using UnityEngine;

public class SpiderIdleState : SpiderStateBase
{
    public SpiderIdleState(BossController owner) : base(owner) { }

    public override void EnterState() => boss.Anim.SetTrigger("Idle");

    public override void UpdateState()
    {
        if (boss.Player == null) return;

        if (Vector3.Distance(boss.transform.position, boss.Player.position) <= boss.ChaseRange)
        {
            boss.ChangeState<SpiderChaseState>();
        }
    }
}

public class SpiderChaseState : SpiderStateBase
{
    public SpiderChaseState(BossController owner) : base(owner) { }

    public override void EnterState() => boss.Agent.isStopped = false;

    public override void UpdateState()
    {
        if (boss.Player == null) return;

        float distance = Vector3.Distance(boss.transform.position, boss.Player.position);

        // 遠距離突進判定（カプセル化されたプロパティを使用）
        if (distance >= boss.ChargeMinimumDistance && boss.ChargeCooldownTimer <= 0f)
        {
            boss.ChangeState<SpiderChargeState>();
            return;
        }

        // 至近距離噛みつき判定
        if (distance <= boss.BiteRange)
        {
            boss.ChangeState<SpiderBiteState>();
            return;
        }

        boss.Agent.SetDestination(boss.Player.position);
        boss.Anim.SetFloat("Speed", boss.Agent.velocity.magnitude);
    }
}

public class SpiderBiteState : SpiderStateBase
{
    private float stateTimer;

    public SpiderBiteState(BossController owner) : base(owner) { }

    public override void EnterState()
    {
        stateTimer = 1.5f;

        boss.Agent.ResetPath();
        boss.Agent.isStopped = true;
        boss.Agent.velocity = Vector3.zero;

        boss.Anim.SetFloat("Speed", 0f);
        boss.Anim.SetTrigger("Attack_Bite");
        Debug.Log("🎯 蜘蛛ボス：噛みつき攻撃！ その場に完全固定。");
    }

    public override void UpdateState()
    {
        boss.Agent.velocity = Vector3.zero;

        stateTimer -= Time.deltaTime;
        if (stateTimer <= 0f)
        {
            if (boss.PendingUltimate) boss.ChangeState<SpiderJumpToCeilingState>();
            else boss.ChangeState<SpiderChaseState>();
        }
    }
}

public class SpiderChargeState : SpiderStateBase
{
    private float roarTimer;
    private float chargeTimer;
    private Vector3 chargeDirection;
    private bool isChargingPhase;

    public SpiderChargeState(BossController owner) : base(owner) { }

    public override void EnterState()
    {
        roarTimer = boss.ChargeRoarDuration;
        chargeTimer = boss.ChargeDuration;
        isChargingPhase = false;

        boss.Agent.isStopped = true;
        boss.Agent.velocity = Vector3.zero;

        boss.ResetChargeCooldown();
        boss.Anim.SetTrigger("Attack_Roar");
        Debug.Log($"🔊 蜘蛛ボス：遠距離を検知。その場でピタッと完全停止。咆哮（溜め {roarTimer}秒）を開始！");
    }

    public override void ExitState()
    {
        boss.Anim.SetBool("IsCharging", false);
        boss.Agent.speed = boss.NormalSpeed;
        boss.Agent.acceleration = boss.NormalAcceleration;
        boss.Agent.isStopped = false;
    }

    public override void UpdateState()
    {
        // フェーズ1：咆哮・溜めロックオン
        if (!isChargingPhase)
        {
            roarTimer -= Time.deltaTime;
            boss.Agent.velocity = Vector3.zero; // 完全固定

            if (boss.Player != null)
            {
                Vector3 lookDir = (boss.Player.position - boss.transform.position).normalized;
                lookDir.y = 0;
                if (lookDir != Vector3.zero)
                {
                    boss.transform.rotation = Quaternion.Slerp(boss.transform.rotation, Quaternion.LookRotation(lookDir), Time.deltaTime * 10f);
                }
            }

            if (roarTimer <= 0f)
            {
                isChargingPhase = true;
                boss.Anim.SetTrigger("ChargeStart");
                boss.Anim.SetBool("IsCharging", true);

                if (boss.Player != null)
                {
                    chargeDirection = (boss.Player.position - boss.transform.position).normalized;
                    chargeDirection.y = 0;
                }

                Vector3 targetDestination = boss.transform.position + chargeDirection * 20f;

                boss.Agent.isStopped = false;
                boss.Agent.speed = boss.ChargeSpeed;
                boss.Agent.acceleration = 120f;
                boss.Agent.SetDestination(targetDestination);

                Debug.Log("🚀 蜘蛛ボス：ロックオン完了。全速力で突進ダッシュを発射！");
            }
            return;
        }

        // フェーズ2：突進移動中
        chargeTimer -= Time.deltaTime;

        if (chargeTimer <= 0f || (boss.Agent.velocity.magnitude < 0.2f && chargeTimer < (boss.ChargeDuration - 0.3f)))
        {
            boss.ChangeState<SpiderChaseState>();
        }
    }
}

public class SpiderJumpToCeilingState : SpiderStateBase
{
    private float roarTimer;
    private float jumpProgress;
    private Vector3 startPos;
    private bool isJumpingPhase;

    public SpiderJumpToCeilingState(BossController owner) : base(owner) { }

    public override void EnterState()
    {
        roarTimer = boss.JumpRoarDuration;
        jumpProgress = 0f;
        startPos = boss.transform.position;
        isJumpingPhase = false;

        boss.Agent.enabled = false;
        boss.Anim.SetTrigger("Attack_Roar");
        Debug.Log($"🚨 蜘蛛ボス：必殺技前の一大威嚇（咆哮 {roarTimer}秒）！");
    }

    public override void UpdateState()
    {
        // フェーズ1：飛び立つ前の威嚇
        if (!isJumpingPhase)
        {
            roarTimer -= Time.deltaTime;
            if (roarTimer <= 0f)
            {
                isJumpingPhase = true;
                boss.Anim.SetTrigger("JumpUp");
            }
            return;
        }

        // フェーズ2：ジャンプ空中移動
        if (boss.ceilingAnchor == null) return;

        jumpProgress += Time.unscaledDeltaTime * 1.5f;

        Vector3 currentPos = Vector3.Lerp(startPos, boss.ceilingAnchor.position, jumpProgress);
        currentPos.y += Mathf.Sin(jumpProgress * Mathf.PI) * 3f;

        boss.transform.position = currentPos;

        if (jumpProgress >= 1f)
        {
            boss.transform.position = boss.ceilingAnchor.position;
            boss.ChangeState<SpiderCeilingAttackState>();
        }
    }
}

public class SpiderCeilingAttackState : SpiderStateBase
{
    private float stateDuration = 7.0f;
    private float shotInterval = 0.4f;
    private float timer = 0f;
    private float shotTimer = 0f;

    public SpiderCeilingAttackState(BossController owner) : base(owner) { }

    public override void EnterState()
    {
        timer = stateDuration;
        shotTimer = 0f;
        boss.Anim.SetBool("IsOnCeiling", true);
        boss.PendingUltimate = false;
        Debug.Log("🕸️ 蜘蛛ボス：天井から無数の糸を乱射中！");
    }

    public override void ExitState()
    {
        boss.Anim.SetBool("IsOnCeiling", false);
        if (boss.groundAnchor != null) boss.transform.position = boss.groundAnchor.position;
        boss.Agent.enabled = true;
        boss.Anim.SetTrigger("Land");
    }

    public override void UpdateState()
    {
        timer -= Time.deltaTime;
        shotTimer -= Time.deltaTime;

        if (shotTimer <= 0f)
        {
            ExecuteRandomWebAttack();
            shotTimer = shotInterval;
        }

        if (timer <= 0f)
        {
            boss.ChangeState<SpiderChaseState>();
        }
    }

    private void ExecuteRandomWebAttack()
    {
        Vector2 randomCircle = Random.insideUnitCircle * boss.AttackRadius;
        Vector3 targetGroundPos = new Vector3(
            boss.groundAnchor.position.x + randomCircle.x,
            boss.groundAnchor.position.y,
            boss.groundAnchor.position.z + randomCircle.y
        );

        boss.SpawnWarningAndWeb(targetGroundPos, 1.0f, 2.5f);
    }
}

public class SpiderStunState : SpiderStateBase
{
    private float stunTimer;

    public SpiderStunState(BossController owner) : base(owner) { }

    public override void EnterState()
    {
        stunTimer = 4.0f;
        boss.Anim.SetTrigger("StunStart");
        boss.Anim.SetBool("IsStunned", true);
        if (boss.Agent.enabled) boss.Agent.isStopped = true;
        Debug.Log("🛡️ パリィ成功！ チャンスタイム！");

    }

    public override void ExitState()
    {
        boss.Anim.SetBool("IsStunned", false);
        if (boss.Agent.enabled) boss.Agent.isStopped = false;
    }

    public override void UpdateState()
    {
        stunTimer -= Time.deltaTime;
        if (stunTimer <= 0f)
        {
            if (boss.PendingUltimate) boss.ChangeState<SpiderJumpToCeilingState>();
            else boss.ChangeState<SpiderChaseState>();
        }
    }
}