// @ts-check

/**
 * @typedef {object} GoogleGetAccessTokenFunctionParams
 * @property {string} clientId - Google app client ID: {@link https://datasquirel.com/docs}
 * @property {boolean} [triggerPrompt] - Whether to trigger Google signing popup or not: {@link https://datasquirel.com/docs}
 * @property {React.Dispatch<React.SetStateAction<boolean>>} [setLoading] - React setState Function: sets whether the google login button is ready or not
 *
 */

/** @type {any} */
let interval;

/**
 * Login with Google Function
 * ===============================================================================
 * @description This function uses google identity api to login a user with datasquirel
 *
 * @async
 *
 * @requires script "https://accounts.google.com/gsi/client" async script added to head
 *
 * @param {GoogleGetAccessTokenFunctionParams} params - Single object passed

 * @returns {Promise<string>} - Access Token String
 */
module.exports = async function getAccessToken(params) {
    params.setLoading?.(true);

    const response = await new Promise((resolve, reject) => {
        interval = setInterval(() => {
            // @ts-ignore
            let google = window.google;

            if (google) {
                window.clearInterval(interval);
                resolve(googleLogin({ ...params, google }));
            }
        }, 500);
    });

    params.setLoading?.(false);

    return response;
};

/**
 * # Google Login Function
 *
 * @param {GoogleGetAccessTokenFunctionParams & { google: any }} params
 * @returns
 */
function googleLogin({ google, clientId, setLoading, triggerPrompt }) {
    setTimeout(() => {
        setLoading?.(false);
    }, 3000);

    return new Promise((resolve, reject) => {
        /**
         * # Callback Function
         * @param {import("../../../package-shared/types").GoogleAccessTokenObject} response
         */
        function handleCredentialResponse(response) {
            resolve(response.access_token);
        }

        const googleAuth = google.accounts.oauth2.initTokenClient({
            client_id: clientId,
            scope: "email profile",
            callback: handleCredentialResponse,
        });

        googleAuth.requestAccessToken();

        if (triggerPrompt) {
            google.accounts.id.prompt(triggerGooglePromptCallback);
        }

        /**
         * Google prompt notification callback
         * ========================================================
         * @param {import("../../../package-shared/types").GoogleIdentityPromptNotification} notification
         */
        function triggerGooglePromptCallback(notification) {
            console.log(notification);
        }
    });
}