using System.Collections.Generic;
using Continentis.MainGame;
using Continentis.MainGame.Character;
using SLSUtilities.General;
using UnityEngine;

namespace Continentis.Mods.Basic.Buffs
{
    public class Protecting : CharacterCombatBuffBase
    {
        public CharacterBase target;
        public Protected protectedBuff;

        public Protecting(CharacterBase target, int actionCount, Protected protectedBuff)
        {
            Initialize(BuffType.Neutral, BuffDispelLevel.DeathOnly, 100);
            this.target = target;
            this.protectedBuff = protectedBuff;
            
            if (this.protectedBuff == null)
            {
                Debug.LogError("Protecting buff requires a Protected buff on the target.");
            }
            
            this.contentSubmodule = new ContentSubmodule(this)
                .AddParameterGetter("Count", () => roundFirstActionCountSubmodule.remainingCount.ToString())
                .AddParameterGetter("Target", () => target.data.displayName);//TODO: 以后增加角色的ContentSubmodule

            this.iconSubmodule = new IconSubmodule(this).SetTextFunctions("Count");
            
            this.roundFirstActionCountSubmodule = new CountSubmodule(this, actionCount);
        }

        public override bool OnBuffApply(out CharacterCombatBuffBase existingBuff)
        {
            MainGameManager.Instance.basePrefabs.GenerateInfoText(contentSubmodule.displayName,
                attachedCharacter.characterView);

            if (attachedCharacter.combatBuffSubmodule.TryGetBuff(out Protected conflictProtected))
            {
                //如果目标已经有Protected Buff，则应当将其移除，以防止冲突.
                //使用移除所有保护者的方式来移除。
                Debug.Log(
                    $"Conflicted Protected buff found, with {conflictProtected.protectingSources.Count} protecting sources. Removing all.");
                conflictProtected.protectingSources.For(ps => ps.Remove());
            }
            
            if (FindExistingSameBuffs(out List<Protecting> existingProtecting))
            {
                var sameProtecting = existingProtecting.Find(ep => ep.target == this.target);
                if (sameProtecting != null)
                {
                    existingBuff = sameProtecting;
                    sameProtecting.roundFirstActionCountSubmodule.AddCount(this.roundFirstActionCountSubmodule.remainingCount);
                    return false;
                }
                
                existingBuff = null;
                return true; //独立处理，直接返回true
            }

            existingBuff = null;
            return true;
        }

        public override void OnAfterFirstApply()
        {
            base.OnAfterFirstApply();
            protectedBuff.protectingSources.Add(this);
        }

        public override void OnBuffRemove()
        {
            base.OnBuffRemove();
            protectedBuff.protectingSources.Remove(this);
            Debug.Log($"Protecting buff removed. Remaining protecting sources: {protectedBuff.protectingSources.Count}");
            if (protectedBuff.protectingSources.Count == 0)
            {
                protectedBuff.Remove();
            }
        }
    }
}