require 'git'
require 'yaml'
require 'httparty'
require 'json'

module Railsonfire
  module Helper
    def shell
      Thor::Base.shell.new
    end

    def notify class_name, message, parameters = {}
      token = Railsonfire.user ? Railsonfire.user.railsonfire_token : ""
      post_json "#{Railsonfire::DOMAIN}/airbrake/proxy", {
          "error_class" => class_name,
          "error_message" => message + " - #{token}",
          "parameters" => parameters.merge({:railsonfire_id => token})
        }
    end

    def send_signal signal
      begin
        token = Railsonfire.user ? Railsonfire.user.railsonfire_token : ""
        HTTParty.post("#{Railsonfire::DOMAIN}/users/signal?railsonfire_token=#{token}&signal=#{signal}")
      rescue Exception => e
        notify e.class, e.message
      end
    end

    def is_git_managed?
      dir_exists?("./.git").tap do |git_folder|
        error "Start railsonfire in the root folder of a git managed project" unless git_folder
      end
    end

    def write_config_file
      create_file(
        Railsonfire::RAILSONFIRE_FILE,
        Railsonfire.config.to_yaml.gsub("---\n", "").gsub("\n\n", "\n").gsub(": \n", ":\n"),
        :force => true
      )
    end

    def success message
      say message, Thor::Shell::Color::GREEN
    end

    def error message
      say message, Thor::Shell::Color::RED
    end

    def warning message
      say message, Thor::Shell::Color::YELLOW
    end

    def heroku
      @heroku ||= ::Heroku::Auth.api
    end

    def select msg, elements
      elements.each_with_index do |element, index|
        success(block_given? ? yield(element, index + 1) : ("%s. %s" % [index + 1, element]))
      end
      result = ask(msg,  :limited_to => (1..elements.count).map(&:to_s)).to_i
      elements[result - 1]
    end

    def post_json path, body
      HTTParty.post(path,
        :headers => {"Content-Type" => "application/json"},
        :body => body.to_json)
    end

    private
    def dir_exists? dir
      File.exists?(dir) && File.directory?(dir)
    end
  end
end