Class: EphemeralCalc::GoogleAPI::OAuth

Inherits:
Object
  • Object
show all
Defined in:
lib/ephemeral_calc/google_api/oauth.rb

Constant Summary collapse

SCOPES = 
[
  "https://www.googleapis.com/auth/userlocation.beacon.registry",
  "https://www.googleapis.com/auth/cloud-platform",
]
REDIRECT_URI = 
"urn:ietf:wg:oauth:2.0:oob"
TOKEN_URI = 
URI("https://www.googleapis.com/oauth2/v4/token")

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(client_id = , secret = ) ⇒ OAuth

Returns a new instance of OAuth.



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# File 'lib/ephemeral_calc/google_api/oauth.rb', line 19

def initialize(client_id = ENV["GOOGLE_CLIENT_ID"], secret = ENV["GOOGLE_CLIENT_SECRET"])
  if client_id.nil? || secret.nil?
    raise ArgumentError, "No Google Client ID or Secret was set. These can set in the environment variables \"GOOGLE_CLIENT_ID\" and \"GOOGLE_CLIENT_SECRET\" respectively. Credentials must be created for your project at \"https://console.developers.google.com/apis/credentials\"."
  end
  self.client_id = client_id
  self.secret = secret
end

Instance Attribute Details

#client_id ⇒ Object

Returns the value of attribute client_id.



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# File 'lib/ephemeral_calc/google_api/oauth.rb', line 17

def client_id
  @client_id
end

#secret ⇒ Object

Returns the value of attribute secret.



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# File 'lib/ephemeral_calc/google_api/oauth.rb', line 17

def secret
  @secret
end

Instance Method Details

#get_code ⇒ Object 



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# File 'lib/ephemeral_calc/google_api/oauth.rb', line 27

def get_code
  puts("Performing OAuth with Google...")
  if RUBY_PLATFORM =~ /darwin/
    system("open \"#{url}\"")
  else
    puts("Open this URL in your browser: \"#{url}\"\n\n")
  end
  printf "Copy and paste code from web browser here: "
  _code = STDIN.gets.chomp
end

#get_credentials(old_credentials = Credentials.from_file) ⇒ Object 



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# File 'lib/ephemeral_calc/google_api/oauth.rb', line 38

def get_credentials(old_credentials = Credentials.from_file)
  return old_credentials if old_credentials && !old_credentials.expired?
  response = Request.post(TOKEN_URI) {|request|
    request.body = hash_to_params( token_request_params(old_credentials) )
  }
  json = JSON.parse(response.body)
  credentials = Credentials.new(json)
  if old_credentials
    credentials.refresh_token = old_credentials.refresh_token
  end
  return credentials
end

#hash_to_params(hash) ⇒ Object 



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# File 'lib/ephemeral_calc/google_api/oauth.rb', line 81

def hash_to_params(hash)
  hash.map {|k,v| "#{k}=#{v}"}.join("&")
end

#token_request_params(old_credentials) ⇒ Object 



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# File 'lib/ephemeral_calc/google_api/oauth.rb', line 61

def token_request_params(old_credentials)
  if old_credentials == nil
    {
      code: get_code,
      client_id: client_id,
      client_secret: secret,
      redirect_uri: REDIRECT_URI,
      grant_type: "authorization_code",
    }
  else
    # this is a refresh of the old credentials
    {
      refresh_token: old_credentials.refresh_token,
      client_id: client_id,
      client_secret: secret,
      grant_type: "refresh_token",
    }
  end
end

#url ⇒ Object 



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# File 'lib/ephemeral_calc/google_api/oauth.rb', line 51

def url
  params = hash_to_params(
    scope: SCOPES.join("%20"),
    redirect_uri: REDIRECT_URI,
    response_type: "code",
    client_id: client_id,
  )
  "https://accounts.google.com/o/oauth2/v2/auth?#{params}"
end