Untitled

@code {
    string Navigation { get; set; } = PageType.Index;
    List<FilmDTO> Model { get; set; } = new();
    string Alert { get; set; } = "";
    public FilmDTO Film { get; set; } = new();

    protected override async Task OnInitializedAsync()
    {
        Alert = "";
        Model = await AdminService.GetAsync<FilmDTO>("films?freeOnly=false");
    }

    void ChangePageType(string pageType) => Navigation = pageType;

    void CloseAlert() => Alert = "";

    async Task OnClick(ClickModel model)
    {
        if (model.PageType.Equals(PageType.Edit) || model.PageType.Equals(PageType.Delete))
            Film = await AdminService.SingleAsync<FilmDTO>($"courses/{model.Id}") ?? new();

        ChangePageType(model.PageType);
    }

    async Task OnChange(string alert)
    {
        try
        {
            Alert = alert;
            Model = await AdminService.GetAsync<FilmDTO>("films");
            ChangePageType(PageType.Index);
        }
        catch
        {
            Alert = "Couldn't create/edit/delete the film.";
        }
    }
}