@page "/feed"
@implements IDisposable
@inject IJSRuntime JS
@inject State State

<RefreshButton></RefreshButton>

<PageHeading title="Feed" icon="fa-solid fa-list-timeline">
  <Description>A feed of all the statuses and pics of the people you follow.</Description>
</PageHeading>

@if (feed != null) foreach (StatusOrPic item in feed) {
  if (item.IsStatus) {
    <StatusCard Status="@item.Status"></StatusCard>
  }
  else if (item.IsPic) {
    <PicCard Pic="@item.Pic"></PicCard>
  }
}

<LoadingCard id="feedLoading" icon="fa-solid fa-list-timeline"></LoadingCard>

@code {
  private IOrderedEnumerable<StatusOrPic>? feed;

  protected override async Task OnInitializedAsync() {
    await base.OnInitializedAsync();
    if (feed == null || feed.Count() == 0) feed = await State.GetFeed();
    State.PropertyChanged += StateChanged;
    State.CanRefresh = true;
    await InvokeAsync(StateHasChanged);
    await JS.InvokeVoidAsync("removeElementById", "feedLoading");
  }

  private async void StateChanged(object? sender, PropertyChangedEventArgs e) {
    if (e.PropertyName == nameof(State.IsRefreshing) && State.IsRefreshing) {
      using (State.GetRefreshToken()) {
        feed = await State.GetFeed(true);
        await InvokeAsync(StateHasChanged);
      }
    }
  }

  public void Dispose() {
    State.PropertyChanged -= StateChanged;
    State.CanRefresh = false;
  }
}