using UnityEngine;
using UnityEditor;
using System.Diagnostics;
using System.IO;

public class ReadmeUpdater : EditorWindow
{
    private const string PythonScriptPath = "BABA_YAGA_Updater/main.py";
    private const string VenvPythonPath = "BABA_YAGA_Updater/.venv/Scripts/python.exe";
    private const string UpdaterDir = "BABA_YAGA_Updater";

    [MenuItem("BABA YAGA/Update README")]
    public static void UpdateReadme()
    {
        string projectRoot = Directory.GetParent(Application.dataPath).FullName;
        string fullVenvPath = Path.Combine(projectRoot, VenvPythonPath);
        string fullScriptPath = Path.Combine(projectRoot, PythonScriptPath);
        string workingDir = Path.Combine(projectRoot, UpdaterDir);

        if (!File.Exists(fullVenvPath))
        {
            UnityEngine.Debug.LogError($"[README Updater] Python venv not found at: {fullVenvPath}. Please ensure the .venv is set up in BABA_YAGA_Updater.");
            return;
        }

        UnityEngine.Debug.Log("[README Updater] Starting update process...");

        ProcessStartInfo startInfo = new ProcessStartInfo
        {
            FileName = fullVenvPath,
            Arguments = $"\"{fullScriptPath}\"",
            WorkingDirectory = workingDir,
            UseShellExecute = false,
            RedirectStandardOutput = true,
            RedirectStandardError = true,
            StandardOutputEncoding = System.Text.Encoding.UTF8,
            StandardErrorEncoding = System.Text.Encoding.UTF8,
            CreateNoWindow = true
        };

        // Force Python to use UTF-8 for IO to handle emojis
        startInfo.EnvironmentVariables["PYTHONIOENCODING"] = "utf-8";

        using (Process process = Process.Start(startInfo))
        {
            using (StreamReader reader = process.StandardOutput)
            {
                string result = reader.ReadToEnd();
                if (!string.IsNullOrEmpty(result))
                    UnityEngine.Debug.Log($"[README Updater] Output:\n{result}");
            }

            using (StreamReader reader = process.StandardError)
            {
                string errors = reader.ReadToEnd();
                if (!string.IsNullOrEmpty(errors))
                    UnityEngine.Debug.LogError($"[README Updater] Errors:\n{errors}");
            }

            process.WaitForExit();
            if (process.ExitCode == 0)
            {
                UnityEngine.Debug.Log("🎉 [README Updater] README.md successfully updated!");
            }
            else
            {
                UnityEngine.Debug.LogError($"[README Updater] Process exited with code {process.ExitCode}");
            }
        }
    }
}