using Elternbeirat.Contracts;
using Elternbeirat.PocketBase;
using Elternbeirat.Web.Shared;
using Microsoft.AspNetCore.Components;

namespace Elternbeirat.Web.Features.Pages;

public partial class ContentPage
{
    [LoggerMessage(
        Level = LogLevel.Warning,
        Message = "Could not load page '{slug}' from PocketBase.")]
    private static partial void LogLoadFailed(
        ILogger logger,
        string slug,
        Exception exception);

    [Parameter]
    public string Slug { get; set; } = string.Empty;

    [Inject]
    private PocketBaseClient PocketBase { get; set; } = null!;

    [Inject]
    private ILogger<ContentPage> Logger { get; set; } = null!;

    [CascadingParameter]
    private HttpContext? HttpContext { get; set; }

    private Page? _page;

    // The page body rendered from Markdown to HTML, ready to emit as a
    // MarkupString in the markup.
    private MarkupString Body => (MarkupString)Markdown.ToHtml(_page?.Body);

    protected override async Task OnParametersSetAsync()
    {
        try
        {
            var pages = await PocketBase.GetPagesAsync();
            _page = pages.FirstOrDefault(
                p => string.Equals(p.Slug, Slug, StringComparison.OrdinalIgnoreCase));
        }
        catch (HttpRequestException ex)
        {
            // Source unreachable -> treat as "not found" rather than a 500. The
            // 404 branch below serves the friendly /not-found page.
            LogLoadFailed(Logger, Slug, ex);
            _page = null;
        }

        // Unknown slug (or unreachable source) -> 404, so
        // UseStatusCodePagesWithReExecute serves the /not-found page instead of an
        // empty 200 response.
        if (_page is null && HttpContext is not null)
        {
            HttpContext.Response.StatusCode = StatusCodes.Status404NotFound;
        }
    }
}