using JoshHeaps.Net.Models;
using JoshHeaps.Net.Services.Implementations;
using JoshHeaps.Net.Services.Interfaces;
using Microsoft.AspNetCore.Mvc;

namespace JoshHeaps.Net.Pages.Socialism;

public class DocModel(ISocialismDocService docService) : SocialismPageModel
{
    public SocialismDoc? Doc { get; private set; }
    public SocialismDoc? Previous { get; private set; }
    public SocialismDoc? Next { get; private set; }

    public IActionResult OnGet(string slug)
    {
        if (slug == SocialismDocService.IndexSlug)
            return RedirectPermanent("/socialism");

        Doc = docService.GetDoc(slug);
        if (Doc is null)
            return NotFound();

        CurrentSlug = slug;
        AllDocs = docService.GetAllDocs();

        var position = AllDocs.FindIndex(d => d.Slug == slug);
        Previous = position > 0 ? AllDocs[position - 1] : null;
        Next = position >= 0 && position < AllDocs.Count - 1 ? AllDocs[position + 1] : null;
        return Page();
    }
}