#-- copyright
# OpenProject is an open source project management software.
# Copyright (C) 2012-2021 the OpenProject GmbH
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2013 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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# See COPYRIGHT and LICENSE files for more details.
#++

require 'spec_helper'

describe CustomField, type: :model do
  before do
    CustomField.destroy_all
  end

  let(:field)  { FactoryBot.build :custom_field }
  let(:field2) { FactoryBot.build :custom_field }

  describe '#name' do
    it { is_expected.to validate_presence_of(:name) }
    it { is_expected.to validate_length_of(:name).is_at_most(256) }

    describe 'uniqueness' do
      describe 'WHEN value, locale and type are identical' do
        before do
          field.name = field2.name = 'taken name'
          field2.save!
        end

        it { expect(field).not_to be_valid }
      end

      describe 'WHEN value and locale are identical and type is different' do
        before do
          field.name = field2.name = 'taken name'
          field2.save!
          field.type = 'TestCustomField'
        end

        it { expect(field).to be_valid }
      end

      describe 'WHEN type and locale are identical and value is different' do
        before do
          field.name = 'new name'
          field2.name = 'taken name'
          field2.save!
        end

        it { expect(field).to be_valid }
      end
    end
  end

  describe '#valid?' do
    describe "WITH a text field
              WITH minimum length blank" do
      before do
        field.field_format = 'text'
        field.min_length = nil
      end
      it { expect(field).not_to be_valid }
    end

    describe "WITH a text field
              WITH maximum length blank" do
      before do
        field.field_format = 'text'
        field.max_length = nil
      end
      it { expect(field).not_to be_valid }
    end

    describe "WITH a text field
              WITH minimum length not an integer" do
      before do
        field.field_format = 'text'
        field.min_length = 'a'
      end
      it { expect(field).not_to be_valid }
    end

    describe "WITH a text field
              WITH maximum length not an integer" do
      before do
        field.field_format = 'text'
        field.max_length = 'a'
      end
      it { expect(field).not_to be_valid }
    end

    describe "WITH a text field
              WITH minimum length greater than maximum length" do
      before do
        field.field_format = 'text'
        field.min_length = 2
        field.max_length = 1
      end
      it { expect(field).not_to be_valid }
    end

    describe "WITH a text field
              WITH negative minimum length" do
      before do
        field.field_format = 'text'
        field.min_length = -2
      end
      it { expect(field).not_to be_valid }
    end

    describe "WITH a text field
              WITH negative maximum length" do
      before do
        field.field_format = 'text'
        field.max_length = -2
      end
      it { expect(field).not_to be_valid }
    end

    describe "WITH a text field
              WITH an invalid regexp" do
      before do
        field.field_format = 'text'
        field.regexp = '[0-9}'
      end

      it 'is not valid' do
        expect(field).not_to be_valid
        expect(field.errors[:regexp].size).to eq(1)
      end
    end

    describe "WITH a list field
              WITHOUT a custom option" do
      before do
        field.field_format = 'list'
      end

      it 'is not valid' do
        expect(field)
          .to be_invalid
      end
    end

    describe "WITH a list field
              WITH a custom option" do
      before do
        field.field_format = 'list'
        field.custom_options.build(value: 'some value')
      end

      it 'is valid' do
        expect(field)
          .to be_valid
      end
    end
  end

  describe '#accessor_name' do
    let(:field) { FactoryBot.build_stubbed :custom_field }

    it 'is formatted as expected' do
      expect(field.accessor_name).to eql("custom_field_#{field.id}")
    end
  end

  describe '#possible_values_options' do
    let(:project) { FactoryBot.build_stubbed(:project) }
    let(:user1) { FactoryBot.build_stubbed(:user) }
    let(:user2) { FactoryBot.build_stubbed(:user) }

    context 'for a user custom field' do
      before do
        field.field_format = 'user'
        allow(project)
          .to receive(:principals)
          .and_return([user1, user2])

        allow(Principal)
          .to receive(:in_visible_project_or_me)
          .and_return([user2])
      end

      context 'for a project' do
        it 'is a list of name, id pairs' do
          expect(field.possible_values_options(project))
            .to match_array [[user1.name, user1.id.to_s],
                             [user2.name, user2.id.to_s]]
        end
      end

      context 'for something that responds to project' do
        it 'is a list of name, id pairs' do
          object = OpenStruct.new project: project

          expect(field.possible_values_options(object))
            .to match_array [[user1.name, user1.id.to_s],
                             [user2.name, user2.id.to_s]]
        end
      end

      context 'for nil' do
        it 'returns all principles visible to me' do
          expect(field.possible_values_options)
            .to match_array [[user2.name, user2.id.to_s]]
        end
      end
    end

    context 'for a list custom field' do
      let(:option1) { FactoryBot.build_stubbed(:custom_option) }
      let(:option2) { FactoryBot.build_stubbed(:custom_option) }

      before do
        field.field_format = 'list'

        field.custom_options = [option1, option2]
      end

      it 'is a list of name, id pairs' do
        expect(field.possible_values_options)
          .to match_array [[option1.value, option1.id.to_s],
                           [option2.value, option2.id.to_s]]
      end
    end

    context 'for a version custom field' do
      let(:versions) { [FactoryBot.build_stubbed(:version), FactoryBot.build_stubbed(:version)] }

      before do
        field.field_format = 'version'
      end

      context 'with a project provided' do
        it 'returns the project\'s shared_versions' do
          allow(project)
            .to receive(:shared_versions)
            .and_return(versions)

          expect(field.possible_values_options(project))
            .to eql(versions.sort.map { |u| [u.name, u.id.to_s] })
        end
      end

      context 'with a time entry provided' do
        let(:time_entry) { FactoryBot.build_stubbed(:time_entry, project: project) }

        it 'returns the project\'s shared_versions' do
          allow(project)
            .to receive(:shared_versions)
            .and_return(versions)

          expect(field.possible_values_options(project))
            .to eql(versions.sort.map { |u| [u.name, u.id.to_s] })
        end
      end

      context 'with nothing provided' do
        it 'returns the systemwide versions' do
          allow(Version)
            .to receive(:systemwide)
            .and_return(versions)

          expect(field.possible_values_options)
            .to eql(versions.sort.map { |u| [u.name, u.id.to_s] })
        end
      end
    end
  end

  describe '#possible_values' do
    context 'on a list custom field' do
      let(:field) { CustomField.new field_format: "list" }

      context 'on providing an array' do
        before do
          field.possible_values = ['One value', 'Two values', '']
        end

        it 'accepts the values' do
          expect(field.possible_values.map(&:value))
            .to match_array(['One value', 'Two values'])
        end
      end

      context 'on providing a string' do
        before do
          field.possible_values = 'One value'
        end

        it 'accepts the values' do
          expect(field.possible_values.map(&:value))
            .to match_array(['One value'])
        end
      end

      context 'on providing a multiline string' do
        before do
          field.possible_values = "One value\nTwo values  \r\n \n"
        end

        it 'accepts the values' do
          expect(field.possible_values.map(&:value))
            .to match_array(['One value', 'Two values'])
        end
      end
    end
  end

  describe 'nested attributes for custom options' do
    let(:option) { FactoryBot.build(:custom_option) }
    let(:options) { [option] }
    let(:field) { FactoryBot.build :custom_field, field_format: 'list', custom_options: options }

    before do
      field.save!
    end

    shared_examples_for 'saving updates field\'s updated_at' do
      it 'updates updated_at' do
        timestamp_before = field.updated_at
        sleep 0.001
        field.save
        expect(field.updated_at).not_to eql(timestamp_before)
      end
    end

    context 'after adding a custom option' do
      before do
        field.attributes = { 'custom_options_attributes' => { '0' => option.attributes,
                                                              '1' => { value: 'blubs' } } }
      end

      it_behaves_like 'saving updates field\'s updated_at'
    end

    context 'after changing a custom option' do
      before do
        attributes = option.attributes.merge(value: 'new_value')

        field.attributes = { 'custom_options_attributes' => { '0' => attributes } }
      end

      it_behaves_like 'saving updates field\'s updated_at'
    end
  end

  describe '#multi_value_possible?' do
    context 'with a wp list cf' do
      let(:field) { FactoryBot.build_stubbed :list_wp_custom_field }

      it 'is true' do
        expect(field)
          .to be_multi_value_possible
      end
    end

    context 'with a wp user cf' do
      let(:field) { FactoryBot.build_stubbed :user_wp_custom_field }

      it 'is true' do
        expect(field)
          .to be_multi_value_possible
      end
    end

    context 'with a wp int cf' do
      let(:field) { FactoryBot.build_stubbed :int_wp_custom_field }

      it 'is true' do
        expect(field)
          .not_to be_multi_value_possible
      end
    end

    context 'with a project list cf' do
      let(:field) { FactoryBot.build_stubbed :list_project_custom_field }

      it 'is true' do
        expect(field)
          .to be_multi_value_possible
      end
    end

    context 'with a project user cf' do
      let(:field) { FactoryBot.build_stubbed :user_project_custom_field }

      it 'is true' do
        expect(field)
          .to be_multi_value_possible
      end
    end

    context 'with a project int cf' do
      let(:field) { FactoryBot.build_stubbed :int_project_custom_field }

      it 'is true' do
        expect(field)
          .not_to be_multi_value_possible
      end
    end

    context 'with a time_entry user cf' do
      let(:field) { FactoryBot.build_stubbed :time_entry_custom_field, field_format: 'user' }

      it 'is true' do
        expect(field)
          .not_to be_multi_value_possible
      end
    end

    context 'with a time_entry list cf' do
      let(:field) { FactoryBot.build_stubbed :time_entry_custom_field, field_format: 'list' }

      it 'is true' do
        expect(field)
          .not_to be_multi_value_possible
      end
    end
  end

  describe '#destroy' do
    it 'removes the cf' do
      field.save!

      field.destroy

      expect(CustomField.where(id: field.id).exists?)
        .to be_falsey
    end
  end
end