# frozen_string_literal: true
# encoding: UTF-8
require 'test_helper'

class GroupedCollectionSelectInputTest < ActionView::TestCase
  test 'grouped collection accepts array collection form' do
    with_input_for @user, :tag_ids, :grouped_select,
      collection: [['Authors', %w[Jose Carlos]], ['General', %w[Bob John]]],
      group_method: :last

    assert_select 'select.grouped_select#user_tag_ids' do
      assert_select 'optgroup[label=Authors]' do
        assert_select 'option', 'Jose'
        assert_select 'option', 'Carlos'
      end

      assert_select 'optgroup[label=General]' do
        assert_select 'option', 'Bob'
        assert_select 'option', 'John'
      end
    end
  end

  test 'grouped collection accepts empty array collection form' do
    with_input_for @user, :tag_ids, :grouped_select,
      collection: [],
      group_method: :last

    assert_select 'select.grouped_select#user_tag_ids'
  end


  test 'grouped collection accepts proc as collection' do
    with_input_for @user, :tag_ids, :grouped_select,
      collection: proc { [['Authors', %w[Jose Carlos]], ['General', %w[Bob John]]] },
      group_method: :last

    assert_select 'select.grouped_select#user_tag_ids' do
      assert_select 'optgroup[label=Authors]' do
        assert_select 'option', 'Jose'
        assert_select 'option', 'Carlos'
      end

      assert_select 'optgroup[label=General]' do
        assert_select 'option', 'Bob'
        assert_select 'option', 'John'
      end
    end
  end

  test 'grouped collection accepts hash collection form' do
    with_input_for @user, :tag_ids, :grouped_select,
      collection: { Authors: %w[Jose Carlos], General: %w[Bob John] },
      group_method: :last

    assert_select 'select.grouped_select#user_tag_ids' do
      assert_select 'optgroup[label=Authors]' do
        assert_select 'option', 'Jose'
        assert_select 'option', 'Carlos'
      end

      assert_select 'optgroup[label=General]' do
        assert_select 'option', 'Bob'
        assert_select 'option', 'John'
      end
    end
  end

  test 'grouped collection allows overriding group_method using a lambda' do
    with_input_for @user, :tag_ids, :grouped_select,
      collection: { Authors: %w[Jose Carlos] },
      group_method: ->(i) { i.last }

    assert_select 'select.grouped_select#user_tag_ids' do
      assert_select 'optgroup[label=Authors]' do
        assert_select 'option[value=Jose]', 'Jose'
        assert_select 'option[value=Carlos]', 'Carlos'
      end
    end
  end

  test 'grouped collection accepts group_label_method option' do
    with_input_for @user, :tag_ids, :grouped_select,
      collection: { %w[Jose Carlos] => 'Authors' },
      group_method: :first,
      group_label_method: :last

    assert_select 'select.grouped_select#user_tag_ids' do
      assert_select 'optgroup[label=Authors]' do
        assert_select 'option', 'Jose'
        assert_select 'option', 'Carlos'
      end
    end
  end

  test 'grouped collection finds default label methods on the group objects' do
    option_list = %w[Jose Carlos]

    GroupedClass = Struct.new(:to_label, :options)
    group = GroupedClass.new("Authors", option_list)

    with_input_for @user, :tag_ids, :grouped_select,
      collection: [group],
      group_method: :options

    assert_select 'select.grouped_select#user_tag_ids' do
      assert_select 'optgroup[label=Authors]' do
        assert_select 'option', 'Jose'
        assert_select 'option', 'Carlos'
      end
    end
  end

  test 'grouped collections finds the default label method from the first non-empty object' do
    Agent = Struct.new(:id, :name)
    agents = [["First", []], ["Second", [Agent.new(7, 'Bond'), Agent.new(47, 'Hitman')]]]

    with_input_for @user, :tag_ids, :grouped_select,
      collection: agents,
      group_label_method: :first,
      group_method: :last,
      include_blank: false

    assert_select 'select.grouped_select#user_tag_ids' do
      assert_select 'optgroup[label=Second]' do
        assert_select 'option[value="7"]', 'Bond'
        assert_select 'option[value="47"]', 'Hitman'
      end
    end
  end

  test 'grouped collection accepts label and value methods options' do
    with_input_for @user, :tag_ids, :grouped_select,
      collection: { Authors: %w[Jose Carlos] },
      group_method: :last,
      label_method: :upcase,
      value_method: :downcase

    assert_select 'select.grouped_select#user_tag_ids' do
      assert_select 'optgroup[label=Authors]' do
        assert_select 'option[value=jose]', 'JOSE'
        assert_select 'option[value=carlos]', 'CARLOS'
      end
    end
  end

  test 'grouped collection allows overriding label and value methods using a lambda' do
    with_input_for @user, :tag_ids, :grouped_select,
      collection: { Authors: %w[Jose Carlos] },
      group_method: :last,
      label_method: ->(i) { i.upcase },
      value_method: ->(i) { i.downcase }

    assert_select 'select.grouped_select#user_tag_ids' do
      assert_select 'optgroup[label=Authors]' do
        assert_select 'option[value=jose]', 'JOSE'
        assert_select 'option[value=carlos]', 'CARLOS'
      end
    end
  end

  test 'grouped collection with associations' do
    tag_groups = [
      TagGroup.new(1, "Group of Tags", [Tag.new(1, "Tag 1"), Tag.new(2, "Tag 2")]),
      TagGroup.new(2, "Other group", [Tag.new(3, "Tag 3"), Tag.new(4, "Tag 4")])
    ]

    with_input_for @user, :tag_ids, :grouped_select,
      collection: tag_groups, group_method: :tags

    assert_select 'select.grouped_select#user_tag_ids' do
      assert_select 'optgroup[label="Group of Tags"]' do
        assert_select 'option[value="1"]', 'Tag 1'
        assert_select 'option[value="2"]', 'Tag 2'
      end

      assert_select 'optgroup[label="Other group"]' do
        assert_select 'option[value="3"]', 'Tag 3'
        assert_select 'option[value="4"]', 'Tag 4'
      end
    end
  end

  test 'grouped collection accepts html options as the last element of collection' do
    with_input_for @user, :tag_ids, :grouped_select,
      collection: [['Authors', [['Jose', 'jose', class: 'foo'], ['Carlos', 'carlos', class: 'bar']]]],
      group_method: :last

    assert_select 'select.grouped_select#user_tag_ids' do
      assert_select 'optgroup[label=Authors]' do
        assert_select 'option.foo', 'Jose'
        assert_select 'option.bar', 'Carlos'
      end
    end
  end
end
