# frozen_string_literal: true

RSpec.describe Admin::EmailStylesController do
  fab!(:admin) { Fabricate(:admin) }
  fab!(:moderator) { Fabricate(:moderator) }
  fab!(:user) { Fabricate(:user) }

  let(:default_html) { File.read("#{Rails.root}/app/views/email/default_template.html") }
  let(:default_css) { "" }

  after do
    SiteSetting.remove_override!(:email_custom_template)
    SiteSetting.remove_override!(:email_custom_css)
  end

  describe 'show' do
    context "when logged in as an admin" do
      before { sign_in(admin) }

      it 'returns default values' do
        get '/admin/customize/email_style.json'
        expect(response.status).to eq(200)

        json = response.parsed_body['email_style']
        expect(json['html']).to eq(default_html)
        expect(json['css']).to eq(default_css)
      end

      it 'returns customized values' do
        SiteSetting.email_custom_template = "For you: %{email_content}"
        SiteSetting.email_custom_css = ".user-name { font-size: 24px; }"
        get '/admin/customize/email_style.json'
        expect(response.status).to eq(200)

        json = response.parsed_body['email_style']
        expect(json['html']).to eq("For you: %{email_content}")
        expect(json['css']).to eq(".user-name { font-size: 24px; }")
      end
    end

    shared_examples "email styles inaccessible" do
      it "denies access with a 404 response" do
        get '/admin/customize/email_style.json'

        expect(response.status).to eq(404)
        expect(response.parsed_body["errors"]).to include(I18n.t("not_found"))
      end
    end

    context "when logged in as a moderator" do
      before { sign_in(moderator) }

      include_examples "email styles inaccessible"
    end

    context "when logged in as a non-staff user" do
      before  { sign_in(user) }

      include_examples "email styles inaccessible"
    end
  end

  describe 'update' do
    let(:valid_params) do
      {
        html: 'For you: %{email_content}',
        css: '.user-name { color: purple; }'
      }
    end

    context "when logged in as an admin" do
      before { sign_in(admin) }

      it 'changes the settings' do
        SiteSetting.email_custom_css = ".user-name { font-size: 24px; }"
        put '/admin/customize/email_style.json', params: { email_style: valid_params }
        expect(response.status).to eq(200)
        expect(SiteSetting.email_custom_template).to eq(valid_params[:html])
        expect(SiteSetting.email_custom_css).to eq(valid_params[:css])
      end

      it 'reports errors' do
        put '/admin/customize/email_style.json', params: {
          email_style: valid_params.merge(html: 'No email content')
        }
        expect(response.status).to eq(422)
        json = response.parsed_body
        expect(json['errors']).to include(
          I18n.t(
            'email_style.html_missing_placeholder',
            placeholder: '%{email_content}'
          )
        )
      end
    end

    shared_examples "email style update not allowed" do
      it "denies access with a 404 response" do
        put '/admin/customize/email_style.json', params: { email_style: valid_params }

        expect(response.status).to eq(404)
        expect(response.parsed_body["errors"]).to include(I18n.t("not_found"))
      end
    end

    context "when logged in as a moderator" do
      before { sign_in(moderator) }

      include_examples "email style update not allowed"
    end

    context "when logged in as a non-staff user" do
      before  { sign_in(user) }

      include_examples "email style update not allowed"
    end
  end
end