require "singleton"

module Jets::Api
  class Config
    include Singleton
    extend Memoist

    def initialize(options={})
      @options = options
      @config_path = "#{ENV['HOME']}/.jets/config.yml"
    end

    def token
      data['token'] || data['key'] # keep key for backwards compatibility
    end

    def data
      @data ||= load
    end

    # Ensure a Hash is returned
    def load
      return {} unless File.exist?(@config_path)

      data = YAML.load_file(@config_path)
      if data.is_a?(Hash)
        data
      else
        puts "WARN: #{@config_path} is not in the correct format. Loading an empty hash.".color(:yellow)
        {}
      end
    end

    def prompt
      puts <<~EOL
        You are about to configure your #{pretty_path(@config_path)}
        You can get a token from www.rubyonjets.com
      EOL
      print "Please provide your token: "
      $stdin.gets.strip
    end

    # interface method: do not remove
    def update_token(token=nil)
      token ||= prompt
      write(key: token) # specify keys to allow
    end

    def write(values={})
      data = load
      data.merge!(values.deep_stringify_keys)
      FileUtils.mkdir_p(File.dirname(@config_path))
      IO.write(@config_path, YAML.dump(data))
      puts "Updated #{pretty_path(@config_path)}"
    end

    def pretty_path(path)
      path.sub(ENV['HOME'], '~')
    end
  end
end