using Cielonos.MainGame.Characters;
using SLSUtilities.General;
using UnityEngine;

namespace Cielonos.MainGame
{
    public class ForceSubmodule : AttackAreaSubmoduleBase
    {
        public bool isCustomForce => !isRepulsion && !isSuction;
        public Vector3 customForce;
        
        public bool isRepulsion, isSuction;
        public float strengthXZ;
        public float strengthY;
        public Vector3 finalForce;
        
        public bool isDynamicForce;
        public float dynamicStrength;
        
        public bool isLaunch;         // 是否为无视抗性的击飞
        public float stasisDuration;  // 击中后的滞空时长（仅击飞有效）
        
        /// <summary>
        /// 施加自定义力
        /// </summary>
        public ForceSubmodule(AttackAreaBase attackArea, float dynamicStrength) : base(attackArea)
        {
            this.isDynamicForce = true;
            this.isRepulsion = false;
            this.isSuction = false;
            this.dynamicStrength = dynamicStrength;
        }
        
        /// <summary>
        /// 施加自定义力
        /// </summary>
        public ForceSubmodule(AttackAreaBase attackArea, Vector3 customForce) : base(attackArea)
        {
            this.isDynamicForce = false;
            this.customForce = customForce;
            this.isRepulsion = false;
            this.isSuction = false;
        }

        /// <summary>
        /// 施加斥力或吸力
        /// </summary>
        public ForceSubmodule(AttackAreaBase attackArea, float strengthXZ, bool isRepulsion, float strengthY = 0) : base(attackArea)
        {
            this.isDynamicForce = false;
            this.strengthXZ = strengthXZ;
            this.isRepulsion = isRepulsion;
            this.isSuction = !isRepulsion;
            this.strengthY = strengthY;
        }
        
        public ForceSubmodule(AttackAreaBase attackArea, float strengthXZ, bool isRepulsion, bool isLaunch, 
            float strengthY = 0, float stasisDuration = 0f) : base(attackArea)
        {
            this.isDynamicForce = false;
            this.strengthXZ = strengthXZ;
            this.isRepulsion = isRepulsion;
            this.isSuction = !isRepulsion;
            this.strengthY = strengthY;
            this.isLaunch = isLaunch;
            this.stasisDuration = stasisDuration;
        }
        
        public Vector3 GetFinalForce(CharacterBase target)
        {
            if (isRepulsion)
            {
                Vector3 repulsionDirection = (target.centerPoint.position - attackArea.topParent.position).Flatten().normalized;
                finalForce = repulsionDirection * strengthXZ + Vector3.up * strengthY;
            }
            else if (isSuction)
            {
                Vector3 suctionDirection = (attackArea.topParent.position - target.centerPoint.position).Flatten().normalized;
                finalForce = suctionDirection * strengthXZ + Vector3.up * strengthY;
            }
            else if(isDynamicForce)
            {
                Vector3 projectileDirection = attackArea.topParent.forward;
                finalForce = projectileDirection * dynamicStrength;
            }
            else
            {
                finalForce = customForce;
            }
            
            return finalForce;
        }
        

        public void ApplyForce(CharacterBase target)
        {
            Vector3 force = GetFinalForce(target);

            if (target.movementSc is AutomataLandMovementSubcontroller automataSc)
            {
                automataSc.ApplyHitImpact(force, isLaunch, isLaunch ? stasisDuration : 0f);
            }
            else
            {
                // 玩家或其他非自动单元处理
                target.movementSc.additionalForceSm.AddForce(force, isLaunch);
                if(force.y > 0) target.movementSc.gravitationalMovement = Vector3.zero;
            }
        }
    }
}