<?php
include __DIR__ . "/../config/connect.php";
include __DIR__ . "/send_to_app2.php";

/**
 * Ambil 1 data webhook dari queue
 */
$stmt = $pdo->prepare("
    SELECT * FROM whatsapp_webhook_queue
    WHERE status = 'new'
    ORDER BY id ASC
    LIMIT 1
");
$stmt->execute();
$queue = $stmt->fetch(PDO::FETCH_ASSOC);

if (!$queue) {
    exit("NO_QUEUE\n");
}

// LOCK
$pdo->prepare("
    UPDATE whatsapp_webhook_queue
    SET status = 'processing'
    WHERE id = :id
")->execute(['id' => $queue['id']]);

$data = json_decode($queue['payload'], true);

try {

    foreach ($data['entry'] as $entry) {
        foreach ($entry['changes'] ?? [] as $change) {

            $value = $change['value'] ?? [];

            /**
             * ==========================
             * PESAN MASUK
             * ==========================
             */
            foreach ($value['messages'] ?? [] as $message) {

                $from = $message['from'] ?? null;
                $type = $message['type'] ?? null;
                $phone_number_id = $value['metadata']['phone_number_id'] ?? null;
                if (!$from || !$phone_number_id) continue;

                // Token WA
                $stmt = $pdo->prepare("
                    SELECT token_access 
                    FROM whatsapp_cloud_api 
                    WHERE number_id = :id
                ");
                $stmt->execute(['id' => $phone_number_id]);
                $wa = $stmt->fetch(PDO::FETCH_ASSOC);
                if (!$wa) continue;

                $access_token = $wa['token_access'];

                $text = ($type === 'text')
                    ? ($message['text']['body'] ?? '')
                    : "[NON_TEXT:$type]";

                /**
                 * === CEK CONTACT (24 JAM) ===
                 */
                $stmt = $pdo->prepare("
                    SELECT updated_at 
                    FROM contact_number_api 
                    WHERE whatsapp_number = :num
                ");
                $stmt->execute(['num' => $from]);
                $contact = $stmt->fetch(PDO::FETCH_ASSOC);

                $shouldSend = false;
                if (!$contact) {
                    $shouldSend = true;
                    $pdo->prepare("
                        INSERT INTO contact_number_api (whatsapp_number, updated_at)
                        VALUES (:num, NOW())
                    ")->execute(['num' => $from]);
                } else {
                    if ((time() - strtotime($contact['updated_at'])) >= 86400) {
                        $shouldSend = true;
                    }
                }

                /**
                 * === TEMPLATE BY PHONE NUMBER ===
                 */
                switch ($phone_number_id) {
                    case '833144686543436': // Radhika Jaringan Nusantara
                        $template = 'customer_service_contact';
                        $templateBody = 'default';
                        $phoneCS = null;
                        break;
                    case '789423254262077': // DNY
                        $template = 'customer_service_phone';
                        $templateBody = 'default';
                        $phoneCS = null;
                        break;
                    case '1126333367231039': // Mekarmanah
                        $template = 'my_customer_services';
                        $templateBody = 'custom';
                        $phoneCS = 6285893128708;
                        break;
                    case '1120501034475981': // LJN Pasirkuda
                        $template = 'my_customer_services';
                        $templateBody = 'custom';
                        $phoneCS = 6285284485255;
                        break;
                    default:
                        $template = null;
                        $templateBody = null;
                        $phoneCS = null;
                }
                
                // BIKIN SAPAAN SESUAI JAM
                $jam = (int) date('H');
                $sapaan = 'Malam';
                
                if ($jam >= 4 && $jam < 11) {
                    $sapaan = 'Pagi';
                } elseif ($jam >= 11 && $jam < 15) {
                    $sapaan = 'Siang';
                } elseif ($jam >= 15 && $jam < 18) {
                    $sapaan = 'Sore';
                }

                /**
                 * === KIRIM TEMPLATE ===
                 */
                if ($shouldSend && $template) {
                    
                    if ($templateBody == 'default'){
                        $payload = [
                            "messaging_product" => "whatsapp",
                            "to" => $from,
                            "type" => "template",
                            "template" => [
                                "name" => $template,
                                "language" => ["code" => "id"],
                                "components" => []
                            ]
                        ];
                    }
                    
                    if ($templateBody == 'custom'){
                        $payload = [
                            'messaging_product' => 'whatsapp',
                            'recipient_type'    => 'individual',
                            'to'                => $from,
                            'type'              => 'template',
                            'template' => [
                                'name' => 'my_customer_services',
                                'language' => [
                                    'code' => 'id'
                                ],
                                'components' => [
                                    [
                                        'type'       => 'body',
                                        'parameters' => [
                                            [
                                                'type' => 'text',
                                                'text' => $sapaan
                                            ]
                                        ]
                                    ],
                                    [
                                        'type'     => 'button',
                                        'sub_type' => 'url',
                                        'index'    => 0,
                                        'parameters' => [
                                            [
                                                'type' => 'text',
                                                'text' => '?contact_nomor='. $phoneCS
                                            ]
                                        ]
                                    ]
                                ]
                            ]
                        ];
                    }

                    $url = "https://graph.facebook.com/v17.0/$phone_number_id/messages";
                    $ch = curl_init($url);
                    curl_setopt_array($ch, [
                        CURLOPT_HTTPHEADER => [
                            "Authorization: Bearer $access_token",
                            "Content-Type: application/json"
                        ],
                        CURLOPT_POST => true,
                        CURLOPT_POSTFIELDS => json_encode($payload),
                        CURLOPT_RETURNTRANSFER => true
                    ]);
                    $response = curl_exec($ch);
                    curl_close($ch);

                    // Kirim ke app2
                    forwardToApp2([
                        "data" => $payload,
                        "phone_id" => $phone_number_id,
                        "respon" => $response
                    ]);

                    // Update waktu terakhir
                    $pdo->prepare("
                        UPDATE contact_number_api 
                        SET updated_at = NOW()
                        WHERE whatsapp_number = :num
                    ")->execute(['num' => $from]);
                }
            }

            /**
             * ==========================
             * STATUS UPDATE
             * ==========================
             */
            foreach ($value['statuses'] ?? [] as $statusEvent) {

                $waMessageId = $statusEvent['id'] ?? null;
                $status = $statusEvent['status'] ?? null;

                if (!$waMessageId || !$status) continue;

                switch ($status) {
                    case 'sent':      $final = 'PROSES'; break;
                    case 'delivered': $final = 'TERKIRIM'; break;
                    case 'read':      $final = 'DIBACA'; break;
                    case 'failed':    $final = 'GAGAL'; break;
                    default:          $final = strtoupper($status);
                }

                $pdo->prepare("
                    UPDATE master_pesan
                    SET status = :st
                    WHERE wa_message_id = :id
                ")->execute([
                    'st' => $final,
                    'id' => $waMessageId
                ]);
            }
        }
    }

    /**
     * === FORWARD KE WEBHOOK LAIN ===
     */
    $forwardUrl = "https://wacloud.manjapro.net/webhook/receive";
    $ch = curl_init($forwardUrl);
    curl_setopt_array($ch, [
        CURLOPT_POST => true,
        CURLOPT_HTTPHEADER => ["Content-Type: application/json"],
        CURLOPT_POSTFIELDS => $queue['payload'],
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_TIMEOUT => 5,
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_SSL_VERIFYHOST => false
    ]);
    curl_exec($ch);
    curl_close($ch);

    // DONE
    $pdo->prepare("
        UPDATE whatsapp_webhook_queue
        SET status = 'done'
        WHERE id = :id
    ")->execute(['id' => $queue['id']]);

} catch (Exception $e) {

    $pdo->prepare("
        UPDATE whatsapp_webhook_queue
        SET status = 'failed'
        WHERE id = :id
    ")->execute(['id' => $queue['id']]);

    throw $e;
}