using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

namespace DepthsOfGreed.HandbookUI
{
    public sealed class HandbookStatisticsController : MonoBehaviour
    {
        public SupplyBasementController supplyView;
        public TestPlacementController placement;
        public TMP_Text resourcesText,emptyText;
        public TMP_Text[] channelTitles,channelStocks,channelRates,channelTimes;
        public TMP_Text[] towerNames,towerMagazines,towerRates;
        public GameObject[] towerRows;
        public Button perSecondButton,perMinuteButton;
        public TMP_Text rateHeading;
        private bool perMinute=true;
        private float nextRefresh;
        private readonly List<TowerSupplyState> towers=new List<TowerSupplyState>();
        private readonly string[] names={"Physisch","Energiezellen","Sondermunition"};
        void Awake(){perSecondButton.onClick.AddListener(()=>SetUnit(false));perMinuteButton.onClick.AddListener(()=>SetUnit(true));}
        void OnEnable(){nextRefresh=0;}
        public void SetUnit(bool minute){perMinute=minute;nextRefresh=0;}
        public static string FormatRate(float? rate,bool minute)
        {
            if(!rate.HasValue || float.IsNaN(rate.Value) || float.IsInfinity(rate.Value) || rate.Value<0)return "—";
            return (rate.Value*(minute?60:1)).ToString("0.#")+(minute?" / min":" / s");
        }
        public static string Estimate(float buffer,float? rate)
        {
            if(!rate.HasValue || float.IsNaN(rate.Value) || float.IsInfinity(rate.Value) || rate.Value<0)return "—";
            if(rate.Value==0)return "kein Verbrauch";
            float seconds=Mathf.Max(0,buffer)/rate.Value;
            if(seconds>5999)return "> 99 min";
            int rounded=Mathf.CeilToInt(seconds);return "ca. "+(rounded/60).ToString("00")+":"+(rounded%60).ToString("00");
        }
        void Update(){if(Time.unscaledTime<nextRefresh)return;nextRefresh=Time.unscaledTime+.25f;Refresh();}
        public void Refresh()
        {
            SupplyState state=supplyView && supplyView.HasSupplyBackend?supplyView.SupplyBackend.ReadState():null;
            resourcesText.text=placement && placement.Backend!=null?"Mauerplätze "+placement.Backend.WallCount+" / "+placement.Backend.WallLimit+"\nEnergie "+placement.Backend.Energy+"  ·  Gedärme "+placement.Backend.Entrails:"";
            perSecondButton.GetComponent<Image>().color=perMinute?new Color(.82f,.82f,.82f):new Color(.55f,.55f,.55f);
            perMinuteButton.GetComponent<Image>().color=perMinute?new Color(.55f,.55f,.55f):new Color(.82f,.82f,.82f);
            rateHeading.text=perMinute?"Verbrauch / min":"Verbrauch / s";
            for(int i=0;i<3;i++)
            {
                SupplyChannelState channel=null;
                if(state?.channels!=null)foreach(var c in state.channels)if(c!=null && (int)c.kind==i){channel=c;break;}
                channelTitles[i].text=names[i];
                channelStocks[i].text=channel==null?"Lager —   ·   Verteiler —":"Lager "+channel.storage.ToString("0.#")+" / "+channel.storageCapacity.ToString("0.#")+"\nVerteiler "+channel.buffer.ToString("0.#")+" / "+channel.bufferCapacity.ToString("0.#");
                channelRates[i].text="Verbrauch: "+FormatRate(channel?.consumedPerSecond,perMinute);
                channelTimes[i].text="Verteiler ohne Nachschub: "+Estimate(channel==null?0:channel.buffer,channel?.consumedPerSecond);
            }
            towers.Clear();
            if(state?.towers!=null){foreach(var t in state.towers)if(t!=null && t.type)towers.Add(t);}
            else if(placement && placement.Backend!=null && !(supplyView && supplyView.HasSupplyBackend))
                foreach(var t in placement.Backend.BuiltObjects)if(t.type && t.type.supply.kind!=SupplyKind.None)
                    towers.Add(new TowerSupplyState{instanceId=t.instanceId,type=t.type,magazine=-1,magazineCapacity=-1});
            towers.Sort((a,b)=>{int type=string.CompareOrdinal(a.type.id,b.type.id);return type!=0?type:a.instanceId.CompareTo(b.instanceId);});
            emptyText.gameObject.SetActive(towers.Count==0);
            for(int i=0;i<towerRows.Length;i++)
            {
                towerRows[i].SetActive(i<towers.Count);if(i>=towers.Count)continue;var t=towers[i];
                towerNames[i].text=t.type.displayName+" #"+t.instanceId;
                towerMagazines[i].text=t.magazine<0?"—":t.magazine.ToString("0.#")+" / "+t.magazineCapacity.ToString("0.#");
                towerRates[i].text=FormatRate(t.consumedPerSecond,perMinute);
            }
        }
    }
}