@page "/admin/announcements"
@attribute [Authorize]
@using TaxBaik.Web.Services
@using TaxBaik.Domain.Entities
@inject IAnnouncementBrowserClient AnnouncementClient
@inject NavigationManager Navigation
@inject IJSRuntime JS

<PageTitle>공지사항 관리</PageTitle>

<section class="admin-page-hero">
    <div>
        <div class="admin-eyebrow">Homepage</div>
        <h1 class="admin-page-title">공지사항 관리</h1>
        <p class="admin-page-subtitle">홈페이지 상단에 노출되는 공지사항을 등록하고 관리합니다.</p>
    </div>
    <a class="site-button primary" href="/taxbaik/admin/announcements/create">공지 등록</a>
</section>

<div class="admin-surface">
    @if (announcements is null)
    {
        <Skeleton Count="5" CssClass="taxbaik-skeleton-grid" />
    }
    else if (!announcements.Any())
    {
        <div class="muted">등록된 공지사항이 없습니다.</div>
    }
    else
    {
        <div class="admin-table-wrap">
            <table class="admin-table">
                <thead>
                    <tr>
                        <th>제목</th>
                        <th>유형</th>
                        <th>상태</th>
                        <th>게시 기간</th>
                        <th>순서</th>
                        <th></th>
                    </tr>
                </thead>
                <tbody>
                    @foreach (var item in announcements)
                    {
                        <tr>
                            <td>@item.Title</td>
                            <td><span class="status-pill info">@GetTypeLabel(item.DisplayType)</span></td>
                            <td>
                                @if (IsCurrentlyActive(item))
                                {
                                    <span class="status-pill success">노출 중</span>
                                }
                                else if (!item.IsActive)
                                {
                                    <span class="status-pill default">비활성</span>
                                }
                                else
                                {
                                    <span class="status-pill warning">기간 외</span>
                                }
                            </td>
                            <td class="small">@FormatPeriod(item)</td>
                            <td>@item.SortOrder</td>
                            <td>
                                <div class="admin-actions">
                                    <button type="button" class="admin-icon-button" @onclick="@(() => Navigation.NavigateTo($"/taxbaik/admin/announcements/{item.Id}/edit"))">✎</button>
                                    <button type="button" class="admin-icon-button danger" @onclick="@(() => DeleteAsync(item))">✕</button>
                                </div>
                            </td>
                        </tr>
                    }
                </tbody>
            </table>
        </div>
    }
</div>

@code {
    [CascadingParameter]
    private Task<AuthenticationState>? AuthStateTask { get; set; }

    private List<Announcement>? announcements;

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender && AuthStateTask != null)
        {
            var authState = await AuthStateTask;
            if (authState.User.Identity?.IsAuthenticated == true)
            {
                await LoadAsync();
                StateHasChanged();
            }
        }
    }

    private async Task LoadAsync()
    {
        try
        {
            announcements = (await AnnouncementClient.GetAllAsync()).ToList();
        }
        catch (Exception ex)
        {
            await JS.InvokeVoidAsync("alert", $"오류: {ex.Message}");
            announcements = [];
        }
    }

    private async Task DeleteAsync(Announcement item)
    {
        var confirmed = await JS.InvokeAsync<bool>("confirm", $"'{item.Title}' 공지를 삭제하시겠습니까?");
        if (!confirmed) return;

        try
        {
            var success = await AnnouncementClient.DeleteAsync(item.Id);
            if (success)
            {
                await JS.InvokeVoidAsync("alert", "공지사항이 삭제되었습니다.");
                await LoadAsync();
            }
            else
            {
                await JS.InvokeVoidAsync("alert", "삭제 실패");
            }
        }
        catch (Exception ex)
        {
            await JS.InvokeVoidAsync("alert", $"오류: {ex.Message}");
        }
    }

    private static bool IsCurrentlyActive(Announcement a)
    {
        if (!a.IsActive) return false;
        var now = DateTime.UtcNow;
        if (a.StartsAt.HasValue && a.StartsAt > now) return false;
        if (a.EndsAt.HasValue && a.EndsAt < now) return false;
        return true;
    }

    private static string FormatPeriod(Announcement a)
    {
        var start = a.StartsAt?.ToLocalTime().ToString("MM/dd") ?? "즉시";
        var end = a.EndsAt?.ToLocalTime().ToString("MM/dd") ?? "무기한";
        return $"{start} ~ {end}";
    }

    private static string GetTypeLabel(string type) => type switch
    {
        "urgent" => "긴급",
        "banner" => "배너",
        _ => "일반"
    };
}