module Whydoiwork

# File lib/whydoiwork.rb, line 34
def self.config
  @config ||= YAML.load_file(config_file_name)
end

# File lib/whydoiwork.rb, line 38
def self.config_file_exists?
  File.exists?(config_file_name)
end

# File lib/whydoiwork.rb, line 42
def self.config_file_name
  File.expand_path("~/.whydoiwork.yml")
end

# File lib/whydoiwork.rb, line 46
  def self.config_sample
    <<-YAML
harvest:
  subdomain:
  username:
  password:
rate:
expenses:
  rent: 800
  food: 1000
  car:  250
    YAML
  end

# File lib/whydoiwork.rb, line 66
def self.harvest
  @harvest ||= Harvest.client(config["harvest"]["subdomain"], config["harvest"]["username"], config["harvest"]["password"])
end

# File lib/whydoiwork.rb, line 9
def self.run
  unless config_file_exists?
    puts "Config file #{config_file_name} created."
    File.write(config_file_name, config_sample)
    exit 1
  end

  money = (total_time_from_harvest * config["rate"]).round

  config["expenses"].each_pair do |name, cost|
    if money > cost
      puts "#{name} (#{cost})… done"
    elsif money > 0
      puts "#{name} (#{cost})… earning right now"
    else
      puts "#{name} (#{cost})"
    end
    money -= cost
  end

  if money > 0
    puts "Free to spend: #{money}"
  end
end

# File lib/whydoiwork.rb, line 60
def self.total_time_from_harvest
  user_id = harvest.account.who_am_i.id
  time_entries = harvest.reports.time_by_user(user_id, Date.today.beginning_of_month, Date.today.end_of_month)
  time_entries.map(&:hours).inject(0, &:+)
end