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Post signin / signup callbacks

1) On the frontend#

This method allows you to fire events immediately after a successful sign in. For example to send analytics events post sign in.

import SuperTokens from "supertokens-auth-react";
import ThirdPartyPasswordless from "supertokens-auth-react/recipe/thirdpartypasswordless";
import Session from "supertokens-auth-react/recipe/session";

SuperTokens.init({
appInfo: {
apiDomain: "...",
appName: "...",
websiteDomain: "..."
},
recipeList: [
ThirdPartyPasswordless.init({
contactMethod: "EMAIL_OR_PHONE",

onHandleEvent: async (context) => {
if (context.action === "SESSION_ALREADY_EXISTS") {
// TODO:
} else if (context.action === "PASSWORDLESS_RESTART_FLOW") {
// TODO:
} else if (context.action === "PASSWORDLESS_CODE_SENT") {
// TODO:
} else if (context.action === "SUCCESS") {
if (context.isNewRecipeUser && context.user.loginMethods.length === 1) {
if ("phoneNumber" in context.user) {
const { phoneNumber } = context.user;
} else {
const { emails } = context.user;
}
// TODO: Sign up
} else {
// TODO: Sign in
}
}
}
}),
Session.init()
]
});
info

Please refer to this page to learn more about the onHandleEvent hook.

2) On the backend#

For this, you'll have to override the consumeCode and thirdPartySignInUp recipe functions in the init function call.

import SuperTokens from "supertokens-node";
import ThirdPartyPasswordless from "supertokens-node/recipe/thirdpartypasswordless";
import Session from "supertokens-node/recipe/session";

SuperTokens.init({
appInfo: {
apiDomain: "...",
appName: "...",
websiteDomain: "..."
},
recipeList: [
ThirdPartyPasswordless.init({
contactMethod: "EMAIL", // This example will work with any contactMethod
flowType: "USER_INPUT_CODE_AND_MAGIC_LINK", // This example will work with any flowType

override: {
functions: (originalImplementation) => {
return {
...originalImplementation,
// override the thirdparty sign in / up API
thirdPartySignInUp: async function (input) {
// TODO: Some pre sign in / up logic

let response = await originalImplementation.thirdPartySignInUp(input);

if (response.status === "OK") {
let { id, emails } = response.user;

// This is the response from the OAuth 2 provider that contains their tokens or user info.
let providerAccessToken = response.oAuthTokens["access_token"];
let firstName = response.rawUserInfoFromProvider.fromUserInfoAPI!["first_name"];

if (input.session === undefined) {
if (response.createdNewRecipeUser && response.user.loginMethods.length === 1) {
// TODO: Post sign up logic
} else {
// TODO: Post sign in logic
}
}
}

return response;
},

consumeCode: async (input) => {
// First we call the original implementation of consumeCode.
const response = await originalImplementation.consumeCode(input);

// Post sign up response, we check if it was successful
if (response.status === "OK") {
if ("phoneNumber" in response.user) {
const { id, phoneNumbers } = response.user;
} else {
const { id, emails } = response.user;
}

if (input.session === undefined) {
if (response.createdNewRecipeUser && response.user.loginMethods.length === 1) {
// TODO: post sign up logic
} else {
// TODO: post sign in logic
}
}
}
return response;
}
}
}
}
}),
Session.init({ /* ... */ })
]
});

Using the code above, if createdNewUser is true, you can (for example):

  • Add the user's ID and their info to your own database (in addition to it being stored in SuperTokens).
  • Send analytics events about a sign up.
  • Send a welcome email to the user.
  • You can associate a role to the user.
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Which UI do you use?
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