require 'rubygems'
require 'pathname'
$LOAD_PATH << Pathname(__FILE__).dirname.parent.expand_path + 'lib'
require 'rack_datamapper'
require 'dm-core/version'
require 'dm-migrations'
require 'dm-transactions'

def load_driver(name, default_uri)
  return false if ENV['ADAPTER'] != name.to_s

  begin
    DataMapper.setup(name, ENV["#{name.to_s.upcase}_SPEC_URI"] || default_uri)
    DataMapper::Repository.adapters[:default] =  DataMapper::Repository.adapters[name]
    true
  rescue LoadError => e
    p e.backtrace
    warn "Could not load do_#{name}: #{e}"
    false
  end
end

ENV['ADAPTER'] ||= 'sqlite3'

unless defined? HAS_SQLITE3
  HAS_SQLITE3  = load_driver(:sqlite3,  'sqlite3::memory:')
  HAS_MYSQL    = load_driver(:mysql,    'mysql://localhost/dm_core_test')
  HAS_POSTGRES = load_driver(:postgres, 'postgres://postgres@localhost/dm_core_test')
end