using GeometryTD.CustomComponent;
using GeometryTD.CustomUtility;
using GeometryTD.Definition;
using UnityEngine;

namespace GeometryTD.UI
{
    public class CombatFinishFormUseCase : IUIUseCase
    {
        private ICombatSchedulerHost _combatSchedulerHost;
        private CombatSettlementContext _settlementContext;
        private bool _isSummaryPrepared;

        public CombatFinishFormRawData CreateInitialModel()
        {
            return BuildModel();
        }

        public CombatFinishFormRawData TryRefresh()
        {
            return BuildModel();
        }

        internal void SetSummary(CombatSettlementContext settlementContext)
        {
            _settlementContext = settlementContext;
            _isSummaryPrepared = true;
        }

        internal CombatFinishFormUseCase(ICombatSchedulerHost combatSchedulerHost)
        {
            _combatSchedulerHost = combatSchedulerHost;
        }

        public bool TryReturnToMenu()
        {
            return _combatSchedulerHost != null && _combatSchedulerHost.OnCombatFinishReturnRequested();
        }

        private CombatFinishFormRawData BuildModel()
        {
            if (!_isSummaryPrepared)
            {
                _settlementContext = null;
            }

            BackpackInventoryData rewardInventory = _settlementContext?.Summary.RewardInventory;
            if (rewardInventory == null)
            {
                rewardInventory = InventorySeedUtility.CreateSampleInventory();
            }

            return new CombatFinishFormRawData
            {
                DefeatedEnemyCount = Mathf.Max(0, _settlementContext?.Summary.DefeatedEnemyCount ?? 0),
                GainedGold = Mathf.Max(0, _settlementContext?.Summary.GainedGold ?? 0),
                RewardInventory = rewardInventory,
                CanReturn = true
            };
        }
    }
}