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692e0140e2
This PR enables custom email dark mode styles by default that were added here.
There is currently poor support for dark mode queries in mail clients. The main beneficiary of these changes will be Apple Mail and Outlook.
Enjoy the darkness 🕶️
438 lines
18 KiB
Ruby
438 lines
18 KiB
Ruby
# frozen_string_literal: true
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require 'email'
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describe Email::Styles do
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let(:attachments) { {} }
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def basic_fragment(html)
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styler = Email::Styles.new(html)
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styler.format_basic
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Nokogiri::HTML5.fragment(styler.to_html)
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end
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def html_fragment(html)
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styler = Email::Styles.new(html)
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styler.format_basic
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styler.format_html
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Nokogiri::HTML5.fragment(styler.to_html)
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end
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context "basic formatter" do
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it "adds a max-width to large images" do
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frag = basic_fragment("<img height='auto' width='auto' src='gigantic.jpg'>")
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expect(frag.at("img")["style"]).to match("max-width")
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end
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it "adds a width and height to emojis" do
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frag = basic_fragment("<img src='/images/emoji/fish.png' class='emoji'>")
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expect(frag.at("img")["width"]).to eq("20")
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expect(frag.at("img")["height"]).to eq("20")
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end
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it "adds a width and height to custom emojis" do
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frag = basic_fragment("<img src='/uploads/default/_emoji/fish.png' class='emoji emoji-custom'>")
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expect(frag.at("img")["width"]).to eq("20")
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expect(frag.at("img")["height"]).to eq("20")
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end
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it "converts relative paths to absolute paths" do
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frag = basic_fragment("<img src='/some-image.png'>")
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expect(frag.at("img")["src"]).to eq("#{Discourse.base_url}/some-image.png")
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end
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it "strips classes and ids" do
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frag = basic_fragment("<div class='foo' id='bar'><div class='foo' id='bar'></div></div>")
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expect(frag.to_html).to eq("<div><div></div></div>")
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end
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end
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context "html template formatter" do
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it "attaches a style to h3 tags" do
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frag = html_fragment("<h3>hello</h3>")
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expect(frag.at('h3')['style']).to be_present
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end
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it "attaches a style to hr tags" do
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frag = html_fragment("hello<hr>")
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expect(frag.at('hr')['style']).to be_present
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end
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it "attaches a style to a tags" do
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frag = html_fragment("<a href>wat</a>")
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expect(frag.at('a')['style']).to be_present
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end
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it "attaches a style to a tags" do
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frag = html_fragment("<a href>wat</a>")
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expect(frag.at('a')['style']).to be_present
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end
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it "attaches a style to ul and li tags" do
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frag = html_fragment("<ul><li>hello</li></ul>")
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expect(frag.at('ul')['style']).to be_present
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expect(frag.at('li')['style']).to be_present
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end
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it "converts iframes to links" do
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iframe_url = "http://www.youtube.com/embed/7twifrxOTQY?feature=oembed&wmode=opaque"
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frag = html_fragment("<iframe src=\"#{iframe_url}\"></iframe>")
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expect(frag.at('iframe')).to be_blank
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expect(frag.at('a')).to be_present
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expect(frag.at('a')['href']).to eq(iframe_url)
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end
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it "won't allow non URLs in iframe src, strips them with no link" do
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iframe_url = "alert('xss hole')"
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frag = html_fragment("<iframe src=\"#{iframe_url}\"></iframe>")
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expect(frag.at('iframe')).to be_blank
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expect(frag.at('a')).to be_blank
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end
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it "won't allow empty iframe src, strips them with no link" do
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frag = html_fragment("<iframe src=''></iframe>")
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expect(frag.at('iframe')).to be_blank
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expect(frag.at('a')).to be_blank
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end
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it "prefers data-original-href attribute to get iframe link" do
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original_url = "https://vimeo.com/329875646/85f1546a42"
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iframe_url = "https://player.vimeo.com/video/329875646"
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frag = html_fragment("<iframe src=\"#{iframe_url}\" data-original-href=\"#{original_url}\"></iframe>")
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expect(frag.at('iframe')).to be_blank
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expect(frag.at('a')).to be_present
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expect(frag.at('a')['href']).to eq(original_url)
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end
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end
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context "rewriting protocol relative URLs to the forum" do
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it "doesn't rewrite a url to another site" do
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frag = html_fragment('<a href="//youtube.com/discourse">hello</a>')
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expect(frag.at('a')['href']).to eq("//youtube.com/discourse")
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end
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context "without https" do
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before do
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SiteSetting.force_https = false
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end
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it "rewrites the href to have http" do
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frag = html_fragment('<a href="//test.localhost/discourse">hello</a>')
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expect(frag.at('a')['href']).to eq("http://test.localhost/discourse")
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end
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it "rewrites the href for attachment files to have http" do
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frag = html_fragment('<a class="attachment" href="//try-discourse.global.ssl.fastly.net/uploads/default/368/40b610b0aa90cfcf.txt">attachment_file.txt</a>')
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expect(frag.at('a')['href']).to eq("http://try-discourse.global.ssl.fastly.net/uploads/default/368/40b610b0aa90cfcf.txt")
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end
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it "rewrites the src to have http" do
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frag = html_fragment('<img src="//test.localhost/blah.jpg">')
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expect(frag.at('img')['src']).to eq("http://test.localhost/blah.jpg")
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end
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end
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context "with https" do
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before do
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SiteSetting.force_https = true
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end
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it "rewrites the forum URL to have https" do
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frag = html_fragment('<a href="//test.localhost/discourse">hello</a>')
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expect(frag.at('a')['href']).to eq("https://test.localhost/discourse")
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end
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it "rewrites the href for attachment files to have https" do
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frag = html_fragment('<a class="attachment" href="//try-discourse.global.ssl.fastly.net/uploads/default/368/40b610b0aa90cfcf.txt">attachment_file.txt</a>')
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expect(frag.at('a')['href']).to eq("https://try-discourse.global.ssl.fastly.net/uploads/default/368/40b610b0aa90cfcf.txt")
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end
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it "rewrites the src to have https" do
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frag = html_fragment('<img src="//test.localhost/blah.jpg">')
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expect(frag.at('img')['src']).to eq("https://test.localhost/blah.jpg")
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end
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end
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end
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context "dark mode emails" do
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it "adds dark_mode_styles when site setting active" do
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frag = html_fragment('<div class="body">test</div>')
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styler = Email::Styles.new(frag)
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styler.format_basic
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styler.format_html
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@frag = Nokogiri::HTML5.fragment(styler.to_s)
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# dark mode attribute
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expect(@frag.css('[dm="body"]')).to be_present
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end
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end
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context "strip_avatars_and_emojis" do
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it "works for lonesome emoji with no title" do
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emoji = "<img src='/images/emoji/twitter/crying_cat_face.png'>"
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style = Email::Styles.new(emoji)
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style.strip_avatars_and_emojis
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expect(style.to_html).to match_html(emoji)
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end
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it "works for lonesome emoji with title" do
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emoji = "<img title='cry_cry' src='/images/emoji/twitter/crying_cat_face.png'>"
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style = Email::Styles.new(emoji)
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style.strip_avatars_and_emojis
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expect(style.to_html).to match_html("cry_cry")
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end
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it "works if img tag has no attrs" do
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cooked = "Create a method for click on image and use ng-click in <img> in your slide box...it is simple"
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style = Email::Styles.new(cooked)
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style.strip_avatars_and_emojis
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expect(style.to_html).to include(cooked)
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end
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end
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context "onebox_styles" do
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it "renders quote as <blockquote>" do
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fragment = html_fragment('<aside class="quote"> <div class="title"> <div class="quote-controls"> <i class="fa fa-chevron-down" title="expand/collapse"></i><a href="/t/xyz/123" title="go to the quoted post" class="back"></a> </div> <img alt="" width="20" height="20" src="https://cdn-enterprise.discourse.org/boingboing/user_avatar/bbs.boingboing.net/techapj/40/54379_1.png" class="avatar">techAPJ: </div> <blockquote> <p>lorem ipsum</p> </blockquote> </aside>')
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expect(fragment.to_s.squish).to match(/^<blockquote.+<\/blockquote>$/)
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end
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it "removes GitHub excerpts" do
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stub_request(:head, "https://github.com/discourse/discourse/pull/1253").to_return(status: 200, body: "", headers: {})
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stub_request(:get, "https://api.github.com/repos/discourse/discourse/pulls/1253").to_return(status: 200, body: onebox_response("githubpullrequest"))
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onebox = Oneboxer.onebox("https://github.com/discourse/discourse/pull/1253")
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fragment = html_fragment(onebox)
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expect(fragment.css(".github-body-container .excerpt")).to be_empty
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end
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end
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context "replace_secure_media_urls" do
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before do
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setup_s3
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SiteSetting.secure_media = true
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end
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let(:attachments) { { 'testimage.png' => stub(url: 'email/test.png') } }
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it "replaces secure media within a link with a placeholder" do
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frag = html_fragment("<a href=\"#{Discourse.base_url}\/secure-media-uploads/original/1X/testimage.png\"><img src=\"/secure-media-uploads/original/1X/testimage.png\"></a>")
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expect(frag.at('img')).not_to be_present
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expect(frag.to_s).to include("Redacted")
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end
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it "replaces secure images with a placeholder" do
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frag = html_fragment("<img src=\"/secure-media-uploads/original/1X/testimage.png\">")
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expect(frag.at('img')).not_to be_present
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expect(frag.to_s).to include("Redacted")
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end
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it "does not replace topic links with secure-media-uploads in the name" do
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frag = html_fragment("<a href=\"#{Discourse.base_url}\/t/secure-media-uploads/235723\">Visit Topic</a>")
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expect(frag.to_s).not_to include("Redacted")
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end
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it "works in lightboxes with missing srcset attribute" do
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frag = html_fragment("<a href=\"#{Discourse.base_url}\/secure-media-uploads/original/1X/testimage.png\" class=\"lightbox\"><img src=\"/secure-media-uploads/original/1X/testimage.png\"></a>")
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expect(frag.at('img')).not_to be_present
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expect(frag.to_s).to include("Redacted")
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end
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it "works in lightboxes with srcset attribute set" do
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frag = html_fragment(
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<<~HTML
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<a href="#{Discourse.base_url}/secure-media-uploads/original/1X/testimage.png" class="lightbox">
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<img src="/secure-media-uploads/original/1X/testimage.png" srcset="/secure-media-uploads/optimized/1X/testimage.png, /secure-media-uploads/original/1X/testimage.png 1.5x" />
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</a>
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HTML
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)
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expect(frag.at('img')).not_to be_present
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expect(frag.to_s).to include("Redacted")
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end
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it "skips links with no images as children" do
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frag = html_fragment("<a href=\"#{Discourse.base_url}\/secure-media-uploads/original/1X/testimage.png\"><span>Clearly not an image</span></a>")
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expect(frag.to_s).to include("not an image")
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end
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end
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context "inline_secure_images" do
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before do
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setup_s3
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SiteSetting.secure_media = true
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end
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fab!(:upload) { Fabricate(:upload, original_filename: 'testimage.png', secure: true, sha1: '123456') }
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let(:attachments) { [stub(url: 'cid:email/test.png')] }
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let(:attachments_index) { { upload.sha1 => 0 } }
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let(:html) { "<a href=\"#{Discourse.base_url}\/secure-media-uploads/original/1X/123456.png\"><img src=\"/secure-media-uploads/original/1X/123456.png\" width=\"20\" height=\"30\"></a>" }
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def strip_and_inline
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# strip out the secure media
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styler = Email::Styles.new(html)
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styler.format_basic
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styler.format_html
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html = styler.to_html
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# pass in the attachments to match uploads based on sha + original filename
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styler = Email::Styles.new(html)
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styler.inline_secure_images(attachments, attachments_index)
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@frag = Nokogiri::HTML5.fragment(styler.to_s)
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end
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it "inlines attachments where stripped-secure-media data attr is present" do
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strip_and_inline
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expect(@frag.to_s).to include("cid:email/test.png")
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expect(@frag.css('[data-stripped-secure-media]')).not_to be_present
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expect(@frag.children.attr('style').value).to eq("width: 20px; height: 30px;")
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end
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it "does not inline anything if the upload cannot be found" do
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upload.update(sha1: 'blah12')
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strip_and_inline
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expect(@frag.to_s).not_to include("cid:email/test.png")
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expect(@frag.css('[data-stripped-secure-media]')).to be_present
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end
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context "when an optimized image is used instead of the original" do
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let(:html) { "<a href=\"#{Discourse.base_url}\/secure-media-uploads/optimized/2X/1/123456_2_20x30.png\"><img src=\"/secure-media-uploads/optimized/2X/1/123456_2_20x30.png\" width=\"20\" height=\"30\"></a>" }
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it "inlines attachments where the stripped-secure-media data attr is present" do
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optimized = Fabricate(:optimized_image, upload: upload, width: 20, height: 30)
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strip_and_inline
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expect(@frag.to_s).to include("cid:email/test.png")
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expect(@frag.css('[data-stripped-secure-media]')).not_to be_present
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expect(@frag.children.attr('style').value).to eq("width: 20px; height: 30px;")
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end
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end
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context "when inlining an originally oneboxed image" do
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before do
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SiteSetting.authorized_extensions = "*"
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end
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let(:siteicon) { Fabricate(:upload, original_filename: "siteicon.ico") }
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let(:attachments) { [stub(url: 'cid:email/test.png'), stub(url: 'cid:email/test2.ico')] }
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let(:attachments_index) { { upload.sha1 => 0, siteicon.sha1 => 1 } }
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let(:html) do
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<<~HTML
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<aside class="onebox allowlistedgeneric">
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<header class="source">
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<img src="#{Discourse.base_url}/secure-media-uploads/original/1X/#{siteicon.sha1}.ico" class="site-icon" width="64" height="64">
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<a href="https://test.com/article" target="_blank" rel="noopener" title="02:33PM - 24 October 2020">Test</a>
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</header>
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<article class="onebox-body">
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<div class="aspect-image" style="--aspect-ratio:20/30;"><img src="#{Discourse.base_url}/secure-media-uploads/optimized/2X/1/123456_2_20x30.png" class="thumbnail d-lazyload" width="20" height="30" srcset="#{Discourse.base_url}/secure-media-uploads/optimized/2X/1/123456_2_20x30.png"></div>
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<h3><a href="https://test.com/article" target="_blank" rel="noopener">Test</a></h3>
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<p>This is a test onebox.</p>
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</article>
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<div class="onebox-metadata">
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</div>
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<div style="clear: both"></div>
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</aside>
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HTML
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end
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it "keeps the special site icon width and height and onebox styles" do
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optimized = Fabricate(:optimized_image, upload: upload, width: 20, height: 30)
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strip_and_inline
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expect(@frag.to_s).to include("cid:email/test.png")
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expect(@frag.to_s).to include("cid:email/test2.ico")
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expect(@frag.css('[data-stripped-secure-media]')).not_to be_present
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expect(@frag.css('[data-embedded-secure-image]')[0].attr('style')).to eq('width: 16px; height: 16px;')
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expect(@frag.css('[data-embedded-secure-image]')[1].attr('style')).to eq('width: 60px; max-height: 80%; max-width: 20%; height: auto; float: left; margin-right: 10px;')
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end
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context "when inlining a oneboxed image with a direct parent of onebox-body" do
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let(:html) do
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<<~HTML
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<aside class="onebox allowlistedgeneric">
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<header class="source">
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<img src="#{Discourse.base_url}/secure-media-uploads/original/1X/#{siteicon.sha1}.ico" class="site-icon" width="64" height="64">
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<a href="https://test.com/article" target="_blank" rel="noopener" title="02:33PM - 24 October 2020">Test</a>
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</header>
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<article class="onebox-body">
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<img src="#{Discourse.base_url}/secure-media-uploads/original/1X/123456.png" class="thumbnail onebox-avatar" width="20" height="30">
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<h3><a href="https://test.com/article" target="_blank" rel="noopener">Test</a></h3>
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<p>This is a test onebox.</p>
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</article>
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<div class="onebox-metadata">
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</div>
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<div style="clear: both"></div>
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</aside>
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HTML
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end
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it "keeps the special onebox styles" do
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strip_and_inline
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expect(@frag.to_s).to include("cid:email/test.png")
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expect(@frag.to_s).to include("cid:email/test2.ico")
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expect(@frag.css('[data-stripped-secure-media]')).not_to be_present
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expect(@frag.css('[data-embedded-secure-image]')[1].attr('style')).to eq('width: 60px; max-height: 80%; max-width: 20%; height: auto; float: left; margin-right: 10px;')
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end
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end
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context "when there is an inline-avatar in the onebox" do
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let(:html) do
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<<~HTML
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<p><a class="mention" href="/u/martin">@martin</a> check this out:</p>
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<aside class="onebox githubpullrequest">
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<header class="source">
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<a href="https://github.com/discourse/discourse/pull/11140" target="_blank" rel="noopener">github.com/discourse/discourse</a>
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</header>
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<article class="onebox-body">
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<div class="github-row">
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<div class="github-info-container">
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<h4>
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<a href="https://github.com/discourse/discourse/pull/11140" target="_blank" rel="noopener">FEATURE: Implement edit functionality for post notices</a>
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</h4>
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<div class="branches">
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<code>discourse:master</code> ← <code>discourse:feature/post_notices_edit</code>
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</div>
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<div class="github-info">
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<div class="date">
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opened <span class="discourse-local-date" data-format="ll" data-date="2020-11-05" data-time="20:33:53" data-timezone="UTC">08:33PM - 05 Nov 20 UTC</span>
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</div>
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<div class="user">
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<a href="https://github.com/udan11" target="_blank" rel="noopener">
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<img alt="udan11" src="#{Discourse.base_url}/secure-media-uploads/original/1X/123456.png" class="onebox-avatar-inline" width="20" height="20">
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udan11
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</a>
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</div>
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<div class="lines" title="2 commits changed 27 files with 250 additions and 224 deletions">
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<a href="https://github.com/discourse/discourse/pull/11140/files" target="_blank" rel="noopener">
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<span class="added">+250</span>
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<span class="removed">-224</span>
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</a>
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</div>
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</div>
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</div>
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</div>
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</article>
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<div class="onebox-metadata">
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</div>
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<div style="clear: both"></div>
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</aside>
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HTML
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end
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it "keeps the special onebox styles" do
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strip_and_inline
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expect(@frag.to_s).to include("cid:email/test.png")
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expect(@frag.css('[data-stripped-secure-media]')).not_to be_present
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expect(@frag.css('[data-embedded-secure-image]')[0].attr('style')).to eq('width: 20px; height: 20px; float: none; vertical-align: middle; max-height: 80%; max-width: 20%; height: auto; float: left; margin-right: 10px;')
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end
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end
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end
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end
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end
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