require "spec_helper"

describe Mongoid::Validatable::PresenceValidator do

  describe "#validate_each" do

    let(:product) do
      Product.new
    end

    let(:validator) do
      described_class.new(attributes: product.attributes)
    end

    context "when the field is not localized" do

      context "when the value is valid" do

        before do
          validator.validate_each(product, :brand_name, "Apple")
        end

        it "adds no errors" do
          expect(product.errors[:brand_name]).to be_empty
        end
      end

      context "when the value is nil" do

        before do
          validator.validate_each(product, :brand_name, nil)
        end

        it "adds errors" do
          expect(product.errors[:brand_name]).to eq(["can't be blank"])
        end
      end

      context "when the value is empty" do

        before do
          validator.validate_each(product, :brand_name, "")
        end

        it "adds errors" do
          expect(product.errors[:brand_name]).to eq(["can't be blank"])
        end
      end
    end

    context "when the field is localized" do

      context "when the value is valid" do

        before do
          validator.validate_each(product, :name, { "en" => "iPod Nano 8GB - Black" })
        end

        it "adds no errors" do
          expect(product.errors[:name]).to be_empty
        end
      end

      context "when the value is nil" do

        before do
          validator.validate_each(product, :name, nil)
        end

        it "adds errors" do
          expect(product.errors[:name]).to eq(["can't be blank"])
        end
      end

      context "when the localized value is nil" do

        before do
          validator.validate_each(product, :name, { "en" => nil })
        end

        it "adds errors" do
          expect(product.errors[:name]).to eq(["can't be blank in en"])
        end
      end

      context "when the value is empty" do

        before do
          validator.validate_each(product, :name, { "en" => "" })
        end

        it "adds errors" do
          expect(product.errors[:name]).to eq(["can't be blank in en"])
        end
      end

      context "when the value is empty for a language" do

        before do
          validator.validate_each(
            product,
            :name,
            { "en" => "iPod Nano 8GB - Black", "de" => "" }
          )
        end

        it "adds errors" do
          expect(product.errors[:name]).to eq(["can't be blank in de"])
        end
      end

      context "when the value is empty for all language" do

        before do
          validator.validate_each(
            product,
            :name,
            { "en" => "", "de" => "" }
          )
        end

        it "adds errors" do
          expect(product.errors[:name]).to eq(["can't be blank in en", "can't be blank in de"])
        end
      end
    end

    context "when the field is aliased" do

      context "when the aliased field name is validated" do

        context "when the value is valid" do

          before do
            validator.validate_each(product, :sku, "12345")
          end

          it "adds no errors" do
            expect(product.errors[:sku]).to be_empty
          end
        end

        context "when the value is invalid" do

          before do
            validator.validate_each(product, :sku, nil)
          end

          it "adds errors" do
            expect(product.errors[:sku]).to eq(["can't be blank"])
          end
        end
      end

      context "when the underlying field name is validated" do

        context "when the value is valid" do

          before do
            validator.validate_each(product, :stock_keeping_unit, "12345")
          end

          it "adds no errors" do
            expect(product.errors[:stock_keeping_unit]).to be_empty
          end
        end

        context "when the value is invalid" do

          before do
            validator.validate_each(product, :stock_keeping_unit, nil)
          end

          it "adds errors" do
            expect(product.errors[:stock_keeping_unit]).to eq(["can't be blank"])
          end
        end
      end

      context "when the field is localized" do

        context "when the localized value is valid" do

          before do
            validator.validate_each(product, :tagline, { "en" => "12345" })
          end

          it "adds no errors" do
            expect(product.errors[:tagline]).to be_empty
          end
        end

        context "when one of the localized values is invalid" do

          before do
            validator.validate_each(
                product,
                :tagline, { "en" => "12345", "fr" => nil }
            )
          end

          it "adds errors" do
            expect(product.errors[:tagline]).to eq(["can't be blank in fr"])
          end
        end
      end
    end
  end

  context "when validating a relation" do

    context "when the relation is a has one" do

      before do
        Person.validates :game, presence: true
      end

      after do
        Person.reset_callbacks(:save)
        Person.reset_callbacks(:validate)
      end

      context "when the relation is new" do

        let(:person) do
          Person.new
        end

        context "when the base is valid" do

          let!(:game) do
            person.build_game
          end

          context "when saving the base" do

            before do
              person.save
            end

            it "saves the relation" do
              expect(game.reload).to eq(game)
            end
          end
        end
      end
    end

    context "when the relation is a has one and autosave is false" do

      before do
        Person.relations["game"][:autosave] = false
        Person.validates :game, presence: true
      end

      after do
        Person.reset_callbacks(:validate)
      end

      it "does not change autosave on the relation" do
        expect(Person.relations["game"][:autosave]).to be false
      end

      context "when the relation is new" do

        let(:person) do
          Person.new
        end

        context "when the base is valid" do

          let!(:game) do
            person.build_game
          end

          context "when saving the base" do

            before do
              person.save
            end

            it "does not save the relation" do
              expect { game.reload }.to raise_error
            end
          end
        end
      end
    end

    context "when the relation is a belongs to" do

      let(:product) do
        Product.create(name: "testing")
      end

      context "when the relation is present" do

        let(:purchase) do
          Purchase.create
        end

        let(:line_item) do
          purchase.line_items.create(product: product)
        end

        context "when the foreign key is nil" do

          before do
            line_item.attributes["product_id"] = nil
          end

          it "is not valid" do
            expect(line_item).to_not be_valid
          end
        end
      end
    end

    context "when the relation is a many to many" do

      before do
        Person.validates :houses, presence: true
      end

      after do
        Person.reset_callbacks(:save)
        Person.reset_callbacks(:validate)
      end

      context "when the relation has documents" do

        let!(:house) do
          House.create
        end

        let!(:person) do
          Person.create(houses: [ house ])
        end

        context "when the relation is loaded from the db" do

          let(:loaded) do
            Person.find(person.id)
          end

          it "is valid" do
            expect(loaded).to be_valid
          end
        end

        context "when the relation is in memory" do

          it "is valid" do
            expect(person).to be_valid
          end
        end
      end
    end
  end

  context "when validating a localized field" do

    context "when any translation is blank" do

      let(:product) do
        Product.new
      end

      before do
        product.name_translations = { "de" => "" }
      end

      it "is not a valid document" do
        expect(product).to_not be_valid
      end

      it "includes the proper errors" do
        product.valid?
        expect(product.errors[:name]).to_not be_empty
      end
    end

    context "when any translation is nil" do

      let(:product) do
        Product.new
      end

      before do
        product.name_translations = { "de" => nil }
      end

      it "is not a valid document" do
        expect(product).to_not be_valid
      end

      it "includes the proper errors" do
        product.valid?
        expect(product.errors[:name]).to_not be_empty
      end
    end

    context "when the entire field is nil" do

      let(:product) do
        Product.new
      end

      before do
        product.name_translations = nil
      end

      it "is not a valid document" do
        expect(product).to_not be_valid
      end

      it "includes the proper errors" do
        product.valid?
        expect(product.errors[:name]).to_not be_empty
      end
    end

    context "when the entire field is empty" do

      let(:product) do
        Product.new
      end

      before do
        product.name_translations = {}
      end

      it "is not a valid document" do
        expect(product).to_not be_valid
      end

      it "includes the proper errors" do
        product.valid?
        expect(product.errors[:name]).to_not be_empty
      end
    end

    context "when the translations are present" do

      let(:product) do
        Product.new
      end

      before do
        product.name_translations = { "en" => "test" }
      end

      it "is a valid document" do
        expect(product).to be_valid
      end
    end
  end

  context "when presence_of array attribute is updated and saved" do

    let(:updated_products) do
      [ "Laptop", "Tablet", "Smartphone", "Desktop" ]
    end

    let(:manufacturer) do
      Manufacturer.create!(products: [ "Laptop", "Tablet" ])
    end

    before do
      manufacturer.products = updated_products
      manufacturer.save!
    end

    let(:reloaded) do
      Manufacturer.find(manufacturer.id)
    end

    it "persists the changes" do
      expect(reloaded.products).to eq(updated_products)
    end
  end

  context "when an array attribute has been updated" do

    let(:updated_products) do
      [ "Laptop", "Tablet", "Smartphone", "Desktop" ]
    end

    let(:manufacturer) do
      Manufacturer.create!(products: [ "Laptop", "Tablet" ])
    end

    context "when retrieved, flattened and iterated" do

      before do
        manufacturer.products = updated_products
        attrs = manufacturer.attributes
        [attrs].flatten.each { |attr| }
      end

      it "does not destroy the models change list" do
        expect(manufacturer.changes).to_not be_empty
      end

      it "maintains the list of changes" do
        expect(manufacturer.changes).to eq({
          "products" => [
            [ "Laptop", "Tablet" ],
            [ "Laptop", "Tablet", "Smartphone", "Desktop" ]
          ]
        })
      end
    end
  end

  context "when validating a boolean false value" do

    let(:template) do
      Template.new
    end

    context "when the value is false" do

      it "is a valid document" do
        expect(template).to be_valid
      end
    end

    context "when the value is true" do

      before do
        template.active = true
      end

      it "is a valid document" do
        expect(template).to be_valid
      end
    end
  end

  context "when describing validation on the instance level" do

    let!(:dictionary) do
      Dictionary.create!(name: "en")
    end

    let(:validators) do
      dictionary.validates_presence_of :name
    end

    it "adds the validation only to the instance" do
      expect(validators).to eq([ described_class ])
    end
  end

  context "when validating an array" do

    before do
      Person.validates :aliases, presence: { allow_blank: false }
    end

    after do
      Person.reset_callbacks(:validate)
    end

    context "when allow blank is false" do

      let(:person) do
        Person.new
      end

      context "when the array is empty" do

        before do
          person.array = []
          person.valid?
        end

        it "adds the errors to the document" do
          expect(person.errors[:aliases]).to_not be_empty
        end
      end
    end
  end
end