require 'faraday'
require 'getty_connect/version'

module GettyConnect
  module Config

    # GettyConnect endpoints
    # https://api.gettyimages.com/apis
    
    DEFAULT_API_VERSION = "v1"

    DEFAULT_CREATE_SESSION_ENDPOINT = 
      "#{DEFAULT_API_VERSION}/session/CreateSession"
    DEFAULT_RENEW_SESSION_ENDPOINT = 
      "#{DEFAULT_API_VERSION}/session/RenewSession"
    DEFAULT_SEARCH_ENDPOINT = "#{DEFAULT_API_VERSION}/search/SearchForImages"
    DEFAULT_IMAGE_DETAILS_ENDPOINT = 
      "#{DEFAULT_API_VERSION}/search/GetImageDetails"
    DEFAULT_DOWNLOAD_AUTH_ENDPOINT = 
      "#{DEFAULT_API_VERSION}/download/GetImageDownloadAuthorizations"
    DEFAULT_DOWNLOAD_REQUEST_ENDPOINT = 
      "#{DEFAULT_API_VERSION}/download/CreateDownloadRequest"
    DEFAULT_DOWNLOAD_LARGEST_ENDPOINT =
      "#{DEFAULT_API_VERSION}/download/GetLargestImageDownloadAuthorizations"

    DEFAULT_USER_AGENT = "GettyConnect Ruby Gem #{GettyConnect::VERSION}"

    # Authentication
    DEFAULT_SYSTEM_ID = "3131" # nil 
    DEFAULT_SYSTEM_PASSWORD = 
      "I7zZycelG4VxeG0lPJdVZCZwDI7zn4rUIJwUd7V/V+0=" # nil
    DEFAULT_API_USERNAME = "avos_api" # nil
    DEFAULT_API_PASSWORD = "S3p4PmAtkuppoKT" # nil 

    # An array of valid keys in the options hash 
    # when configuring a {GettyConnect::Client}
    VALID_OPTIONS_KEYS = [
      :create_session_endpoint,
      :renew_session_endpoint,
      :search_endpoint,
      :image_details_endpoint,
      :download_auth_endpoint,
      :download_request_endpoint,
      :download_largest_endpoint,
      :user_agent,
      :system_id,
      :system_password,
      :api_username,
      :api_password,
      :api_version
    ]

    attr_accessor(*VALID_OPTIONS_KEYS)
    
    # When this module is extended, set all configuration options 
    # to their default values
    def self.extended(base)
      base.reset
    end

    # Convenience method to allow configuration options to be set in a block
    def configure
      yield self
      self
    end

    def options
      VALID_OPTIONS_KEYS.inject({}){|o,k| o.merge!(k => send(k)) }
    end

    # Reset all configuration options to defaults
    def reset
      self.create_session_endpoint = DEFAULT_CREATE_SESSION_ENDPOINT
      self.renew_session_endpoint = DEFAULT_RENEW_SESSION_ENDPOINT
      self.search_endpoint = DEFAULT_SEARCH_ENDPOINT
      self.image_details_endpoint = DEFAULT_IMAGE_DETAILS_ENDPOINT
      self.download_auth_endpoint = DEFAULT_DOWNLOAD_AUTH_ENDPOINT
      self.download_request_endpoint = DEFAULT_DOWNLOAD_REQUEST_ENDPOINT
      self.download_largest_endpoint = DEFAULT_DOWNLOAD_LARGEST_ENDPOINT
      self.user_agent = DEFAULT_USER_AGENT
      self.system_id = DEFAULT_SYSTEM_ID
      self.system_password = DEFAULT_SYSTEM_PASSWORD
      self.api_username = DEFAULT_API_USERNAME
      self.api_password = DEFAULT_API_PASSWORD
      self.api_version = DEFAULT_API_VERSION
      self
    end
    
  end
end