Add support for Invidious

- Embed Invidious player for invidio.us feeds
- Add new rewrite rule to use Invidious player for Youtube feeds

reader/rewrite/rewrite_functions.go

@@ -16,6 +16,7 @@ import (
 
 var (
 	youtubeRegex  = regexp.MustCompile(`youtube\.com/watch\?v=(.*)`)
+	invidioRegex  = regexp.MustCompile(`invidio\.us\/watch\?v=(.*)`)
 	imgRegex      = regexp.MustCompile(`<img [^>]+>`)
 	textLinkRegex = regexp.MustCompile(`(?mi)(\bhttps?:\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])`)
 )
@@ -148,6 +149,26 @@ func addYoutubeVideo(entryURL, entryContent string) string {
 	return entryContent
 }
 
+func addYoutubeVideoUsingInvidiousPlayer(entryURL, entryContent string) string {
+	matches := youtubeRegex.FindStringSubmatch(entryURL)
+
+	if len(matches) == 2 {
+		video := `<iframe width="650" height="350" frameborder="0" src="https://invidio.us/embed/` + matches[1] + `" allowfullscreen></iframe>`
+		return video + `<br>` + entryContent
+	}
+	return entryContent
+}
+
+func addInvidiousVideo(entryURL, entryContent string) string {
+	matches := invidioRegex.FindStringSubmatch(entryURL)
+	fmt.Println(matches)
+	if len(matches) == 2 {
+		video := `<iframe width="650" height="350" frameborder="0" src="https://invidio.us/embed/` + matches[1] + `" allowfullscreen></iframe>`
+		return video + `<br>` + entryContent
+	}
+	return entryContent
+}
+
 func addPDFLink(entryURL, entryContent string) string {
 	if strings.HasSuffix(entryURL, ".pdf") {
 		return fmt.Sprintf(`<a href="%s">PDF</a><br>%s`, entryURL, entryContent)

reader/rewrite/rewriter.go

@@ -33,6 +33,10 @@ func Rewriter(entryURL, entryContent, customRewriteRules string) string {
 			entryContent = addDynamicImage(entryURL, entryContent)
 		case "add_youtube_video":
 			entryContent = addYoutubeVideo(entryURL, entryContent)
+		case "add_invidious_video":
+			entryContent = addInvidiousVideo(entryURL, entryContent)
+		case "add_youtube_video_using_invidious_player":
+			entryContent = addYoutubeVideoUsingInvidiousPlayer(entryURL, entryContent)
 		case "add_pdf_download_link":
 			entryContent = addPDFLink(entryURL, entryContent)
 		case "nl2br":
@@ -47,7 +51,6 @@ func Rewriter(entryURL, entryContent, customRewriteRules string) string {
 
 func getPredefinedRewriteRules(entryURL string) string {
 	urlDomain := url.Domain(entryURL)
-
 	for domain, rules := range predefinedRules {
 		if strings.Contains(urlDomain, domain) {
 			return rules

reader/rewrite/rules.go

@@ -27,6 +27,7 @@ var predefinedRules = map[string]string{
 	"thedoghousediaries.com": "add_image_title",
 	"treelobsters.com":       "add_image_title",
 	"youtube.com":            "add_youtube_video",
+	"invidio.us":             "add_invidious_video",
 	"xkcd.com":               "add_image_title",
 	"framatube.org":          "nl2br,convert_text_link",
 }

reader/sanitizer/sanitizer.go

@@ -292,6 +292,7 @@ func isBlacklistedResource(src string) bool {
 
 func isValidIframeSource(src string) bool {
 	whitelist := []string{
+		"https://invidio.us",
 		"//www.youtube.com",
 		"http://www.youtube.com",
 		"https://www.youtube.com",