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

namespace Fruitomation.Game
{
    public class FruitSpawner : MonoBehaviour
    {
        [Header("Settings")]
        [SerializeField] private int MaxSpawned;
        [SerializeField] private float MinSpawnTime;
        [SerializeField] private float MaxSpawnTime;
        
        [Header("References")]
        [SerializeField] private Transform FruitSpawnParent;
        [SerializeField] private Canvas GameCanvas;

        [Header("Prefabs")]
        [SerializeField] private GameObject BaseItemPrefab;
        [SerializeField] private GameObject ApplePrefab;
        [SerializeField] private GameObject GrapePrefab;
        [SerializeField] private GameObject BananaPrefab;
        [SerializeField] private GameObject MangoPrefab;
        [SerializeField] private GameObject DurianPrefab;
        [SerializeField] private GameObject PitayaPrefab;
        [SerializeField] private GameObject KiwiPrefab;
        [SerializeField] private GameObject BuddhasHandPrefab;

        private float TimeUntilNextSpawn;
        
        private int CurrentItemCount => FruitSpawnParent.childCount;
        
        private void Update()
        {
            if (CurrentItemCount <= MaxSpawned && GameStateController.Is(GameState.Simulation))
            {
                TimeUntilNextSpawn -= Time.deltaTime;
                
                if (TimeUntilNextSpawn <= 0f)
                {
                    TimeUntilNextSpawn = Random.Range(MinSpawnTime, MaxSpawnTime);
                    SpawnFruit();
                }
            }
        }

        private void SpawnFruit()
        {
            List<(ItemType, GameObject)> unlocked = new() { (ItemType.Apple, ApplePrefab) };

            if (UpgradeManager.Is(BasicUpgrade.Grapes))
                unlocked.Add((ItemType.Grape, GrapePrefab));
            
            if (UpgradeManager.Is(BasicUpgrade.Bananas))
                unlocked.Add((ItemType.Banana, BananaPrefab));
            
            if (UpgradeManager.Is(BasicUpgrade.Kiwi))
                unlocked.Add((ItemType.Kiwi, KiwiPrefab));
            
            if (UpgradeManager.Is(BasicUpgrade.Mangoes))
                unlocked.Add((ItemType.Mango, MangoPrefab));
            
            if (UpgradeManager.Is(BasicUpgrade.Durian))
                unlocked.Add((ItemType.Durian, DurianPrefab));
            
            if (UpgradeManager.Is(BasicUpgrade.BuddhasHand))
                unlocked.Add((ItemType.BuddhasHand, BuddhasHandPrefab));
            
            if (UpgradeManager.Is(BasicUpgrade.Pitayas))
                unlocked.Add((ItemType.Pitaya, PitayaPrefab));
            
            GameObject parent = Instantiate(BaseItemPrefab, FruitSpawnParent);
            
            (ItemType type, GameObject prefab) = unlocked[Random.Range(0, unlocked.Count)];
            GameObject go = Instantiate(prefab, parent.transform);
            
            ItemBehaviour behaviour = parent.GetComponent<ItemBehaviour>();
            Debug.Assert(behaviour is not null, "Could not find ItemBehaviour");

            behaviour.InitBehaviour(GameCanvas, type);
        }
    }
}