@page "/admin/blog/{id:int}/edit"
@attribute [Authorize]
@using TaxBaik.Application.DTOs
@using TaxBaik.Application.Services
@using TaxBaik.Domain.Interfaces
@inject BlogService BlogService
@inject ICategoryRepository CategoryRepository
@inject NavigationManager Navigation
@inject IJSRuntime JS

<PageTitle>포스트 수정</PageTitle>
<section class="admin-page-hero">
    <div>
        <div class="admin-eyebrow">Content</div>
        <h1 class="admin-page-title">포스트 수정</h1>
        <p class="admin-page-subtitle">블로그 포스트를 수정합니다.</p>
    </div>
    <button type="button" class="site-button secondary" @onclick='() => Navigation.NavigateTo("/taxbaik/admin/blog")'>취소</button>
</section>

@if (isLoading)
{
    <div class="admin-surface mt-4"><Skeleton Count="4" CssClass="taxbaik-skeleton-grid" /></div>
}
else if (post == null)
{
    <div class="admin-surface mt-4">포스트를 찾을 수 없습니다.</div>
}
else
{
    <div class="admin-surface mt-4">
        <form class="admin-dialog-card" @onsubmit="SavePost" @onsubmit:preventDefault="true">
            <label>제목 * <input class="admin-input" @bind="model.Title" /></label>
            <label>카테고리
                <select class="admin-input" @bind="CategoryIdText">
                    <option value="">선택하세요</option>
                    @foreach (var category in categories)
                    {
                        <option value="@category.Id.ToString()">@category.Name</option>
                    }
                </select>
            </label>
            <label>본문 * <textarea class="admin-input" rows="10" @bind="model.Content"></textarea></label>
            <label>태그 (쉼표로 구분) <input class="admin-input" @bind="model.Tags" /></label>
            <label>SEO 제목 <input class="admin-input" @bind="model.SeoTitle" /></label>
            <label>SEO 설명 <textarea class="admin-input" rows="3" @bind="model.SeoDescription"></textarea></label>
            <label><input type="checkbox" @bind="model.IsPublished" /> 발행</label>
            <div class="admin-dialog-actions">
                <button type="submit" class="site-button primary">저장</button>
                <button type="button" class="site-button secondary" @onclick="DeletePost">삭제</button>
            </div>
        </form>
    </div>
}

@code {
    [Parameter] public int Id { get; set; }
    private Domain.Entities.BlogPost? post;
    private List<Domain.Entities.Category> categories = [];
    private EditPostModel model = new();
    private bool isLoading = true;
    private string CategoryIdText { get => model.CategoryId?.ToString() ?? ""; set => model.CategoryId = int.TryParse(value, out var id) ? id : null; }

    protected override async Task OnInitializedAsync()
    {
        try
        {
            post = await BlogService.GetByIdAsync(Id);
            if (post != null)
            {
                categories = (await CategoryRepository.GetAllAsync()).ToList();
                MapPostToModel(post);
            }
        }
        catch (Exception ex)
        {
            await JS.InvokeVoidAsync("alert", $"포스트 로드 실패: {ex.Message}");
        }
        finally
        {
            isLoading = false;
        }
    }

    private void MapPostToModel(Domain.Entities.BlogPost post)
    {
        model.Title = post.Title;
        model.Content = post.Content;
        model.CategoryId = post.CategoryId;
        model.Tags = post.Tags;
        model.SeoTitle = post.SeoTitle;
        model.SeoDescription = post.SeoDescription;
        model.IsPublished = post.IsPublished;
    }

    private async Task SavePost()
    {
        if (post == null) return;
        try
        {
            await BlogService.UpdateAsync(post.Id, new CreateBlogPostDto
            {
                Title = model.Title,
                Content = model.Content,
                CategoryId = model.CategoryId,
                Tags = model.Tags,
                SeoTitle = model.SeoTitle,
                SeoDescription = model.SeoDescription,
                IsPublished = model.IsPublished
            });
            await JS.InvokeVoidAsync("alert", "포스트가 저장되었습니다.");
            Navigation.NavigateTo("/taxbaik/admin/blog");
        }
        catch (ValidationException ex)
        {
            await JS.InvokeVoidAsync("alert", ex.Message);
        }
    }

    private async Task DeletePost()
    {
        if (post == null) return;
        if (!await JS.InvokeAsync<bool>("confirm", "정말 삭제하시겠습니까? 이 작업은 취소할 수 없습니다.")) return;
        await BlogService.DeleteAsync(post.Id);
        await JS.InvokeVoidAsync("alert", "포스트가 삭제되었습니다.");
        Navigation.NavigateTo("/taxbaik/admin/blog");
    }

    private class EditPostModel
    {
        public string Title { get; set; } = "";
        public string Content { get; set; } = "";
        public int? CategoryId { get; set; }
        public string? Tags { get; set; }
        public string? SeoTitle { get; set; }
        public string? SeoDescription { get; set; }
        public bool IsPublished { get; set; }
    }
}