using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using UnityEngine;
using System.IO;
using UnityEngine.UI;
using SFB;

namespace RimWorldAnimationStudio
{
    public class ApplicationManager : Singleton<ApplicationManager>
    {
        public DialogBox exitDialog;
        public SelectAnimationDialog selectAnimationDialog;

        public void TryToCloseApplication()
        {
            exitDialog.Pop();
        }

        public void CloseApplication()
        {
            Debug.Log("Exiting application");
            Application.Quit();
        }

        public void TryToLoadAnimation()
        {
            var paths = StandaloneFileBrowser.OpenFilePanel("Open AnimationDef File", "", "xml", false);
            
            if (paths == null || paths.Any() == false)
            { Debug.LogError("Selected file was null or invalid"); return; }

            Defs defs = XmlUtility.ReadXML<Defs>(paths[0]);
            
            if (defs?.animationDefs == null)
            { Debug.LogError("Selected file contains no animation data"); return; }

            if (defs.animationDefs.Count == 1)
            { LoadAnimation(defs.animationDefs[0]); return;  }

            selectAnimationDialog.Initialize(defs);
            selectAnimationDialog.Pop();
        }

        public void LoadAnimation(AnimationDef animationDef)
        {
            animationDef.RunPostLoadOperations();
            Debug.Log("Loaded AnimationDef: " + animationDef.defName);
            
            Workspace.animationDef = animationDef;
            animationDef.Initialize();

            Workspace.Instance.ClearHistory();
            Workspace.Instance.RecordEvent("AnimationDef loaded");

            AnimationController.Instance.MakeDirty();

            var animationDefCards = Resources.FindObjectsOfTypeAll(typeof(AnimationDefCard)) as AnimationDefCard[];
   
            if (animationDefCards != null)
            {
                animationDefCards[0].Initialize();
                animationDefCards[0].gameObject.SetActive(true);
            }
        }

        public void TrySaveAnimation()
        {
            if (Workspace.animationDef == null)
            { return; }

            string defName = Workspace.animationDef.defName != null && Workspace.animationDef.defName != "" ? Workspace.animationDef.defName : "newAnimationDef";

            var path = StandaloneFileBrowser.SaveFilePanel("Save AnimationDef File", "", defName, "xml");

            if (path != null && path != "")
            { SaveAnimation(path); }
        }

        public void SaveAnimation(string path)
        {
            Debug.Log("Saving AnimationDef: " + Workspace.animationDef.defName);

            AnimationDef animationDef = Workspace.animationDef.Copy();
            animationDef.RunPreSaveOperations();

            Defs defs = new Defs();
            defs.animationDefs.Add(animationDef);

            XmlUtility.WriteXML(defs, path);
        }

        public void NewAnimation()
        {
            var path = Path.Combine(Application.streamingAssetsPath, "AnimationDefs/newAnimationDef.xml");

            Defs defs = XmlUtility.ReadXML<Defs>(path);

            if (defs?.animationDefs == null)
            { Debug.LogError("Default animation def file contains no animation data"); return; }

            LoadAnimation(defs.animationDefs[0]);
        }
    }
}