using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
namespace DepthsOfGreed.HandbookUI
{
    public sealed class BuildMenuController : MonoBehaviour
    {
        [SerializeField] private Button[] categoryButtons;
        [SerializeField] private TowerCardView[] cardSlots;
        public TestPlacementController Placement { get; set; }
        private readonly List<HandbookTowerEntry>[] groups = { new List<HandbookTowerEntry>(), new List<HandbookTowerEntry>(), new List<HandbookTowerEntry>(), new List<HandbookTowerEntry>() };
        private int selected = -1;
        private TowerCardView revealed;
        public int SelectedCategory => selected;
        public void Initialize(HandbookTowerCatalog catalog)
        {
            foreach (var card in cardSlots) card.Initialize(this);
            foreach (var group in groups) group.Clear();
            if (catalog.towers != null) foreach (var entry in catalog.towers) if (entry) groups[(int)entry.menuGroup].Add(entry);
            for (int i = 0; i < categoryButtons.Length; i++) { int n = i; categoryButtons[i].onClick.AddListener(() => SelectCategory(n)); }
            SelectCategory(0);
        }
        public void SelectCategory(int index)
        {
            if (index < 0 || index >= groups.Length || index == selected) return;
            selected = index; ResetCards(); Bind();
            for (int i = 0; i < categoryButtons.Length; i++)
            {
                categoryButtons[i].image.color = Color.white; var colors = categoryButtons[i].colors;
                colors.normalColor = i == index ? new Color(1, 0.76f, 0.35f) : new Color(0.87f, 0.84f, 0.75f);
                colors.highlightedColor = i == index ? new Color(1, 0.86f, 0.55f) : new Color(0.97f, 0.94f, 0.85f);
                colors.selectedColor = colors.normalColor; categoryButtons[i].colors = colors;
            }
        }
        private void Bind()
        {
            if (groups[selected].Count > cardSlots.Length) Debug.LogError("Handbuch: Mehr Einträge als vorbereitete Baukarten; weitere Slots im Inspector ergänzen.", this);
            for (int i = 0; i < cardSlots.Length; i++) { bool visible = i < groups[selected].Count; cardSlots[i].gameObject.SetActive(visible); if (visible) cardSlots[i].Bind(groups[selected][i]); }
        }
        public void ToggleCard(TowerCardView card)
        {
            if (revealed == card) { card.SetBack(false); revealed = null; return; }
            if (revealed) revealed.SetBack(false); revealed = card; card.SetBack(true);
        }
        public void ResetCards() { revealed = null; foreach (var card in cardSlots) card.SetBack(false, true); }
        public void ResetForClose() { ResetCards(); selected = -1; SelectCategory(0); }
    }
}