using CoreAgent.Domain.Interfaces;
using CoreAgent.Domain.Models;
using Microsoft.Extensions.Logging;
using System.Diagnostics;

namespace CoreAgent.Infrastructure.Services;

/// <summary>
/// 蜂窝网络服务实现
/// </summary>
public class CellularNetworkService : ICellularNetworkService
{
    private readonly ILogger<CellularNetworkService> _logger;

    public CellularNetworkService(ILogger<CellularNetworkService> logger)
    {
        _logger = logger;
    }

    public async Task<bool> StartAsync(string interfaceName, CellularNetworkConfig config)
    {
        try
        {
            _logger.LogInformation("正在启动蜂窝网络接口: {InterfaceName}", interfaceName);

            // 启用网络接口
            var enableCommand = $"netsh interface set interface \"{interfaceName}\" admin=ENABLED";
            await ExecuteCommandAsync(enableCommand);

            // 配置网络接口
            var configCommand = $"netsh interface cellular set profile name=\"{config.Apn}\" interface=\"{interfaceName}\"";
            await ExecuteCommandAsync(configCommand);

            _logger.LogInformation("蜂窝网络接口启动成功: {InterfaceName}", interfaceName);
            return true;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "启动蜂窝网络接口失败: {InterfaceName}", interfaceName);
            return false;
        }
    }

    public async Task<bool> StopAsync(string interfaceName)
    {
        try
        {
            _logger.LogInformation("正在停止蜂窝网络接口: {InterfaceName}", interfaceName);

            var command = $"netsh interface set interface \"{interfaceName}\" admin=DISABLED";
            await ExecuteCommandAsync(command);

            _logger.LogInformation("蜂窝网络接口停止成功: {InterfaceName}", interfaceName);
            return true;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "停止蜂窝网络接口失败: {InterfaceName}", interfaceName);
            return false;
        }
    }

    public async Task<CellularNetworkStatus> GetStatusAsync(string interfaceName)
    {
        try
        {
            _logger.LogInformation("正在获取蜂窝网络接口状态: {InterfaceName}", interfaceName);

            // 获取接口状态
            var statusCommand = $"netsh interface show interface \"{interfaceName}\"";
            var statusResult = await ExecuteCommandAsync(statusCommand);

            // 获取信号强度
            var signalCommand = $"netsh interface cellular show interfaces \"{interfaceName}\"";
            var signalResult = await ExecuteCommandAsync(signalCommand);

            var status = new CellularNetworkStatus
            {
                IsEnabled = statusResult.Contains("已启用", StringComparison.OrdinalIgnoreCase),
                ConnectionState = ParseConnectionState(statusResult),
                SignalStrength = ParseSignalStrength(signalResult),
                CarrierName = ParseCarrierName(signalResult)
            };

            _logger.LogInformation("获取蜂窝网络接口状态成功: {InterfaceName}", interfaceName);
            return status;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "获取蜂窝网络接口状态失败: {InterfaceName}", interfaceName);
            throw;
        }
    }

    private async Task<string> ExecuteCommandAsync(string command)
    {
        var process = new Process
        {
            StartInfo = new ProcessStartInfo
            {
                FileName = "cmd.exe",
                Arguments = $"/c {command}",
                RedirectStandardOutput = true,
                RedirectStandardError = true,
                UseShellExecute = false,
                CreateNoWindow = true
            }
        };

        process.Start();
        var output = await process.StandardOutput.ReadToEndAsync();
        var error = await process.StandardError.ReadToEndAsync();
        await process.WaitForExitAsync();

        if (process.ExitCode != 0)
        {
            throw new Exception($"命令执行失败: {error}");
        }

        return output;
    }

    private string ParseConnectionState(string statusResult)
    {
        if (statusResult.Contains("已连接", StringComparison.OrdinalIgnoreCase))
            return "已连接";
        if (statusResult.Contains("已断开", StringComparison.OrdinalIgnoreCase))
            return "已断开";
        return "未知";
    }

    private int ParseSignalStrength(string signalResult)
    {
        // 这里需要根据实际输出格式进行解析
        // 示例实现，实际使用时需要根据具体输出格式调整
        if (signalResult.Contains("信号强度: 强", StringComparison.OrdinalIgnoreCase))
            return 4;
        if (signalResult.Contains("信号强度: 中", StringComparison.OrdinalIgnoreCase))
            return 3;
        if (signalResult.Contains("信号强度: 弱", StringComparison.OrdinalIgnoreCase))
            return 2;
        return 1;
    }

    private string ParseCarrierName(string signalResult)
    {
        // 这里需要根据实际输出格式进行解析
        // 示例实现，实际使用时需要根据具体输出格式调整
        var carrierLine = signalResult.Split('\n')
            .FirstOrDefault(line => line.Contains("运营商:", StringComparison.OrdinalIgnoreCase));
        
        return carrierLine?.Split(':').LastOrDefault()?.Trim() ?? "未知";
    }
}