import { MessageBackEvent } from "./interfaces/FKWindow";
import { WindowManager } from "./managers/WindowManager";
import FKPlatform from "./FKPlatform";
window.addEventListener("DOMContentLoaded", () => {
    if (navigator && navigator.userAgent) {
        const windowObj = WindowManager.getWindow();
        if (windowObj) {
            windowObj.FKExtension = {
                newPlatformInstance: () => {
                    return new FKPlatform();
                },
            };
            document.addEventListener("message", onMessage);
        }
    }
});

function onMessage(event: MessageEvent | Event): void {
    // TS Hack - difference in TS types for window.addEventListener and document.addEventListener
    const messageEvent = event as MessageEvent;
    try {
        const dataFromHost: MessageBackEvent | undefined = messageEvent.data && typeof messageEvent.data === "string"
        ? JSON.parse(messageEvent.data) : undefined;
        if (dataFromHost) {
            const requestID: number | undefined = dataFromHost && dataFromHost.requestID;
            const successMessage: string | undefined = dataFromHost && dataFromHost.success;
            const errorMessage: string | undefined = dataFromHost && dataFromHost.error;
            const windowObj = WindowManager.getWindow();
            if (windowObj && requestID) {
                // Resolve with map using method name and module name map
                // also think of error logging here - how to do it
                if (successMessage) {
                    const resolveFunction: (data: any) => void = windowObj.promiseMap[requestID].resolveFunction;
                    resolveFunction(successMessage);
                } else {
                    const rejectFunction: (data: any) => void = windowObj.promiseMap[requestID].rejectFunction;
                    rejectFunction(errorMessage);
                }
            }
        }
    } catch (e) {
        // tslint:disable-next-line: no-console
        console.log(e);
    }
}