using BaseGames.Combat;

namespace BaseGames.Player.States
{
    /// <summary>
    /// 上劈状态（架构 05_PlayerModule §2）。
    /// HitBox 由 ComboStepConfig 时间窗口驱动；结束后回到 Idle（地面）或 FallState（空中）。
    /// </summary>
    public class UpAttackState : PlayerStateBase
    {
        public UpAttackState(PlayerController owner) : base(owner) { }

        public override void OnStateEnter()
        {

            // 上劈反嵈：空中施加向下微小冲量，增强出招手感（地面无效）
            if (!Move.IsGrounded && Move?.Rb != null)
                Move.Rb.velocity = new UnityEngine.Vector2(Move.Rb.velocity.x, Move.Rb.velocity.y - 3f);

            var step = Owner.Weapon?.ActiveWeapon?.GetDirStep(AttackDirection.Up);
            float spd = Stats?.AnimatorSpeedMultiplier ?? 1f;

            if (step?.clip?.Clip != null)
            {
                var animState = Anim.Play(step.Value.clip);
                animState.Speed *= spd;
                var events = animState.Events(this);
                events.OnEnd = OnClipEnd;
                var s = step.Value;
                events.Add(s.hitBoxEnter, () => Owner.Combat?.EnableWeaponHitBox(AttackDirection.Up, s.hitBoxId));
                events.Add(s.hitBoxExit,  () => Owner.Combat?.DisableAllWeaponHitBoxes());
            }
            else
            {
                Owner.Combat?.EnableWeaponHitBox(AttackDirection.Up);
                OnClipEnd();
            }
        }

        public override void OnStateExit()
        {
            Owner.Combat?.DisableAllWeaponHitBoxes();
        }

        private void OnClipEnd()
        {
            if (Move.IsGrounded)
                Owner.TransitionTo(Owner.GetState<IdleState>());
            else
                Owner.TransitionTo(Owner.GetState<FallState>());
        }

        public override void OnStateFixedUpdate()
        {
            // 地面上劈期间调用 Move(0) 叠加 _platformVelocity.x，使玩家随移动平台同步移动。
            if (Move != null && Move.IsGrounded)
                Move.Move(0f);
        }
    }
}