/// hasura-jwt-claim

function (user, context, callback) {
  const namespace = "https://hasura.io/jwt/claims";

  context.idToken[namespace] = {
    "x-hasura-default-role": "user",

    "x-hasura-allowed-roles": ["user"],
    "x-hasura-user-id": user.user_id
  };

    context.accessToken[namespace] = {
    "x-hasura-default-role": "user",

    "x-hasura-allowed-roles": ["user"],
    "x-hasura-user-id": user.user_id
  };

  return callback(null, user, context);
}

/// function (user, context, callback) {
  const userId = user.user_id;
  const nickname = user.name;
  const picture = user.picture;

  const hasuraEnvironments = [
    {url: 'http://yourlocalinstance.com/v1/graphql', adminSecret: 'localhostadminkey'},
  ];

  const mutation = `mutation($userId: String!, $nickname: String, $picture: String) {
    insert_users(objects: [{
        id: $userId,
        name: $nickname,
        default_picture: $picture,
      }],
      on_conflict: {
        constraint: users_pkey,
        update_columns: [last_seen, name, default_picture]
      }) {
        affected_rows
      }
    }`;

  hasuraEnvironments.forEach(({url, adminSecret}) => {
    request.post(
      {
        headers: {
          "content-type": "application/json",
          "x-hasura-admin-secret": adminSecret
        },
        url: url,
        body: JSON.stringify({ query: mutation, variables: { userId, nickname, picture } })
      },
      (error, response, body) => {
        console.log(body);
        callback(error, user, context);
      }
    );
  });

  return callback(null, user, context);
}