require 'spec_helper'

class CallbackRecorderWithNoRequiredProperties
  include CouchPotato::Persistence

  property :required_property

  [:before_validation, :before_validation_on_create,
    :before_validation_on_save, :before_validation_on_update,
    :before_save, :before_create, :before_create,
    :after_save, :after_create, :after_create,
    :before_update, :after_update,
    :before_destroy, :after_destroy
  ].each do |callback|
    define_method callback do
      callbacks << callback
    end
    self.send callback, callback
  end

  view :all, :key  => :required_property

  def callbacks
    @callbacks ||= []
  end

  private

  def method_callback_with_argument(db)
    db.view CallbackRecorder.all
  end

end

class CallbackRecorder < CallbackRecorderWithNoRequiredProperties
  validates_presence_of :required_property
end

describe "multiple callbacks at once" do

  class Monkey
    include CouchPotato::Persistence
    attr_accessor :eaten_banana, :eaten_apple

    before_create :eat_apple, :eat_banana

    private

    def eat_banana
      self.eaten_banana = true
    end

    def eat_apple
      self.eaten_apple = true
    end
  end

  it "should run all callback methods given to the callback method call" do
    monkey = Monkey.new
    monkey.run_callbacks :create
    expect(monkey.eaten_banana).to be_truthy
    expect(monkey.eaten_apple).to be_truthy
  end
end

describe 'create callbacks' do

  before(:each) do
    @recorder = CallbackRecorder.new
    couchrest_database = double 'couchrest_database', :save_doc => {'id' => '1', 'rev' => '2'}, :view => {'rows' => []}, :info => nil
    @db = CouchPotato::Database.new(couchrest_database)
  end

  describe "successful create" do
    before(:each) do
       @recorder.required_property = 1
    end

    it "should call before_validation" do
      @recorder.valid?
      expect(@recorder.callbacks).to include(:before_validation)
    end

    it "should call before_validation_on_create" do
      @db.save_document! @recorder
      expect(@recorder.callbacks).to include(:before_validation_on_create)
    end

    it "should call before_validation_on_save" do
      @db.save_document! @recorder
      expect(@recorder.callbacks).to include(:before_validation_on_save)
    end

    it "should call before_save" do
      @db.save_document! @recorder
      expect(@recorder.callbacks).to include(:before_save)
    end

    it "should call after_save" do
      @db.save_document! @recorder
      expect(@recorder.callbacks).to include(:after_save)
    end

    it "should call before_create" do
      @db.save_document! @recorder
      expect(@recorder.callbacks).to include(:before_create)
    end

    it "should call after_create" do
      @db.save_document! @recorder
      expect(@recorder.callbacks).to include(:after_create)
    end
  end

  describe "successful create with no changes (object not dirty)" do
    before(:each) do
       @recorder = CallbackRecorderWithNoRequiredProperties.new
    end

    it "should call before_validation" do
      @recorder.valid?
      expect(@recorder.callbacks).to include(:before_validation)
    end

    it "should call before_validation_on_create" do
      @db.save_document! @recorder
      expect(@recorder.callbacks).to include(:before_validation_on_create)
    end

    it "should call before_validation_on_save" do
      @db.save_document! @recorder
      expect(@recorder.callbacks).to include(:before_validation_on_save)
    end

    it "should call before_save" do
      @db.save_document! @recorder
      expect(@recorder.callbacks).to include(:before_save)
    end

    it "should call after_save" do
      @db.save_document! @recorder
      expect(@recorder.callbacks).to include(:after_save)
    end

    it "should call before_create" do
      @db.save_document! @recorder
      expect(@recorder.callbacks).to include(:before_create)
    end

    it "should call after_create" do
      @db.save_document! @recorder
      expect(@recorder.callbacks).to include(:after_create)
    end

  end

  describe "failed create" do

    it "should call before_validation" do
      @recorder.valid?
      expect(@recorder.callbacks).to include(:before_validation)
    end

    it "should call before_validation_on_create" do
      @db.save_document @recorder
      expect(@recorder.callbacks).to include(:before_validation_on_create)
    end

    it "should call before_validation_on_save" do
      @db.save_document @recorder
      expect(@recorder.callbacks).to include(:before_validation_on_save)
    end

    it "should not call before_save" do
      @db.save_document @recorder
      expect(@recorder.callbacks).not_to include(:before_save)
    end

    it "should not call after_save" do
      @db.save_document @recorder
      expect(@recorder.callbacks).not_to include(:after_save)
    end

    it "should not call before_create" do
      @db.save_document @recorder
      expect(@recorder.callbacks).not_to include(:before_create)
    end

    it "should not call after_create" do
      @db.save_document @recorder
      expect(@recorder.callbacks).not_to include(:after_create)
    end
  end
end

describe "update callbacks" do

  before(:each) do
    @recorder = CallbackRecorder.new :required_property => 1

    couchrest_database = double 'couchrest_database', :save_doc => {'id' => '1', 'rev' => '2'}, :view => {'rows' => []}, :info => nil
    @db = CouchPotato::Database.new(couchrest_database)
    @db.save_document! @recorder

    @recorder.callbacks.clear
  end

  describe "successful update" do

    before(:each) do
      @recorder.required_property = 2
      @db.save_document! @recorder
    end

    it "should call before_validation" do
      expect(@recorder.callbacks).to include(:before_validation)
    end

    it "should call before_validation_on_update" do
      expect(@recorder.callbacks).to include(:before_validation_on_update)
    end

    it "should call before_validation_on_save" do
      expect(@recorder.callbacks).to include(:before_validation_on_save)
    end

    it "should call before_save" do
      expect(@recorder.callbacks).to include(:before_save)
    end

    it "should call after_save" do
      expect(@recorder.callbacks).to include(:after_save)
    end

    it "should call before_update" do
      expect(@recorder.callbacks).to include(:before_update)
    end

    it "should call after_update" do
      expect(@recorder.callbacks).to include(:after_update)
    end

  end

  describe "successful update with no changes (object is not dirty)" do

    before(:each) do
      @db.save_document! @recorder
    end

    it "should call before_validation" do
      expect(@recorder.callbacks).to include(:before_validation)
    end

    it "should call before_validation_on_update" do
      expect(@recorder.callbacks).to include(:before_validation_on_update)
    end

    it "should call before_validation_on_save" do
      expect(@recorder.callbacks).to include(:before_validation_on_save)
    end

    it "should call before_save" do
      expect(@recorder.callbacks).to include(:before_save)
    end

    it "should call after_save" do
      expect(@recorder.callbacks).to include(:after_save)
    end

    it "should call before_update" do
      expect(@recorder.callbacks).to include(:before_update)
    end

    it "should call after_update" do
      expect(@recorder.callbacks).to include(:after_update)
    end

  end


  describe "failed update" do

    before(:each) do
       @recorder.required_property = nil
       @db.save_document @recorder
    end

    it "should call before_validation" do
      expect(@recorder.callbacks).to include(:before_validation)
    end

    it "should call before_validation_on_update" do
      expect(@recorder.callbacks).to include(:before_validation_on_update)
    end

    it "should call before_validation_on_save" do
      expect(@recorder.callbacks).to include(:before_validation_on_save)
    end

    it "should not call before_save" do
      expect(@recorder.callbacks).not_to include(:before_save)
    end

    it "should not call after_save" do
      expect(@recorder.callbacks).not_to include(:after_save)
    end

    it "should not call before_update" do
      expect(@recorder.callbacks).not_to include(:before_update)
    end

    it "should not call after_update" do
      expect(@recorder.callbacks).not_to include(:after_update)
    end

  end

end

describe "destroy callbacks" do

  before(:each) do
    @recorder = CallbackRecorder.new :required_property => 1
    couchrest_database = double 'couchrest_database', :save_doc => {'id' => '1', 'rev' => '2'}, :delete_doc => nil, :view => {'rows' => []}, :info => nil
    @db = CouchPotato::Database.new(couchrest_database)
    @db.save_document! @recorder

    @recorder.callbacks.clear
  end

  it "should call before_destroy" do
    @db.destroy_document @recorder
    expect(@recorder.callbacks).to include(:before_destroy)
  end

  it "should call after_destroy" do
    @db.destroy_document @recorder
    expect(@recorder.callbacks).to include(:after_destroy)
  end
end

describe "validation callbacks" do
  class ValidatedUser
    include CouchPotato::Persistence

    property :name
    before_validation :check_name
    validates_presence_of :name

    def check_name
      errors.add(:name, 'should be Paul') unless name == "Paul"
    end
  end

  it "should keep error messages set in custom before_validation filters" do
    user = ValidatedUser.new(:name => "john")
    expect(user.valid?).to eq(false)
    expect(user.errors[:name]).to eq(["should be Paul"])
  end

  it "should combine the errors from validations and callbacks" do
    user = ValidatedUser.new(:name => nil)
    expect(user.valid?).to eq(false)
    expect(user.errors[:name].any? {|msg| msg =~ /can't be (empty|blank)/ }).to eq(true)
    expect(user.errors[:name].any? {|msg| msg == "should be Paul" }).to eq(true)
    expect(user.errors[:name].size).to eq(2)
  end

  it "should clear the errors on subsequent calls to valid?" do
    user = ValidatedUser.new(:name => nil)
    expect(user.valid?).to eq(false)
    user.name = 'Paul'
    expect(user.valid?).to eq(true)
    expect(user.errors[:name]).to eq([])
  end
end

describe "validation callbacks and filter halt" do
  class FilterValidationUpdateUser
    include CouchPotato::Persistence

    property :name
    before_validation :check_name
    before_validation_on_update :return_false_from_callback

    def check_name
      errors.add(:name, 'should be Paul') unless name == "Paul"
    end

    def return_false_from_callback
      false
    end
  end

  class FilterValidationCreateUser
    include CouchPotato::Persistence

    property :name
    before_validation :check_name
    before_validation_on_save :return_false_from_callback
    before_validation_on_create :return_false_from_callback

    def check_name
      errors.add(:name, 'should be Paul') unless name == "Paul"
    end

    def return_false_from_callback
      false
    end
  end

  class FilterSaveUpdateUser
    include CouchPotato::Persistence

    property :name
    before_update :return_false_from_callback

    def return_false_from_callback
      false
    end
  end

  class FilterSaveCreateUser
    include CouchPotato::Persistence

    property :name
    before_save :return_false_from_callback
    before_create :return_false_from_callback

    def return_false_from_callback
      false
    end
  end

  before(:each) do
    recreate_db
    @db = CouchPotato.database
  end

  it "should keep error messages set in custom before_validation if an update filter returns false" do
    @user = FilterValidationUpdateUser.new(:name => "Paul")
    expect(@db.save_document(@user)).to eq(true)
    @user.name = 'Bert'
    expect(@db.save_document(@user)).to eq(false)
  end

  it "should keep error messages set in custom before_validation if a create filter returns false" do
    @user = FilterValidationCreateUser.new(:name => "Bert")
    expect(@db.save_document(@user)).to eq(false)
  end

  it "should return false on saving a document when a before update filter returned false" do
    @user = FilterSaveUpdateUser.new(:name => "Paul")
    expect(@db.save_document(@user)).to eq(true)
    @user.name = 'Bert'
    expect(@db.save_document(@user)).to eq(false)
  end

  it "should return false on saving a document when a before save or before create filter returned false" do
    @user = FilterSaveCreateUser.new(:name => "Bert")
    expect(@db.save_document(@user)).to eq(false)
  end

end