export default (() => {
    const injectExtension = (uri, id) => {
        var js, fjs = document.getElementsByTagName("script")[0];
        if (document.getElementById(id)) { return; }
        js = document.createElement("script");
        js.id = id;
        js.src = uri;
        fjs.parentNode.insertBefore(js, fjs);
    }

    const _fbExtensions = ["MessengerExtensions", "FBExtensions"];
    let _extensions = {};

    window.extAsyncInit = function () {
        _fbExtensions.forEach(s => {
            if (!_extensions[s] && window[s]) {
                _extensions[s] = window[s];
                console.log(`${s} successfully loaded.`);
            }

            if (_extensions[_fbExtensions[1]]) {
                _extensions[_fbExtensions[1]].init({
                    appId: "396172707252895"
                });
            }
        });
    };

    (() => {
        injectExtension("//connect.facebook.net/en_US/messenger.Extensions.js", "Messenger");
        injectExtension("//connect.facebook.net/en_US/platform.FBExtension.js", "fb-extension");
    })();

    return {
        fillInputs: () => {
            console.log(_extensions);
            console.log(_extensions[_fbExtensions[1]].Autofill)
        },
        closeBrowser: async () => new Promise((resolve, reject) => _extensions[_fbExtensions[0]].requestCloseBrowser(resolve, reject))
    };
})();