# frozen_string_literal: true

RSpec.describe Admin::EmailStylesController do
  fab!(:admin)
  fab!(:moderator)
  fab!(: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