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

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

if (!isset($_SESSION['user_id'])) {
    echo json_encode(['success' => false, 'message' => 'You must be logged in to unsubscribe.']);
    exit;
}

$data = json_decode(file_get_contents('php://input'), true);
$subscription_id = $data['subscription_id'] ?? null;

if (!$subscription_id) {
    echo json_encode(['success' => false, 'message' => 'Subscription ID is required.']);
    exit;
}

try {
    $pdo = db();
    $stmt = $pdo->prepare("DELETE FROM weather_subscriptions WHERE id = ? AND user_id = ?");
    $stmt->execute([$subscription_id, $_SESSION['user_id']]);

    if ($stmt->rowCount() > 0) {
        echo json_encode(['success' => true, 'message' => 'Unsubscribed successfully!']);
    } else {
        echo json_encode(['success' => false, 'message' => 'Subscription not found or you do not have permission to delete it.']);
    }
} catch (PDOException $e) {
    echo json_encode(['success' => false, 'message' => 'Database error: ' . $e->getMessage()]);
}
?>