import { sys } from "cc";
import { WeChatAdManager } from "./WeChatAdManager";
import { DouYinAdManager } from "./DouYinAdManager";
import { KuaiShouAdManager } from "./KuaiShouAdManager";


export class AdManager {
    private static _instance: AdManager;
    public static getInstance(): AdManager {
        if (!AdManager._instance) {
            if ((sys.platform == sys.Platform.WECHAT_GAME) && window.ks) {
                AdManager._instance = new AdManager('kuaihsou');
            } else if (sys.platform == sys.Platform.WECHAT_GAME) {
                AdManager._instance = new AdManager('wechat');
            }
            else if (sys.platform == sys.Platform.BYTEDANCE_MINI_GAME) {
                AdManager._instance = new AdManager('douyin');
            }
            else {
                AdManager._instance = new AdManager('wechat');
            }
        }
        return AdManager._instance;
    }

    private currentAdManager: WeChatAdManager | DouYinAdManager | KuaiShouAdManager;

    constructor(platform: string) {
        sys.Platform.WECHAT_GAME
        switch (platform) {
            case 'wechat':
                this.currentAdManager = new WeChatAdManager();
                break;
            case 'douyin':
                this.currentAdManager = new DouYinAdManager();
                break;
            case 'kuaihsou':
                this.currentAdManager = new KuaiShouAdManager();
                break;
            default:
                console.log('Unsupported platform');
        }
    }

    public showBannerAd() {
        if (this.currentAdManager) {
            this.currentAdManager.showBannerAd();
        }
    }

    public showRewardVideoAd(successCallback: (res) => void) {
        if (this.currentAdManager) {
            this.currentAdManager.showRewardVideoAd(successCallback);
        }
    }

    public showInterstitialAd() {
        if (this.currentAdManager) {
            this.currentAdManager.showInterstitialAd();
        }
    }
}