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

namespace Continentis.Mods.Basic.Buffs
{
    /// <summary>
    /// 祈雨（专注）：每回合开始时对全体友方（包括自身）回复少量生命值，持续若干回合。
    /// 属于专注类 Buff，个数上限由 MaximumFocusingBuffAmount 决定；
    /// 若已有相同 Buff 存在则直接替换，不叠加持续时间。
    /// </summary>
    public class PrayingForRain : CharacterCombatBuffBase
    {
        private readonly int healAmount;

        public PrayingForRain(int healAmount, int duration)
        {
            this.healAmount = healAmount;

            Initialize(BuffType.Focusing, BuffDispelLevel.Strong);

            this.contentSubmodule = new ContentSubmodule(this)
                .AddParameterGetter("HealAmount", () => this.healAmount.ToString())
                .AddParameterGetter("Count",   () => roundCountSubmodule.remainingCount.ToString());

            this.iconSubmodule = new IconSubmodule(this);

            // 回合计数：框架每回合开始时自动 Update()，归零时移除 Buff
            this.roundCountSubmodule = new CountSubmodule(this, duration);

            this.eventSubmodule = new EventSubmodule(this);
            this.eventSubmodule.onRoundStart.Add("PrayingForRain_HealAllies", new PrioritizedAction(() =>
            {
                List<CharacterBase> allies = CombatMainManager.Instance.characterController
                    .GetAllAllies(attachedCharacter, includeSelf: true);

                foreach (CharacterBase ally in allies)
                {
                    ally.Heal(this.healAmount);
                }
            }));
        }

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

            // 已有相同 Buff：直接替换（重置持续时间），不进行层数处理
            if (FocusingCheck(out existingBuff))
            {
                existingBuff.roundCountSubmodule.Refresh(
                    roundCountSubmodule.maximumCount, keepMaximal: false);
                return false;
            }

            return true;
        }
    }
}