@using TechHelper.Client.Exam

<MudCard Class="@(IsNested ? "mb-3 pa-2" : "my-4")" Outlined="@IsNested">
	@if (QuestionGroup.Title != string.Empty)
	{
		<MudCardHeader>
			<MudStack>

				<MudStack Row="true" AlignItems="AlignItems.Center">
					<MudText Typo="@(IsNested ? Typo.h6 : Typo.h5)">@QuestionGroup.Id. </MudText> @* 嵌套时字号稍小 *@
					<MudText Typo="@(IsNested ? Typo.h6 : Typo.h5)">@QuestionGroup.Title</MudText>
				</MudStack>
				@if (!string.IsNullOrEmpty(QuestionGroup.QuestionReference))
				{
					<MudText Class="mt-2" Style="white-space: pre-wrap;">@QuestionGroup.QuestionReference</MudText>
				}
			</MudStack>
		</MudCardHeader>
	}
	<MudCardContent>
		@* 渲染直接子题目 *@
		@if (QuestionGroup.SubQuestions != null && QuestionGroup.SubQuestions.Any())
		{
			@foreach (var qitem in QuestionGroup.SubQuestions)
			{
				<MudStack Row="true" AlignItems="AlignItems.Baseline" Class="mb-2">
					<MudText Typo="Typo.body1">@qitem.SubId. </MudText>
					<MudText Typo="Typo.body1">@qitem.Stem</MudText>
				</MudStack>

				@if (qitem.Options != null && qitem.Options.Any())
				{
					@foreach (var oitem in qitem.Options)
					{
						<MudText Typo="Typo.body2" Class="ml-6 mb-2">@oitem.Value</MudText>
					}
				}

				@if (!string.IsNullOrEmpty(qitem.SampleAnswer))
				{
					<MudText Typo="Typo.body2" Color="Color.Tertiary" Class="ml-6 mb-2">示例答案: @qitem.SampleAnswer</MudText>
				}
			}
		}

		@* 递归渲染子题组 *@
		@if (QuestionGroup.SubQuestionGroups != null && QuestionGroup.SubQuestionGroups.Any())
		{
			<MudDivider Class="my-4" />
			@if (!IsNested) // 只有顶级大题才显示“嵌套题组”标题
			{
				<MudText Typo="Typo.subtitle1" Class="mb-2">相关题组:</MudText>
			}
			@foreach (var subGroup in QuestionGroup.SubQuestionGroups)
			{
				<QuestionGroupDisplay QuestionGroup="subGroup" IsNested="true" /> @* 递归调用自身 *@
			}
		}
	</MudCardContent>

</MudCard>

@code {
	[Parameter]
	public TechHelper.Client.Exam.QuestionGroup QuestionGroup { get; set; } = new TechHelper.Client.Exam.QuestionGroup();

	[Parameter]
	public bool IsNested { get; set; } = false; // 判断是否是嵌套的题组，用于调整样式和显示标题
}