Function oauth2

A basic handler for OAuth2, except the user does most of the work.

Returns

An auth handler.

Example

Github example (will not work without full setup)

const clientId = "<CLIENT_ID>";
const clientSecret = "<CLIENT_ID>";
authentication.addAuth(
   "github",
   oauth2({
       oauth2Handler: async (req) => {
           const { data: at_data } = await axios({
               url: `https://github.com/login/oauth/access_token?client_id=${clientId}&client_secret=${clientSecret}&code=${req.query.code}`,
               method: "POST",
               headers: { Accept: "application/json" },
           });
           const profile = await axios.get("https://api.github.com/user", {
               headers: {
                   Authorization: "token " + at_data.access_token,
                   Accept: "application/vnd.github+json",
               },
           });
           return {
               username: profile.data.login,
               bio: profile.data.bio,
               photos: [
                   {
                       value:
                           "https://github.com/" + profile.data.login + ".png",
                   },
               ],
               _raw: profile.data,
           };
       },
       oauth2AccountHandler: async (profile, req) => {
           // Handle either sign in or sign up here.
           // profile is what was returned from oauth2Handler.
       },
   })
);

app.get("/oauth/github", (req, res) => {
   res.redirect(
       `https://github.com/login/oauth/authorize?client_id=${clientId}&redirect_uri=http://localhost:3000/oauth/github/redirect`
   );
});

app.get(
   "/oauth/github/redirect",
   authentication.authenticate("github"),
   function (req, res) {
       res.redirect("/");
   }
);