using TMPro;
using UnityEngine;
using UnityEngine.UI;

namespace DepthsOfGreed.HandbookUI
{
    public sealed class BasementBattleOverview : MonoBehaviour
    {
        [Tooltip("Optionale Komponente mit ICombatOverview. Keine eigene Kampf- oder Schleusenlogik.")]
        [SerializeField] private MonoBehaviour combatBackend;
        public TMP_Text floorText;
        public Image[] gateIcons;
        public TMP_Text[] gateLabels;
        [Range(0,1)]public float criticalFraction=.25f;
        private readonly long[] lastHits=new long[4];
        private readonly float[] flashUntil=new float[4];
        private readonly bool[] initialized=new bool[4];
        private float nextRefresh;
        private CombatOverviewState state;
        private string lastFloor;
        public void BindCombatBackend(MonoBehaviour backend)
        {if(backend && !(backend is ICombatOverview)){Debug.LogError("Schleusenübersicht benötigt ICombatOverview.",backend);return;}combatBackend=backend;System.Array.Clear(initialized,0,4);nextRefresh=0;}
        void Update()
        {
            if(Time.unscaledTime>=nextRefresh){nextRefresh=Time.unscaledTime+.15f;state=combatBackend && combatBackend is ICombatOverview source?source.ReadCombatOverview():null;}
            if(lastFloor!=state?.floorName){System.Array.Clear(initialized,0,4);lastFloor=state?.floorName;}
            floorText.text=string.IsNullOrEmpty(state?.floorName)?"Ebene —":state.floorName;
            string[] directions={"N","O","S","W"};
            for(int i=0;i<4;i++)
            {
                GateOverviewState gate=null;
                if(state?.gates!=null)foreach(var item in state.gates)if(item!=null && (int)item.direction==i){gate=item;break;}
                if(gate==null){gateLabels[i].text=directions[i]+" —";gateIcons[i].color=new Color(.5f,.5f,.5f);initialized[i]=false;continue;}
                if(initialized[i] && gate.hitSequence>lastHits[i])flashUntil[i]=Time.unscaledTime+.65f;
                initialized[i]=true;lastHits[i]=gate.hitSequence;
                bool known=gate.maxHealth>0;float ratio=known?Mathf.Clamp01(gate.health/gate.maxHealth):1;
                bool critical=known && ratio<=criticalFraction;
                bool alarm=critical || gate.underAttack || Time.unscaledTime<flashUntil[i];
                gateIcons[i].color=alarm?Color.Lerp(new Color(.5f,.12f,.1f),new Color(1,.4f,.2f),.5f+.5f*Mathf.Sin(Time.unscaledTime*9)):gate.isOpen?new Color(.8f,.6f,.2f):new Color(.3f,.3f,.3f);
                gateLabels[i].text=directions[i]+" "+(known?Mathf.Max(0,gate.health).ToString("0"):"—")+(known && gate.health<=0?" ×":(gate.isOpen?" offen":"")+(gate.underAttack?" !":""));
            }
        }
    }
}