# This class parses the hourly rate for each employee found in the csv.
# The first time it ask the user what the price is and saved it to a yml file with all the information needed
# This information is retrieved
require 'yaml'
class HourlyRate

  def initialize(csv)
    # Read users from file
    @config_file = "#{ENV['HOME']}/.twstats_users.yml"
    @users = csv.people
    @config = {}
    if File.exists? @config_file
      @config = YAML.load(File.read(@config_file))
    end
    # Set value of 0 to users that do not exist
    csv.people.each do |user|
      if @config[user].nil?
        @config[user] = 0
      end
    end
  end

  def get_price(user,hours)
    # Get a given price for a given user
  end

  def set_price(user,price)
    @config[user] = price.round(2)
  end

  def save
    file = File.new(@config_file,'w')
    file.write YAML.dump(@config)
    file.close
  end

  def get_billed_time(users_hours)
    # It expects a hash with the amount of hours billed per user
    users_hours.keys.inject(0) do |sum, user|
      sum + @config[user]*users_hours[user]
    end
  end

  def set_user_hourly_rate(prompt)
    menu = @users.map{ |user| ["#{user} (#{@config[user].round(2)} €)", user]}.to_h
    menu['Quit'] = -1
    loop do
      chosen = prompt.select 'What user you want to modify? Select Quit to finish.', menu
      break if chosen == -1
      price = prompt.ask "What is the hourly rate for #{chosen}?", convert: :float
      puts price, chosen
      @config[chosen] = price
      menu = @users.map{ |user| ["#{user} (#{@config[user].round(2)} €)", user]}.to_h
      menu['Quit'] = -1
    end
    save
  end
end