[YouTube] Update client versions and fix a bug when using resetClientVersionAndKey method

The boolean keyAndVersionExtracted in YoutubeParsingHelper was not set to false when resetting the client version and the key, which makes the extractor uses null on the next getting of the client version or the key if the clientVersion and the key were extracted before.
Also update client versions.

Author: AudricV

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeParsingHelper.java

@@ -40,6 +40,7 @@
 import java.time.ZoneOffset;
 import java.time.format.DateTimeParseException;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
@@ -78,15 +79,15 @@ private YoutubeParsingHelper() {
 
     public static final String YOUTUBEI_V1_URL = "https://www.youtube.com/youtubei/v1/";
 
-    private static final String HARDCODED_CLIENT_VERSION = "2.20210728.00.00";
+    private static final String HARDCODED_CLIENT_VERSION = "2.20220107.00.00";
     private static final String HARDCODED_KEY = "AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8";
     private static final String MOBILE_YOUTUBE_KEY = "AIzaSyA8eiZmM1FaDVjRy-df2KTyQ_vz_yYM39w";
-    private static final String MOBILE_YOUTUBE_CLIENT_VERSION = "16.29.38";
+    private static final String MOBILE_YOUTUBE_CLIENT_VERSION = "16.49.37";
     private static String clientVersion;
     private static String key;
 
     private static final String[] HARDCODED_YOUTUBE_MUSIC_KEY =
-            {"AIzaSyC9XL3ZjWddXya6X74dJoCTL-WEYFDNX30", "67", "1.20210726.00.01"};
+            {"AIzaSyC9XL3ZjWddXya6X74dJoCTL-WEYFDNX30", "67", "1.20220103.00.00"};
     private static String[] youtubeMusicKey;
 
     private static boolean keyAndVersionExtracted = false;
@@ -551,40 +552,53 @@ private static void extractClientVersionAndKey() throws IOException, ExtractionE
     }
 
     /**
-     * Get the client version
+     * Get the client version used by YouTube website on InnerTube requests.
      */
     public static String getClientVersion() throws IOException, ExtractionException {
         if (!isNullOrEmpty(clientVersion)) {
             return clientVersion;
         }
-        if (areHardcodedClientVersionAndKeyValid()) {
-            clientVersion = HARDCODED_CLIENT_VERSION;
-            return clientVersion;
-        }
 
         extractClientVersionAndKey();
-        return clientVersion;
+
+        if (keyAndVersionExtracted) {
+            return clientVersion;
+        } else {
+            if (areHardcodedClientVersionAndKeyValid()) {
+                clientVersion = HARDCODED_CLIENT_VERSION;
+                return clientVersion;
+            }
+        }
+        throw new ExtractionException("Could not get YouTube WEB client version");
     }
 
     /**
-     * Get the key
+     * Get the internal API key used by YouTube website on InnerTube requests.
      */
     public static String getKey() throws IOException, ExtractionException {
         if (!isNullOrEmpty(key)) {
             return key;
         }
-        if (areHardcodedClientVersionAndKeyValid()) {
-            key = HARDCODED_KEY;
+
+        extractClientVersionAndKey();
+
+        if (keyAndVersionExtracted) {
             return key;
+        } else {
+            if (areHardcodedClientVersionAndKeyValid()) {
+                key = HARDCODED_KEY;
+                return key;
+            }
         }
 
-        extractClientVersionAndKey();
-        return key;
+        // The ANDROID API key is also valid with the WEB client so return it if we couldn't
+        // extract the WEB API key.
+        return MOBILE_YOUTUBE_KEY;
     }
 
     /**
      * <p>
-     * <b>Only use in tests.</b>
+     * <b>Only used in tests.</b>
      * </p>
      *
      * <p>
@@ -600,11 +614,12 @@ public static String getKey() throws IOException, ExtractionException {
     public static void resetClientVersionAndKey() {
         clientVersion = null;
         key = null;
+        keyAndVersionExtracted = false;
     }
 
     /**
      * <p>
-     * <b>Only use in tests.</b>
+     * <b>Only used in tests.</b>
      * </p>
      */
     public static void setNumberGenerator(final Random random) {
@@ -1128,7 +1143,7 @@ public static void addClientInfoHeaders(@Nonnull final Map<String, List<String>>
      */
     public static void addCookieHeader(@Nonnull final Map<String, List<String>> headers) {
         if (headers.get("Cookie") == null) {
-            headers.put("Cookie", Collections.singletonList(generateConsentCookie()));
+            headers.put("Cookie", Arrays.asList(generateConsentCookie()));
         } else {
             headers.get("Cookie").add(generateConsentCookie());
         }