Ruby Sinatra を使ってGoogle認証をする（実験編）

callback-oauth.txt

{
  "provider" => "google_oauth2",
  "uid" => "100000000000000000000",
  "info" => {
    "name" => "John Smith",
    "email" => "john@example.com",
    "first_name" => "John",
    "last_name" => "Smith",
    "image" => "https://lh4.googleusercontent.com/photo.jpg",
    "urls" => {
      "google" => "https://plus.google.com/+JohnSmith"
    }
  },
  "credentials" => {
    "token" => "TOKEN",
    "refresh_token" => "REFRESH_TOKEN",
    "expires_at" => 1496120719,
    "expires" => true
  },
  "extra" => {
    "id_token" => "ID_TOKEN",
    "id_info" => {
      "azp" => "APP_ID",
      "aud" => "APP_ID",
      "sub" => "100000000000000000000",
      "email" => "john@example.com",
      "email_verified" => true,
      "at_hash" => "HK6E_P6Dh8Y93mRNtsDB1Q",
      "iss" => "accounts.google.com",
      "iat" => 1496117119,
      "exp" => 1496120719
    },
  }
}