<?php
header('Content-Type: application/json');
include '../config/connect.php';

try {

    // ===============================
    // VALIDASI INPUT
    // ===============================
    if (!isset($_GET['server']) || !isset($_GET['kategori'])) {
        echo json_encode([
            "error" => true,
            "message" => "Parameter tidak lengkap"
        ]);
        exit;
    }

    $server   = trim($_GET['server']);
    $kategori = trim($_GET['kategori']);
    $status   = isset($_GET['status']) ? strtolower(trim($_GET['status'])) : 'semua';

    if ($server === '' || $kategori === '') {
        echo json_encode([
            "error" => true,
            "message" => "Parameter kosong"
        ]);
        exit;
    }

    // ===============================
    // BASE QUERY (WHITELIST STATUS)
    // ===============================
    $sql = "
        SELECT keterangan, SUM(jumlah) as jumlah
        FROM v_analisa_onu_per_server
        WHERE id_data_server = :server
        AND kategori COLLATE utf8mb4_general_ci = :kategori
        AND LOWER(status) IN ('aktif','tidak aktif')
    ";

    $params = [
        ':server'   => $server,
        ':kategori' => $kategori
    ];

    // ===============================
    // FILTER STATUS (JIKA DIPILIH)
    // ===============================
    if ($status === 'aktif' || $status === 'tidak aktif') {
        $sql .= " AND LOWER(status) = :status";
        $params[':status'] = $status;
    }

    $sql .= "
        GROUP BY keterangan
        ORDER BY jumlah DESC
    ";

    $stmt = $pdo->prepare($sql);
    $stmt->execute($params);

    $data = $stmt->fetchAll(PDO::FETCH_ASSOC);

    // ===============================
    // FORMAT DATA
    // ===============================
    $labels = [];
    $values = [];

    $total = 0;
    $empty = 0;

    foreach ($data as $row) {

        $keterangan = $row['keterangan'] ?? 'UNKNOWN';
        $jumlah     = (int) $row['jumlah'];

        $labels[] = $keterangan;
        $values[] = $jumlah;

        $total += $jumlah;

        if (strtoupper(trim($keterangan)) === 'BELUM DIISI') {
            $empty += $jumlah;
        }
    }

    echo json_encode([
        "error" => false,
        "labels" => $labels,
        "values" => $values,
        "summary" => [
            "total"  => $total,
            "empty"  => $empty,
            "filled" => $total - $empty
        ]
    ]);

} catch (PDOException $e) {

    echo json_encode([
        "error" => true,
        "message" => "Database error",
        "detail" => $e->getMessage()
    ]);
}