using Microsoft.Windows.AppNotifications;
using Microsoft.Windows.AppNotifications.Builder;
using WindowsGotify.Models;

namespace WindowsGotify.Services;

public sealed class NotificationService
{
    private readonly NotificationConfig _config;
    private readonly Logger _logger;

    public NotificationService(AppConfig config, Logger logger)
    {
        _config = config.Notification;
        _logger = logger;
    }

    public Task ShowAsync(GotifyMessage message)
    {
        if (!_config.Enabled)
            return Task.CompletedTask;

        try
        {
            var title = string.IsNullOrWhiteSpace(message.Title)
                ? "Gotify"
                : message.Title.Trim();

            var body = message.Message ?? string.Empty;
            if (body.Length > _config.MaxMessageLength)
            {
                body = body[..Math.Max(0, _config.MaxMessageLength)] + "…";
            }

            var builder = new AppNotificationBuilder()
                .AddText(title)
                .AddText(body);

            if (_config.Sound)
            {
                builder.SetAudioEvent(
                    message.Priority >= 8
                        ? AppNotificationSoundEvent.Alarm
                        : AppNotificationSoundEvent.Default);
            }

            // 把 extras 里的 client::notification.click.url 透传给通知,让 App.OnNotificationInvoked 收到
            // Windows App SDK 2.4.0 的 AddArgument 是 (key, value) 两参,跟 1.x 的单参 "key=value" 不一样
            var clickUrl = message.ClickUrl;
            if (!string.IsNullOrWhiteSpace(clickUrl))
            {
                builder.AddArgument("url", clickUrl);
            }

            var notification = builder.BuildNotification();
            AppNotificationManager.Default.Show(notification);

            _logger.Info($"Notification shown. id={message.Id}, priority={message.Priority}, title={title}");
        }
        catch (Exception ex)
        {
            _logger.Error($"Notification display failed. id={message.Id}", ex);
        }

        return Task.CompletedTask;
    }
}