35786-vm/sales_analysis.php

<?php
require_once 'db/config.php';

$error_message = null;

try {
    $pdo = db();

    // Get distinct values for filters
    $periode_options_stmt = $pdo->query('SELECT DISTINCT PERIODE FROM tabelmaster WHERE PERIODE IS NOT NULL AND PERIODE != \'\' ORDER BY PERIODE DESC');
    $periode_options = $periode_options_stmt->fetchAll(PDO::FETCH_COLUMN);

    // Handle form submission for analysis
    $analysis_results = [];
    $chart_labels_json = '[]';
    $chart_data_json = '[]';
    $selected_periode = $_POST['periode'] ?? 'all';

    if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['run_analysis'])) {
        $sql = "\n            SELECT\n                NAMA_SALES,\n                SUM(QTY) as total_qty,\n                SUM(QTY * CAST(REPLACE(HARGA, ',', '') AS DECIMAL(15,2))) as total_omzet,\n                AVG(CAST(REPLACE(HARGA, ',', '') AS DECIMAL(15,2))) as avg_price,\n                COUNT(DISTINCT NO_FAKTUR) as transactions_count\n            FROM\n                tabelmaster\n            WHERE 1=1";

        $params = [];
        if ($selected_periode !== 'all') {
            $sql .= ' AND PERIODE = :periode';
            $params[':periode'] = $selected_periode;
        }

        $sql .= ' GROUP BY NAMA_SALES HAVING SUM(QTY) > 0 ORDER BY total_omzet DESC';

        $analysis_stmt = $pdo->prepare($sql);
        $analysis_stmt->execute($params);
        $analysis_results = $analysis_stmt->fetchAll();

        if (!empty($analysis_results)) {
            $chart_labels = [];
            $chart_data = [];
            foreach ($analysis_results as $row) {
                $chart_labels[] = $row['NAMA_SALES'];
                $chart_data[] = $row['total_omzet'];
            }
            $chart_labels_json = json_encode($chart_labels);
            $chart_data_json = json_encode($chart_data);
        }
    }

} catch (PDOException $e) {
    $error_message = "Database error: " . $e->getMessage();
}

require_once 'header.php';
?>

<main class="container">
    <?php if (isset($error_message)): ?>
        <div class="alert alert-danger" role="alert">
            <?php echo htmlspecialchars($error_message); ?>
        </div>
    <?php endif; ?>

    <!-- Analysis Form -->
    <div class="card mb-4">
        <div class="card-header">
            Analisa Penjualan per Sales
        </div>
        <div class="card-body">
            <form method="POST" action="sales_analysis.php#analysis-results">
                <div class="row g-3 align-items-end">
                    <div class="col-md-10">
                        <label for="periode" class="form-label">Periode</label>
                        <select name="periode" id="periode" class="form-select">
                            <option value="all">Semua Periode</option>
                            <?php foreach ($periode_options as $periode): ?>
                                <option value="<?php echo htmlspecialchars($periode); ?>" <?php echo ($selected_periode === $periode) ? 'selected' : ''; ?> >
                                    <?php echo htmlspecialchars($periode); ?>
                                </option>
                            <?php endforeach; ?>
                        </select>
                    </div>
                    <div class="col-md-2">
                        <button type="submit" name="run_analysis" class="btn btn-primary w-100">Jalankan</button>
                    </div>
                </div>
            </form>
        </div>
    </div>

    <!-- Analysis Results -->
    <?php if (!empty($analysis_results)): ?>
    <div class="card mb-4" id="analysis-results">
        <div class="card-header">
            Hasil Analisa
        </div>
        <div class="card-body">
            <div class="table-responsive">
                <table class="table table-bordered table-hover">
                    <thead class="table-light">
                        <tr>
                            <th>Nama Sales</th>
                            <th>Total Kuantitas</th>
                            <th>Total Omzet</th>
                            <th>Harga Rata-rata</th>
                            <th>Jumlah Transaksi</th>
                        </tr>
                    </thead>
                    <tbody>
                        <?php foreach ($analysis_results as $row): ?>
                            <tr>
                                <td><?php echo htmlspecialchars($row['NAMA_SALES']); ?></td>
                                <td><?php echo number_format($row['total_qty']); ?></td>
                                <td>Rp <?php echo number_format($row['total_omzet'], 2, ",", "."); ?></td>
                                <td>Rp <?php echo number_format($row['avg_price'], 2, ",", "."); ?></td>
                                <td><?php echo number_format($row['transactions_count']); ?></td>
                            </tr>
                        <?php endforeach; ?>
                    </tbody>
                </table>
            </div>
            <div class="mt-4">
                <canvas id="salesChart"></canvas>
            </div>
        </div>
    </div>
    <?php elseif ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['run_analysis'])): ?>
    <div class="card mb-4" id="analysis-results">
        <div class="card-header">
            Hasil Analisa
        </div>
        <div class="card-body">
            <div class="alert alert-info">Tidak ada data yang cocok dengan filter yang dipilih.</div>
        </div>
    </div>
    <?php endif; ?>

<script>
if (typeof Chart !== 'undefined' && <?php echo !empty($analysis_results) ? 'true' : 'false'; ?>) {
    const ctx = document.getElementById('salesChart');
    new Chart(ctx, {
        type: 'bar',
        data: {
            labels: <?php echo $chart_labels_json; ?>,
            datasets: [{
                label: 'Total Omzet',
                data: <?php echo $chart_data_json; ?>,
                backgroundColor: 'rgba(13, 110, 253, 0.5)',
                borderColor: 'rgba(13, 110, 253, 1)',
                borderWidth: 1
            }]
        },
        options: {
            scales: {
                y: {
                    beginAtZero: true,
                    ticks: {
                        callback: function(value, index, values) {
                            return 'Rp ' + new Intl.NumberFormat('id-ID').format(value);
                        }
                    }
                }
            },
            plugins: {
                tooltip: {
                    callbacks: {
                        label: function(context) {
                            let label = context.dataset.label || '';
                            if (label) {
                                label += ': ';
                            }
                            if (context.parsed.y !== null) {
                                label += 'Rp ' + new Intl.NumberFormat('id-ID').format(context.parsed.y);
                            }
                            return label;
                        }
                    }
                }
            }
        }
    });
}
</script>

<?php require_once 'footer.php'; ?>