export interface IFBLoginRes {
    accessToken: string;
    /** iOS Limited Login JWT; never use as a Graph API access token. */
    authenticationToken?: string;
    tokenType?: "access" | "authentication";
    nonce?: string;
    isCancel: boolean;
    status?: string;
    reason?: string;
}

export type IFBEventValue = string | number;
export type IFBEventParams = Record<string, IFBEventValue>;

export interface IFBShareOptions {
    url: string;
    hashtag?: string;
    quote?: string;
}

export interface IFBShareRes {
    success: boolean;
    isCancel: boolean;
    postId?: string;
    reason?: string;
}

export abstract class FacebookImpl {
    private _isInitialized = false;

    public get isInitialized() { return this._isInitialized; }

    abstract init(): void;

    protected onInited() {
        this._isInitialized = true;
    }

    async login(): Promise<IFBLoginRes> {
        const res = await this.onLogin();
        return res;
    }

    protected abstract onLogin(): Promise<IFBLoginRes>;

    abstract logOut(): Promise<boolean>;

    abstract share(options: IFBShareOptions): Promise<IFBShareRes>;

    abstract logEvent(
        eventName: string,
        parameters?: IFBEventParams,
        valueToSum?: number,
    ): Promise<boolean>;

    abstract logPurchase(
        amount: number,
        currency: string,
        parameters?: IFBEventParams,
    ): Promise<boolean>;

    abstract flushEvents(): Promise<boolean>;
}