using System;
using Core;
using Minigames.Airplane.Data;
using UnityEngine;
using UnityEngine.UI;

namespace Minigames.Airplane.UI
{
    /// <summary>
    /// UI for selecting airplane type before game starts.
    /// Displays buttons for each available airplane type.
    /// </summary>
    public class AirplaneSelectionUI : MonoBehaviour
    {
        #region Inspector References
        
        [Header("UI References")]
        [SerializeField] private Button jetPlaneButton;
        [SerializeField] private Button bobbingPlaneButton;
        [SerializeField] private Button dropPlaneButton;
        [SerializeField] private Button confirmButton;
        
        [Header("Debug")]
        [SerializeField] private bool showDebugLogs;
        
        #endregion
        
        #region State
        
        private AirplaneAbilityType selectedType;
        private AirplaneSelectionButton selectedButtonComponent;
        private bool hasConfirmed;
        
        public bool HasSelectedType => hasConfirmed;
        
        #endregion
        
        #region Events
        
        public event Action<AirplaneAbilityType> OnTypeSelected;
        public event Action<AirplaneAbilityType> OnConfirmed;
        
        #endregion
        
        #region Lifecycle
        
        private void Awake()
        {
            // Setup button listeners
            if (jetPlaneButton != null)
                jetPlaneButton.onClick.AddListener(() => SelectType(AirplaneAbilityType.Jet, jetPlaneButton));
            
            if (bobbingPlaneButton != null)
                bobbingPlaneButton.onClick.AddListener(() => SelectType(AirplaneAbilityType.Bobbing, bobbingPlaneButton));
            
            if (dropPlaneButton != null)
                dropPlaneButton.onClick.AddListener(() => SelectType(AirplaneAbilityType.Drop, dropPlaneButton));
            
            if (confirmButton != null)
            {
                confirmButton.onClick.AddListener(ConfirmSelection);
                confirmButton.interactable = false; // Disabled until selection made
            }
            
            // Hide by default (deactivate container child, not root)
            if (transform.childCount > 0)
            {
                Transform container = transform.GetChild(0);
                container.gameObject.SetActive(false);
            }
        }
        
        #endregion
        
        #region Public API
        
        /// <summary>
        /// Show the selection UI.
        /// Activates the immediate child container.
        /// Script should be on Root, with UI elements under a Container child.
        /// </summary>
        public void Show()
        {
            selectedType = AirplaneAbilityType.None;
            selectedButtonComponent = null;
            hasConfirmed = false;
            
            if (confirmButton != null)
                confirmButton.interactable = false;
            
            // Reset all button highlights
            ResetButtonHighlights();
            
            // Populate icons from settings
            PopulateButtonIcons();
            
            // Activate the container (immediate child)
            if (transform.childCount > 0)
            {
                Transform container = transform.GetChild(0);
                container.gameObject.SetActive(true);
                
                if (showDebugLogs)
                {
                    Logging.Debug($"[AirplaneSelectionUI] Shown. Activated container: {container.name}");
                }
            }
            else
            {
                Logging.Error("[AirplaneSelectionUI] No child container found! Expected structure: Root(script)->Container->UI Elements");
            }
        }
        
        /// <summary>
        /// Hide the selection UI.
        /// Deactivates the immediate child container.
        /// </summary>
        public void Hide()
        {
            // Deactivate the container (immediate child)
            if (transform.childCount > 0)
            {
                Transform container = transform.GetChild(0);
                container.gameObject.SetActive(false);
                
                if (showDebugLogs)
                {
                    Logging.Debug($"[AirplaneSelectionUI] Hidden. Deactivated container: {container.name}");
                }
            }
        }
        
        /// <summary>
        /// Get the selected airplane type.
        /// </summary>
        public AirplaneAbilityType GetSelectedType()
        {
            return selectedType;
        }
        
        #endregion
        
        #region Private Methods
        
        private void SelectType(AirplaneAbilityType type, Button button)
        {
            if (type == AirplaneAbilityType.None)
            {
                Logging.Warning("[AirplaneSelectionUI] Attempted to select None type!");
                return;
            }
            
            selectedType = type;
            
            // Get the AirplaneSelectionButton component (on same GameObject as Button)
            var buttonComponent = button.GetComponent<AirplaneSelectionButton>();
            if (buttonComponent == null)
            {
                Logging.Warning($"[AirplaneSelectionUI] Button {button.name} is missing AirplaneSelectionButton component!");
                return;
            }
            
            selectedButtonComponent = buttonComponent;
            
            // Update visual feedback
            ResetButtonHighlights();
            HighlightButton(buttonComponent);
            
            // Enable confirm button
            if (confirmButton != null)
                confirmButton.interactable = true;
            
            // Fire event
            OnTypeSelected?.Invoke(type);
            
            if (showDebugLogs)
            {
                Logging.Debug($"[AirplaneSelectionUI] Selected type: {type}");
            }
        }
        
        private void ConfirmSelection()
        {
            if (selectedType == AirplaneAbilityType.None)
            {
                Logging.Warning("[AirplaneSelectionUI] Cannot confirm - no type selected!");
                return;
            }
            
            hasConfirmed = true;
            
            // Fire event
            OnConfirmed?.Invoke(selectedType);
            
            // Hide UI
            Hide();
        }
        
        private void ResetButtonHighlights()
        {
            // End highlight on all buttons
            if (jetPlaneButton != null)
            {
                var component = jetPlaneButton.GetComponent<AirplaneSelectionButton>();
                if (component != null) component.HighlightEnd();
            }
            
            if (bobbingPlaneButton != null)
            {
                var component = bobbingPlaneButton.GetComponent<AirplaneSelectionButton>();
                if (component != null) component.HighlightEnd();
            }
            
            if (dropPlaneButton != null)
            {
                var component = dropPlaneButton.GetComponent<AirplaneSelectionButton>();
                if (component != null) component.HighlightEnd();
            }
        }
        
        private void HighlightButton(AirplaneSelectionButton buttonComponent)
        {
            if (buttonComponent != null)
            {
                buttonComponent.HighlightStart();
            }
        }
        
        /// <summary>
        /// Populate button icons from airplane settings.
        /// Assumes Image component is on the same GameObject as the Button.
        /// </summary>
        private void PopulateButtonIcons()
        {
            // Get airplane settings
            var settings = GameManager.GetSettingsObject<AppleHills.Core.Settings.IAirplaneSettings>();
            if (settings == null)
            {
                if (showDebugLogs)
                {
                    Logging.Warning("[AirplaneSelectionUI] Could not load airplane settings for icons");
                }
                return;
            }
            
            // Populate Jet button icon
            if (jetPlaneButton != null)
            {
                var jetConfig = settings.GetAirplaneConfig(AirplaneAbilityType.Jet);
                if (jetConfig != null && jetConfig.previewSprite != null)
                {
                    var image = jetPlaneButton.GetComponent<Image>();
                    if (image != null)
                    {
                        image.sprite = jetConfig.previewSprite;
                    }
                }
            }
            
            // Populate Bobbing button icon
            if (bobbingPlaneButton != null)
            {
                var bobbingConfig = settings.GetAirplaneConfig(AirplaneAbilityType.Bobbing);
                if (bobbingConfig != null && bobbingConfig.previewSprite != null)
                {
                    var image = bobbingPlaneButton.GetComponent<Image>();
                    if (image != null)
                    {
                        image.sprite = bobbingConfig.previewSprite;
                    }
                }
            }
            
            // Populate Drop button icon
            if (dropPlaneButton != null)
            {
                var dropConfig = settings.GetAirplaneConfig(AirplaneAbilityType.Drop);
                if (dropConfig != null && dropConfig.previewSprite != null)
                {
                    var image = dropPlaneButton.GetComponent<Image>();
                    if (image != null)
                    {
                        image.sprite = dropConfig.previewSprite;
                    }
                }
            }
            
            if (showDebugLogs)
            {
                Logging.Debug("[AirplaneSelectionUI] Populated airplane icons from settings");
            }
        }
        
        #endregion
    }
}