using System;
using System.Collections;
using System.Collections.Generic;
using Ichni.RhythmGame.Beatmap;
using UnityEngine;

namespace Ichni.RhythmGame
{
    public partial class BackgroundSetter : GameElement
    {
        public bool useSkybox;
        public string skyboxThemeBundleName;
        public string skyboxMaterialName;
        public Material skyboxMaterial;
        public string backgroundSpriteName;
        public Sprite backgroundSprite;

        public SkyboxSubsetter skyboxSubsetter;
        
        public static BackgroundSetter GenerateElement(string elementName, Guid id, List<string> tags,
            bool isFirstGenerated, GameElement parentElement, bool useSkybox, string skyboxThemeBundleName,
            string skyboxMaterialName, string backgroundSpriteName)
        {
            BackgroundSetter backgroundSetter = Instantiate(GameManager.instance.basePrefabs.emptyObject)
                .AddComponent<BackgroundSetter>();
            GameManager.instance.backgroundSetter = backgroundSetter;
            backgroundSetter.Initialize(elementName, id, tags, isFirstGenerated, parentElement);
            backgroundSetter.useSkybox = useSkybox;
            backgroundSetter.skyboxThemeBundleName = skyboxThemeBundleName;
            backgroundSetter.skyboxMaterialName = skyboxMaterialName;
            backgroundSetter.backgroundSpriteName = backgroundSpriteName;
            return backgroundSetter;
        }
        public override void Refresh()
        {
            GameManager.instance.backgroundController.EnableBackground(!useSkybox);
            if (useSkybox && skyboxSubsetter == null)
            {
                SetSkybox(skyboxThemeBundleName, skyboxMaterialName);
            }
            else
            {
                SetBackgroundSprite(backgroundSpriteName);
            }
        }
    }

    public partial class BackgroundSetter
    {
        public override void SaveBM()
        {
            matchedBM = new BackgroundSetter_BM(elementName, elementGuid, tags, null,
                useSkybox, skyboxThemeBundleName, skyboxMaterialName, backgroundSpriteName);
        }
    }

    public partial class BackgroundSetter
    {
        private void SetSkybox(string themeBundleName, string materialName)
        {
            skyboxThemeBundleName = themeBundleName;
            skyboxMaterialName = materialName;
            skyboxMaterial = ThemeBundleManager.instance.GetObject<Material>(themeBundleName, materialName);
            if (skyboxMaterial == null) skyboxMaterial = GameManager.instance.basePrefabs.defaultSkyboxMaterial;
            GameManager.instance.backgroundController.SetSkybox(skyboxMaterial);
        }

        private void SetBackgroundSprite(string spriteName)
        {
            string path = GameManager.instance.projectInformation.projectPath + "/Sprites/" + spriteName + ".png";
            backgroundSprite = ES3.FileExists(path) ? ES3.Load<Sprite>(path) : GameManager.instance.basePrefabs.defaultBackground;
            GameManager.instance.backgroundController.SetBackground(backgroundSprite);
        }
    }

    namespace Beatmap
    {
        public class BackgroundSetter_BM : GameElement_BM
        {
            public bool useSkybox;
            public string skyboxThemeBundleName;
            public string skyboxMaterialName;
            public string backgroundSpriteName;

            public BackgroundSetter_BM()
            {

            }

            public BackgroundSetter_BM(string elementName, Guid elementGuid, List<string> tags, GameElement_BM attachedElement,
                bool useSkybox, string skyboxThemeBundleName, string skyboxMaterialName, string backgroundSpriteName)
                : base(elementName, elementGuid, tags, attachedElement)
            {
                this.useSkybox = useSkybox;
                this.skyboxThemeBundleName = skyboxThemeBundleName;
                this.skyboxMaterialName = skyboxMaterialName;
                this.backgroundSpriteName = backgroundSpriteName;
            }

            public override void ExecuteBM()
            {
                matchedElement = BackgroundSetter.GenerateElement(elementName, elementGuid, tags, false,
                    GetElement(attachedElementGuid), useSkybox, skyboxThemeBundleName, skyboxMaterialName, backgroundSpriteName);
            }
        }
    }
}