using System;
using UnityEngine;


namespace Unity.Startup.Procedure
{
    public enum UpdateProcedureState : byte
    {
        ProcedureStart,
        ProcedureGetGlobalInfoState,
        ProcedureGetAppVersionInfoState,
        ProcedureUpdateStaticVersion,
        ProcedureUpdateManifest,
        ProcedurePatchInit,
        ProcedureCreateDownloader,
        ProcedureDownloadWebFiles,
        ProcedurePatchDone,
        ProcedureClearCache,
        ProcedureLoadAssembly,
        ProcedureGameLauncherState
    }

    public class Procedure : MonoBehaviour
    {
        private SimpleFSM<UpdateProcedureState> _fsm;

        private void Start()
        {
            _fsm = new SimpleFSM<UpdateProcedureState>();
            _fsm.Register<ProcedureLauncherState>(UpdateProcedureState.ProcedureStart);
            _fsm.Register<ProcedureGetGlobalInfoState>(UpdateProcedureState.ProcedureGetGlobalInfoState);
            _fsm.Register<ProcedureGetAppVersionInfoState>(UpdateProcedureState.ProcedureGetAppVersionInfoState);
            _fsm.Register<ProcedureUpdateStaticVersion>(UpdateProcedureState.ProcedureUpdateStaticVersion);
            _fsm.Register<ProcedureUpdateManifest>(UpdateProcedureState.ProcedureUpdateManifest);
            _fsm.Register<ProcedurePatchInit>(UpdateProcedureState.ProcedurePatchInit);
            _fsm.Register<ProcedureCreateDownloader>(UpdateProcedureState.ProcedureCreateDownloader);
            _fsm.Register<ProcedureDownloadWebFiles>(UpdateProcedureState.ProcedureDownloadWebFiles);
            _fsm.Register<ProcedurePatchDone>(UpdateProcedureState.ProcedurePatchDone);
            _fsm.Register<ProcedureClearCache>(UpdateProcedureState.ProcedureClearCache);
            _fsm.Register<ProcedureLoadAssembly>(UpdateProcedureState.ProcedureLoadAssembly);
            _fsm.Register<ProcedureGameLauncherState>(UpdateProcedureState.ProcedureGameLauncherState);
            _fsm.SwitchState(UpdateProcedureState.ProcedureStart);
        }

        private void Update()
        {
            _fsm.Update(Time.deltaTime);
        }

        private void OnDestroy()
        {
            _fsm.Dispose();
            _fsm = null;
        }
    }
}