Create common suggestions task that is extended by Duck and Google suggestions
Also remove old suggestions task that was unused
This commit is contained in:
Anthony Restaino
parent
9c8281f56c
commit
84dd37d51d
@ -4,58 +4,53 @@ import android.app.Application;
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import android.content.Context;
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import android.net.ConnectivityManager;
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import android.net.NetworkInfo;
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import android.os.AsyncTask;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import android.text.TextUtils;
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import android.util.Log;
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import org.xmlpull.v1.XmlPullParser;
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import org.xmlpull.v1.XmlPullParserException;
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import org.xmlpull.v1.XmlPullParserFactory;
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import java.io.BufferedInputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.InputStream;
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import java.io.UnsupportedEncodingException;
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import java.lang.ref.WeakReference;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.net.URLEncoder;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Locale;
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import java.util.regex.Pattern;
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import java.util.concurrent.TimeUnit;
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import java.util.zip.GZIPInputStream;
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import javax.net.ssl.HttpsURLConnection;
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import acr.browser.lightning.R;
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import acr.browser.lightning.database.HistoryItem;
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import acr.browser.lightning.utils.Utils;
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class RetrieveSuggestionsTask extends AsyncTask<Void, Void, List<HistoryItem>> {
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abstract class BaseSuggestionsTask {
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private static final String TAG = RetrieveSuggestionsTask.class.getSimpleName();
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private static final String TAG = BaseSuggestionsTask.class.getSimpleName();
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private static final Pattern SPACE_PATTERN = Pattern.compile(" ", Pattern.LITERAL);
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private static final String CACHE_FILE_TYPE = ".sgg";
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private static final String ENCODING = "ISO-8859-1";
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private static final long INTERVAL_DAY = 86400000;
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private static final long INTERVAL_DAY = TimeUnit.DAYS.toMillis(1);
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private static final String DEFAULT_LANGUAGE = "en";
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@Nullable private static XmlPullParser sXpp;
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@Nullable private static String sLanguage;
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@NonNull private final WeakReference<SuggestionsResult> mResultCallback;
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@NonNull private final SuggestionsResult mResultCallback;
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@NonNull private final Application mApplication;
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@NonNull private final String mSearchSubtitle;
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@NonNull private String mQuery;
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public RetrieveSuggestionsTask(@NonNull String query,
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@NonNull SuggestionsResult callback,
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@NonNull Application application) {
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protected abstract String getQueryUrl(@NonNull String query, @NonNull String language);
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protected abstract void parseResults(FileInputStream inputStream, List<HistoryItem> results) throws Exception;
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protected abstract String getEncoding();
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BaseSuggestionsTask(@NonNull String query,
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@NonNull Application application,
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@NonNull SuggestionsResult callback) {
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mQuery = query;
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mResultCallback = new WeakReference<>(callback);
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mResultCallback = callback;
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mApplication = application;
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mSearchSubtitle = mApplication.getString(R.string.suggestion);
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}
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@NonNull
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@ -69,63 +64,34 @@ class RetrieveSuggestionsTask extends AsyncTask<Void, Void, List<HistoryItem>> {
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return sLanguage;
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}
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@NonNull
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private static synchronized XmlPullParser getParser() throws XmlPullParserException {
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if (sXpp == null) {
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XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
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factory.setNamespaceAware(true);
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sXpp = factory.newPullParser();
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}
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return sXpp;
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}
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@NonNull
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@Override
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protected List<HistoryItem> doInBackground(Void... voids) {
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void run() {
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List<HistoryItem> filter = new ArrayList<>(5);
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try {
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mQuery = SPACE_PATTERN.matcher(mQuery).replaceAll("+");
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URLEncoder.encode(mQuery, ENCODING);
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mQuery = URLEncoder.encode(mQuery, getEncoding());
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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Log.e(TAG, "Unable to encode the URL", e);
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}
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File cache = downloadSuggestionsForQuery(mQuery, getLanguage(), mApplication);
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if (!cache.exists()) {
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return filter;
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post(filter);
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return;
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}
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InputStream fileInput = null;
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FileInputStream fileInput = null;
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try {
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fileInput = new BufferedInputStream(new FileInputStream(cache));
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XmlPullParser parser = getParser();
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parser.setInput(fileInput, ENCODING);
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int eventType = parser.getEventType();
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int counter = 0;
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while (eventType != XmlPullParser.END_DOCUMENT) {
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if (eventType == XmlPullParser.START_TAG && "suggestion".equals(parser.getName())) {
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String suggestion = parser.getAttributeValue(null, "data");
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filter.add(new HistoryItem(mSearchSubtitle + " \"" + suggestion + '"',
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suggestion, R.drawable.ic_search));
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counter++;
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if (counter >= 5) {
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break;
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}
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}
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eventType = parser.next();
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}
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fileInput = new FileInputStream(cache);
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parseResults(fileInput, filter);
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} catch (Exception e) {
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return filter;
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post(filter);
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Log.e(TAG, "Unable to parse results", e);
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return;
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} finally {
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Utils.close(fileInput);
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}
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return filter;
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post(filter);
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}
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@Override
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protected void onPostExecute(@NonNull List<HistoryItem> result) {
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SuggestionsResult callback = mResultCallback.get();
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if (callback != null) {
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callback.resultReceived(result);
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}
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private void post(@NonNull List<HistoryItem> result) {
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mResultCallback.resultReceived(result);
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}
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/**
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@ -136,8 +102,9 @@ class RetrieveSuggestionsTask extends AsyncTask<Void, Void, List<HistoryItem>> {
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* @return the cache file containing the suggestions
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*/
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@NonNull
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private static File downloadSuggestionsForQuery(@NonNull String query, String language, @NonNull Application app) {
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File cacheFile = new File(app.getCacheDir(), query.hashCode() + CACHE_FILE_TYPE);
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private File downloadSuggestionsForQuery(@NonNull String query, String language, @NonNull Application app) {
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String queryUrl = getQueryUrl(query, language);
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File cacheFile = new File(app.getCacheDir(), queryUrl.hashCode() + Suggestions.CACHE_FILE_TYPE);
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if (System.currentTimeMillis() - INTERVAL_DAY < cacheFile.lastModified()) {
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return cacheFile;
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}
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@ -147,22 +114,22 @@ class RetrieveSuggestionsTask extends AsyncTask<Void, Void, List<HistoryItem>> {
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InputStream in = null;
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FileOutputStream fos = null;
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try {
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// Old API that doesn't support HTTPS
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// http://google.com/complete/search?q= + query + &output=toolbar&hl= + language
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URL url = new URL("https://suggestqueries.google.com/complete/search?output=toolbar&hl="
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+ language + "&q=" + query);
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HttpURLConnection connection = (HttpURLConnection) url.openConnection();
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URL url = new URL(queryUrl);
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HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
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connection.setDoInput(true);
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connection.setRequestProperty("Accept-Encoding", "gzip");
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connection.connect();
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if (connection.getResponseCode() >= HttpURLConnection.HTTP_MULT_CHOICE ||
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connection.getResponseCode() < HttpURLConnection.HTTP_OK) {
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connection.getResponseCode() < HttpURLConnection.HTTP_OK) {
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Log.e(TAG, "Search API Responded with code: " + connection.getResponseCode());
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connection.disconnect();
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return cacheFile;
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}
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in = connection.getInputStream();
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if (in != null) {
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in = new GZIPInputStream(in);
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//noinspection IOResourceOpenedButNotSafelyClosed
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fos = new FileOutputStream(cacheFile);
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int buffer;
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@ -190,12 +157,12 @@ class RetrieveSuggestionsTask extends AsyncTask<Void, Void, List<HistoryItem>> {
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@Nullable
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private static NetworkInfo getActiveNetworkInfo(@NonNull Context context) {
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ConnectivityManager connectivity = (ConnectivityManager) context
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.getApplicationContext()
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.getSystemService(Context.CONNECTIVITY_SERVICE);
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.getApplicationContext()
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.getSystemService(Context.CONNECTIVITY_SERVICE);
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if (connectivity == null) {
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return null;
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}
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return connectivity.getActiveNetworkInfo();
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}
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}
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}
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@ -1,202 +1,55 @@
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package acr.browser.lightning.search;
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import android.app.Application;
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import android.content.Context;
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import android.net.ConnectivityManager;
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import android.net.NetworkInfo;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import android.text.TextUtils;
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import android.util.Log;
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import org.json.JSONArray;
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import org.json.JSONObject;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.InputStream;
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import java.io.UnsupportedEncodingException;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.net.URLEncoder;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Locale;
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import java.util.concurrent.TimeUnit;
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import java.util.zip.GZIPInputStream;
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import javax.net.ssl.HttpsURLConnection;
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import acr.browser.lightning.R;
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import acr.browser.lightning.database.HistoryItem;
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import acr.browser.lightning.utils.FileUtils;
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import acr.browser.lightning.utils.Utils;
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/**
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* Copyright 9/10/2016 Anthony Restaino
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* <p/>
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* <p/>
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* http://www.apache.org/licenses/LICENSE-2.0
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* <p/>
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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public final class DuckSuggestionsTask {
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private static final String TAG = RetrieveSuggestionsTask.class.getSimpleName();
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public final class DuckSuggestionsTask extends BaseSuggestionsTask {
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private static final String ENCODING = "UTF-8";
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private static final long INTERVAL_DAY = TimeUnit.DAYS.toMillis(1);
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private static final String DEFAULT_LANGUAGE = "en";
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@Nullable private static String sLanguage;
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@NonNull private final SuggestionsResult mResultCallback;
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@NonNull private final Application mApplication;
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@NonNull private final String mSearchSubtitle;
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@NonNull private String mQuery;
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DuckSuggestionsTask(@NonNull String query,
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@NonNull Application application,
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@NonNull SuggestionsResult callback) {
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mQuery = query;
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mResultCallback = callback;
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mApplication = application;
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mSearchSubtitle = mApplication.getString(R.string.suggestion);
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super(query, application, callback);
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mSearchSubtitle = application.getString(R.string.suggestion);
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}
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@NonNull
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private static synchronized String getLanguage() {
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if (sLanguage == null) {
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sLanguage = Locale.getDefault().getLanguage();
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}
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if (TextUtils.isEmpty(sLanguage)) {
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sLanguage = DEFAULT_LANGUAGE;
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}
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return sLanguage;
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}
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@NonNull
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private static String getQueryUrl(@NonNull String query) {
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@Override
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protected String getQueryUrl(@NonNull String query, @NonNull String language) {
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return "https://duckduckgo.com/ac/?q=" + query;
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}
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void run() {
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List<HistoryItem> filter = new ArrayList<>(5);
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try {
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mQuery = URLEncoder.encode(mQuery, ENCODING);
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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}
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File cache = downloadSuggestionsForQuery(mQuery, getLanguage(), mApplication);
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if (!cache.exists()) {
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post(filter);
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return;
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}
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InputStream fileInput = null;
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try {
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fileInput = new FileInputStream(cache);
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String content = FileUtils.readStringFromFile(fileInput, ENCODING);
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JSONArray jsonArray = new JSONArray(content);
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int counter = 0;
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for (int n = 0, size = jsonArray.length(); n < size; n++) {
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JSONObject object = jsonArray.getJSONObject(n);
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String suggestion = object.getString("phrase");
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filter.add(new HistoryItem(mSearchSubtitle + " \"" + suggestion + '"',
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suggestion, R.drawable.ic_search));
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counter++;
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if (counter >= 5) {
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break;
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}
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@Override
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protected void parseResults(FileInputStream inputStream, List<HistoryItem> results) throws Exception {
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String content = FileUtils.readStringFromFile(inputStream, ENCODING);
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JSONArray jsonArray = new JSONArray(content);
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int counter = 0;
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for (int n = 0, size = jsonArray.length(); n < size; n++) {
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JSONObject object = jsonArray.getJSONObject(n);
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String suggestion = object.getString("phrase");
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results.add(new HistoryItem(mSearchSubtitle + " \"" + suggestion + '"',
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suggestion, R.drawable.ic_search));
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counter++;
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if (counter >= 5) {
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break;
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}
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} catch (Exception e) {
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post(filter);
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e.printStackTrace();
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return;
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} finally {
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Utils.close(fileInput);
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}
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post(filter);
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}
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private void post(@NonNull List<HistoryItem> result) {
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mResultCallback.resultReceived(result);
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}
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/**
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* This method downloads the search suggestions for the specific query.
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* NOTE: This is a blocking operation, do not run on the UI thread.
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*
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* @param query the query to get suggestions for
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* @return the cache file containing the suggestions
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*/
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@NonNull
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private static File downloadSuggestionsForQuery(@NonNull String query, String language, @NonNull Application app) {
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String queryUrl = getQueryUrl(query);
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File cacheFile = new File(app.getCacheDir(), queryUrl.hashCode() + Suggestions.CACHE_FILE_TYPE);
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if (System.currentTimeMillis() - INTERVAL_DAY < cacheFile.lastModified()) {
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return cacheFile;
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}
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if (!isNetworkConnected(app)) {
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return cacheFile;
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}
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InputStream in = null;
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FileOutputStream fos = null;
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try {
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URL url = new URL(queryUrl);
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HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
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connection.setDoInput(true);
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connection.setRequestProperty("Accept-Encoding", "gzip");
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connection.connect();
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if (connection.getResponseCode() >= HttpURLConnection.HTTP_MULT_CHOICE ||
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connection.getResponseCode() < HttpURLConnection.HTTP_OK) {
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Log.e(TAG, "Search API Responded with code: " + connection.getResponseCode());
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connection.disconnect();
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return cacheFile;
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}
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in = connection.getInputStream();
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if (in != null) {
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in = new GZIPInputStream(in);
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//noinspection IOResourceOpenedButNotSafelyClosed
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fos = new FileOutputStream(cacheFile);
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int buffer;
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while ((buffer = in.read()) != -1) {
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fos.write(buffer);
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}
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fos.flush();
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}
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connection.disconnect();
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cacheFile.setLastModified(System.currentTimeMillis());
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} catch (Exception e) {
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Log.w(TAG, "Problem getting search suggestions", e);
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} finally {
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Utils.close(in);
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Utils.close(fos);
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}
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return cacheFile;
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}
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private static boolean isNetworkConnected(@NonNull Context context) {
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NetworkInfo networkInfo = getActiveNetworkInfo(context);
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return networkInfo != null && networkInfo.isConnected();
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}
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@Nullable
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private static NetworkInfo getActiveNetworkInfo(@NonNull Context context) {
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ConnectivityManager connectivity = (ConnectivityManager) context
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.getApplicationContext()
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.getSystemService(Context.CONNECTIVITY_SERVICE);
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if (connectivity == null) {
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return null;
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}
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return connectivity.getActiveNetworkInfo();
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@Override
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protected String getEncoding() {
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return ENCODING;
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}
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}
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@ -1,79 +1,65 @@
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package acr.browser.lightning.search;
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import android.app.Application;
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import android.content.Context;
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import android.net.ConnectivityManager;
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import android.net.NetworkInfo;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import android.text.TextUtils;
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import android.util.Log;
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import org.xmlpull.v1.XmlPullParser;
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import org.xmlpull.v1.XmlPullParserException;
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import org.xmlpull.v1.XmlPullParserFactory;
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import java.io.BufferedInputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.InputStream;
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import java.io.UnsupportedEncodingException;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.net.URLEncoder;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Locale;
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import java.util.concurrent.TimeUnit;
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import java.util.zip.GZIPInputStream;
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import javax.net.ssl.HttpsURLConnection;
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import acr.browser.lightning.R;
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import acr.browser.lightning.database.HistoryItem;
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import acr.browser.lightning.utils.Utils;
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public class GoogleSuggestionsTask {
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|
||||
private static final String TAG = RetrieveSuggestionsTask.class.getSimpleName();
|
||||
public class GoogleSuggestionsTask extends BaseSuggestionsTask {
|
||||
|
||||
private static final String ENCODING = "ISO-8859-1";
|
||||
private static final long INTERVAL_DAY = TimeUnit.DAYS.toMillis(1);
|
||||
private static final String DEFAULT_LANGUAGE = "en";
|
||||
@Nullable private static XmlPullParser sXpp;
|
||||
@Nullable private static String sLanguage;
|
||||
@NonNull private final SuggestionsResult mResultCallback;
|
||||
@NonNull private final Application mApplication;
|
||||
@NonNull private final String mSearchSubtitle;
|
||||
@NonNull private String mQuery;
|
||||
|
||||
GoogleSuggestionsTask(@NonNull String query,
|
||||
@NonNull Application application,
|
||||
@NonNull SuggestionsResult callback) {
|
||||
mQuery = query;
|
||||
mResultCallback = callback;
|
||||
mApplication = application;
|
||||
mSearchSubtitle = mApplication.getString(R.string.suggestion);
|
||||
super(query, application, callback);
|
||||
mSearchSubtitle = application.getString(R.string.suggestion);
|
||||
}
|
||||
|
||||
@NonNull
|
||||
private static synchronized String getLanguage() {
|
||||
if (sLanguage == null) {
|
||||
sLanguage = Locale.getDefault().getLanguage();
|
||||
}
|
||||
if (TextUtils.isEmpty(sLanguage)) {
|
||||
sLanguage = DEFAULT_LANGUAGE;
|
||||
}
|
||||
return sLanguage;
|
||||
}
|
||||
|
||||
@NonNull
|
||||
private static String getQueryUrl(@NonNull String query, @NonNull String language) {
|
||||
protected String getQueryUrl(@NonNull String query, @NonNull String language) {
|
||||
return "https://suggestqueries.google.com/complete/search?output=toolbar&hl="
|
||||
+ language + "&q=" + query;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void parseResults(FileInputStream inputStream, List<HistoryItem> results) throws Exception {
|
||||
BufferedInputStream fileInput = new BufferedInputStream(inputStream);
|
||||
XmlPullParser parser = getParser();
|
||||
parser.setInput(fileInput, ENCODING);
|
||||
int eventType = parser.getEventType();
|
||||
int counter = 0;
|
||||
while (eventType != XmlPullParser.END_DOCUMENT) {
|
||||
if (eventType == XmlPullParser.START_TAG && "suggestion".equals(parser.getName())) {
|
||||
String suggestion = parser.getAttributeValue(null, "data");
|
||||
results.add(new HistoryItem(mSearchSubtitle + " \"" + suggestion + '"',
|
||||
suggestion, R.drawable.ic_search));
|
||||
counter++;
|
||||
if (counter >= 5) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
eventType = parser.next();
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
protected String getEncoding() {
|
||||
return ENCODING;
|
||||
}
|
||||
|
||||
@NonNull
|
||||
private static synchronized XmlPullParser getParser() throws XmlPullParserException {
|
||||
if (sXpp == null) {
|
||||
@ -83,122 +69,4 @@ public class GoogleSuggestionsTask {
|
||||
}
|
||||
return sXpp;
|
||||
}
|
||||
|
||||
void run() {
|
||||
List<HistoryItem> filter = new ArrayList<>(5);
|
||||
try {
|
||||
mQuery = URLEncoder.encode(mQuery, ENCODING);
|
||||
} catch (UnsupportedEncodingException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
File cache = downloadSuggestionsForQuery(mQuery, getLanguage(), mApplication);
|
||||
if (!cache.exists()) {
|
||||
post(filter);
|
||||
return;
|
||||
}
|
||||
InputStream fileInput = null;
|
||||
try {
|
||||
fileInput = new BufferedInputStream(new FileInputStream(cache));
|
||||
XmlPullParser parser = getParser();
|
||||
parser.setInput(fileInput, ENCODING);
|
||||
int eventType = parser.getEventType();
|
||||
int counter = 0;
|
||||
while (eventType != XmlPullParser.END_DOCUMENT) {
|
||||
if (eventType == XmlPullParser.START_TAG && "suggestion".equals(parser.getName())) {
|
||||
String suggestion = parser.getAttributeValue(null, "data");
|
||||
filter.add(new HistoryItem(mSearchSubtitle + " \"" + suggestion + '"',
|
||||
suggestion, R.drawable.ic_search));
|
||||
counter++;
|
||||
if (counter >= 5) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
eventType = parser.next();
|
||||
}
|
||||
} catch (Exception e) {
|
||||
e.printStackTrace();
|
||||
post(filter);
|
||||
return;
|
||||
} finally {
|
||||
Utils.close(fileInput);
|
||||
}
|
||||
post(filter);
|
||||
}
|
||||
|
||||
private void post(@NonNull List<HistoryItem> result) {
|
||||
mResultCallback.resultReceived(result);
|
||||
}
|
||||
|
||||
/**
|
||||
* This method downloads the search suggestions for the specific query.
|
||||
* NOTE: This is a blocking operation, do not run on the UI thread.
|
||||
*
|
||||
* @param query the query to get suggestions for
|
||||
* @return the cache file containing the suggestions
|
||||
*/
|
||||
@NonNull
|
||||
private static File downloadSuggestionsForQuery(@NonNull String query, String language, @NonNull Application app) {
|
||||
String queryUrl = getQueryUrl(query, language);
|
||||
File cacheFile = new File(app.getCacheDir(), queryUrl.hashCode() + Suggestions.CACHE_FILE_TYPE);
|
||||
if (System.currentTimeMillis() - INTERVAL_DAY < cacheFile.lastModified()) {
|
||||
return cacheFile;
|
||||
}
|
||||
if (!isNetworkConnected(app)) {
|
||||
return cacheFile;
|
||||
}
|
||||
InputStream in = null;
|
||||
FileOutputStream fos = null;
|
||||
try {
|
||||
// Old API that doesn't support HTTPS
|
||||
// http://google.com/complete/search?q= + query + &output=toolbar&hl= + language
|
||||
URL url = new URL(queryUrl);
|
||||
HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
|
||||
connection.setDoInput(true);
|
||||
connection.setRequestProperty("Accept-Encoding", "gzip");
|
||||
connection.connect();
|
||||
if (connection.getResponseCode() >= HttpURLConnection.HTTP_MULT_CHOICE ||
|
||||
connection.getResponseCode() < HttpURLConnection.HTTP_OK) {
|
||||
Log.e(TAG, "Search API Responded with code: " + connection.getResponseCode());
|
||||
connection.disconnect();
|
||||
return cacheFile;
|
||||
}
|
||||
in = connection.getInputStream();
|
||||
|
||||
if (in != null) {
|
||||
//noinspection IOResourceOpenedButNotSafelyClosed
|
||||
in = new GZIPInputStream(in);
|
||||
fos = new FileOutputStream(cacheFile);
|
||||
int buffer;
|
||||
while ((buffer = in.read()) != -1) {
|
||||
fos.write(buffer);
|
||||
}
|
||||
fos.flush();
|
||||
}
|
||||
connection.disconnect();
|
||||
cacheFile.setLastModified(System.currentTimeMillis());
|
||||
} catch (Exception e) {
|
||||
Log.w(TAG, "Problem getting search suggestions", e);
|
||||
} finally {
|
||||
Utils.close(in);
|
||||
Utils.close(fos);
|
||||
}
|
||||
return cacheFile;
|
||||
}
|
||||
|
||||
private static boolean isNetworkConnected(@NonNull Context context) {
|
||||
NetworkInfo networkInfo = getActiveNetworkInfo(context);
|
||||
return networkInfo != null && networkInfo.isConnected();
|
||||
}
|
||||
|
||||
@Nullable
|
||||
private static NetworkInfo getActiveNetworkInfo(@NonNull Context context) {
|
||||
ConnectivityManager connectivity = (ConnectivityManager) context
|
||||
.getApplicationContext()
|
||||
.getSystemService(Context.CONNECTIVITY_SERVICE);
|
||||
if (connectivity == null) {
|
||||
return null;
|
||||
}
|
||||
return connectivity.getActiveNetworkInfo();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user