Wino-Mail/Wino.Mail/Activation/ProtocolActivationHandler.cs

using System;
using System.Threading.Tasks;
using CommunityToolkit.Mvvm.Messaging;
using Windows.ApplicationModel.Activation;
using Wino.Core.Domain.Interfaces;
using Wino.Core.Domain.Models.Launch;
using Wino.Messaging.Client.Shell;

namespace Wino.Activation;

internal class ProtocolActivationHandler : ActivationHandler<ProtocolActivatedEventArgs>
{
    private const string MailtoProtocolTag = "mailto:";

    private readonly INativeAppService _nativeAppService;
    private readonly ILaunchProtocolService _launchProtocolService;

    public ProtocolActivationHandler(INativeAppService nativeAppService, ILaunchProtocolService launchProtocolService)
    {
        _nativeAppService = nativeAppService;
        _launchProtocolService = launchProtocolService;
    }

    protected override Task HandleInternalAsync(ProtocolActivatedEventArgs args)
    {
        // Check URI prefix.
        var protocolString = args.Uri.AbsoluteUri;

        if (protocolString.StartsWith(MailtoProtocolTag))
        {
            // mailto activation. Try to parse params.
            _launchProtocolService.MailToUri = new MailToUri(protocolString);

            if (_nativeAppService.IsAppRunning())
            {
                // Just send publish a message. Shell will continue.
                WeakReferenceMessenger.Default.Send(new MailtoProtocolMessageRequested());
            }
        }

        return Task.CompletedTask;
    }

    protected override bool CanHandleInternal(ProtocolActivatedEventArgs args)
    {
        // Validate the URI scheme.

        try
        {
            var uriGet = args.Uri;
        }
        catch (UriFormatException)
        {
            return false;
        }

        return base.CanHandleInternal(args);
    }
}