<?php
session_start();
require 'config/db.php';

if (!isset($_SESSION['user_id'])) {
    header('Location: login.php');
    exit();
}

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    $alert_id = $_POST['alert_id'];

    try {
        // Update alert status to resolved
        $stmt = $pdo->prepare("UPDATE alerts SET status = 'resolved' WHERE alert_id = ?");
        $stmt->execute([$alert_id]);

        // Redirect back to the dashboard after acknowledging
        header('Location: dashboard.php');
        exit();
    } catch (PDOException $e) {
        echo "Error: Could not acknowledge alert. " . $e->getMessage();
    }
}
?>