# frozen_string_literal: true

require 'spec_helper'

RSpec.describe 'getting group members information' do
  include GraphqlHelpers

  let_it_be(:parent_group) { create(:group, :public) }
  let_it_be(:user) { create(:user) }
  let_it_be(:user_1) { create(:user, username: 'user') }
  let_it_be(:user_2) { create(:user, username: 'test') }

  before_all do
    [user_1, user_2].each { |user| parent_group.add_guest(user) }
  end

  context 'when the request is correct' do
    it_behaves_like 'a working graphql query' do
      before do
        fetch_members
      end
    end

    it 'returns group members successfully' do
      fetch_members

      expect(graphql_errors).to be_nil
      expect_array_response(user_1, user_2)
    end

    it 'returns members that match the search query' do
      fetch_members(args: { search: 'test' })

      expect(graphql_errors).to be_nil
      expect_array_response(user_2)
    end
  end

  context 'member relations' do
    let_it_be(:child_group) { create(:group, :public, parent: parent_group) }
    let_it_be(:grandchild_group) { create(:group, :public, parent: child_group) }
    let_it_be(:child_user) { create(:user) }
    let_it_be(:grandchild_user) { create(:user) }

    before_all do
      child_group.add_guest(child_user)
      grandchild_group.add_guest(grandchild_user)
    end

    it 'returns direct members' do
      fetch_members(group: child_group, args: { relations: [:DIRECT] })

      expect(graphql_errors).to be_nil
      expect_array_response(child_user)
    end

    it 'returns direct and inherited members' do
      fetch_members(group: child_group, args: { relations: [:DIRECT, :INHERITED] })

      expect(graphql_errors).to be_nil
      expect_array_response(child_user, user_1, user_2)
    end

    it 'returns direct, inherited, and descendant members' do
      fetch_members(group: child_group, args: { relations: [:DIRECT, :INHERITED, :DESCENDANTS] })

      expect(graphql_errors).to be_nil
      expect_array_response(child_user, user_1, user_2, grandchild_user)
    end

    it 'returns an error for an invalid member relation' do
      fetch_members(group: child_group, args: { relations: [:OBLIQUE] })

      expect(graphql_errors.first)
        .to include('path' => %w[query group groupMembers relations],
                    'message' => a_string_including('invalid value ([OBLIQUE])'))
    end
  end

  context 'when unauthenticated' do
    it 'returns visible members' do
      fetch_members(current_user: nil)

      expect_array_response(user_1, user_2)
    end
  end

  def fetch_members(group: parent_group, current_user: user, args: {})
    post_graphql(members_query(group.full_path, args), current_user: current_user)
  end

  def members_query(group_path, args = {})
    members_node = <<~NODE
    edges {
      node {
        user {
          id
        }
      }
    }
    NODE

    graphql_query_for("group",
      { full_path: group_path },
      [query_graphql_field("groupMembers", args, members_node)]
    )
  end

  def expect_array_response(*items)
    expect(response).to have_gitlab_http_status(:success)
    member_gids = graphql_data_at(:group, :group_members, :edges, :node, :user, :id)

    expect(member_gids).to match_array(items.map { |u| global_id_of(u) })
  end
end