import { MiniGamePlatform } from '../platform/MiniGamePlatform';

export class InterstitialAd {

    private static _keys: string[] = [];

    static init(keys: string[]) {
        this._keys = keys ?? [];
        MiniGamePlatform.init();
    }

    static showInterstitialAd(onAdClose?: Function, onFail?: Function, onSuccess?: Function) {
        MiniGamePlatform.init();
        const pf = MiniGamePlatform.pf;
        if (!pf?.createInterstitialAd) {
            onAdClose?.(true);
            return;
        }
        if (this._keys.length === 0) {
            onAdClose?.(false);
            return;
        }
        const keyIndex = Math.floor(Math.random() * this._keys.length);
        const interstitialAd = pf.createInterstitialAd({
            adUnitId: this._keys[keyIndex],
        });
        if (!interstitialAd) {
            onFail?.();
            return;
        }

        interstitialAd.onClose?.(() => {
            console.log('[InterstitialAd] onClose');
            try {
                interstitialAd.destroy?.();
            } catch { /* ignore */ }
            onAdClose?.();
        });

        const loadResult = interstitialAd.load?.();
        const afterLoad = () => {
            const showResult = interstitialAd.show?.();
            if (!showResult?.then) return;
            showResult.then(() => {
                console.log('[InterstitialAd] show ok');
                onSuccess?.();
            }).catch((err: unknown) => {
                console.log('[InterstitialAd] show fail', err);
                onFail?.();
            });
        };

        if (loadResult?.then) {
            loadResult.then(afterLoad).catch((err: unknown) => {
                console.log('[InterstitialAd] load fail', err);
                onFail?.();
            });
        } else {
            afterLoad();
        }
    }
}