using Elwig.Services;
using Elwig.Windows;
using System;
using System.Threading.Tasks;

namespace Elwig.Helpers.Printing {
    public static class Pdf {

        public static Task Init(Action? evtHandler = null) {
            PdfiumNative.FPDF_InitLibrary();
            evtHandler?.Invoke();
            return Task.CompletedTask;
        }

        public static Task Cleanup() {
            PdfiumNative.FPDF_DestroyLibrary();
            return Task.CompletedTask;
        }

        public static void Show(TempFile file, string title) {
            App.MainDispatcher.BeginInvoke(() => {
                var w = new DocumentViewerWindow(title, file);
                w.Show();
            });
        }

        public static void Show(string path, string title) {
            App.MainDispatcher.BeginInvoke(() => {
                var w = new DocumentViewerWindow(title, path);
                w.Show();
            });
        }

        public static Task Print(string path, int copies = 1, bool doublePaged = false) {
            try {
                var printer = new PdfPrinter();
                printer.Print(path, copies, doublePaged);
            } catch (Exception exc) {
                InteractionService.ShowException("Fehler beim Drucken", "Beim Drucken ist ein Fehler aufgetreten", exc);
            }
            return Task.CompletedTask;
        }
    }
}