我目前正在使用NextAuth登录我的应用程序，并希望在用户已经登录的情况下向其中添加更多的作用域，以便我可以使用Google Fit API。
我一直在阅读NextAuth的文档并做了一些研究，但没有发现任何对当前NextAuth v4在此范围情况下有帮助的内容。
我当前的Google配置：

import NextAuth from 'next-auth';
import GoogleProvider from "next-auth/providers/google"

const GOOGLE_AUTHORIZATION_URL =
    'https://accounts.google.com/o/oauth2/v2/auth?' +
    new URLSearchParams({
        prompt: 'consent',
        access_type: 'offline',
        response_type: 'code'
    })

export default NextAuth({
    // Configure one or more authentication providers
    providers: [
        GoogleProvider({
            clientId: process.env.GOOGLE_CLIENT_ID,
            clientSecret: process.env.GOOGLE_CLIENT_SECRET,
            authorization: GOOGLE_AUTHORIZATION_URL,
        }),
  ],
callbacks: {
        async jwt({ token, user, account }) {
            // Initial sign in
            if (account && user) {
                return {
                    accessToken: account.access_token,
                    accessTokenExpires: Date.now() + account.expires_in * 1000,
                    refreshToken: account.refresh_token,
                    user
                }
            }

            // Return previous token if the access token has not expired yet
            if (Date.now() < token.accessTokenExpires) {
                return token
            }

            // Access token has expired, try to update it
            return refreshAccessToken(token)
        },
        async session({ session, token }) {
            session.user = token.user;
            session.accessToken = token.accessToken
            session.error = token.error
            return session
        }
    },
jwt: {
        secret: process.env.NEXTAUTH_JWT_SECRET,
    },
    secret: process.env.NEXTAUTH_SECRET,
})

async function refreshAccessToken(token) {
    try {
        const url =
            "https://oauth2.googleapis.com/token?" +
            new URLSearchParams({
                client_id: process.env.GOOGLE_CLIENT_ID,
                client_secret: process.env.GOOGLE_CLIENT_SECRET,
                grant_type: "refresh_token",
                refresh_token: token.refreshToken,
            })

        const response = await fetch(url, {
            headers: {
                "Content-Type": "application/x-www-form-urlencoded",
            },
            method: "POST",
        })

        const refreshedTokens = await response.json()

        if (!response.ok) {
            throw refreshedTokens
        }

        return {
            ...token,
            accessToken: refreshedTokens.access_token,
            accessTokenExpires: Date.now() + refreshedTokens.expires_at * 1000,
            refreshToken: refreshedTokens.refresh_token ?? token.refreshToken, // Fall back to old refresh token
        }
    } catch (error) {
        console.log(error)

        return {
            ...token,
            error: "RefreshAccessTokenError",
        }
    }
}

我目前的代码运行良好，所以我只需要授权和使用GoogleFitness API的作用域。