require "catchex/version"

module CatchEx
  require 'socket'
  require "net/http"
  require "rake"

  @@CATCH_EX_URL = "http://www.catchex.com"
  @@DATA_PUSH_URL = @@CATCH_EX_URL + "/ex"
  @@PLUGIN_VERSION = "1.0"
  @@LANGUAGE = "Ruby"

  class Config
    @@project_key = ""
    @@scenario = ""
    @@excepted = [ActionController::RoutingError]

    def self.project_key(project_key = nil)
      unless project_key.nil?
        @@project_key = project_key
      else
        return @@project_key
      end
    end

    def self.scenario(scenario = nil)
      unless scenario.nil?
        @@scenario = scenario
      else
        return @@scenario
      end
    end
  end

  class << self

    def configure
      yield Config
    end

    # Fetch the local IP address for the hosts
    def local_ip
      orig = Socket.do_not_reverse_lookup
      Socket.do_not_reverse_lookup =true # turn off reverse DNS resolution temporarily
      UDPSocket.open do |s|
        s.connect 'www.catchex.com', 1
        s.addr.last
      end
    ensure
      Socket.do_not_reverse_lookup = orig
    end

    # The catch_ex is a convenient method for posting exception.
    def catch(exception, from = "", url = "", params = {})
      return if Config.project_key.blank? || Config.scenario.blank? || @@excepted.include?(exception.class)
      begin
        Net::HTTP.post_form(URI.parse(@@DATA_PUSH_URL), {:version => @@PLUGIN_VERSION, :language => @@LANGUAGE,
            :project_key => Config.project_key, :local_ip => local_ip, :message => exception.message, :scenario => Config.scenario,
            :backtrace =>  exception.backtrace.join("\n"), :from => from, :url => url, :params => params.inspect})
      rescue
      end
    end
  end

  module ActionControllerExt
    def self.included(base) #:nodoc:
      base.send :include, InstanceMethods
    end

    module InstanceMethods
      def rescue_action(exception)
        catch_ex(exception)
        super
      end

      # Instance method for posting the customized exception.
      def catch_ex(exception)
        CatchEx.catch(exception, request.remote_ip, request.url, params) if ENV['RAILS_ENV'] == 'production'
      end
    end
  end

  module ActionViewExt
    def catchex_js
      javascript_include_tag URI.encode("http://www.catchex.com/apps/ce?porject_key=#{Config.prject_key}&scenario=#{Config.scenario}")
    end
  end
end

ActionController::Base.send :include, CatchEx::ActionControllerExt if defined? ActionController::Base
ActionView::Base.send :include, CatchEx::ActionViewExt if defined? ActionView::Base