require File.expand_path('../../../../load_paths', __FILE__)

lib = File.expand_path("#{File.dirname(__FILE__)}/../../lib")
$:.unshift(lib) unless $:.include?('lib') || $:.include?(lib)

require 'config'

require 'test/unit'
require 'stringio'
require 'mocha'

require 'active_record'
require 'active_support/dependencies'
require 'connection'

# Show backtraces for deprecated behavior for quicker cleanup.
ActiveSupport::Deprecation.debug = true

# Quote "type" if it's a reserved word for the current connection.
QUOTED_TYPE = ActiveRecord::Base.connection.quote_column_name('type')

def current_adapter?(*types)
  types.any? do |type|
    ActiveRecord::ConnectionAdapters.const_defined?(type) &&
      ActiveRecord::Base.connection.is_a?(ActiveRecord::ConnectionAdapters.const_get(type))
  end
end

def in_memory_db?
  current_adapter?(:SQLiteAdapter) &&
  ActiveRecord::Base.connection_pool.spec.config[:database] == ":memory:"
end

def supports_savepoints?
  ActiveRecord::Base.connection.supports_savepoints?
end

def with_env_tz(new_tz = 'US/Eastern')
  old_tz, ENV['TZ'] = ENV['TZ'], new_tz
  yield
ensure
  old_tz ? ENV['TZ'] = old_tz : ENV.delete('TZ')
end

def with_active_record_default_timezone(zone)
  old_zone, ActiveRecord::Base.default_timezone = ActiveRecord::Base.default_timezone, zone
  yield
ensure
  ActiveRecord::Base.default_timezone = old_zone
end

ActiveRecord::Base.connection.class.class_eval do
  IGNORED_SQL = [/^PRAGMA/, /^SELECT currval/, /^SELECT CAST/, /^SELECT @@IDENTITY/, /^SELECT @@ROWCOUNT/, /^SAVEPOINT/, /^ROLLBACK TO SAVEPOINT/, /^RELEASE SAVEPOINT/, /SHOW FIELDS/]

  # FIXME: this needs to be refactored so specific database can add their own
  # ignored SQL.  This ignored SQL is for Oracle.
  IGNORED_SQL.concat [/^select .*nextval/i, /^SAVEPOINT/, /^ROLLBACK TO/, /^\s*select .* from ((all|user)_tab_columns|(all|user)_triggers|(all|user)_constraints)/im]

  def execute_with_query_record(sql, name = nil, &block)
    $queries_executed ||= []
    $queries_executed << sql unless IGNORED_SQL.any? { |r| sql =~ r }
    execute_without_query_record(sql, name, &block)
  end

  alias_method_chain :execute, :query_record

  def exec_query_with_query_record(sql, name = nil, binds = [], &block)
    $queries_executed ||= []
    $queries_executed << sql unless IGNORED_SQL.any? { |r| sql =~ r }
    exec_query_without_query_record(sql, name, binds, &block)
  end

  alias_method_chain :exec_query, :query_record
end

ActiveRecord::Base.connection.class.class_eval {
  attr_accessor :column_calls

  def columns_with_calls(*args)
    @column_calls ||= 0
    @column_calls += 1
    columns_without_calls(*args)
  end

  alias_method_chain :columns, :calls
}

unless ENV['FIXTURE_DEBUG']
  module ActiveRecord::TestFixtures::ClassMethods
    def try_to_load_dependency_with_silence(*args)
      ActiveRecord::Base.logger.silence { try_to_load_dependency_without_silence(*args)}
    end

    alias_method_chain :try_to_load_dependency, :silence
  end
end

require "cases/validations_repair_helper"
class ActiveSupport::TestCase
  include ActiveRecord::TestFixtures
  include ActiveRecord::ValidationsRepairHelper

  self.fixture_path = FIXTURES_ROOT
  self.use_instantiated_fixtures  = false
  self.use_transactional_fixtures = true

  def create_fixtures(*table_names, &block)
    Fixtures.create_fixtures(ActiveSupport::TestCase.fixture_path, table_names, {}, &block)
  end
end

def load_schema
  # silence verbose schema loading
  original_stdout = $stdout
  $stdout = StringIO.new

  adapter_name = ActiveRecord::Base.connection.adapter_name.downcase
  adapter_specific_schema_file = SCHEMA_ROOT + "/#{adapter_name}_specific_schema.rb"

  load SCHEMA_ROOT + "/schema.rb"

  if File.exists?(adapter_specific_schema_file)
    load adapter_specific_schema_file
  end
ensure
  $stdout = original_stdout
end

load_schema

class << Time
  unless method_defined? :now_before_time_travel
    alias_method :now_before_time_travel, :now
  end

  def now
    (@now ||= nil) || now_before_time_travel
  end

  def travel_to(time, &block)
    @now = time
    block.call
  ensure
    @now = nil
  end
end