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

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $requestId = $_POST['request_id'] ?? null;
    $action = $_POST['action'] ?? null;

    if ($requestId && $action) {
        $newStatus = null;
        if ($action === 'approve') {
            $newStatus = 'System_Reception';
        } elseif ($action === 'reject') {
            $newStatus = 'Rejected';
        }

        if ($newStatus) {
            try {
                $pdo = db();
                $stmt = $pdo->prepare('UPDATE ChangeRequests SET status = :status WHERE id = :id AND status = :current_status');
                $stmt->execute([
                    ':status' => $newStatus,
                    ':id' => $requestId,
                    ':current_status' => 'Dept_Approval_Pending'
                ]);
            } catch (PDOException $e) {
                die("Database error: " . $e->getMessage());
            }
        }
    }
}

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