using System;

using Colosseum.AI;
using Colosseum.Enemy;

using Unity.Behavior;
using Unity.Properties;
using UnityEngine;

/// <summary>
/// 지정된 공통 패턴 역할을 실행하는 액션 기반 클래스입니다.
/// </summary>
[Serializable, GeneratePropertyBag]
public abstract partial class UsePatternRoleActionBase : BossPatternActionBase
{
    /// <summary>
    /// 현재 액션이 실행할 공통 패턴 역할입니다.
    /// </summary>
    protected abstract BossCombatPatternRole PatternRole { get; }

    protected override bool TryResolvePattern(out BossPatternData pattern, out GameObject target)
    {
        BossCombatBehaviorContext context = GameObject.GetComponent<BossCombatBehaviorContext>();
        pattern = context != null ? context.GetPattern(PatternRole) : null;
        target = Target != null ? Target.Value : null;

        if (pattern == null || !UsePatternAction.IsPatternReady(GameObject, pattern))
            return false;

        if (target == null && PatternRole.IsMeleeRole())
            target = ResolvePrimaryTarget();

        if (target == null && PatternRole == BossCombatPatternRole.Mobility)
            target = context != null ? context.FindMobilityTarget() : null;

        if (target == null)
            return false;

        if (PatternRole.IsMeleeRole() && context != null)
            context.RegisterPatternUse(PatternRole);

        return true;
    }

    protected override GameObject ResolveStepTarget(GameObject fallbackTarget)
    {
        BossCombatBehaviorContext context = GameObject.GetComponent<BossCombatBehaviorContext>();
        if (PatternRole == BossCombatPatternRole.Mobility && context != null)
        {
            return context.IsValidMobilityTarget(fallbackTarget)
                ? fallbackTarget
                : context.FindMobilityTarget();
        }

        return base.ResolveStepTarget(fallbackTarget);
    }
}