using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using TMPro;
using Player.Information;

namespace Player.Interactions
{
    public class ConstructSelector : MonoBehaviour
    {
        public GameObject foodMakerPrefab;
        public GameObject player;
        public Sprite foodMakerImage;
        public GameObject waterMakerPrefab;
        public Sprite waterMakerImage;
        public GameObject healthAreaPrefab;
        public Sprite healthAreaImage;
        public Image constructImage;
        public GameObject selectedImage;
        public GameObject unselectedArrow;
        
        private readonly List<ConstructMenuItem> choices = new();
        public TMP_Text constructDesc;

        public TMP_Text constructName;

        private int currentIndex;
        private int selectedIndex;
        private PlayerStats playerStats;
        // Start is called before the first frame update
        private void Start()
        {
            player = GameObject.FindGameObjectWithTag("Player");
            playerStats = player.GetComponent<PlayerStats>();
            choices.Add(new ConstructMenuItem("Nutrient Consolidator", foodMakerImage,
                "Scrapes nutrients from the ground to make food.\n\nRelies on local biodensity.", foodMakerPrefab));
            choices.Add(new ConstructMenuItem("Water Condenser", waterMakerImage,
                "Condenses vapor from the atmosphere to make water.\n\nRelies on local humidity.", waterMakerPrefab));
            choices.Add(new ConstructMenuItem("Regeneration Field", healthAreaImage,
                "Distributes nanites onto organisms to repair tissue.\n\nRequires proximity.", healthAreaPrefab));

            currentIndex = 0;
            selectedIndex = 0;

            RenderPanel();
        }

        // Update is called once per frame
        private void Update()
        {
            if (Input.GetKeyDown(KeyCode.LeftArrow) )
            {
                currentIndex--;
                if (currentIndex < 0) currentIndex = choices.Count - 1;

                RenderPanel();
            }

            if (Input.GetKeyDown(KeyCode.RightArrow))
            {
                currentIndex++;
                if (currentIndex >= choices.Count) currentIndex = 0;

                RenderPanel();
            }

            if (Input.GetKeyDown(KeyCode.UpArrow) )
            {
                selectedIndex = currentIndex;
                RenderPanel();
            }

            if (Input.GetKeyDown(KeyCode.DownArrow))
            {
            }
        }

        public void RenderPanel()
        {
            constructName.SetText(choices[currentIndex].GetName());
            constructImage.sprite = choices[currentIndex].GetImage();
            constructDesc.SetText(choices[currentIndex].GetDesc());
            if (selectedIndex == currentIndex)
            {
                selectedImage.SetActive(true);
                unselectedArrow.SetActive(false);
            }
            else
            {
                selectedImage.SetActive(false);
                unselectedArrow.SetActive(true);
            }
        }

        public GameObject GetSelected()
        {
            return choices[selectedIndex].GetTarget();
        }
    }
}