using AibisDream.Framework;
using AibisDream.Kit;
using AibisDream.UI;
using TMPro;
using UnityEngine;

namespace AibisDream
{
    public class DialogUIManager : Singleton<DialogUIManager>
    {
        [SerializeField] private LineRunner lineView;
        [SerializeField] private OptionView optionView;
        [SerializeField] private TMP_Text widthEstimation;

        private CanvasGroup _canvasGroup;

        public override void OnSingletonInit()
        {
            _canvasGroup = GetComponent<CanvasGroup>();
            if (_canvasGroup == null)
            {
                _canvasGroup = gameObject.AddComponent<CanvasGroup>();
            }

            EnumEventSystem.Global.Register<DialogEventEnum, LineInfo>(DialogEventEnum.LineStart, AddDialogueLine);
            EnumEventSystem.Global.Register<DialogEventEnum, LineInfo>(DialogEventEnum.LineHistoryAppend, AddDialogueLine);
            EnumEventSystem.Global.Register<DialogEventEnum, LineInfo>(DialogEventEnum.OptionSelected, AddDialogueLine);
            EnumEventSystem.Global.Register(EventEnum.NextYarn, CleanDialogHistory);
            EnumEventSystem.Global.Register(GameLifecycleEvent.SessionEnded, CleanDialogHistory);
            EnumEventSystem.Global.Register(GameLifecycleEvent.SessionPaused, CloseCanvas);
            EnumEventSystem.Global.Register(GameLifecycleEvent.SessionResumed, OpenCanvas);
        }

        public override void OnSingletonDestroy()
        {
            EnumEventSystem.Global.UnRegister<DialogEventEnum, LineInfo>(DialogEventEnum.LineStart, AddDialogueLine);
            EnumEventSystem.Global.UnRegister<DialogEventEnum, LineInfo>(DialogEventEnum.LineHistoryAppend, AddDialogueLine);
            EnumEventSystem.Global.UnRegister<DialogEventEnum, LineInfo>(DialogEventEnum.OptionSelected, AddDialogueLine);
            EnumEventSystem.Global.UnRegister(EventEnum.NextYarn, CleanDialogHistory);
            EnumEventSystem.Global.UnRegister(GameLifecycleEvent.SessionEnded, CleanDialogHistory);
            EnumEventSystem.Global.UnRegister(GameLifecycleEvent.SessionPaused, CloseCanvas);
            EnumEventSystem.Global.UnRegister(GameLifecycleEvent.SessionResumed, OpenCanvas);
        }

        private void AddDialogueLine(LineInfo line)
        {
            if (line.character.dialogViewType == DialogViewType.Task)
            {
                return;
            }

            var panel = UIManager.Instance.GetPanel<InGameTerminalPanel>();
            panel?.AppendDialogLine(line);
        }

        private void CleanDialogHistory()
        {
            var panel = UIManager.Instance.GetPanel<InGameTerminalPanel>();
            panel?.ClearDialog();
        }

        public void CloseCanvas()
        {
            gameObject.SetActive(false);
        }

        public void OpenCanvas()
        {
            gameObject.SetActive(true);
        }

        /// <summary>
        /// 仅隐藏对话视觉，不影响打字机、推进与选项交互。
        /// </summary>
        public void SetDialogVisualVisible(bool visible)
        {
            if (_canvasGroup == null)
            {
                _canvasGroup = GetComponent<CanvasGroup>();
            }

            _canvasGroup.alpha = visible ? 1f : 0f;
        }

        public void HideDialog()
        {
            lineView.HideDialog();
            optionView.HideDialog();
        }

        public void RegisterScreenView(DialogViewType dialogViewType, ILineView screenView)
        {
            lineView.RegisterView(dialogViewType, screenView);
        }

        public void UnRegisterScreenView(DialogViewType dialogViewType)
        {
            lineView.UnRegisterView(dialogViewType);
        }

        public void LoadBubbles(BubbleSlotGroupData data)
        {
            lineView.LoadBubbleData(data);
            optionView.LoadBubbles(data);
        }

        public float EstimateTextWidth(string text, float fontSize)
        {
            widthEstimation.fontSize = fontSize;
            widthEstimation.text = text;
            widthEstimation.ForceMeshUpdate();
            return widthEstimation.preferredWidth;
        }
    }

    public enum DialogViewType
    {
        Default,
        StandardBubble,
        OnelineBox,
        Screen,
        CenterText,
        CenterOption,
        Task,
        Log
    }
}