using System.Security.Cryptography;
using System.Text;
using System.Text.Json;
using System.Xml.Linq;
using Microsoft.Windows.AppNotifications;

namespace XFEEDToolBox;

public partial class App
{
    private static async Task SendAnnouncementOnceAsync(string path)
    {
        path=Path.GetFullPath(path);uint notificationId=0;var inHistory=false;string? failure=null;var registered=false;
        try
        {
            using var document=JsonDocument.Parse(await File.ReadAllTextAsync(path));var source=document.RootElement;
            var title=source.GetProperty("title").GetString()??"游戏公告";
            var message=source.GetProperty("message").GetString()??throw new InvalidDataException("公告内容为空。");
            var detail=source.TryGetProperty("detail",out var extra)?extra.GetString()??"":"";
            if(string.IsNullOrWhiteSpace(message)||title.Length>100||message.Length>8000||detail.Length>1000)throw new InvalidDataException("公告内容长度无效。");
            if(!AppNotificationManager.IsSupported())throw new PlatformNotSupportedException("当前 Windows 通知接口不可用。");
            var content=new XElement("toast",new XAttribute("launch","action=announcement&page=home"),
                new XElement("visual",new XElement("binding",new XAttribute("template","ToastGeneric"),
                    new XElement("text",title),new XElement("text",message),new XElement("text",detail))),
                new XElement("audio",new XAttribute("src","ms-winsoundevent:Notification.Default")));
            var manager=AppNotificationManager.Default;
            manager.Register("XFE ED 工具箱",new Uri(Path.Combine(AppContext.BaseDirectory,"Assets","icon.png")));registered=true;
            var tag=Convert.ToHexStringLower(SHA256.HashData(Encoding.UTF8.GetBytes(title+message+detail)))[..16];
            var notification=new AppNotification(content.ToString(SaveOptions.DisableFormatting))
                {Tag=tag,Group="game-announcements",Expiration=DateTimeOffset.UtcNow.AddHours(2)};
            manager.Show(notification);notificationId=notification.Id;
            inHistory=(await manager.GetAllAsync()).Any(n=>n.Id==notificationId&&notificationId>0);
            if(!inHistory)throw new IOException("尚未确认 Windows 接收公告通知。");
            Runtime.Log("游戏公告",message+" "+detail);
        }
        catch(Exception error){failure=error.ToString();}
        finally
        {
            await File.WriteAllTextAsync(path+".result.json",JsonSerializer.Serialize(new{at=DateTimeOffset.UtcNow,application="XFE ED 工具箱",notificationId,inHistory,failure},new JsonSerializerOptions{WriteIndented=true}));
            if(registered)AppNotificationManager.Default.Unregister();
            MainWindow.Close();
        }
    }
}