@page "/admin/blog/create"
@attribute [Authorize]
@rendermode @(new InteractiveServerRenderMode(prerender: false))
@using TaxBaik.Application.DTOs
@using TaxBaik.Application.Services
@using TaxBaik.Domain.Interfaces
@inject BlogService BlogService
@inject ICategoryRepository CategoryRepository
@inject NavigationManager Navigation
@inject ISnackbar Snackbar

<PageTitle>새 포스트 작성</PageTitle>

<section class="admin-page-hero">
    <div>
        <MudText Typo="Typo.caption" Class="admin-eyebrow">Content</MudText>
        <MudText Typo="Typo.h4" Class="admin-page-title">새 포스트 작성</MudText>
        <MudText Typo="Typo.body2" Class="admin-page-subtitle">새로운 블로그 포스트를 작성합니다.</MudText>
    </div>
    <MudButton Variant="Variant.Outlined" StartIcon="@Icons.Material.Filled.Close" @onclick="GoBack">취소</MudButton>
</section>

<MudPaper Class="pa-4 mt-4" Elevation="1">
    <MudForm @ref="form">
        <MudTextField @bind-Value="model.Title" Label="제목 *"
            Variant="Variant.Outlined" Class="mb-4" Required="true" RequiredError="제목을 입력하세요." Counter="100" MaxLength="100" />

        <MudSelect T="int?" @bind-Value="model.CategoryId" Label="카테고리"
            Variant="Variant.Outlined" Class="mb-4">
            @foreach (var category in categories)
            {
                <MudSelectItem T="int?" Value="@((int?)category.Id)">@category.Name</MudSelectItem>
            }
        </MudSelect>

        <div class="mb-4">
            <label class="d-block mb-2" style="font-weight: 500;">본문 내용 (마크다운) *</label>
            <textarea id="markdown-editor" @bind="model.Content" style="display: none;"></textarea>
            <div id="editor-container" style="border: 1px solid #d0d0d0; border-radius: 4px; min-height: 400px;"></div>
        </div>

        <MudTextField @bind-Value="model.Tags" Label="태그 (쉼표로 구분)"
            Variant="Variant.Outlined" Class="mb-4" />

        <MudTextField @bind-Value="model.SeoTitle" Label="SEO 제목"
            Variant="Variant.Outlined" Class="mb-4" />

        <MudTextField @bind-Value="model.SeoDescription" Label="SEO 설명"
            Variant="Variant.Outlined" Lines="3" Class="mb-4" />

        <MudCheckBox @bind-Checked="model.IsPublished" Label="즉시 발행" Class="mb-4" />

        <div class="d-flex gap-2">
            <MudButton Variant="Variant.Filled" Color="Color.Primary"
                @onclick="SavePost">저장</MudButton>
        </div>
    </MudForm>
</MudPaper>

@code {
    private MudForm? form;
    private List<Domain.Entities.Category> categories = [];
    private CreatePostModel model = new();
    private EasyMDE.Editor? editor;

    [Inject]
    private IJSRuntime JS { get; set; } = null!;

    protected override async Task OnInitializedAsync()
    {
        categories = (await CategoryRepository.GetAllAsync()).ToList();
    }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
        {
            await JS.InvokeVoidAsync("window.initMarkdownEditor", "markdown-editor", model.Content ?? "");
        }
    }

    private void GoBack()
    {
        Navigation.NavigateTo("/taxbaik/admin/blog");
    }

    private async Task SavePost()
    {
        if (form == null)
            return;

        // 에디터에서 최신 내용 가져오기
        model.Content = await JS.InvokeAsync<string>("window.getMarkdownContent");

        if (string.IsNullOrWhiteSpace(model.Content))
        {
            Snackbar.Add("본문 내용을 입력하세요.", Severity.Error);
            return;
        }

        await form.Validate();
        if (!form.IsValid)
            return;

        try
        {
            await BlogService.CreateAsync(new CreateBlogPostDto
            {
                Title = model.Title,
                Content = model.Content,
                CategoryId = model.CategoryId,
                Tags = model.Tags,
                SeoTitle = model.SeoTitle,
                SeoDescription = model.SeoDescription,
                IsPublished = model.IsPublished
            });

            Snackbar.Add("포스트가 저장되었습니다.", Severity.Success);
            Navigation.NavigateTo("/taxbaik/admin/blog");
        }
        catch (ValidationException ex)
        {
            Snackbar.Add(ex.Message, Severity.Error);
        }
    }

    private class CreatePostModel
    {
        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; }
    }
}

<!-- EasyMDE 초기화 스크립트 -->
<script>
    window.initMarkdownEditor = function(editorId, initialContent) {
        if (!window.easyMDEInstance) {
            window.easyMDEInstance = new EasyMDE({
                element: document.getElementById(editorId),
                spellChecker: false,
                autoDownloadFontAwesome: false,
                initialValue: initialContent || "",
                toolbar: [
                    "bold", "italic", "strikethrough", "|",
                    "heading", "code", "|",
                    "unordered-list", "ordered-list", "|",
                    "link", "image", "table", "|",
                    "quote", "horizontal-rule", "|",
                    "preview", "side-by-side", "fullscreen", "|",
                    "guide"
                ],
                previewRender: function(plainText) {
                    return marked.parse(plainText);
                }
            });
        }
    };

    window.getMarkdownContent = function() {
        return window.easyMDEInstance ? window.easyMDEInstance.value() : "";
    };
</script>