using Spine;
using Spine.Unity;
using Spine.Unity.AttachmentTools;
using System.Linq;
using UnityEngine;

public class SpineSkinTest : MonoBehaviour
{
    [SerializeField] Material charMat;

    SkeletonAnimation skeletonAnimation;
    Skeleton skeleton => skeletonAnimation.Skeleton;

    int totalCostumeCount;
    int totalWeaponCount;

    int skinIndex = 1;
    int weaponSkinIndex = 1;

    private void Awake()
    {
        skeletonAnimation = GetComponent<SkeletonAnimation>();

        totalCostumeCount = skeleton.Data.Skins.Count((s) => s.Name.Contains("Costume/"));
        totalWeaponCount = skeleton.Data.Skins.Count((s) => s.Name.Contains("Weapon/"));
    }

    private void Start()
    {
        SetCustomSkin();
    }

    [ContextMenu("Change Costume")]
    private void ChangeCostume()
    {
        if(totalCostumeCount == 0) return;
        skinIndex = (skinIndex + 1) % (totalCostumeCount + 1);
        SetCustomSkin();
    }

    [ContextMenu("Change Weapon Skin")]
    private void ChangeWeaponSkin()
    {
        if(totalWeaponCount == 0) return;
        weaponSkinIndex = (weaponSkinIndex + 1) % (totalWeaponCount + 1);
        SetCustomSkin();
    }

    private void SetCustomSkin()
    {
        var newSkin = new Skin("custom");
        newSkin.AddSkin(skeleton.Data.DefaultSkin);

        if(skeleton.Data.TryGetSkin($"Costume/{skinIndex}", out Skin costumeSkin))
            newSkin.AddSkin(costumeSkin);

        if(skeleton.Data.TryGetSkin($"Weapon/{weaponSkinIndex}", out Skin weaponSkin))
            newSkin.AddSkin(weaponSkin);

        var repackedSkin = newSkin.GetRepackedSkin("custom", charMat, out var newMat, out var newTex);

        skeleton.SetSkin(repackedSkin);
        skeleton.SetSlotsToSetupPose();
        skeletonAnimation.Update(0);

        AtlasUtilities.ClearCache();
    }
}