using System.Collections.Generic;
using System.Linq;
using Babushka.scripts.CSharp.Common.Inventory;
using Godot;

namespace Babushka.scripts.CSharp.Common.Fight;

public partial class FightRoomSceneSetup : Node
{
    [Export(PropertyHint.ArrayType)] private Node2D[] _enemyGroupSpawns = null!;
    [Export] private PackedScene _roamingEnemyGroupPrefab = null!;
    [Export] private PackedScene _itemOnGroundPrefab = null!;
    [Export] private FightSceneSwitcher _fightSceneSwitcher = null!;


    public override void _Ready()
    {
        var room = FightWorld.Instance.currentRoom!;

        foreach (var (parent, group) in _enemyGroupSpawns.Zip(room.enemyGroups))
        {
            if (group.AreAllDead())
            {
                SpawnLoot(group, parent);
            }
            else
            {
                SpawnEnemies(group, parent);
            }
        }
    }

    private void SpawnEnemies(FightWorld.FighterGroup group, Node2D parent)
    {
        var roamingEnemyGroup = _roamingEnemyGroupPrefab.Instantiate<RoamingEnemyGroup>();
        roamingEnemyGroup.Initialize(group, _fightSceneSwitcher);
        parent.AddChild(roamingEnemyGroup);
    }

    private void SpawnLoot(FightWorld.FighterGroup group, Node2D parent)
    {
        if (group.lootToDrop == null)
            return;

        var onGroundInstance = _itemOnGroundPrefab.Instantiate<ItemOnGround2D>();
        onGroundInstance.itemInstance = group.lootToDrop;
        parent.AddChild(onGroundInstance);
    }
}