using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Runtime.InteropServices;
using Microsoft.Extensions.Logging;

namespace AyaNova.Util
{
    public static class RunProgram
    {


        public static string Run(string cmd, List<string> arguments, ILogger log = null)
        {
            try
            {
                if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
                {
                    return RunWindows(cmd, arguments);
                }
                else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
                {
                    return RunOSX(cmd, arguments);

                }
                else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
                {
                    return RunLinuxBash(cmd, arguments);
                }
            }
            catch (Exception ex)
            {
                if (log != null)
                {
                    log.LogError(ex, $"RunProgram error running command:{cmd} {arguments}");
                }
                throw ex;
            }




            throw new PlatformNotSupportedException();

        }



        private static string RunWindows(string cmd, List<string> arguments)
        {
            /*
            process.StartInfo.UseShellExecute = false;
process.StartInfo.RedirectStandardOutput = true;
process.OutputDataReceived += (sender, args) => Console.WriteLine("received output: {0}", args.Data);
process.Start();
process.BeginOutputReadLine();
            
            */
            // string result = string.Empty;
            // using (var process = new Process())
            // {
            //     process.StartInfo = new ProcessStartInfo
            //     {
            //         FileName = cmd,
            //         Arguments = arguments,
            //         RedirectStandardOutput = true,
            //         UseShellExecute = false,
            //         CreateNoWindow = true,
            //     };
            //     process.OutputDataReceived += (sender, args) => result += args.Data;
            //     process.Start();
            //     // string result = process.StandardOutput.ReadToEnd();
            //     // process.WaitForExit();
            //     return result;
            // }



            //this executes but doesnt return error
            using (var process = new Process())
            {
                process.StartInfo = new ProcessStartInfo
                {
                    FileName = cmd,
                    // Arguments = arguments,                    
                    RedirectStandardOutput = true,
                    RedirectStandardError = true,
                    UseShellExecute = false,
                    CreateNoWindow = true,
                };

                foreach (string s in arguments)
                    process.StartInfo.ArgumentList.Add(s);
                process.Start();

                string result = $"{process.StandardOutput.ReadToEnd()}{process.StandardError.ReadToEnd()} ";
                process.WaitForExit();
                return result;
            }
        }

        private static string RunLinuxBash(string cmd, List<string> arguments)
        {
            var escapedArgs = $"{cmd} {arguments}".Replace("\"", "\\\"");

            using (var process = new Process())
            {
                process.StartInfo = new ProcessStartInfo
                {
                    FileName = "/bin/bash",
                    //  Arguments = $"-c \"{escapedArgs}\"",
                    RedirectStandardOutput = true,
                    UseShellExecute = false,
                    CreateNoWindow = true,
                };
                foreach (string s in arguments)
                    process.StartInfo.ArgumentList.Add(s);

                process.Start();
                string result = process.StandardOutput.ReadToEnd();
                process.WaitForExit();
                return result;
            }
        }


        private static string RunOSX(string cmd, List<string> arguments)
        {
            using (var process = new Process())
            {
                process.StartInfo = new ProcessStartInfo
                {
                    FileName = cmd,

                    //  Arguments = arguments,
                    RedirectStandardOutput = true,
                    UseShellExecute = false,
                    CreateNoWindow = true,
                };
                foreach (string s in arguments)
                    process.StartInfo.ArgumentList.Add(s);

                process.Start();
                string result = process.StandardOutput.ReadToEnd();
                process.WaitForExit();
                return result;
            }
        }

    }
}