using System;
using System.Collections.Generic;
using Fruitomation.Game.Items;
using Fruitomation.Game;
using Fruitomation.Global;
using UnityEngine.UI;
using UnityEngine;

namespace Fruitomation.UI
{
    public class UpgradeInfoBoard : MonoBehaviour
    {
        [SerializeField] private GameObject BoardGO;
        [SerializeField] private Button[] ExitButtons;
        [SerializeField] private BuildingRegistry Registry;
        [SerializeField] private GameObject InputParent;
        [SerializeField] private GameObject OutputParent;
        [SerializeField] private GameObject BuildingDisplay;
        [SerializeField] private GameObject LeftArrow;
        [SerializeField] private GameObject SpawnerText;
        [SerializeField] private Button UnlockButton;
        [SerializeField] private GameObject UnlockedText;
        [SerializeField] private GameObject PoorPeopleText;

        private readonly Dictionary<AutomationBuildingType, GameObject> BuildingRegistry = new();
        private readonly List<GameObject> ChildrenToKill = new();

        private BasicUpgrade CurrentUpgrade;
        private double CurrentCost;
        
        private void Start()
        {
            BoardGO.SetActive(false);
            foreach (Button b in ExitButtons)
            {
                b.onClick.AddListener(Disable);
            }

            foreach (BuildingRegistry.BuildingInfo info in Registry.GetBuildings())
            {
                if (info.Type != AutomationBuildingType.None)
                {
                    BuildingRegistry.Add(info.Type, info.Prefab);
                }
            }
            
            UnlockButton.onClick.AddListener(() =>
            {
                MoneyController.CanBuy(CurrentCost);
                UpgradeManager.Unlock(CurrentUpgrade);
            });
        }

        public void Enable
        (
            BasicUpgrade upgrade,
            ItemType[] inputs,
            ItemType[] outputs,
            AutomationBuildingType building,
            double cost
        )
        // Wow, those function params are horrible
        {
            CurrentUpgrade = upgrade;
            CurrentCost = cost;
            
            BoardGO.SetActive(true);
            
            foreach (ItemType input in inputs)
            {
                ItemInfo info = ItemInfoRegistry.Get(input);
                GameObject go = Instantiate(info.Prefab, InputParent.transform);
                ChildrenToKill.Add(go);
            }

            foreach (ItemType output in outputs)
            {
                ItemInfo info = ItemInfoRegistry.Get(output);
                GameObject go = Instantiate(info.Prefab, OutputParent.transform);
                ChildrenToKill.Add(go);
            }

            if (building != AutomationBuildingType.Spawner)
            {
                BuildingDisplay.SetActive(true);
                LeftArrow.SetActive(true);
                SpawnerText.SetActive(false);
                
                Sprite sprite = BuildingRegistry[building].GetComponent<Building>().Sprite;
                BuildingDisplay.GetComponent<Image>().sprite = sprite;

                if (building == AutomationBuildingType.HeatExchanger)
                {
                    RectTransform rt = BuildingDisplay.GetComponent<RectTransform>();
                    rt.sizeDelta = new Vector2(125f, 250f);
                }

                else
                {
                    RectTransform rt = BuildingDisplay.GetComponent<RectTransform>();
                    rt.sizeDelta = new Vector2(250f, 250f);
                }
            }

            else
            {
                BuildingDisplay.SetActive(false);
                LeftArrow.SetActive(false);
                SpawnerText.SetActive(true);
            }
        }

        private void Update()
        {
            if (UpgradeManager.Is(CurrentUpgrade))
            {
                UnlockedText.SetActive(true);
                
                UnlockButton.gameObject.SetActive(false);
                PoorPeopleText.SetActive(false);
            }

            else
            {
                UnlockedText.SetActive(false);
                
                if (MoneyController.CouldBuy(CurrentCost))
                {
                    UnlockButton.gameObject.SetActive(true);
                    PoorPeopleText.SetActive(false);
                }

                else
                {
                    UnlockButton.gameObject.SetActive(false);
                    PoorPeopleText.SetActive(true);
                }
            }
        }

        private void Disable()
        {
            BoardGO.SetActive(false);
            foreach (GameObject child in ChildrenToKill)
            {
                Destroy(child);
            }
            ChildrenToKill.Clear();
        }
    }
}