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

header('Content-Type: application/json');

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    die(json_encode(['success' => false, 'error' => 'Method not allowed']));
}

$action = $_POST['action'] ?? '';

try {
    $db = db();
    
    if ($action === 'add_url') {
        $name = $_POST['name'] ?? '';
        $url = $_POST['url'] ?? '';
        if ($name && $url) {
            $stmt = $db->prepare("INSERT INTO urls (name, url) VALUES (?, ?)");
            $stmt->execute([$name, $url]);
            echo json_encode(['success' => true]);
        } else {
            echo json_encode(['success' => false, 'error' => 'Missing parameters']);
        }
    } elseif ($action === 'delete_url') {
        $id = $_POST['id'] ?? 0;
        if ($id) {
            $stmt = $db->prepare("DELETE FROM urls WHERE id = ?");
            $stmt->execute([$id]);
            echo json_encode(['success' => true]);
        }
    } elseif ($action === 'update_settings') {
        $token = $_POST['telegram_bot_token'] ?? '';
        $chat_id = $_POST['telegram_chat_id'] ?? '';
        
        $stmt = $db->prepare("INSERT INTO settings (name, value) VALUES ('telegram_bot_token', ?) ON DUPLICATE KEY UPDATE value = ?");
        $stmt->execute([$token, $token]);
        
        $stmt = $db->prepare("INSERT INTO settings (name, value) VALUES ('telegram_chat_id', ?) ON DUPLICATE KEY UPDATE value = ?");
        $stmt->execute([$chat_id, $chat_id]);
        
        // Auto-register webhook for Telegram commands (/start, /status)
        if (!empty($token)) {
            $protocol = isset($_SERVER['HTTP_X_FORWARDED_PROTO']) ? $_SERVER['HTTP_X_FORWARDED_PROTO'] : (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http");
            $host = isset($_SERVER['HTTP_X_FORWARDED_HOST']) ? $_SERVER['HTTP_X_FORWARDED_HOST'] : (isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : 'localhost');
            
            $webhookUrl = "$protocol://$host/api/telegram_webhook.php";
            
            $url = "https://api.telegram.org/bot$token/setWebhook?url=" . urlencode($webhookUrl);
            $ch = curl_init($url);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            curl_exec($ch);
            curl_close($ch);
        }
        
        echo json_encode(['success' => true]);
    } else {
        echo json_encode(['success' => false, 'error' => 'Unknown action']);
    }
} catch (Exception $e) {
    echo json_encode(['success' => false, 'error' => $e->getMessage()]);
}