require 'rails_helper'

describe 'Markdown References', :js do
  let(:user)    { create(:user) }
  let(:actual_project) { create(:project, :public, :repository) }
  let(:merge_request) { create(:merge_request, target_project: actual_project, source_project: actual_project)}
  let(:issue_actual_project) { create(:issue, project: actual_project) }
  let!(:other_project) { create(:project, :public) }
  let!(:issue_other_project)   { create(:issue, project: other_project) }
  let(:issues) { [issue_actual_project, issue_other_project] }

  def build_note
    markdown = "Referencing internal issue #{issue_actual_project.to_reference}, " +
      "cross-project #{issue_other_project.to_reference(actual_project)} external JIRA-5 " +
      "and non existing #999"

    page.within('#diff-notes-app') do
      fill_in 'note_note', with: markdown
    end
  end

  shared_examples 'correct references' do
    before do
      remotelink = double(:remotelink, all: [], build: double(save!: true))

      stub_request(:get, "https://jira.example.com/rest/api/2/issue/JIRA-5")
      stub_request(:post, "https://jira.example.com/rest/api/2/issue/JIRA-5/comment")
      allow_any_instance_of(JIRA::Resource::Issue).to receive(:remotelink).and_return(remotelink)

      sign_in(user)
      visit merge_request_path(merge_request)
      build_note
    end

    def links_expectations
      issues.each do |issue|
        if referenced_issues.include?(issue)
          expect(page).to have_link(issue.to_reference, href: issue_path(issue))
        else
          expect(page).not_to have_link(issue.to_reference, href: issue_path(issue))
        end
      end

      if jira_referenced
        expect(page).to have_link('JIRA-5', href: 'https://jira.example.com/browse/JIRA-5')
      else
        expect(page).not_to have_link('JIRA-5', href: 'https://jira.example.com/browse/JIRA-5')
      end

      expect(page).not_to have_link('#999')
    end

    it 'creates a link to the referenced issue on the preview' do
      find('.js-md-preview-button').click
      wait_for_requests

      page.within('.md-preview-holder') do
        links_expectations
      end
    end

    it 'creates a link to the referenced issue after submit' do
      click_button 'Comment'
      wait_for_requests

      page.within('#diff-notes-app') do
        links_expectations
      end
    end

    it 'creates a note on the referenced issues' do
      click_button 'Comment'
      wait_for_requests

      if referenced_issues.include?(issue_actual_project)
        visit issue_path(issue_actual_project)

        page.within('#notes') do
          expect(page).to have_content(
            "#{user.to_reference} mentioned in merge request #{merge_request.to_reference}"
          )
        end
      end

      if referenced_issues.include?(issue_other_project)
        visit issue_path(issue_other_project)

        page.within('#notes') do
          expect(page).to have_content(
            "#{user.to_reference} mentioned in merge request #{merge_request.to_reference(other_project)}"
          )
        end
      end
    end
  end

  context 'when internal issues tracker is enabled for the other project' do
    context 'when only internal issues tracker is enabled for the actual project' do
      include_examples 'correct references' do
        let(:referenced_issues) { [issue_actual_project, issue_other_project] }
        let(:jira_referenced)   { false }
      end
    end

    context 'when both external and internal issues trackers are enabled for the actual project' do
      before do
        create(:jira_service, project: actual_project)
      end

      include_examples 'correct references' do
        let(:referenced_issues) { [issue_actual_project, issue_other_project] }
        let(:jira_referenced)   { true }
      end
    end

    context 'when only external issues tracker is enabled for the actual project' do
      before do
        create(:jira_service, project: actual_project)

        actual_project.issues_enabled = false
        actual_project.save!
      end

      include_examples 'correct references' do
        let(:referenced_issues) { [issue_other_project] }
        let(:jira_referenced)   { true }
      end
    end

    context 'when no tracker is enabled for the actual project' do
      before do
        actual_project.issues_enabled = false
        actual_project.save!
      end

      include_examples 'correct references' do
        let(:referenced_issues) { [issue_other_project] }
        let(:jira_referenced)   { false }
      end
    end
  end

  context 'when internal issues tracker is disabled for the other project' do
    before do
      other_project.issues_enabled = false
      other_project.save!
    end

    context 'when only internal issues tracker is enabled for the actual project' do
      include_examples 'correct references' do
        let(:referenced_issues) { [issue_actual_project] }
        let(:jira_referenced)   { false }
      end
    end

    context 'when both external and internal issues trackers are enabled for the actual project' do
      before do
        create(:jira_service, project: actual_project)
      end

      include_examples 'correct references' do
        let(:referenced_issues) { [issue_actual_project] }
        let(:jira_referenced)   { true }
      end
    end

    context 'when only external issues tracker is enabled for the actual project' do
      before do
        create(:jira_service, project: actual_project)

        actual_project.issues_enabled = false
        actual_project.save!
      end

      include_examples 'correct references' do
        let(:referenced_issues) { [] }
        let(:jira_referenced)   { true }
      end
    end

    context 'when no issues tracker is enabled for the actual project' do
      before do
        actual_project.issues_enabled = false
        actual_project.save!
      end

      include_examples 'correct references' do
        let(:referenced_issues) { [] }
        let(:jira_referenced)   { false }
      end
    end
  end
end