From e0989e7a82f65c32d655db266f67fcdc90dba77b Mon Sep 17 00:00:00 2001
From: Christian Schneppe <christian@pix-art.de>
Date: Fri, 20 Sep 2019 17:31:27 +0200
Subject: replace YouTube links with Invidious links

increases privacy and is configurable via preferences
---
 .../de/pixart/messenger/ui/util/MyLinkify.java     | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'src/main/java/de/pixart/messenger/ui/util/MyLinkify.java')

diff --git a/src/main/java/de/pixart/messenger/ui/util/MyLinkify.java b/src/main/java/de/pixart/messenger/ui/util/MyLinkify.java
index fb271cd7c..401c2cd40 100644
--- a/src/main/java/de/pixart/messenger/ui/util/MyLinkify.java
+++ b/src/main/java/de/pixart/messenger/ui/util/MyLinkify.java
@@ -29,13 +29,21 @@
 
 package de.pixart.messenger.ui.util;
 
+import android.content.Context;
+import android.content.SharedPreferences;
 import android.os.Build;
+import android.preference.PreferenceManager;
 import android.text.Editable;
+import android.text.SpannableString;
 import android.text.util.Linkify;
 
 import java.util.Locale;
+import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import de.pixart.messenger.Config;
+import de.pixart.messenger.R;
+import de.pixart.messenger.ui.SettingsActivity;
 import de.pixart.messenger.ui.text.FixedURLSpan;
 import de.pixart.messenger.utils.GeoHelper;
 import de.pixart.messenger.utils.Patterns;
@@ -43,6 +51,26 @@ import de.pixart.messenger.utils.XmppUri;
 
 public class MyLinkify {
 
+    private static final Pattern youtubePattern = Pattern.compile("(www\\.|m\\.)?(youtube\\.com|youtu\\.be|youtube-nocookie\\.com)\\/(((?!(\"|'|<)).)*)");
+
+    public static SpannableString replaceYoutube(Context context, String url) {
+        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
+        boolean invidious = sharedPreferences.getBoolean(SettingsActivity.USE_INVIDIOUS, context.getResources().getBoolean(R.bool.use_invidious));
+        if (invidious) {
+            Matcher matcher = youtubePattern.matcher(url);
+            while (matcher.find()) {
+                final String youtubeId = matcher.group(3);
+                String invidiousHost = Config.DEFAULT_INVIDIOUS_HOST.toLowerCase();
+                if (matcher.group(2) != null && matcher.group(2).equals("youtu.be")) {
+                    return new SpannableString(url.replaceAll("https://" + Pattern.quote(matcher.group()), Matcher.quoteReplacement("https://" + invidiousHost + "/watch?v=" + youtubeId + "&local=true")));
+                } else {
+                    return new SpannableString(url.replaceAll("https://" + Pattern.quote(matcher.group()), Matcher.quoteReplacement("https://" + invidiousHost + "/" + youtubeId + "&local=true")));
+                }
+            }
+        }
+        return new SpannableString(url);
+    }
+
     private static final Linkify.TransformFilter WEBURL_TRANSFORM_FILTER = (matcher, url) -> {
         if (url == null) {
             return null;
-- 
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