@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 IJSRuntime JS

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

<section class="admin-page-hero">
    <div>
        <div class="admin-eyebrow">Homepage</div>
        <h1 class="admin-page-title">@(Id.HasValue ? "공지 수정" : "공지 등록")</h1>
    </div>
</section>

<div class="admin-surface" style="max-width:720px;">
    <form class="admin-dialog-card" @onsubmit="SaveAsync" @onsubmit:preventDefault="true">
        <label>제목 * <input class="admin-input" @bind="model.Title" /></label>
        <label>상세 내용 (선택) <textarea class="admin-input" rows="3" @bind="model.Content"></textarea></label>
        <label>유형
            <select class="admin-input" @bind="model.DisplayType">
                <option value="info">일반 (파란색)</option>
                <option value="banner">배너 (주황색)</option>
                <option value="urgent">긴급 (빨간색)</option>
            </select>
        </label>
        <label>노출 순서 <input class="admin-input" type="number" @bind="model.SortOrder" /></label>
        <label>게시 시작일 <input class="admin-input" type="text" placeholder="yyyy-MM-dd" @bind="StartsAtText" /></label>
        <label>게시 종료일 <input class="admin-input" type="text" placeholder="yyyy-MM-dd" @bind="EndsAtText" /></label>
        <label><input type="checkbox" @bind="model.IsActive" /> @(model.IsActive ? "활성화" : "비활성화")</label>
        <div class="admin-dialog-actions">
            <button type="submit" class="site-button primary" disabled="@isSaving">저장</button>
            <button type="button" class="site-button secondary" @onclick='() => Navigation.NavigateTo("/taxbaik/admin/announcements")'>취소</button>
        </div>
    </form>
</div>

@code {
    [Parameter] public int? Id { get; set; }
    private bool isSaving;
    private DateTime? startsAtDate;
    private DateTime? endsAtDate;
    private AnnouncementDto model = new();
    private string StartsAtText { get => startsAtDate?.ToString("yyyy-MM-dd") ?? ""; set => startsAtDate = DateTime.TryParse(value, out var dt) ? dt : null; }
    private string EndsAtText { get => endsAtDate?.ToString("yyyy-MM-dd") ?? ""; set => endsAtDate = DateTime.TryParse(value, out var dt) ? dt : null; }

    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()
    {
        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;
            var result = Id.HasValue ? await AnnouncementClient.UpdateAsync(Id.Value, model) : await AnnouncementClient.CreateAsync(model);
            await JS.InvokeVoidAsync("alert", result != null ? "공지사항이 저장되었습니다." : "저장 실패");
            Navigation.NavigateTo("/taxbaik/admin/announcements");
        }
        catch (Exception ex)
        {
            await JS.InvokeVoidAsync("alert", $"저장 실패: {ex.Message}");
        }
        finally
        {
            isSaving = false;
        }
    }
}