@using Microsoft.EntityFrameworkCore
@using MudBlazor
@using OpenArchival.DataAccess

@page "/articles/{ArticleIdString}"

@if (_article is not null)
{
    @if (_article.ArtifactGroupings.Any()) {
    {
        <MudPaper Class="pa-4 ma-2 rounded overflow-y-auto" Style="max-height: 400px;" Elevation="3">
            <MudText Typo="Typo.h6">Related Artifacts</MudText>
            <MudDivider/>
            
            <MudGrid Justify="Justify.Center" Class="mt-4"> 
            @foreach(ArtifactGrouping grouping in _article.ArtifactGroupings)
            {
                <MudItem xs="12" sm="12" md="8" lg="4">
                    <MudLink Href="@($"/archive/{grouping.Id}")" Target="_blank" Style="text-decoration: none; color: inherit;">

                    <MudCard Style="@($"height: {Math.Floor(400 * 0.7)}px; display: flex; flex-direction: column;")" >
                        @if (grouping.ChildArtifactEntries[0].Files.Any())
                        {
                            <MudCardMedia Image="@($"/api/files/{grouping.ChildArtifactEntries[0].Files[0].Id}")"/>
                        }

                        <MudCardContent Style=@($"flex-grow: 1; overflow-y: clip; height:{Math.Floor(400 * 0.3)}px;")>
                            <MudText Typo="Typo.h5">@grouping.Title</MudText>
                            <MudText Typo="Typo.body2">@grouping.Description</MudText>
                        </MudCardContent>
                    </MudCard>

                    </MudLink>
               </MudItem>
            }
            </MudGrid>
        </MudPaper>
    }
    }


    <MudPaper Class="pa-4 ma-2 rounded" Elevation="3">
        <MudGrid Justify="Justify.Center" Class="mb-2">
            <MudItem>
                <MudImage ObjectPosition=ObjectPosition.Center Class="rounded-1g" Src=@($"/api/files/{_article.MainPhoto.Id}") Height="400"></MudImage>
            </MudItem>
        </MudGrid>
        <MudText Typo="Typo.h6">@_article.Title</MudText>
        <MudDivider/>
        <MudText Typo="Typo.caption">Posted: @_article.CreationTime.Hour:@_article.CreationTime.Minute @_article.CreationTime.Month/@_article.CreationTime.Day/@_article.CreationTime.Year</MudText>
        <MudText Typo="Typo.caption">Updated: @_article.ModifiedTime.Hour:@_article.ModifiedTime.Minute @_article.ModifiedTime.Month/@_article.ModifiedTime.Day/@_article.ModifiedTime.Year</MudText>
        <MudDivider/>
        <MudText Typo="Typo.caption" style="font-weight: 100;">Tags:</MudText>
        <OpenArchival.Blazor.CustomComponents.ChipContainer T="BlogPostTag" @bind-Items=_article.Tags DeleteEnabled=false></OpenArchival.Blazor.CustomComponents.ChipContainer>
    </MudPaper>

    <MudPaper Class="pa-4 ma-2 rounded" Elevation="3">
        @((MarkupString)_article.Content)
    </MudPaper>
}
@inject IArtifactGroupingProvider GroupingProvider;
@inject NavigationManager NavigationManager;
@inject IDbContextFactory<ApplicationDbContext> ContextFactory; 
@code {
    [Parameter]
    public string ArticleIdString { get; set; }

    /// <summary>
    /// The converted grouping id from the URL
    /// </summary>
    private int _articleId { get; set; }

    private BlogPost _article { get; set; } = default!;

    protected override async Task OnParametersSetAsync()
    {
        if (!int.TryParse(ArticleIdString, out int articleId))
        {
            NavigationManager.NavigateTo("/article-not-found");
            return;
        }

        _articleId = articleId;

        await using var context = await ContextFactory.CreateDbContextAsync();

        // --- FIX: Added .Include(a => a.Views) AND .FirstOrDefaultAsync(a => a.Id == _articleId)
        var article = await context.BlogPosts
            .Include(a => a.Views) 
            .Include(a => a.ArtifactGroupings)
                .ThenInclude(g => g.ChildArtifactEntries)
                    .ThenInclude(e => e.Files)
            .Include(article=>article.Views)
            .Include(article=>article.Tags)
            .Include(article=>article.MainPhoto)
            .FirstOrDefaultAsync(a => a.Id == _articleId); // <-- FIX 2: Filter by the correct ID

        if (article is null)
        {
            NavigationManager.NavigateTo("/article-not-found");
            return;
        }

        _article = article;

        // --- This logic will now work correctly ---
        if (_article.Views is null)
        {
            // This article has never been viewed, create a new view count
            var viewCount = new BlogPostViewCount() { Post = _article, Views = 1 };
            context.Add(viewCount); // Add the new count to the context
            _article.Views = viewCount; // Associate it with the article
        }
        else
        {
            // It has been viewed, just increment the count
            _article.Views.Views++;
        }

        await context.SaveChangesAsync(); // This will now correctly INSERT or UPDATE

        // StateHasChanged() is not strictly necessary here, but doesn't hurt.
        StateHasChanged();

        await base.OnParametersSetAsync();
    }

}