@page "/admin/announcements/create"
@page "/admin/announcements/{Id:int}/edit"
@attribute [Authorize]
@using TaxBaik.Application.DTOs
@using TaxBaik.Web.Services
@inject IAnnouncementBrowserClient AnnouncementClient
@inject NavigationManager Navigation
@inject ISnackbar Snackbar

<PageTitle>@(Id.HasValue ? "공지 수정" : "공지 등록")</PageTitle>

<section class="admin-page-hero">
    <div>
        <MudText Typo="Typo.caption" Class="admin-eyebrow">Homepage</MudText>
        <MudText Typo="Typo.h4" Class="admin-page-title">@(Id.HasValue ? "공지 수정" : "공지 등록")</MudText>
    </div>
</section>

<MudPaper Class="admin-surface" Elevation="0">
    <MudForm @ref="form">
        <MudGrid>
            <MudItem xs="12">
                <MudTextField @bind-Value="model.Title"
                              Label="제목"
                              Variant="Variant.Outlined"
                              Required="true"
                              RequiredError="제목을 입력하세요."
                              HelperText="홈페이지 상단 공지 바에 표시되는 텍스트입니다." />
            </MudItem>

            <MudItem xs="12">
                <MudTextField @bind-Value="model.Content"
                              Label="상세 내용 (선택)"
                              Variant="Variant.Outlined"
                              Lines="3"
                              HelperText="부가 설명이 있을 경우 입력합니다. 없으면 제목만 표시됩니다." />
            </MudItem>

            <MudItem xs="12" sm="6">
                <MudSelect @bind-Value="model.DisplayType"
                           Label="유형"
                           Variant="Variant.Outlined">
                    <MudSelectItem Value="@("info")">일반 (파란색)</MudSelectItem>
                    <MudSelectItem Value="@("banner")">배너 (주황색) — 중요 이벤트</MudSelectItem>
                    <MudSelectItem Value="@("urgent")">긴급 (빨간색) — 마감 임박</MudSelectItem>
                </MudSelect>
            </MudItem>

            <MudItem xs="12" sm="6">
                <MudNumericField @bind-Value="model.SortOrder"
                                 Label="노출 순서"
                                 Variant="Variant.Outlined"
                                 HelperText="숫자가 클수록 먼저 표시됩니다." />
            </MudItem>

            <MudItem xs="12" sm="6">
                <MudDatePicker @bind-Date="startsAtDate"
                               Label="게시 시작일 (비우면 즉시)"
                               Variant="Variant.Outlined"
                               DateFormat="yyyy-MM-dd"
                               Clearable="true" />
            </MudItem>

            <MudItem xs="12" sm="6">
                <MudDatePicker @bind-Date="endsAtDate"
                               Label="게시 종료일 (비우면 무기한)"
                               Variant="Variant.Outlined"
                               DateFormat="yyyy-MM-dd"
                               Clearable="true" />
            </MudItem>

            <MudItem xs="12">
                <MudSwitch @bind-Checked="model.IsActive"
                           Label="@(model.IsActive ? "활성화 (홈페이지에 노출)" : "비활성화 (홈페이지 미노출)")"
                           Color="Color.Primary" />
            </MudItem>
        </MudGrid>

        <div class="d-flex gap-2 mt-4">
            <MudButton Variant="Variant.Filled" Color="Color.Primary"
                       StartIcon="@Icons.Material.Filled.Save"
                       Disabled="isSaving"
                       @onclick="SaveAsync">
                @(isSaving ? "저장 중..." : "저장")
            </MudButton>
            <MudButton Variant="Variant.Outlined"
                       @onclick="@(() => Navigation.NavigateTo("/taxbaik/admin/announcements"))">
                취소
            </MudButton>
        </div>
    </MudForm>
</MudPaper>

@code {
    [Parameter] public int? Id { get; set; }

    private MudForm? form;
    private bool isSaving;
    private DateTime? startsAtDate;
    private DateTime? endsAtDate;

    private AnnouncementDto model = new();

    protected override async Task OnInitializedAsync()
    {
        if (Id.HasValue)
        {
            try
            {
                var entity = await AnnouncementClient.GetByIdAsync(Id.Value);
                if (entity is null)
                {
                    Navigation.NavigateTo("/taxbaik/admin/announcements");
                    return;
                }
                model = new AnnouncementDto
                {
                    Id          = entity.Id,
                    Title       = entity.Title,
                    Content     = entity.Content,
                    DisplayType = entity.DisplayType,
                    IsActive    = entity.IsActive,
                    SortOrder   = entity.SortOrder
                };
                startsAtDate = entity.StartsAt?.ToLocalTime();
                endsAtDate   = entity.EndsAt?.ToLocalTime();
            }
            catch
            {
                Navigation.NavigateTo("/taxbaik/admin/announcements");
            }
        }
    }

    private async Task SaveAsync()
    {
        if (form is null) return;
        await form.Validate();
        if (!form.IsValid) return;

        isSaving = true;
        try
        {
            model.StartsAt = startsAtDate.HasValue
                ? DateTime.SpecifyKind(startsAtDate.Value.Date, DateTimeKind.Local).ToUniversalTime()
                : null;
            model.EndsAt = endsAtDate.HasValue
                ? DateTime.SpecifyKind(endsAtDate.Value.Date.AddDays(1).AddSeconds(-1), DateTimeKind.Local).ToUniversalTime()
                : null;

            if (Id.HasValue)
            {
                var result = await AnnouncementClient.UpdateAsync(Id.Value, model);
                if (result != null)
                    Snackbar.Add("공지사항이 저장되었습니다.", Severity.Success);
                else
                    Snackbar.Add("저장 실패", Severity.Error);
            }
            else
            {
                var result = await AnnouncementClient.CreateAsync(model);
                if (result != null)
                    Snackbar.Add("공지사항이 저장되었습니다.", Severity.Success);
                else
                    Snackbar.Add("저장 실패", Severity.Error);
            }
            Navigation.NavigateTo("/taxbaik/admin/announcements");
        }
        catch (Exception ex)
        {
            Snackbar.Add($"저장 실패: {ex.Message}", Severity.Error);
        }
        finally
        {
            isSaving = false;
        }
    }
}