import { _decorator, Component, Node, Vec3 } from 'cc';
import { HeroViewComp } from './HeroViewComp';
import { SkillSet, TargetGroup, TargetType } from '../common/config/SkillSet';
import { Skill } from '../skills/Skill';
import { ecs } from 'db://oops-framework/libs/ecs/ECS';
import { oops } from 'db://oops-framework/core/Oops';
import { GameEvent } from '../common/config/GameEvent';
import { BoxSet } from '../common/config/BoxSet';
import { smc } from '../common/SingletonModuleComp';
import { CCComp } from 'db://oops-framework/module/common/CCComp';
const { ccclass, property } = _decorator;

@ccclass('SkillCon')
@ecs.register('SkillCon')
export class SkillConComp extends CCComp {
    
    HeroView:any=null;
    HeroEntity:any=null;
    private _timers: { [key: string]: number } = {};
    private _damageQueue: Array<{ timer: number; callback: () => void }> = [];
    init(): void {
        oops.message.on(GameEvent.FightEnd, this.clear_timer, this);
    }
    start() {
        // console.log("SkillConComp start")
        this.HeroView=this.node.getComponent(HeroViewComp)
        this.HeroEntity=this.HeroView.ent
    }

    update(dt: number) {
        if(!smc.mission.play||smc.mission.pause) return
        if (this.HeroView.is_atking &&this.HeroView.at > this.HeroView.cd) {
            const config = SkillSet[this.HeroView.atk_skill];
            if (!config) return;
            this.castSkill(this.HeroView, this.HeroView.atk_skill, config);
            this.HeroView.at = 0;
        }
    }

     /** 施放技能 */
     private castSkill(view: HeroViewComp, skillId: number, config: typeof SkillSet[keyof typeof SkillSet]) {
        // console.log(view.uuid+"=>"+view.hero_name+"施放技能:"+config.uuid);
        if (config.TargetGroup === TargetGroup.Enemy) {
            view.playSkillEffect(config.uuid);
            this.doSkill(view,config);
        }

        if (config.TargetGroup === TargetGroup.Ally) {
            const targets = this.selectAllyTargets(view, config);
            if (targets.length === 0) return;
          
        }
        if (config.TargetGroup === TargetGroup.Self) {
           
        }
  
    }
    private doSkill(view: HeroViewComp, config: typeof SkillSet[keyof typeof SkillSet]) {

        const skillEntity = ecs.getEntity<Skill>(Skill);
        const targets = this.selectEnemyTargets(view, config);
        if (targets.length === 0) return;
        skillEntity.load(
            new Vec3(view.node.position.x, view.node.position.y+BoxSet.ATK_Y, 0),   // 起始位置
            view.box_group,              // 阵营
            view.node.parent,      // 父节点
            config.uuid,           // 技能ID
            new Vec3(targets[0]?.get(HeroViewComp).node.position.x, targets[0]?.get(HeroViewComp).node.position.y, 0), // 目标位置
            view
        );
        // console.log("技能:"+config.uuid+"=>"+targets[0]?.get(HeroViewComp).hero_name);
    }

    private selectEnemyTargets(View: HeroViewComp, config: typeof SkillSet[keyof typeof SkillSet]): ecs.Entity[] {
        const team = View.fac;
        const isEnemyTeam = team === 0 ? 1 : 0;
        const candidates= ecs.query(ecs.allOf(HeroViewComp)).filter(e => e.get(HeroViewComp).fac !== team);
        return this.filterFrontRow(candidates, isEnemyTeam);
    }
       
    /** 筛选最前排单位 */
    private filterFrontRow(entities: ecs.Entity[], isEnemyTeam: number): ecs.Entity[] {
        // 敌方最前排是x坐标最大的，我方最前排是x坐标最小的
        const keyPos = isEnemyTeam ? 
            Math.min(...entities.map(e => e.get(HeroViewComp).node.position.x)) :
            Math.max(...entities.map(e => e.get(HeroViewComp).node.position.x));
            
        return entities.filter(e => 
            Math.abs(e.get(HeroViewComp).node.position.x - keyPos) < 10
        );
    }
    private selectAllyTargets(View: HeroViewComp, config: typeof SkillSet[keyof typeof SkillSet]): ecs.Entity[] {
        const team = View.fac;
        const candidates= ecs.query(ecs.allOf(HeroViewComp)).filter(e => e.get(HeroViewComp).fac === team);
        // 第二阶段：位置/血量等精细筛选
        switch(config.TargetType) {
            case TargetType.Melee:
                return candidates.filter(e => e.get(HeroViewComp).type === 0);
            case TargetType.Ranged:
                return candidates.filter(e => e.get(HeroViewComp).type === 1);
            case TargetType.SupportClass:
                return candidates.filter(e => e.get(HeroViewComp).type === 2);
            case TargetType.Random:
                return this.pickRandomTarget(candidates, config.count || 1);
            default:
                return candidates;
        }
    }
      /** 随机选择目标 */
      private pickRandomTarget(entities: ecs.Entity[], count: number): ecs.Entity[] {
        const shuffled = [...entities].sort(() => 0.5 - Math.random());
        return shuffled.slice(0, count);
    }
    public clear_timer() {
        // console.log("clear_timer");
        Object.values(this._timers).forEach(clearTimeout);
    }

    reset() {
        this.clear_timer();
    }

    onDestroy() {
        // console.log("SkillConComp onDestroy")
        Object.values(this._timers).forEach(clearTimeout);
    }
}