function editAssignment(assignmentId, currentDeadline) {
    const newDeadline = prompt("请输入新的截止日期（格式：YYYY-MM-DD）:", currentDeadline);
    if (newDeadline) {
        fetch(`/teacher/edit_assignment/${assignmentId}`, {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify({ deadline: newDeadline })
        })
        .then(response => {
            if (response.ok) {
                alert('截止日期已更新');
                location.reload();
            } else {
                alert('更新失败');
            }
        })
        .catch(error => console.error('Error:', error));
    }
}

function deleteAssignment(assignmentId) {
    if (confirm("您确定要删除这个作业吗？")) {
        fetch(`/teacher/delete_assignment/${assignmentId}`, {
            method: 'DELETE'
        })
        .then(response => {
            if (response.ok) {
                alert('作业已删除');
                location.reload();
            } else {
                alert('删除失败');
            }
        })
        .catch(error => console.error('Error:', error));
    }
}