# frozen_string_literal: true

require 'spec_helper'

RSpec.describe 'Updating an existing release' do
  include GraphqlHelpers
  include Presentable

  let_it_be(:public_user) { create(:user) }
  let_it_be(:guest) { create(:user) }
  let_it_be(:reporter) { create(:user) }
  let_it_be(:developer) { create(:user) }
  let_it_be(:project) { create(:project, :public, :repository) }
  let_it_be(:milestone_12_3) { create(:milestone, project: project, title: '12.3') }
  let_it_be(:milestone_12_4) { create(:milestone, project: project, title: '12.4') }

  let_it_be(:tag_name) { 'v1.1.0' }
  let_it_be(:name) { 'Version 7.12.5'}
  let_it_be(:description) { 'Release 7.12.5 :rocket:' }
  let_it_be(:released_at) { '2018-12-10' }
  let_it_be(:created_at) { '2018-11-05' }
  let_it_be(:milestones) { [milestone_12_3, milestone_12_4] }

  let_it_be(:release) do
    create(:release, project: project, tag: tag_name, name: name,
           description: description, released_at: Time.parse(released_at).utc,
           created_at: Time.parse(created_at).utc, milestones: milestones)
  end

  let(:mutation_name) { :release_update }

  let(:mutation_arguments) do
    {
      projectPath: project.full_path,
      tagName: tag_name
    }
  end

  let(:mutation) do
    graphql_mutation(mutation_name, mutation_arguments, <<~FIELDS)
      release {
        tagName
        name
        description
        releasedAt
        createdAt
        milestones {
          nodes {
            title
          }
        }
      }
      errors
    FIELDS
  end

  let(:update_release) { post_graphql_mutation(mutation, current_user: current_user) }
  let(:mutation_response) { graphql_mutation_response(mutation_name)&.with_indifferent_access }

  let(:expected_attributes) do
    {
      tagName: tag_name,
      name: name,
      description: description,
      releasedAt: Time.parse(released_at).utc.iso8601,
      createdAt: Time.parse(created_at).utc.iso8601,
      milestones: {
        nodes: milestones.map { |m| { title: m.title } }
      }
    }.with_indifferent_access
  end

  around do |example|
    freeze_time { example.run }
  end

  before do
    project.add_guest(guest)
    project.add_reporter(reporter)
    project.add_developer(developer)

    stub_default_url_options(host: 'www.example.com')
  end

  shared_examples 'no errors' do
    it 'returns no errors' do
      update_release

      expect(graphql_errors).not_to be_present
    end
  end

  shared_examples 'top-level error with message' do |error_message|
    it 'returns a top-level error with message' do
      update_release

      expect(mutation_response).to be_nil
      expect(graphql_errors.count).to eq(1)
      expect(graphql_errors.first['message']).to eq(error_message)
    end
  end

  shared_examples 'errors-as-data with message' do |error_message|
    it 'returns an error-as-data with message' do
      update_release

      expect(mutation_response[:release]).to be_nil
      expect(mutation_response[:errors].count).to eq(1)
      expect(mutation_response[:errors].first).to match(error_message)
    end
  end

  shared_examples 'updates release fields' do |updates|
    it_behaves_like 'no errors'

    it 'updates the correct field and returns the release' do
      update_release

      expect(mutation_response[:release]).to eq(expected_attributes.merge(updates))
    end
  end

  context 'when the current user has access to update releases' do
    let(:current_user) { developer }

    context 'name' do
      context 'when a new name is provided' do
        let(:mutation_arguments) { super().merge(name: 'Updated name') }

        it_behaves_like 'updates release fields', name: 'Updated name'
      end

      context 'when null is provided' do
        let(:mutation_arguments) { super().merge(name: nil) }

        it_behaves_like 'updates release fields', name: 'v1.1.0'
      end
    end

    context 'description' do
      context 'when a new description is provided' do
        let(:mutation_arguments) { super().merge(description: 'Updated description') }

        it_behaves_like 'updates release fields', description: 'Updated description'
      end

      context 'when null is provided' do
        let(:mutation_arguments) { super().merge(description: nil) }

        it_behaves_like 'updates release fields', description: nil
      end
    end

    context 'releasedAt' do
      context 'when no time zone is provided' do
        let(:mutation_arguments) { super().merge(releasedAt: '2015-05-05') }

        it_behaves_like 'updates release fields', releasedAt: Time.parse('2015-05-05').utc.iso8601
      end

      context 'when a local time zone is provided' do
        let(:mutation_arguments) { super().merge(releasedAt: Time.parse('2015-05-05').in_time_zone('Hawaii').iso8601) }

        it_behaves_like 'updates release fields', releasedAt: Time.parse('2015-05-05').utc.iso8601
      end

      context 'when null is provided' do
        let(:mutation_arguments) { super().merge(releasedAt: nil) }

        it_behaves_like 'top-level error with message', 'if the releasedAt argument is provided, it cannot be null'
      end
    end

    context 'milestones' do
      context 'when a new set of milestones is provided provided' do
        let(:mutation_arguments) { super().merge(milestones: ['12.3']) }

        it_behaves_like 'updates release fields', milestones: { nodes: [{ title: '12.3' }] }
      end

      context 'when an empty array is provided' do
        let(:mutation_arguments) { super().merge(milestones: []) }

        it_behaves_like 'updates release fields', milestones: { nodes: [] }
      end

      context 'when null is provided' do
        let(:mutation_arguments) { super().merge(milestones: nil) }

        it_behaves_like 'top-level error with message', 'if the milestones argument is provided, it cannot be null'
      end

      context 'when a non-existent milestone title is provided' do
        let(:mutation_arguments) { super().merge(milestones: ['not real']) }

        it_behaves_like 'errors-as-data with message', 'Milestone(s) not found: not real'
      end

      context 'when a milestone title from a different project is provided' do
        let(:milestone_in_different_project) { create(:milestone, title: 'milestone in different project') }
        let(:mutation_arguments) { super().merge(milestones: [milestone_in_different_project.title]) }

        it_behaves_like 'errors-as-data with message', 'Milestone(s) not found: milestone in different project'
      end
    end

    context 'validation' do
      context 'when no updated fields are provided' do
        it_behaves_like 'errors-as-data with message', 'params is empty'
      end

      context 'when the tag does not exist' do
        let(:mutation_arguments) { super().merge(tagName: 'not-a-real-tag') }

        it_behaves_like 'errors-as-data with message', 'Tag does not exist'
      end

      context 'when the project does not exist' do
        let(:mutation_arguments) { super().merge(projectPath: 'not/a/real/path') }

        it_behaves_like 'top-level error with message', "The resource that you are attempting to access does not exist or you don't have permission to perform this action"
      end
    end
  end

  context "when the current user doesn't have access to update releases" do
    expected_error_message = "The resource that you are attempting to access does not exist or you don't have permission to perform this action"

    context 'when the current user is a Reporter' do
      let(:current_user) { reporter }

      it_behaves_like 'top-level error with message', expected_error_message
    end

    context 'when the current user is a Guest' do
      let(:current_user) { guest }

      it_behaves_like 'top-level error with message', expected_error_message
    end

    context 'when the current user is a public user' do
      let(:current_user) { public_user }

      it_behaves_like 'top-level error with message', expected_error_message
    end
  end
end