using CliWrap;
using CliWrap.Buffered;
using CoreAgent.Domain.Interfaces.System.Command;
using CoreAgent.Domain.Models;
using CoreAgent.Domain.Models.System;
using Microsoft.Extensions.Logging;

namespace CoreAgent.Infrastructure.Command.Base;

/// <summary>
/// 命令执行器基类
/// </summary>
public abstract class BaseCommandExecutor : ISystemCommandExecutor
{
    protected readonly ILogger _logger;
    protected abstract string DefaultShell { get; }

    protected BaseCommandExecutor(ILogger logger)
    {
        _logger = logger;
    }

    public abstract Task ExecuteCommandWithOutputAsync(string command, Action<string> outputHandler, CancellationTokenSource cancellationTokenSource);

    public abstract Task<CommandExecutionResult> ExecuteCommandAsync(string command, CancellationTokenSource cancellationTokenSource);

    protected async Task<CommandExecutionResult> ExecuteCommandInternalAsync(string command, string arguments, CancellationTokenSource cancellationTokenSource)
    {
        var startTime = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
        try
        {
            _logger.LogDebug("开始执行命令: {Command}", command);
            var cmd = Cli.Wrap(DefaultShell)
                .WithArguments(arguments)
                .WithValidation(CommandResultValidation.None);
            var result = await cmd.ExecuteBufferedAsync(cancellationTokenSource.Token);
            var executionTime = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds() - startTime;

            if (result.IsSuccess)
            {
                _logger.LogDebug("命令执行成功 - 输出: {Output}", result.StandardOutput);
                return CommandExecutionResult.Success(result.StandardOutput, executionTime);
            }
            else
            {
                _logger.LogDebug("命令执行失败 - 错误: {Error}", result.StandardError);
                return CommandExecutionResult.Failure(result.StandardError, executionTime);
            }
        }
        catch (Exception ex)
        {
            var executionTime = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds() - startTime;
            _logger.LogError(ex, "命令执行失败: {Command}", command);
            return CommandExecutionResult.Failure(ex.Message, executionTime);
        }
    }
}