using GeometryTD.UI;
using UnityGameFramework.Runtime;
using GeometryTD.CustomEvent;
using GeometryTD.Definition;
using GeometryTD.Procedure;

namespace GeometryTD.CustomComponent
{
    public class ShopNodeComponent : GameFrameworkComponent
    {
        private RunNodeExecutionContext _activeContext;

        private ShopFormUseCase _shopFormUseCase;
        private bool _initialized;

        public void OnInit()
        {
            if (_initialized)
            {
                return;
            }

            _shopFormUseCase ??= new ShopFormUseCase();
            GameEntry.UIRouter.BindUIUseCase(UIFormType.ShopForm, _shopFormUseCase);
            _initialized = true;
        }

        public void StartShop(RunNodeExecutionContext context = null)
        {
            if (!_initialized)
            {
                OnInit();
            }

            int runSeed = context?.RunSeed ?? 0;
            int sequenceIndex = context?.SequenceIndex ?? -1;
            if (_shopFormUseCase == null || !_shopFormUseCase.PrepareForOpen(runSeed, sequenceIndex))
            {
                Log.Warning("ShopNodeComponent.StartShop() failed. Shop use case is unavailable or goods generation failed.");
                return;
            }

            _activeContext = context != null ? context.Clone() : null;
            GameEntry.UIRouter.OpenUI(UIFormType.ShopForm);
            GameEntry.Event.Fire(
                this,
                NodeEnterEventArgs.Create(
                    _activeContext?.RunId,
                    _activeContext?.NodeId ?? 0,
                    _activeContext?.NodeType ?? RunNodeType.None,
                    _activeContext?.SequenceIndex ?? -1));
        }

        public void EndShop()
        {
            GameEntry.UIRouter.CloseUI(UIFormType.ShopForm);
            GameEntry.Event.Fire(
                this,
                NodeCompleteEventArgs.Create(
                    _activeContext?.RunId,
                    _activeContext?.NodeId ?? 0,
                    _activeContext?.NodeType ?? RunNodeType.None,
                    _activeContext?.SequenceIndex ?? -1,
                    RunNodeCompletionStatus.Completed,
                    true,
                    _activeContext != null
                        ? _activeContext.CreateCompletionSnapshot(
                            GameEntry.PlayerInventory != null ? GameEntry.PlayerInventory.GetInventorySnapshot() : null)
                        : null));
            ClearActiveNodeContext();
        }

        private void ClearActiveNodeContext()
        {
            _activeContext = null;
        }
    }
}