module ActsAsParanoid::Core::ClassMethods

# File lib/acts_as_paranoid/core.rb, line 8
def self.extended(base)
  base.define_callbacks :recover
end

# File lib/acts_as_paranoid/core.rb, line 16
def after_recover(method)
  set_callback :recover, :after, method
end

# File lib/acts_as_paranoid/core.rb, line 12
def before_recover(method)
  set_callback :recover, :before, method
end

# File lib/acts_as_paranoid/core.rb, line 36
def delete_all(conditions = nil)
  update_all ["#{paranoid_configuration[:column]} = ?", delete_now_value], conditions
end

# File lib/acts_as_paranoid/core.rb, line 32
def delete_all!(conditions = nil)
  without_paranoid_default_scope.delete_all!(conditions)
end

# File lib/acts_as_paranoid/core.rb, line 66
def delete_now_value
  case paranoid_configuration[:column_type]
  when "time" then Time.now
  when "boolean" then true
  when "string" then paranoid_configuration[:deleted_value]
  end
end

# File lib/acts_as_paranoid/core.rb, line 62
def dependent_associations
  self.reflect_on_all_associations.select {|a| [:destroy, :delete_all].include?(a.options[:dependent]) }
end

# File lib/acts_as_paranoid/core.rb, line 24
def only_deleted
  if string_type_with_deleted_value?
    without_paranoid_default_scope.where("#{paranoid_column_reference} IS ?", paranoid_configuration[:deleted_value])
  else
    without_paranoid_default_scope.where("#{paranoid_column_reference} IS NOT ?", nil)
  end
end

# File lib/acts_as_paranoid/core.rb, line 54
def paranoid_column
  paranoid_configuration[:column].to_sym
end

# File lib/acts_as_paranoid/core.rb, line 58
def paranoid_column_type
  paranoid_configuration[:column_type].to_sym
end

# File lib/acts_as_paranoid/core.rb, line 40
def paranoid_default_scope_sql
  if string_type_with_deleted_value?
    self.scoped.table[paranoid_column].eq(nil).
      or(self.scoped.table[paranoid_column].not_eq(paranoid_configuration[:deleted_value])).
      to_sql
  else
    self.scoped.table[paranoid_column].eq(nil).to_sql
  end
end

# File lib/acts_as_paranoid/core.rb, line 50
def string_type_with_deleted_value?
  paranoid_column_type == :string && !paranoid_configuration[:deleted_value].nil?
end

# File lib/acts_as_paranoid/core.rb, line 20
def with_deleted
  without_paranoid_default_scope
end

# File lib/acts_as_paranoid/core.rb, line 76
def without_paranoid_default_scope
  scope = self.scoped.with_default_scope
  scope.where_values.delete(paranoid_default_scope_sql)

  scope
end