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

if (!isset($_GET['id']) || empty($_GET['id'])) {
    $_SESSION['error_message'] = 'Invalid activity ID.';
    header('Location: index.php');
    exit;
}

$activity_id = $_GET['id'];

try {
    $pdo = db();
    $stmt = $pdo->prepare("DELETE FROM activities WHERE ActivityID = ?");
    $stmt->execute([$activity_id]);

    if ($stmt->rowCount() > 0) {
        $_SESSION['success_message'] = 'Activity deleted successfully!';
    } else {
        $_SESSION['error_message'] = 'Activity not found or already deleted.';
    }
} catch (PDOException $e) {
    $_SESSION['error_message'] = 'Error deleting activity: ' . $e->getMessage();
}

header('Location: index.php');
exit;