@page "/sysadmin/blogs"
@using TIAMWebApp.Shared.Application.Models
@using TIAMWebApp.Shared.Application.Services
@using TIAMSharedUI.Shared
@layout AdminLayout
@inject BlogService BlogService

<div clss="container">
    <h3 class="mb-4">Manage Blog Posts</h3>

    <EditForm Model="@Post" OnValidSubmit="@SavePost">
        <div class="mb-3">
            <label class="form-label">Title</label>
            <InputText class="form-control" @bind-Value="Post.Title" />
        </div>

        <div class="mb-3">
            <label class="form-label">Lead</label>
            <InputText class="form-control" @bind-Value="Post.Lead" />
        </div>

        <div class="mb-3">
            <label class="form-label">Google Drive Link</label>
            <InputText class="form-control" @bind-Value="Post.DriveLink" />
        </div>

        <div class="mb-3">
            <label class="form-label">Tags (comma-separated)</label>
            <InputText class="form-control" @bind-Value="TagsCsv" />
        </div>

        <div class="mb-3">
            <label class="form-label">Cover Image (optional)</label>
            <InputFile OnChange="@HandleFileSelected" />
        </div>

        <button class="btn btn-primary" type="submit" disabled="@IsSaving">
            @if (IsSaving)
            {
                <span class="spinner-border spinner-border-sm"></span> @(IsEditMode ? "Updating..." : "Saving...")
            }
            else
            {
                <span>@(IsEditMode ? "Update Post" : "Save Post")</span>
            }
        </button>

        @if (IsEditMode)
        {
            <button type="button" class="btn btn-secondary ms-2" @onclick="CancelEdit">Cancel</button>
        }
    </EditForm>

    @if (SaveSuccess)
    {
        <div class="alert alert-success mt-3">Post saved successfully!</div>
    }

    <h4 class="mt-5">Existing Posts</h4>

    @if (Posts.Count == 0)
    {
        <p>No blog posts found.</p>
    }
    else
    {
        <table class="table table-bordered mt-3">
            <thead>
                <tr>
                    <th>Title</th>
                    <th>Tags</th>
                    <th>Actions</th>
                </tr>
            </thead>
            <tbody>
                @foreach (var item in Posts)
                {
                    <tr>
                        <td><img src="@item.CoverImage" style="max-height:150px" /></td>
                        <td>@item.Title</td>
                        <td>@string.Join(", ", item.Tags)</td>
                        <td>
                            <button class="btn btn-sm btn-primary me-2" @onclick="() => EditPost(item)">Edit</button>
                            <button class="btn btn-sm btn-danger" @onclick="() => DeletePost(item.Id)">Delete</button>
                        </td>
                    </tr>
                }
            </tbody>
        </table>
    }

</div>

@code {
    private BlogPostMetadata Post = new();
    private List<BlogPostMetadata> Posts = new();
    private IBrowserFile? CoverImage;
    private string TagsCsv = "";
    private bool IsSaving = false;
    private bool SaveSuccess = false;
    private bool IsEditMode = false;

    protected override async Task OnInitializedAsync()
    {
        await LoadPosts();
    }

    private async Task LoadPosts()
    {
        Posts = await BlogService.GetAllPostsAsync();
    }

    private async Task HandleFileSelected(InputFileChangeEventArgs e)
    {
        CoverImage = e.File;
    }

    private async Task SavePost()
    {
        IsSaving = true;
        SaveSuccess = false;

        Post.Tags = TagsCsv.Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries).ToList();

        if (IsEditMode)
        {
            await BlogService.UpdatePostAsync(Post, CoverImage);
        }
        else
        {
            await BlogService.CreatePostAsync(Post, CoverImage);
        }

        IsSaving = false;
        SaveSuccess = true;

        await LoadPosts();
        ResetForm();
    }

    private void EditPost(BlogPostMetadata post)
    {
        Post = new BlogPostMetadata
            {
                Id = post.Id,
                Title = post.Title,
                Lead = post.Lead,
                DriveLink = post.DriveLink,
                Tags = new List<string>(post.Tags),
                CoverImage = post.CoverImage
            };
        TagsCsv = string.Join(", ", post.Tags);
        IsEditMode = true;
        SaveSuccess = false;
    }

    private async Task DeletePost(string id)
    {
        if (await ConfirmDeleteAsync())
        {
            await BlogService.DeletePostAsync(id);
            await LoadPosts();
        }
    }

    private async Task<bool> ConfirmDeleteAsync()
    {
        return await Task.FromResult(true); // Replace with real confirmation popup later
    }

    private void CancelEdit()
    {
        ResetForm();
    }

    private void ResetForm()
    {
        Post = new BlogPostMetadata();
        TagsCsv = "";
        CoverImage = null;
        IsEditMode = false;
    }
}