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

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

$linee   = $pdo->query("SELECT id, name, color 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;

    $where  = ["pp.end_pause IS NOT NULL"];
    $params = [];
    if ($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_pause, COUNT(DISTINCT pp.id_production) AS n_prod_con_pause,
            COALESCE(SUM(TIMESTAMPDIFF(SECOND, pp.start_pause, pp.end_pause)),0) AS tot_s,
            COALESCE(AVG(TIMESTAMPDIFF(SECOND, pp.start_pause, pp.end_pause)),0) AS media_s,
            COALESCE(MAX(TIMESTAMPDIFF(SECOND, pp.start_pause, pp.end_pause)),0) AS max_s,
            COALESCE(SUM(CASE WHEN pr.is_problem=1 THEN 1 ELSE 0 END),0) AS n_problemi,
            COALESCE(SUM(CASE WHEN pr.category='planned' THEN TIMESTAMPDIFF(SECOND, pp.start_pause, pp.end_pause) ELSE 0 END),0) AS planned_s,
            COALESCE(SUM(CASE WHEN pr.category='unplanned' THEN TIMESTAMPDIFF(SECOND, pp.start_pause, pp.end_pause) ELSE 0 END),0) AS unplanned_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 $whereSql";
        $stmt = $pdo->prepare($sqlKpi);
        $stmt->execute($params);
        $kpi = $stmt->fetch(PDO::FETCH_ASSOC);

        $sqlMotivo = "SELECT pr.id, pr.name AS motivo, pr.is_problem, pr.category,
            COUNT(pp.id) AS n_pause,
            COALESCE(SUM(TIMESTAMPDIFF(SECOND, pp.start_pause, pp.end_pause)),0) AS durata_s,
            COALESCE(AVG(TIMESTAMPDIFF(SECOND, pp.start_pause, pp.end_pause)),0) AS media_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 $whereSql GROUP BY pr.id ORDER BY durata_s DESC";
        $stmt = $pdo->prepare($sqlMotivo);
        $stmt->execute($params);
        $perMotivo = $stmt->fetchAll(PDO::FETCH_ASSOC);
        $totDurata = array_sum(array_map(fn($x) => (int)$x['durata_s'], $perMotivo));
        $cum = 0;
        foreach ($perMotivo as &$m) {
            $cum += (int)$m['durata_s'];
            $m['cum_perc'] = ($totDurata > 0) ? round($cum / $totDurata * 100, 1) : 0;
            $m['perc'] = ($totDurata > 0) ? round($m['durata_s'] / $totDurata * 100, 1) : 0;
        }
        unset($m);

        $sqlLinea = "SELECT l.name AS linea, l.color,
            COUNT(pp.id) AS n_pause,
            COALESCE(SUM(TIMESTAMPDIFF(SECOND, pp.start_pause, pp.end_pause)),0) AS durata_s,
            COALESCE(SUM(CASE WHEN pr.is_problem=1 THEN 1 ELSE 0 END),0) AS n_problemi
          FROM production_pauses pp
          JOIN productiondata p ON p.id = pp.id_production
          JOIN production_lines l ON l.id = p.id_linea
          JOIN pause_reasons pr ON pr.id = pp.reason_id
          WHERE $whereSql GROUP BY l.id ORDER BY durata_s DESC";
        $stmt = $pdo->prepare($sqlLinea);
        $stmt->execute($params);
        $perLinea = $stmt->fetchAll(PDO::FETCH_ASSOC);

        $sqlGiorno = "SELECT p.Data AS giorno,
            COUNT(pp.id) AS n_pause,
            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 $whereSql GROUP BY p.Data ORDER BY p.Data";
        $stmt = $pdo->prepare($sqlGiorno);
        $stmt->execute($params);
        $perGiorno = $stmt->fetchAll(PDO::FETCH_ASSOC);

        $sqlDett = "SELECT pp.id, pp.start_pause, pp.end_pause, pp.note,
            TIMESTAMPDIFF(SECOND, pp.start_pause, pp.end_pause) AS durata_s,
            pr.name AS motivo, pr.is_problem, pr.category,
            l.name AS linea, m.nome AS matrice, p.id AS prod_id
          FROM production_pauses pp
          JOIN productiondata p ON p.id = pp.id_production
          LEFT JOIN production_lines l ON l.id = p.id_linea
          LEFT JOIN matrice m ON m.id = p.idmatrice
          JOIN pause_reasons pr ON pr.id = pp.reason_id
          WHERE $whereSql ORDER BY pp.start_pause DESC LIMIT 500";
        $stmt = $pdo->prepare($sqlDett);
        $stmt->execute($params);
        $dettaglio = $stmt->fetchAll(PDO::FETCH_ASSOC);

        echo json_encode([
            'success' => true,
            'kpi' => [
                'n_pause' => (int)$kpi['n_pause'],
                'n_prod_con_pause' => (int)$kpi['n_prod_con_pause'],
                'tot_s' => (int)$kpi['tot_s'],
                'media_s' => (int)$kpi['media_s'],
                'max_s' => (int)$kpi['max_s'],
                'n_problemi' => (int)$kpi['n_problemi'],
                'planned_s' => (int)$kpi['planned_s'],
                'unplanned_s' => (int)$kpi['unplanned_s'],
            ],
            'per_motivo' => $perMotivo,
            'per_linea' => $perLinea,
            'per_giorno' => $perGiorno,
            '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 Pause &amp; Fermi</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, #b91c1c, #ef4444);
            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: #b91c1c;
        }

        .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: #b91c1c;
            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);
        }

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

        .btn-apply {
            background: #dc2626;
            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 #ef4444;
        }

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

        .kpi-card.slate {
            border-left-color: #64748b;
        }

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

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

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

        .pill-norm {
            background: #e0e7ff;
            color: #3730a3;
        }

        .pill-plan {
            background: #fef3c7;
            color: #92400e;
        }

        .pill-unplan {
            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: #dc2626;
            color: #fff;
        }

        .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-pause-circle"></i> Statistiche Pause &amp; Fermi</h4>
                    <div class="header-actions">
                        <a class="hbtn" href="production_stats.php"><i class="bi bi-speedometer2"></i> Produzione</a>
                        <a class="hbtn active" 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($l['color'] ?: '#ef4444') ?>;">
                                    <?= htmlspecialchars($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 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-title="Pareto delle causali" data-info="Il grafico più utile. Le barre sono le ore perse per ogni causa, ordinate dalla peggiore. La linea sale e mostra la somma progressiva in percentuale. Regola pratica: poche cause fanno la maggior parte del tempo perso. Concentrati sulle prime 2-3 barre a sinistra.">?</button>
                        <h6>Pareto causali — tempo perso e cumulata</h6>
                        <div class="chart-wrap"><canvas id="chartPareto"></canvas></div>
                    </div>
                    <div class="chart-card">
                        <button type="button" class="info-btn" data-title="Pianificato vs non pianificato" data-info="La fetta di tempo perso previsto (arancione, es. cambio turno, pulizia) contro quello imprevisto (rosso, es. guasti). Una torta sbilanciata verso il rosso significa molte perdite evitabili.">?</button>
                        <h6>Ripartizione tempo: pianificato vs non pianificato</h6>
                        <div class="chart-wrap"><canvas id="chartCat"></canvas></div>
                    </div>
                    <div class="chart-card">
                        <button type="button" class="info-btn" data-title="Tempo perso per linea" data-info="Quale linea perde più ore di produzione a causa dei fermi. Individua la linea più problematica su cui concentrare le attenzioni.">?</button>
                        <h6>Tempo perso per linea (ore)</h6>
                        <div class="chart-wrap"><canvas id="chartLinea"></canvas></div>
                    </div>
                    <div class="chart-card">
                        <button type="button" class="info-btn" data-title="Numero fermi per causale" data-info="Quante volte si verifica ogni causa (la frequenza, non la durata). Una causa che compare tante volte anche se breve indica un problema ricorrente da eliminare alla radice.">?</button>
                        <h6>Numero fermi per causale</h6>
                        <div class="chart-wrap"><canvas id="chartCount"></canvas></div>
                    </div>
                    <div class="chart-card">
                        <button type="button" class="info-btn" data-title="Andamento giornaliero" data-info="Le ore perse giorno per giorno. Individua le giornate nere e cerca cosa è successo (un guasto grave, una fornitura mancata).">?</button>
                        <h6>Andamento fermi giornaliero (ore)</h6>
                        <div class="chart-wrap"><canvas id="chartGiorno"></canvas></div>
                    </div>
                </div>

                <div class="table-card" id="tableCard" style="display:none;">
                    <button type="button" class="info-btn" data-title="Dettaglio eventi" data-info="Ogni riga è un singolo fermo: inizio, fine, durata, motivo, tipo (Problema o Normale), categoria (Pianificato o Non pianificato), linea, matrice e la nota dell'operatore. Il massimo dettaglio per ricostruire cosa è successo in un momento preciso.">?</button>
                    <h6>Dettaglio eventi di pausa</h6>
                    <table class="stats-table">
                        <thead>
                            <tr>
                                <th>Inizio</th>
                                <th>Fine</th>
                                <th>Durata</th>
                                <th>Motivo</th>
                                <th>Tipo</th>
                                <th>Categoria</th>
                                <th>Linea</th>
                                <th>Matrice</th>
                                <th>Prod. #</th>
                                <th>Nota</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 secToH(s) {
            return parseInt(s || 0, 10) / 3600;
        }

        function fmtDT(iso) {
            if (!iso) return '-';
            const d = new Date(iso.replace(' ', 'T'));
            if (isNaN(d)) return iso;
            const p = n => String(n).padStart(2, '0');
            return `${p(d.getDate())}/${p(d.getMonth()+1)} ${p(d.getHours())}:${p(d.getMinutes())}`;
        }

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

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

        // Testi spiegazione per i KPI
        const KPI_INFO = {
            n_pause: {
                t: "Fermi totali",
                d: "Quante volte le linee si sono fermate in pausa nel periodo. Sotto, quante lavorazioni sono state coinvolte."
            },
            tot: {
                t: "Tempo perso",
                d: "Il totale di tutte le pause sommate: il costo in tempo complessivo dei fermi. Confrontalo tra periodi per vedere se migliora."
            },
            media: {
                t: "Durata media",
                d: "Quanto dura in media un singolo fermo (accanto, il fermo più lungo). Se il massimo è molto più alto della media, c'è stato un episodio eccezionale da approfondire."
            },
            problemi: {
                t: "Problemi tecnici",
                d: "Quanti fermi erano dovuti a un guasto o anomalia vera, e la loro percentuale sul totale. È la spia della salute degli impianti."
            },
            planned: {
                t: "Pianificato",
                d: "Il tempo dei fermi previsti (cambio turno, pulizia, manutenzione programmata...). È tempo normale, in parte inevitabile."
            },
            unplanned: {
                t: "Non pianificato",
                d: "Il tempo dei fermi imprevisti (guasti, mancanza materiale, qualità...). È QUESTO il tempo da ridurre: sono le perdite evitabili."
            },
        };

        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) {
            const pctProblemi = k.n_pause > 0 ? Math.round(k.n_problemi / k.n_pause * 100) : 0;
            $('#kpiGrid').html(`
                <div class="kpi-card">${infoBtn('n_pause')}<div class="kpi-label">Fermi totali</div><div class="kpi-value">${k.n_pause}</div><div class="kpi-sub">${k.n_prod_con_pause} produzioni coinvolte</div></div>
                <div class="kpi-card">${infoBtn('tot')}<div class="kpi-label">Tempo perso</div><div class="kpi-value" style="font-size:1.25rem;">${secToHms(k.tot_s)}</div><div class="kpi-sub">totale fermi</div></div>
                <div class="kpi-card slate">${infoBtn('media')}<div class="kpi-label">Durata media</div><div class="kpi-value" style="font-size:1.25rem;">${secToHms(k.media_s)}</div><div class="kpi-sub">max ${secToHms(k.max_s)}</div></div>
                <div class="kpi-card red">${infoBtn('problemi')}<div class="kpi-label">Problemi tecnici</div><div class="kpi-value">${k.n_problemi}</div><div class="kpi-sub">${pctProblemi}% dei fermi</div></div>
                <div class="kpi-card green">${infoBtn('planned')}<div class="kpi-label">Pianificato</div><div class="kpi-value" style="font-size:1.25rem;">${secToHms(k.planned_s)}</div><div class="kpi-sub">fermi previsti</div></div>
                <div class="kpi-card amber">${infoBtn('unplanned')}<div class="kpi-label">Non pianificato</div><div class="kpi-value" style="font-size:1.25rem;">${secToHms(k.unplanned_s)}</div><div class="kpi-sub">da ridurre</div></div>
            `);
        }

        function renderCharts(d) {
            const mot = d.per_motivo || [],
                linee = d.per_linea || [],
                giorni = d.per_giorno || [],
                k = d.kpi;
            destroyChart('pareto');
            charts.pareto = new Chart($('#chartPareto'), {
                data: {
                    labels: mot.map(x => x.motivo),
                    datasets: [{
                            type: 'bar',
                            label: 'Ore perse',
                            data: mot.map(x => +secToH(x.durata_s).toFixed(2)),
                            backgroundColor: mot.map(x => x.category === 'planned' ? '#f59e0b' : '#ef4444'),
                            yAxisID: 'y'
                        },
                        {
                            type: 'line',
                            label: 'Cumulata %',
                            data: mot.map(x => x.cum_perc),
                            borderColor: '#1e293b',
                            backgroundColor: '#1e293b',
                            yAxisID: 'y1',
                            tension: .2,
                            pointRadius: 3
                        }
                    ]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    scales: {
                        y: {
                            beginAtZero: true,
                            position: 'left',
                            title: {
                                display: true,
                                text: 'Ore'
                            }
                        },
                        y1: {
                            beginAtZero: true,
                            max: 100,
                            position: 'right',
                            grid: {
                                drawOnChartArea: false
                            },
                            title: {
                                display: true,
                                text: '% cumulata'
                            }
                        }
                    }
                }
            });
            destroyChart('cat');
            charts.cat = new Chart($('#chartCat'), {
                type: 'doughnut',
                data: {
                    labels: ['Pianificato', 'Non pianificato'],
                    datasets: [{
                        data: [+secToH(k.planned_s).toFixed(2), +secToH(k.unplanned_s).toFixed(2)],
                        backgroundColor: ['#f59e0b', '#ef4444']
                    }]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    plugins: {
                        legend: {
                            position: 'bottom'
                        }
                    }
                }
            });
            destroyChart('linea');
            charts.linea = new Chart($('#chartLinea'), {
                type: 'bar',
                data: {
                    labels: linee.map(x => x.linea),
                    datasets: [{
                        label: 'Ore perse',
                        data: linee.map(x => +secToH(x.durata_s).toFixed(2)),
                        backgroundColor: linee.map(x => x.color || '#3b82f6')
                    }]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    scales: {
                        y: {
                            beginAtZero: true
                        }
                    },
                    plugins: {
                        legend: {
                            display: false
                        }
                    }
                }
            });
            destroyChart('count');
            charts.count = new Chart($('#chartCount'), {
                type: 'bar',
                data: {
                    labels: mot.map(x => x.motivo),
                    datasets: [{
                        label: 'N. fermi',
                        data: mot.map(x => x.n_pause),
                        backgroundColor: '#64748b'
                    }]
                },
                options: {
                    indexAxis: 'y',
                    responsive: true,
                    maintainAspectRatio: false,
                    scales: {
                        x: {
                            beginAtZero: true
                        }
                    },
                    plugins: {
                        legend: {
                            display: false
                        }
                    }
                }
            });
            destroyChart('giorno');
            charts.giorno = new Chart($('#chartGiorno'), {
                type: 'line',
                data: {
                    labels: giorni.map(x => fmtDateIt(x.giorno)),
                    datasets: [{
                        label: 'Ore perse',
                        data: giorni.map(x => +secToH(x.durata_s).toFixed(2)),
                        borderColor: '#ef4444',
                        backgroundColor: 'rgba(239,68,68,.15)',
                        fill: true,
                        tension: .3
                    }]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    scales: {
                        y: {
                            beginAtZero: true
                        }
                    },
                    plugins: {
                        legend: {
                            display: false
                        }
                    }
                }
            });
        }

        function renderTable(rows) {
            if (!rows || !rows.length) {
                $('#tableBody').html('<tr><td colspan="10" class="empty">Nessun fermo per i filtri selezionati</td></tr>');
                return;
            }
            let html = '';
            rows.forEach(r => {
                const tipo = (String(r.is_problem) === '1') ? '<span class="pill pill-prob">Problema</span>' : '<span class="pill pill-norm">Normale</span>';
                const cat = (r.category === 'planned') ? '<span class="pill pill-plan">Pianificato</span>' : '<span class="pill pill-unplan">Non pian.</span>';
                html += `<tr><td>${fmtDT(r.start_pause)}</td><td>${fmtDT(r.end_pause)}</td><td>${secToHms(r.durata_s)}</td>
                    <td>${r.motivo||'-'}</td><td>${tipo}</td><td>${cat}</td>
                    <td>${r.linea||'-'}</td><td>${r.matrice||'-'}</td><td>#${r.prod_id}</td>
                    <td>${r.note?('<span class="muted">'+r.note+'</span>'):'<span class="muted">-</span>'}</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()
                },
                function(r) {
                    if (!r.success) {
                        $('#kpiGrid').html('<div class="empty">Errore: ' + (r.msg || '') + '</div>');
                        return;
                    }
                    renderKpi(r.kpi);
                    if (r.kpi.n_pause === 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();
            });
            $('#btnApply').on('click', loadStats);
            $('#btnReset').on('click', function() {
                $('#lineButtons .line-btn2').addClass('active');
                $('#fMatrice,#fMescola').val('');
                $('#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);
                const alreadyOpen = $btn.next('.info-pop').length && $btn.next('.info-pop').hasClass('show');
                $('.info-pop').remove();
                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);
            });
            $(document).on('click', function() {
                $('.info-pop').remove();
            });

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

</html>