#if UNITY_EDITOR || DEVELOPMENT_BUILD
using System.Collections;
using System.Collections.Generic;
using AibisDream.Framework;
using AibisDream.FixSystem;
using AibisDream.SaveSystem;
using UnityEngine;
using UnityEngine.SceneManagement;

namespace AibisDream
{
    public class PeipeiMemoryJumpTool : MonoBehaviour
    {
        private const string TargetSceneKey = "Scene/PeipeiFixScene";
        private const string TargetSceneName = "PeipeiFixScene";
        private const float WaitTimeout = 15f;
        private const float UiMargin = 16f;
        private const float DevButtonWidth = 96f;
        private const float DevButtonHeight = 34f;
        private const float CommandButtonWidth = 220f;
        private const float CommandButtonHeight = 34f;
        private const float StatusWidth = 360f;
        private const float StatusHeight = 28f;
        private const int DevCommandCount = 1;

        private static readonly PunchTape[] TestPunchTapes =
        {
            new("EyeView", "\u5929\u7a7a", "liuying1-3"),
            new("EyeView", "\u6d77\u62a5", "liuying1-1"),
            new("EyeView", "\u690d\u7269", "liuying1-2")
        };

        private static PeipeiMemoryJumpTool instance;

        private bool isJumping;
        private bool menuOpen;
        private string status = "";
        private float statusVisibleUntil;
        private GUIStyle buttonStyle;
        private GUIStyle menuBoxStyle;
        private GUIStyle statusStyle;

        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.AfterSceneLoad)]
        private static void Bootstrap()
        {
            if (instance != null)
                return;

            var existing = FindObjectOfType<PeipeiMemoryJumpTool>();
            if (existing != null)
            {
                instance = existing;
                DontDestroyOnLoad(existing.gameObject);
                return;
            }

            var toolObject = new GameObject("[Dev] Peipei Memory Jump Tool");
            DontDestroyOnLoad(toolObject);
            instance = toolObject.AddComponent<PeipeiMemoryJumpTool>();
        }

        private void OnGUI()
        {
            EnsureStyles();

            float buttonX = Screen.width - UiMargin - DevButtonWidth;
            float buttonY = Screen.height - UiMargin - DevButtonHeight;
            var devButtonRect = new Rect(buttonX, buttonY, DevButtonWidth, DevButtonHeight);

            if (menuOpen)
                DrawCommandMenu(devButtonRect);

            string label = isJumping ? "Busy..." : "Dev";
            if (GUI.Button(devButtonRect, label, buttonStyle))
                menuOpen = !menuOpen;

            if (!string.IsNullOrEmpty(status) && Time.unscaledTime < statusVisibleUntil)
            {
                float menuHeight = GetMenuHeight();
                float statusY = menuOpen
                    ? buttonY - menuHeight - StatusHeight - UiMargin
                    : buttonY - StatusHeight - 8f;
                var statusRect = new Rect(
                    Screen.width - UiMargin - StatusWidth,
                    Mathf.Max(UiMargin, statusY),
                    StatusWidth,
                    StatusHeight);
                GUI.Label(statusRect, status, statusStyle);
            }
        }

        private void DrawCommandMenu(Rect devButtonRect)
        {
            float menuHeight = GetMenuHeight();
            float menuX = Screen.width - UiMargin - CommandButtonWidth;
            float menuY = devButtonRect.y - menuHeight - 8f;
            var menuRect = new Rect(menuX, menuY, CommandButtonWidth, menuHeight);

            GUI.Box(menuRect, GUIContent.none, menuBoxStyle);

            var commandRect = new Rect(
                menuRect.x + 6f,
                menuRect.y + 6f,
                menuRect.width - 12f,
                CommandButtonHeight);
            DrawCommandButton(commandRect, "Jump: Peipei Memory", !isJumping, () => StartCoroutine(JumpToMemory()));
        }

        private static float GetMenuHeight()
        {
            return DevCommandCount * CommandButtonHeight + 12f;
        }

        private void DrawCommandButton(Rect rect, string label, bool enabled, System.Action action)
        {
            GUI.enabled = enabled;
            if (GUI.Button(rect, label, buttonStyle))
            {
                menuOpen = false;
                action?.Invoke();
            }
            GUI.enabled = true;
        }

        private IEnumerator JumpToMemory()
        {
            if (isJumping)
                yield break;

            isJumping = true;
            SetStatus("Preparing Peipei memory jump...");

            BeginGameLoopForJump();
            StopCurrentDialog();

            if (!IsPeipeiFixSceneLoaded())
            {
                if (SceneLoader.Instance == null)
                {
                    SetStatus("Jump failed: SceneLoader is not ready.", 5f);
                    isJumping = false;
                    yield break;
                }

                SetStatus("Loading Peipei fix scene...");
                yield return SceneLoader.Instance.LoadSceneAsync(TargetSceneKey);
            }

            yield return null;
            SetStatus("Waiting for fix systems...");
            bool ready = false;
            float deadline = Time.unscaledTime + WaitTimeout;
            while (Time.unscaledTime < deadline)
            {
                if (FixSystemCenter.Instance != null
                    && FixSystemCenter.Instance.IsDirectorReady
                    && FixSystemCenter.SystemDic.Get<MemoryProcess>() != null
                    && FixPanelSystem.GetRepairPanel<CablePanel>() != null)
                {
                    ready = true;
                    break;
                }

                yield return null;
            }

            if (!ready)
            {
                SetStatus("Jump failed: Peipei memory systems were not ready.", 5f);
                isJumping = false;
                yield break;
            }

            SeedTestPunchTapes();
            SetStatus("Entering memory module...");
            yield return FixSystemCenter.Instance.TransitionToImmediate(FixSceneMode.Memory);

            PunchTapeManager.Instance.OpenFavoritesPanel();
            SetStatus("Peipei memory module is ready.", 3f);
            isJumping = false;
        }

        private static bool IsPeipeiFixSceneLoaded()
        {
            if (SceneLoader.Instance != null && SceneLoader.Instance.CurrentSceneName == TargetSceneKey)
                return true;

            return SceneManager.GetSceneByName(TargetSceneName).isLoaded;
        }

        private static void BeginGameLoopForJump()
        {
            if (GameManager.Instance != null && GameManager.Instance.state.isInGame)
                return;

            EnumEventSystem.Global.Send(GameLoopEnum.GameStart);
        }

        private static void StopCurrentDialog()
        {
            if (DialogController.Instance != null && DialogController.Instance.DialogueRunner != null)
                DialogController.Instance.StopDialog();
            else if (DialogUIManager.Instance != null)
                DialogUIManager.Instance.HideDialog();
        }

        private static void SeedTestPunchTapes()
        {
            if (PunchTapeManager.Instance == null)
                return;

            var snapshot = new PunchTapeSnapshotDto
            {
                favorites = new List<PunchTape>(TestPunchTapes.Length)
            };

            foreach (var tape in TestPunchTapes)
                snapshot.favorites.Add(new PunchTape(tape.Category, tape.ClueName, tape.MemoryIndex));

            PunchTapeManager.Instance.ApplyPunchTapeSnapshot(snapshot);
        }

        private void SetStatus(string message, float visibleSeconds = 30f)
        {
            status = message;
            statusVisibleUntil = Time.unscaledTime + visibleSeconds;
            Debug.Log($"[PeipeiMemoryJumpTool] {message}");
        }

        private void EnsureStyles()
        {
            if (buttonStyle != null && statusStyle != null)
                return;

            buttonStyle = new GUIStyle(GUI.skin.button)
            {
                fontSize = 15,
                alignment = TextAnchor.MiddleCenter
            };

            menuBoxStyle = new GUIStyle(GUI.skin.box)
            {
                padding = new RectOffset(6, 6, 6, 6)
            };

            statusStyle = new GUIStyle(GUI.skin.box)
            {
                fontSize = 13,
                alignment = TextAnchor.MiddleLeft,
                padding = new RectOffset(8, 8, 4, 4)
            };
        }
    }
}
#endif