module Itrigga
  module AdminApiClient
    include Trigga::ParamFu
    include Itrigga::AdminApiClient::Proxies::Admin
    include Itrigga::AdminApiClient::Proxies::Api
    include Itrigga::AdminApiClient::Proxies::SearchTracker
    
    private
    
    def self.make_call(module_name, endpoint, opts = {})
      require_param(opts, :api_key)
      
      host = make_absolute_url( opts[:host] || TRIGGA_ADMIN_API_CLIENT_CONFIG[module_name].base_url )
      
      begin
        url = build_url(host,endpoint,opts) 
        Itrigga.add_log_line("[API Client] - #{url}")
        
        response = JSON.parse(Itrigga::NetHelper.do_get(url))
        ::Hashie::Mash.new(response.kind_of?(Array) ? default_response : response.merge(default_response) )
        
      rescue Exception => e
         Itrigga.add_log_line "[API Client Error] - #{e.message}\n#{e.backtrace.join('\n')}" if RAILS_ENV == "development"
         ::Hashie::Mash.new(:error => e.message, :status_code => status_code_from_error(e.message))
      end 
    end
    
    def self.default_response
      {:status_code => 200}
    end
    
    def self.make_endpoint_absolute(endpoint)
      endpoint.to_s.match(/^\/{1}.*/) ? endpoint : "/#{endpoint}"
    end
    
    def self.make_absolute_url(url)
      url.to_s.match(/^https?:\/\//) ? url : "http://#{url}"
    end
    
    def self.build_url(url, endpoint, h = {})
      # default format to json
      format = h[:format] || "json"
      h.delete :format
      
      params = h.map { |k, v| "#{k}=#{v}" }.join("&")
      "#{url}#{make_endpoint_absolute(endpoint)}.#{format}#{params.empty? ? '' : '?' + params}"
    end    
    
    # get the status code from the error message
    # eg "404 Not Found"
    def self.status_code_from_error(error)
      code = error.match(/^(\d{3} )/)
      if code
        code.to_s.to_i
      else 
        0
      end
    end
    
  end
  
  # ==============================================================================================================================
  # Prints a debugging info line into the log...
  # ==============================================================================================================================
  
  def self.add_log_line(line, add_padding = false)
    is_terminal = false
    begin
      @terminal_width ||= `stty size`.split.map { |x| x.to_i }.reverse[0]
      is_terminal = true
    rescue Exception => e
      # not running in terminal``
    end
    
    if add_padding and is_terminal and !@terminal_width.nil?
      puts  "#{line.ljust(@terminal_width - line.length, "=")}\n"
    else
      if defined?(Rails.logger)
        Rails.logger.info line
      else
        puts line
      end
    end
  end
  
end