# fix koala so it doesn't segfault. weird issue
require 'koala'
Koala.http_service = Koala::NetHTTPService

# setup database and session crap from config
$conf = YAML.load File.read("./conf.yml")
ActiveRecord::Base.establish_connection $conf['db']
configure(:development) do
  require 'logger'
  ActiveRecord::Base.logger = Logger.new(STDOUT)
end
enable :sessions
set :session_secret, $conf["session_secret"]

# setup activemerchant
require 'activemerchant'
ActiveMerchant::Billing::Base.mode = :test
ActiveMerchant::Billing::PaypalExpressGateway.default_currency = $conf['paypal']['currency']

# setup money
require 'money'
class ActiveRecord::Base
  def self.has_money(*syms)
    syms.each do |sym|
      composed_of(sym,
        :class_name => "Money",
        :mapping => [%w(cents cent), %w(currency currency_as_string)],
        :constructor => Proc.new { |cents, currency| Money.new(cents || 0, currency || Money.default_currency) },
        :converter => Proc.new { |value| value.respond_to?(:to_money) ? value.to_money : raise(ArgumentError, "Can't convert #{value.class} to Money") })
    end
  end
end

# setup erubis with automatic html escaping
require 'erubis'
Tilt.register :erb, Tilt[:erubis]
set :erb, :escape_html => true

# filters
before do
  @user = User.find session[:uid] if session[:uid]
end

# helpers
helpers do
  def relative_time(start_time)
    diff_seconds = (Time.now - start_time).to_i
    case diff_seconds
      when 0 .. 59
        "#{diff_seconds} second#{diff_seconds != 1 ? "s" : ""} ago"
      when 60 .. (3600-1)
        "#{diff_seconds/60} minute#{diff_seconds/60 != 1 ? "s" : ""} ago"
      when 3600 .. (3600*24-1)
        "#{diff_seconds/3600} hour#{diff_seconds/3600 != 1 ? "s" : ""} ago"
      when (3600*24) .. (3600*24*30)
        "#{diff_seconds/(3600*24)} day#{diff_seconds/(3600*24) != 1 ? "s" : ""} ago"
      else
        start_time.strftime("%d/%m/%Y")
    end
  end

  def nl2br(text)
    text.gsub("\n", "<br />\n")
  end
end

# convenience methods
def view(view, page = view)
  @page = page
  erb view
end

def logged_in!(where_to = "/")
  unless @user
    redirect where_to
    halt
  end
end

def admin!(where_to = "/")
  unless @user and @user.admin
    redirect where_to
    halt
  end
end

def paypal
  @paypal ||= ActiveMerchant::Billing::PaypalExpressGateway.new(
    :login => $conf['paypal']['login'],
    :password => $conf['paypal']['password'],
    :signature => $conf['paypal']['signature']
  )
end