class Geocoder::EsriToken

def self.generate_token(client_id, client_secret, expires=1440)
  # creates a new token that will expire in 1 day by default
  getToken = Net::HTTP.post_form URI('https://www.arcgis.com/sharing/rest/oauth2/token'),
    f: 'json',
    client_id: client_id,
    client_secret: client_secret,
    grant_type: 'client_credentials',
    expiration: expires # (minutes) max: 20160, default: 1 day
  response = JSON.parse(getToken.body)
  if response['error']
    Geocoder.log(:warn, response['error'])
  else
    token_value = response['access_token']
    expires_at = Time.now + (expires * 60)
    new(token_value, expires_at)
  end
end

def active?
  @expires_at > Time.now
end

def initialize(value, expires_at)
  @value = value
  @expires_at = expires_at
end

def to_s
    @value
end