Helper functions for Auth0 to SuperTokens migration

helper.js

let auth0Domain = "https://yourdomain.com"
let userIdMappingFile = "/userDataMapping.json"


let doesUserExistInAuth0DataBase = async (email, password) => {

    let config = {
        method: "post",
        url: auth0Domain + "/oauth/token",
        headers: {
            'Accept': 'application/json',
            'Content-Type': 'application/json',
        },
        data: {
            client_id: "client id",// user app clientid
            grant_type: "password",
            username: email,
            password: password,
        }
    };

    try {
        let access_token = (await axios(config)).data.access_token;

        let userResponse = await axios.get(`${auth0Domain}/userInfo`, {
            headers: { "authorization": `Bearer ${access_token}` },
        })

        return userResponse.data

    } catch (error) {
        if (error.response.status === 400 || error.response.status === 403) {
            return undefined
        }
        throw error
    }
}

let mapUserData = (auth0UserId, STUserId) => {
    try {

        let userIdMappingString = fs.readFileSync(__dirname + userIdMappingFile)
        let userIdMapping = JSON.parse(userIdMappingString)
        userIdMapping = { ...userIdMapping, [auth0UserId]: STUserId }
        fs.writeFileSync(__dirname + userIdMappingFile, JSON.stringify(userIdMapping))

    } catch (error) {
        console.log(error)
    }
}

let getSTUserIdFromAuth0UserId = (Auth0UserId) => {
    try {
        let userIdMappingString = fs.readFileSync(__dirname + userIdMappingFile)
        let userIdMapping = JSON.parse(userIdMappingString)
        if (userIdMapping[Auth0UserId] === undefined) {
            return Auth0UserId
        } else {

            return userIdMapping[Auth0UserId]
        }
    } catch (error) {
        return Auth0UserId
    }
}

let getAuth0UserIdFromSTUserId = (STUserId) => {
    try {
        let userIdMappingString = fs.readFileSync(__dirname + userIdMappingFile)
        let userIdMapping = JSON.parse(userIdMappingString)
        let keys = Object.keys(userIdMapping)
        for (let i = 0; i < keys.length; i++) {
            if (userIdMapping[keys[i]] === STUserId) {
                return keys[i]
            }
        }
        return STUserId
    } catch (error) {
        return STUserId
    }
}

async function doesThirdPartyUserIdExistInAuth0Database(userId) {

    let config = {
        method: 'POST',
        url: `${auth0Domain}/oauth/token`,
        headers: { 'content-type': 'application/json' },
        data: '{"client_id":"sample_client_id","client_secret":"sample_client_secret","audience":"https://yourdomain/api/v2/","grant_type":"client_credentials"}'
    };

    try {
        let access_token = (await axios(config)).data.access_token
        let conf = {
            method: 'GET',
            url: `${auth0Domain}/api/v2/users`,
            params: { q: `identities.user_id:"${userId}"` },
            headers: { authorization: `Bearer ${access_token}` }
        };

        let response = await axios(conf)
        return response.data[0].user_id

    } catch (error) {
        return undefined
    }

}

module.exports = { doesUserExistInAuth0DataBase, mapUserData, getSTUserIdFromAuth0UserId, getAuth0UserIdFromSTUserId, doesThirdPartyUserIdExistInAuth0 }