using Microsoft.AspNetCore.Components;
using Blog3000.Shared;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Blog3000.Client.Shared
{
    public partial class StickyNavLinks: IDisposable
    {

        [Inject]
        private BlogDb BlogDb { get; set; }

    
        private List<BlogPostHeader> selectedPosts = new List<BlogPostHeader>();


        public void Dispose()
        {
            BlogDb.BlogPostsChanged -= BlogDb_BlogPostsChanged;
        }

        private async void BlogDb_BlogPostsChanged(object sender, EventArgs e)
        {
            selectedPosts = await SelectPosts();
            StateHasChanged();
        }

        protected override async Task OnInitializedAsync()
        {
            BlogDb.BlogPostsChanged += BlogDb_BlogPostsChanged;
            selectedPosts = await SelectPosts();
        }



        private async Task<List<BlogPostHeader>> SelectPosts()
        {
            var r = await BlogDb.GetHeadersAsync()
                .Where(c => (c.StickyMenuPos ?? -1) >= 0)
                .OrderBy(c => c.StickyMenuPos)
                .ToListAsync();
                
            
            return r;
        }
    }
}