using UnityEditor;
using UnityEngine;
using LLM.Editor.Core;
using LLM.Editor.Client;
using System.Threading.Tasks;

namespace LLM.Editor.GUI
{
    public class MCPWindow : EditorWindow
    {
        private string _promptText = "Create a script named Rotate with a public float for speed. Then, find the 'Racer' model, make a prefab from it, attach the script, and add it to the scene.";
        private Vector2 _scrollPos;
        private bool _isRequestInProgress;

        [MenuItem("Tools/LLM/MCP Assistant")]
        public static void ShowWindow()
        {
            GetWindow<MCPWindow>("MCP Assistant");
        }

        [MenuItem("Tools/LLM/Print Persistent Data Path")]
        public static void PrintPersistantPath()
        {
            Debug.Log(Application.persistentDataPath);
        }
        
        [MenuItem("Tools/LLM/Print Instance ID (Selected Object)")]
        public static void PrintInstanceId()
        {
            var selection = Selection.activeObject;
            if (selection != null)
            {
                Debug.Log(selection.GetInstanceID());
            }
        }

        [MenuItem("Tools/LLM/Log object with instance ID")]
        public static void PrintObjectWithInstanceId()
        {
            var obj = EditorUtility.InstanceIDToObject(20404);
            Debug.Log(obj, obj);
        }

        private void OnEnable()
        {
            // Subscribe to updates from the executor so the window can repaint
            CommandExecutor.OnQueueUpdated += Repaint;
        }

        private void OnDisable()
        {
            CommandExecutor.OnQueueUpdated -= Repaint;
        }

        private void OnGUI()
        {
            EditorGUILayout.LabelField("LLM Co-Pilot", EditorStyles.boldLabel);
            
            EditorGUILayout.BeginHorizontal();
            if (SessionManager.HasActiveSession())
            {
                EditorGUILayout.LabelField($"Session: {SessionManager.GetCurrentSessionId()}");
                if (GUILayout.Button("End Session"))
                {
                    SessionManager.EndSession();
                }
            }
            else
            {
                if (GUILayout.Button("Start New Session"))
                {
                    SessionManager.StartNewSession();
                }
            }
            EditorGUILayout.EndHorizontal();
            EditorGUILayout.Space();

            UnityEngine.GUI.enabled = SessionManager.HasActiveSession() && !_isRequestInProgress;

            EditorGUILayout.LabelField("Enter your request:");
            _promptText = EditorGUILayout.TextArea(_promptText, GUILayout.Height(60));

            if (GUILayout.Button(_isRequestInProgress ? "Waiting for response..." : "Send"))
            {
                // Fire off the async task
                _ = SendPromptAsync();
            }
            EditorGUILayout.Space();
            
            UnityEngine.GUI.enabled = !_isRequestInProgress;
            EditorGUILayout.LabelField("Pending Commands", EditorStyles.boldLabel);
            _scrollPos = EditorGUILayout.BeginScrollView(_scrollPos, EditorStyles.helpBox);
            
            if (CommandExecutor.HasPendingCommands())
            {
                var nextCommand = CommandExecutor.GetNextCommand();
                EditorGUILayout.LabelField("Next Up: " + nextCommand.commandName);

                if (GUILayout.Button("Execute Next Command"))
                {
                    CommandExecutor.ExecuteNextCommand();
                }
            }
            else
            {
                EditorGUILayout.LabelField("No pending commands.");
            }

            EditorGUILayout.EndScrollView();
            UnityEngine.GUI.enabled = true;
        }
        
        private async Task SendPromptAsync()
        {
            _isRequestInProgress = true;
            Repaint();
            
            await GeminiApiClient.SendPrompt(_promptText);

            _isRequestInProgress = false;
            Repaint();
        }
    }
}