Use new Bandcamp autocomplete api

Author: litetex

extractor/src/main/java/org/schabi/newpipe/extractor/services/bandcamp/extractors/BandcampSuggestionExtractor.java

@@ -7,22 +7,24 @@
 import com.grack.nanojson.JsonObject;
 import com.grack.nanojson.JsonParser;
 import com.grack.nanojson.JsonParserException;
+import com.grack.nanojson.JsonWriter;
 
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.StreamingService;
 import org.schabi.newpipe.extractor.downloader.Downloader;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.suggestion.SuggestionExtractor;
-import org.schabi.newpipe.extractor.utils.Utils;
 
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import java.util.Collections;
 import java.util.List;
 import java.util.stream.Collectors;
 
 public class BandcampSuggestionExtractor extends SuggestionExtractor {
 
-    private static final String AUTOCOMPLETE_URL = BASE_API_URL + "/fuzzysearch/1/autocomplete?q=";
+    private static final String AUTOCOMPLETE_URL = BASE_API_URL
+            + "/bcsearch_public_api/1/autocomplete_elastic";
     public BandcampSuggestionExtractor(final StreamingService service) {
         super(service);
     }
@@ -33,7 +35,18 @@ public List<String> suggestionList(final String query) throws IOException, Extra
 
         try {
             final JsonObject fuzzyResults = JsonParser.object().from(downloader
-                    .get(AUTOCOMPLETE_URL + Utils.encodeUrlUtf8(query)).responseBody());
+                    .postWithContentTypeJson(
+                            AUTOCOMPLETE_URL,
+                            Collections.emptyMap(),
+                            JsonWriter.string()
+                                    .object()
+                                    .value("fan_id", (String) null)
+                                    .value("full_page", false)
+                                    .value("search_filter", "")
+                                    .value("search_text", query)
+                                    .end()
+                                    .done()
+                                    .getBytes(StandardCharsets.UTF_8)).responseBody());
 
             return fuzzyResults.getObject("auto").getArray("results").stream()
                     .filter(JsonObject.class::isInstance)