using DbusSmsForward.Services;
using DbusSmsForward.SettingModel;
using DbusSmsForward.SMSModel;
using System.Diagnostics;

namespace DbusSmsForward.Notifications;

public sealed class ShellNotificationSender(DbusSmsForwardOptions options) : NotificationSenderBase("shell")
{
    private readonly ShellConfig _config = options.Notifications.Shell;

    public override bool IsEnabled => _config.Enabled && !string.IsNullOrWhiteSpace(_config.ShellPath);

    public override async Task SendAsync(SmsContentModel sms, string body, string deviceName, CancellationToken cancellationToken)
    {
        ProcessStartInfo startInfo = new()
        {
            FileName = _config.ShellPath,
            UseShellExecute = false,
            CreateNoWindow = true,
            RedirectStandardOutput = true,
            RedirectStandardError = true
        };

        foreach (string arg in new[]
        {
            sms.TelNumber,
            sms.SmsDate,
            sms.SmsContent,
            string.Empty,
            string.Empty,
            deviceName
        })
        {
            startInfo.ArgumentList.Add(arg ?? string.Empty);
        }

        using Process process = Process.Start(startInfo) ?? throw new InvalidOperationException("Unable to start shell process.");
        using CancellationTokenRegistration registration = cancellationToken.Register(() =>
        {
            try { if (!process.HasExited) process.Kill(true); } catch { }
        });

        await process.WaitForExitAsync(cancellationToken);
        if (process.ExitCode != 0)
        {
            string error = await process.StandardError.ReadToEndAsync(cancellationToken);
            throw new InvalidOperationException($"Shell sender exited with code {process.ExitCode}: {error}");
        }
    }
}