require 'highline/import'
require "interact"
require 'paint'
require 'fileutils'

module App42
  module Command
    class User

      include App42::Command::UserToken
      include App42::Base::Util
      include Interactive

      # @return
      # dup argument to get a non-frozen string
      def initialize(options={} )
        @options = options.dup 
      end

      # list local api and secret key
      def keys
        if check_key_file?
          puts message "#{Message::KEYS}", false, 'green'
          api_key, secret_key = get_keys 
          puts "API Key      = #{api_key}"
          puts "Secret Key   = #{secret_key}"
        else
          message "#{Message::KEYS_NOT_FIND}", true, 'red'
          # TODO, should be dynamic
          App42::Base::Help.addkeys
        end

      end

      # clear local credentials
      def clear
        if App42::Command::Auth.logged_in? then
          begin
            ans = ask "Do you want to delete existing keys?", :default => true
            print_new_line
            if ans == true
              key_file = remove_key_file
              puts message "#{Message::KEYS_CLEARED}", false, 'green'
            else
              exit!
            end
          rescue
            message "#{Message::SOMETHING_WRONG}", false, 'red'
          end
        else
          puts message "#{Message::KEYS_NOT_FIND}", false, 'red'
        end
      end

      # Configure app42 credentials
      def add
        update_key if App42::Command::Auth.logged_in?
        api_key, secret_key = collect_app42_credentials
        if is_api_key_valid? api_key, secret_key
          configure_app42 api_key, secret_key
          print Paint["Adding keys...", :yellow]
          puts Paint["done", :green]
        else
          puts Paint["#{Message::WRONG_KEY}", :red]
          remove_key_file
          print_new_line
          exit!  
        end
      end

      # update existing key
      def update_key
        puts message "#{Message::KEYS_EXIST}", false, 'red'
        ans = ask "\nDo you want to update existing keys?", :default => true
        print_new_line
        ans == true ? (return) : (exit!)
      end

      def is_api_key_valid? api_key, secret_key #:nodoc:
        key_validate_params =  {
            'apiKey'=> api_key,
            'version' => VERSION,
            'timeStamp' => Time.now.utc.strftime("%Y-%m-%dT%H:%M:%S.%LZ")
        }
        api_key_valid = validate_api_and_secret_key key_validate_params, 'info', 'authenticate', secret_key
        return api_key_valid['success']
      end

      # validate api and secret key 
      def validate_api_and_secret_key query_params, resource, action, secret_key
        url = resource_url(resource, action)
        sign = App42::Client::RestUtil.new.sign(secret_key, query_params )
        response = App42::Client::App42RestClient.new.get(sign, url, query_params)
      end

      # collect keys for keys:add
      # Get api key
      # Get secret key
      def collect_app42_credentials
        api_key = @options[:api] if @options[:api]
        secret_key = @options[:secret] if @options[:secret]
        message '=== Enter your App42PaaS keys ===', true, 'blue' if api_key.nil? && secret_key.nil?
        api_key = get_api_key if api_key.nil?
        secret_key = get_secret_key if secret_key.nil?
        return api_key, secret_key
      end

      # collect api key from client
      def get_api_key(prompt = Paint["Enter API Key:", :bright])
        api_key = @options[:api_key] if @options[:api_key]
        api_key = ask(prompt) {|q| q.echo = true} if api_key.nil?
        return api_key.strip
      end

      # collect secret key from client
      def get_secret_key(prompt = Paint["Enter Secret Key:", :bright])
        secret_key = @options[:secret_key] if @options[:secret_key]
        secret_key = ask(prompt) {|q| q.echo = true} if secret_key.nil?
        return secret_key.strip
      end

      private

      # make sure, have configuration file
      # configure api and secrete key
      def configure_app42 api_key, secret_key
        if api_key && secret_key
          begin
            ensure_config_dir
            local_app42_key api_key, secret_key
          rescue Exception => e
            puts e
          end
        end
      end

    end
  end
end