using System;
using AibisDream.Utility;
using TMPro;
using UnityEngine;
using UnityEngine.Localization.Components;
using UnityEngine.UI;

namespace AibisDream.UI
{
    [RequireComponent(typeof(BaseButton))]
    public class TerminalMenuItemView : MonoBehaviour
    {
        [SerializeField] private TMP_Text labelText;
        [SerializeField] private LocalizeStringEvent labelLocalize;
        [SerializeField] private TMP_Text statusText;
        [SerializeField] private TMP_Text detailText;
        [SerializeField] private TMP_Text cursor;
        [SerializeField] private Image selectionBar;
        [SerializeField] private string defaultLabelKey = string.Empty;
        [SerializeField] private Color normalTextColor = Color.white;
        [SerializeField] private Color selectedTextColor = new Color(0.02f, 0.02f, 0.04f);
        [SerializeField] private Color dangerTextColor = new Color(1f, 0.18f, 0.2f);
        [SerializeField] private float disabledAlpha = 0.35f;

        private BaseButton _button;
        private CanvasGroup _canvasGroup;
        private bool _isDanger;
        private bool _isSelected;
        private SelectionType _prevSelectionState = SelectionType.Normal;

        public event Action<TerminalMenuItemView> Clicked;
        public event Action<TerminalMenuItemView> Hovered;

        private void Awake()
        {
            _button = GetComponent<BaseButton>();
            _canvasGroup = GetComponent<CanvasGroup>();
            if (_canvasGroup == null)
            {
                _canvasGroup = gameObject.AddComponent<CanvasGroup>();
            }

            if (labelLocalize == null && labelText != null)
            {
                labelLocalize = labelText.GetComponent<LocalizeStringEvent>();
            }

            _button.onClick.AddListener(HandleClick);
            _button.onStateTransition.AddListener(OnButtonStateTransition);
            SetSelected(false);

            if (!string.IsNullOrEmpty(defaultLabelKey))
            {
                SetLabel(defaultLabelKey);
            }
        }

        private void OnDestroy()
        {
            if (_button != null)
            {
                _button.onClick.RemoveListener(HandleClick);
                _button.onStateTransition.RemoveListener(OnButtonStateTransition);
            }
        }

        public void SetContent(string label, string status = "", string detail = "")
        {
            SetLabel(label);

            if (statusText != null)
            {
                statusText.text = status;
            }

            if (detailText != null)
            {
                detailText.text = detail;
            }

            RefreshVisual();
        }

        public void SetLabel(string value)
        {
            if (labelLocalize != null && IsLocalizationKey(value))
            {
                labelLocalize.enabled = true;
                labelLocalize.SetTable(ConstRef.UITextTable);
                labelLocalize.SetEntry(value);
                return;
            }

            if (labelLocalize != null)
            {
                labelLocalize.enabled = false;
            }

            if (labelText != null)
            {
                labelText.text = value;
            }
        }

        public void SetInteractable(bool interactable)
        {
            if (_button != null)
            {
                _button.interactable = interactable;
            }

            if (_canvasGroup != null)
            {
                _canvasGroup.alpha = interactable ? 1f : disabledAlpha;
            }
        }

        public void SetSelected(bool selected)
        {
            _isSelected = selected;
            RefreshVisual();
        }

        private void HandleClick()
        {
            if (_button != null && _button.interactable)
            {
                TerminalUIAudio.NotifyClick();
            }

            Clicked?.Invoke(this);
        }

        private void OnButtonStateTransition(SelectionType state, bool instant)
        {
            if (_button.interactable
                && state == SelectionType.Highlighted
                && _prevSelectionState == SelectionType.Normal)
            {
                TerminalUIAudio.NotifyHover();
            }

            _prevSelectionState = state;

            if (state is SelectionType.Highlighted or SelectionType.Selected or SelectionType.Pressed)
            {
                Hovered?.Invoke(this);
            }

            RefreshVisual();
        }

        private void RefreshVisual()
        {
            if (cursor != null)
            {
                cursor.gameObject.SetActive(_isSelected);
            }

            if (selectionBar != null)
            {
                selectionBar.gameObject.SetActive(_isSelected);
            }

            var color = _isDanger ? dangerTextColor : normalTextColor;
            if (_isSelected && !_isDanger)
            {
                color = selectedTextColor;
            }

            SetColor(labelText, color);
            SetColor(statusText, color);
            SetColor(detailText, color);
            SetColor(cursor, color);
        }

        private static void SetColor(TMP_Text text, Color color)
        {
            if (text != null)
            {
                text.color = color;
            }
        }

        private static bool IsLocalizationKey(string value)
        {
            return !string.IsNullOrEmpty(value) && value.Contains("_", StringComparison.Ordinal);
        }
    }
}