import { _decorator } from 'cc';
import { BaseSingleton } from '../Core/BaseSingleton';
import EventBus, { GameEvents } from '../Core/EventBus';
import { EnemyController } from '../CombatSystem/EnemyController';
const { ccclass } = _decorator;

@ccclass('LevelStateManager')
export class LevelStateManager extends BaseSingleton {
    public static _instance: LevelStateManager;

    private currentWave = 1;
    private currentWaveEnemyCount = 0;
    private totalEnemiesInWave = 0;

    protected init() {
        // 临时监听示例，如需根据 LevelConfigManager 生成波次数据再完善
        EventBus.getInstance().on('NEXT_WAVE', this.nextWave, this);
    }

    public setWaveInfo(wave: number, totalEnemies: number) {
        this.currentWave = wave;
        this.totalEnemiesInWave = totalEnemies;
        this.currentWaveEnemyCount = 0;
    }

    public enemySpawned() {
        this.currentWaveEnemyCount++;
    }

    public enemyKilled() {
        this.currentWaveEnemyCount--;
        if (this.currentWaveEnemyCount <= 0) {
            EventBus.getInstance().emit('WAVE_CLEAR', this.currentWave);
        }
    }

    private nextWave() {
        this.currentWave++;
        // TODO: 读取 LevelConfigManager 获得下一波敌人信息并驱动 EnemyController
        EnemyController.getInstance()?.resumeSpawning();
    }
}