0, .05);
            overflow-x: auto;
            margin-bottom: 2rem;
        }

        .table-card h6 {
            font-weight: 700;
            color: #1e293b;
            margin: 0 0 .8rem;
            padding-right: 1.8rem;
        }

        table.stats-table {
            width: 100%;
            border-collapse: collapse;
            font-size: .85rem;
        }

        table.stats-table th {
            background: #e7f1ff;
            color: #0b3d91;
            text-align: left;
            padding: .55rem .6rem;
        }

        table.stats-table td {
            padding: .5rem .6rem;
            border-bottom: 1px solid #eef2f7;
            color: #334155;
        }

        table.stats-table tr:hover td {
            background: #f8fafc;
        }

        .pill {
            display: inline-block;
            padding: .15rem .55rem;
            border-radius: 999px;
            font-size: .72rem;
            font-weight: 700;
        }

        .pill-ok {
            background: #d1fae5;
            color: #065f46;
        }

        .pill-prob {
            background: #fee2e2;
            color: #991b1b;
        }

        .muted {
            color: #94a3b8;
        }

        .loading {
            text-align: center;
            padding: 3rem;
            color: #64748b;
        }

        .empty {
            text-align: center;
            padding: 3rem;
            color: #94a3b8;
        }

        /* --- PULSANTINO "?" INFO --- */
        .info-btn {
            position: absolute;
            top: .6rem;
            right: .6rem;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            border: none;
            cursor: pointer;
            background: #e2e8f0;
            color: #475569;
            font-size: .72rem;
            font-weight: 800;
            line-height: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0;
            transition: .15s;
            z-index: 5;
        }

        .info-btn:hover {
            background: #2563eb;
            color: #fff;
        }

        /* box spiegazione */
        .info-pop {
            position: absolute;
            top: 2.1rem;
            right: .6rem;
            width: 250px;
            max-width: 80vw;
            background: #0f172a;
            color: #f1f5f9;
            border-radius: .6rem;
            padding: .7rem .8rem;
            font-size: .8rem;
            line-height: 1.4;
            font-weight: 400;
            text-transform: none;
            letter-spacing: normal;
            box-shadow: 0 8px 24px rgba(0, 0, 0, .25);
            z-index: 50;
            display: none;
        }

        .info-pop.show {
            display: block;
        }

        .info-pop strong {
            color: #fff;
        }

        .info-pop .info-pop-title {
            display: block;
            font-weight: 800;
            margin-bottom: .25rem;
            color: #fff;
        }
    </style>
</head>

<body>
    <div class="wrapper toggled">
        <?php include('include/navbar.php'); ?>
        <?php include('include/topbar.php'); ?>

        <div class="page-wrapper">
            <div class="page-content">

                <div class="stats-header">
                    <h4><i class="bi bi-bar-chart-line"></i> Statistiche Produzione</h4>
                    <div class="header-actions">
                        <a class="hbtn active" href="production_stats.php"><i class="bi bi-speedometer2"></i> Produzione</a>
                        <a class="hbtn" href="pause_stats.php"><i class="bi bi-pause-circle"></i> Pause &amp; Fermi</a>
                        <a class="hbtn" href="production_dashboard.php">Torna</a>
                    </div>
                </div>

                <div class="filters-bar">
                    <div><label>Da (data)</label><input type="date" id="fDateFrom"></div>
                    <div><label>A (data)</label><input type="date" id="fDateTo"></div>
                    <div style="grid-column:span 2;">
                        <label>Linee</label>
                        <div class="line-buttons" id="lineButtons">
                            <?php foreach ($linee as $l): ?>
                                <button type="button" class="line-btn2 active" data-line="<?= (int)$l['id'] ?>"
                                    style="background:<?= htmlspecialchars($l['color'] ?: '#3b82f6') ?>;">
                                    <?= htmlspecialchars($l['name']) ?>
                                </button>
                            <?php endforeach; ?>
                        </div>
                    </div>
                    <div><label>Matrice</label><select id="fMatrice">
                            <option value="">Tutte</option>
                            <?php foreach ($matrici as $m): ?><option value="<?= (int)$m['id'] ?>"><?= htmlspecialchars($m['nome']) ?></option><?php endforeach; ?>
                        </select></div>
                    <div><label>Mescola</label><select id="fMescola">
                            <option value="">Tutte</option>
                            <?php foreach ($mescole as $me): ?><option value="<?= (int)$me['id'] ?>"><?= htmlspecialchars($me['nome']) ?></option><?php endforeach; ?>
                        </select></div>
                    <div>
                        <label>Vista temporale</label>
                        <div class="gran-toggle">
                            <button type="button" class="gran-btn active" data-gran="day">Giorno</button>
                            <button type="button" class="gran-btn" data-gran="month">Mese</button>
                        </div>
                    </div>
                    <div class="filters-actions">
                        <button class="btn-apply" id="btnApply"><i class="bi bi-funnel"></i> Applica</button>
                        <button class="btn-reset" id="btnReset">Reset</button>
                    </div>
                </div>

                <div class="kpi-grid" id="kpiGrid">
                    <div class="loading">Caricamento…</div>
                </div>

                <div class="charts-grid" id="chartsGrid" style="display:none;">
                    <div class="chart-card wide">
                        <button type="button" class="info-btn" data-info="Mostra come l'efficienza tempo cambia nel periodo scelto. In vista Giorno un punto per giorno, in vista Mese un punto per mese. Guarda la tendenza: sta salendo o scendendo? I cali indicano giornate con molti fermi." data-title="Efficienza nel tempo">?</button>
                        <h6 id="titSerie">Efficienza tempo nel periodo (%)</h6>
                        <div class="chart-wrap"><canvas id="chartSerie"></canvas></div>
                    </div>
                    <div class="chart-card">
                        <button type="button" class="info-btn" data-info="Confronta l'efficienza tempo delle diverse linee. Individua a colpo d'occhio la linea che perde più tempo in pause rispetto alle altre." data-title="Efficienza per linea">?</button>
                        <h6>Efficienza tempo per linea (%)</h6>
                        <div class="chart-wrap"><canvas id="chartEffLinea"></canvas></div>
                    </div>
                    <div class="chart-card">
                        <button type="button" class="info-btn" data-info="Quanto è stata sfruttata ogni linea rispetto alla sua capacità massima. Barre basse = linee spesso ferme o scariche di lavoro; barre alte = linee molto impegnate." data-title="Saturazione linea">?</button>
                        <h6>Saturazione linea (% su capacità)</h6>
                        <div class="chart-wrap"><canvas id="chartSat"></canvas></div>
                    </div>
                    <div class="chart-card">
                        <button type="button" class="info-btn" data-info="Per ogni linea, il confronto tra chili buoni prodotti (viola) e chili scartati (rosso). Una barra rossa alta rispetto alla produzione segnala un problema di qualità." data-title="Kg prodotti vs scarto">?</button>
                        <h6>Kg prodotti vs scarto per linea</h6>
                        <div class="chart-wrap"><canvas id="chartKgLinea"></canvas></div>
                    </div>
                    <div class="chart-card">
                        <button type="button" class="info-btn" data-info="La percentuale di scarto di ciascuna linea. Confronta le linee tra loro: quale scarta di più in proporzione a quanto produce?" data-title="Scarto per linea">?</button>
                        <h6>Scarto % per linea</h6>
                        <div class="chart-wrap"><canvas id="chartScartoLinea"></canvas></div>
                    </div>
                </div>

                <div class="table-card" id="tableCard" style="display:none;">
                    <button type="button" class="info-btn" data-info="Ogni riga è una lavorazione conclusa: data, linea, matrice, cliente, mescole, tempi (occupato / pause / netto), efficienza, chili, metri, scarto ed esito. Esito 'Completata' = chiusura normale; 'Problema' = interrotta per un guasto." data-title="Dettaglio produzioni">?</button>
                    <h6>Dettaglio produzioni</h6>
                    <table class="stats-table">
                        <thead>
                            <tr>
                                <th>Data</th>
                                <th>Linea</th>
                                <th>Matrice</th>
                                <th>Cliente</th>
                                <th>Mescole</th>
                                <th>Occupato</th>
                                <th>Pause</th>
                                <th>Netto</th>
                                <th>Eff.%</th>
                                <th>Kg</th>
                                <th>Mt</th>
                                <th>Scarto</th>
                                <th>Scarto%</th>
                                <th>Esito</th>
                            </tr>
                        </thead>
                        <tbody id="tableBody"></tbody>
                    </table>
                </div>

            </div><!-- /.page-content -->
        </div><!-- /.page-wrapper -->
    </div><!-- /.wrapper -->

    <?php include('jsinclude.php'); ?>
    <script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.1/dist/chart.umd.min.js"></script>
    <script>
        function secToHms(s) {
            s = Math.max(0, parseInt(s || 0, 10));
            const h = String(Math.floor(s / 3600)).padStart(2, '0'),
                m = String(Math.floor((s % 3600) / 60)).padStart(2, '0'),
                x = String(s % 60).padStart(2, '0');
            return `${h}:${m}:${x}`;
        }

        function fmtDateIt(iso) {
            if (!iso) return '-';
            const p = iso.split('-');
            return p.length === 3 ? `${p[2]}/${p[1]}/${p[0]}` : iso;
        }

        function fmtMonth(ym) {
            if (!ym) return '-';
            const p = ym.split('-');
            if (p.length < 2) return ym;
            const mesi = ['gen', 'feb', 'mar', 'apr', 'mag', 'giu', 'lug', 'ago', 'set', 'ott', 'nov', 'dic'];
            return `${mesi[parseInt(p[1],10)-1]} ${p[0]}`;
        }

        function num(v, d = 2) {
            return Number(v || 0).toLocaleString('it-IT', {
                minimumFractionDigits: d,
                maximumFractionDigits: d
            });
        }
        let charts = {};

        function destroyChart(k) {
            if (charts[k]) {
                charts[k].destroy();
                charts[k] = null;
            }
        }
        let currentGran = 'day';

        // Testi spiegazione per i KPI (chiave = data-kpi)
        const KPI_INFO = {
            n_produzioni: {
                t: "Produzioni",
                d: "Quante lavorazioni sono state completate nel periodo e con i filtri scelti. Dà il contesto agli altri numeri."
            },
            eff_tempo: {
                t: "Efficienza tempo",
                d: "Di tutto il tempo in cui la linea è stata impegnata, quanta parte è stata davvero produttiva (non in pausa). Più è alta, meglio è. 100% = nessuna pausa."
            },
            saturazione: {
                t: "Saturazione",
                d: "Quanto è stata sfruttata la linea rispetto a quanto poteva lavorare al massimo (capacità giornaliera). Bassa = linea rimasta ferma o scarica di lavoro."
            },
            pause: {
                t: "Tempo in pausa",
                d: "Il tempo totale in cui le linee sono rimaste ferme. Diviso tra pianificato (previsto, es. cambio turno) e non pianificato (imprevisto, es. guasti). È il non pianificato da ridurre."
            },
            kg: {
                t: "Kg prodotti",
                d: "I chili totali prodotti nel periodo (sotto, anche i metri). È il volume di produzione."
            },
            scarto: {
                t: "Scarto",
                d: "La percentuale di materiale scartato sul totale lavorato. Più è bassa, meglio è. In salita segnala un problema di qualità."
            },
        };

        function infoBtn(key) {
            const i = KPI_INFO[key];
            if (!i) return '';
            return `<button type="button" class="info-btn" data-title="${i.t}" data-info="${i.d.replace(/"/g,'&quot;')}">?</button>`;
        }

        function renderKpi(k) {
            $('#kpiGrid').html(`
                <div class="kpi-card">${infoBtn('n_produzioni')}<div class="kpi-label">Produzioni</div><div class="kpi-value">${k.n_produzioni}</div><div class="kpi-sub">record conclusi</div></div>
                <div class="kpi-card green">${infoBtn('eff_tempo')}<div class="kpi-label">Efficienza tempo</div><div class="kpi-value">${k.eff_tempo}%</div><div class="kpi-sub">netto / occupato</div></div>
                <div class="kpi-card teal">${infoBtn('saturazione')}<div class="kpi-label">Saturazione</div><div class="kpi-value">${k.saturazione}%</div><div class="kpi-sub">su ${k.giorni_range} gg di capacità</div></div>
                <div class="kpi-card amber">${infoBtn('pause')}<div class="kpi-label">Tempo in pausa</div><div class="kpi-value" style="font-size:1.25rem;">${secToHms(k.tot_pause_s)}</div><div class="kpi-sub">pian. ${secToHms(k.planned_s)} · non ${secToHms(k.unplanned_s)}</div></div>
                <div class="kpi-card violet">${infoBtn('kg')}<div class="kpi-label">Kg prodotti</div><div class="kpi-value" style="font-size:1.4rem;">${num(k.tot_kg)}</div><div class="kpi-sub">${num(k.tot_mt)} metri</div></div>
                <div class="kpi-card red">${infoBtn('scarto')}<div class="kpi-label">Scarto</div><div class="kpi-value" style="font-size:1.4rem;">${k.scarto_perc_tot}%</div><div class="kpi-sub">${num(k.tot_scarto)} kg scartati</div></div>
            `);
        }

        function renderCharts(d) {
            const linee = d.per_linea || [],
                serie = d.serie || [],
                gran = d.granularity;
            const labels = serie.map(x => gran === 'month' ? fmtMonth(x.periodo) : fmtDateIt(x.periodo));
            $('#titSerie').text(gran === 'month' ? 'Efficienza tempo per mese (%)' : 'Efficienza tempo per giorno (%)');

            destroyChart('serie');
            charts.serie = new Chart($('#chartSerie'), {
                type: 'line',
                data: {
                    labels,
                    datasets: [{
                        label: 'Efficienza %',
                        data: serie.map(x => x.eff_tempo),
                        borderColor: '#10b981',
                        backgroundColor: 'rgba(16,185,129,.15)',
                        fill: true,
                        tension: .3,
                        pointRadius: 3
                    }]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    scales: {
                        y: {
                            beginAtZero: true,
                            max: 100
                        }
                    },
                    plugins: {
                        legend: {
                            display: false
                        }
                    }
                }
            });

            destroyChart('effLinea');
            charts.effLinea = new Chart($('#chartEffLinea'), {
                type: 'bar',
                data: {
                    labels: linee.map(x => x.linea),
                    datasets: [{
                        label: 'Efficienza %',
                        data: linee.map(x => x.eff_tempo),
                        backgroundColor: linee.map(x => x.color || '#3b82f6')
                    }]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    scales: {
                        y: {
                            beginAtZero: true,
                            max: 100
                        }
                    },
                    plugins: {
                        legend: {
                            display: false
                        }
                    }
                }
            });

            destroyChart('sat');
            charts.sat = new Chart($('#chartSat'), {
                type: 'bar',
                data: {
                    labels: linee.map(x => x.linea),
                    datasets: [{
                        label: 'Saturazione %',
                        data: linee.map(x => x.saturazione),
                        backgroundColor: linee.map(x => x.color || '#14b8a6')
                    }]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    scales: {
                        y: {
                            beginAtZero: true,
                            max: 100
                        }
                    },
                    plugins: {
                        legend: {
                            display: false
                        }
                    }
                }
            });

            destroyChart('kgLinea');
            charts.kgLinea = new Chart($('#chartKgLinea'), {
                type: 'bar',
                data: {
                    labels: linee.map(x => x.linea),
                    datasets: [{
                        label: 'Kg prodotti',
                        data: linee.map(x => x.kg),
                        backgroundColor: '#8b5cf6'
                    }, {
                        label: 'Kg scarto',
                        data: linee.map(x => x.scarto),
                        backgroundColor: '#ef4444'
                    }]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    scales: {
                        y: {
                            beginAtZero: true
                        }
                    }
                }
            });

            destroyChart('scartoLinea');
            charts.scartoLinea = new Chart($('#chartScartoLinea'), {
                type: 'bar',
                data: {
                    labels: linee.map(x => x.linea),
                    datasets: [{
                        label: 'Scarto %',
                        data: linee.map(x => x.scarto_perc),
                        backgroundColor: '#f59e0b'
                    }]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    scales: {
                        y: {
                            beginAtZero: true
                        }
                    },
                    plugins: {
                        legend: {
                            display: false
                        }
                    }
                }
            });
        }

        function renderTable(rows) {
            if (!rows || !rows.length) {
                $('#tableBody').html('<tr><td colspan="14" class="empty">Nessun dato per i filtri selezionati</td></tr>');
                return;
            }
            let html = '';
            rows.forEach(r => {
                const esito = (String(r.id_status) === '8') ? '<span class="pill pill-prob">Problema</span>' : '<span class="pill pill-ok">Completata</span>';
                const eff = (r.occupato_s > 0) ? Math.round(r.netto_s / r.occupato_s * 100) : 0;
                html += `<tr><td>${fmtDateIt(r.Data)}</td><td>${r.linea||'-'}</td>
                    <td>${r.matrice||'-'}${r.note_extra?'<div class="muted" style="font-size:.72rem;">'+r.note_extra+'</div>':''}</td>
                    <td>${r.cliente||'-'}</td><td>${r.mescole||'<span class="muted">-</span>'}</td>
                    <td>${secToHms(r.occupato_s)}</td><td>${secToHms(r.pause_s)}</td><td>${secToHms(r.netto_s)}</td>
                    <td>${eff}%</td><td>${num(r.kgprod)}</td><td>${num(r.mtprod)}</td><td>${num(r.scarto)}</td>
                    <td>${r.scarto_perc!==null?num(r.scarto_perc)+'%':'-'}</td><td>${esito}</td></tr>`;
            });
            $('#tableBody').html(html);
        }

        function selectedLines() {
            return $('#lineButtons .line-btn2.active').map(function() {
                return $(this).data('line');
            }).get().join(',');
        }

        function loadStats() {
            $('#kpiGrid').html('<div class="loading">Caricamento…</div>');
            $('#chartsGrid, #tableCard').hide();
            $.getJSON('', {
                    ajax: 1,
                    date_from: $('#fDateFrom').val(),
                    date_to: $('#fDateTo').val(),
                    lines: selectedLines(),
                    matrice_id: $('#fMatrice').val(),
                    mescola_id: $('#fMescola').val(),
                    granularity: currentGran
                },
                function(r) {
                    if (!r.success) {
                        $('#kpiGrid').html('<div class="empty">Errore: ' + (r.msg || '') + '</div>');
                        return;
                    }
                    renderKpi(r.kpi);
                    if (r.kpi.n_produzioni === 0) {
                        $('#chartsGrid, #tableCard').hide();
                        $('#tableBody').html('');
                        return;
                    }
                    $('#chartsGrid, #tableCard').show();
                    renderCharts(r);
                    renderTable(r.dettaglio);
                }).fail(function() {
                $('#kpiGrid').html('<div class="empty">Errore di comunicazione con il server.</div>');
            });
        }

        $(function() {
            const today = new Date(),
                past = new Date();
            past.setDate(today.getDate() - 30);
            $('#fDateTo').val(today.toISOString().slice(0, 10));
            $('#fDateFrom').val(past.toISOString().slice(0, 10));

            $('#lineButtons').on('click', '.line-btn2', function() {
                $(this).toggleClass('active');
                if ($('#lineButtons .line-btn2.active').length === 0) {
                    $('#lineButtons .line-btn2').addClass('active');
                }
                loadStats();
            });
            $('.gran-btn').on('click', function() {
                $('.gran-btn').removeClass('active');
                $(this).addClass('active');
                currentGran = $(this).data('gran');
                loadStats();
            });
            $('#btnApply').on('click', loadStats);
            $('#btnReset').on('click', function() {
                $('#lineButtons .line-btn2').addClass('active');
                $('#fMatrice,#fMescola').val('');
                $('.gran-btn').removeClass('active');
                $('.gran-btn[data-gran="day"]').addClass('active');
                currentGran = 'day';
                $('#fDateTo').val(today.toISOString().slice(0, 10));
                $('#fDateFrom').val(past.toISOString().slice(0, 10));
                loadStats();
            });

            // --- POPOVER INFO (delegato: funziona anche sui box creati via JS) ---
            $(document).on('click', '.info-btn', function(e) {
                e.stopPropagation();
                const $btn = $(this);
                // se questo popover è già aperto, chiudilo
                const alreadyOpen = $btn.next('.info-pop').length && $btn.next('.info-pop').hasClass('show');
                $('.info-pop').remove(); // chiudi tutti gli altri
                if (alreadyOpen) return;
                const title = $btn.data('title') || '';
                const text = $btn.data('info') || '';
                const $pop = $('<div class="info-pop show"></div>');
                $pop.html('<span class="info-pop-title">' + title + '</span>' + text);
                $btn.after($pop);
            });
            // chiudi cliccando fuori
            $(document).on('click', function() {
                $('.info-pop').remove();
            });

            loadStats();
        });
    </script>
</body>

</html>