[ANY] Add query helper (#708)

* [ANY] Add query helper

* [ANY] Rename AuthCodePassword field to the uri

---------

Co-authored-by: d3coder <admin@xakeps.dk>

(cherry picked from commit 1ebe68f5b8)

LauncherAPI/src/main/java/pro/gravit/launcher/request/auth/password/AuthCodePassword.java

@@ -3,10 +3,10 @@
 import pro.gravit.launcher.request.auth.AuthRequest;
 
 public class AuthCodePassword implements AuthRequest.AuthPasswordInterface {
-    public final String code;
+    public final String uri;
 
-    public AuthCodePassword(String code) {
+    public AuthCodePassword(String uri) {
-        this.code = code;
+        this.uri = uri;
     }
 
     @Override

LauncherCore/src/main/java/pro/gravit/utils/helper/CommonHelper.java

@@ -5,10 +5,7 @@
 
 import javax.script.ScriptEngine;
 import java.lang.reflect.Type;
-import java.util.Base64;
+import java.util.*;
-import java.util.Collection;
-import java.util.LinkedList;
-import java.util.Locale;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -105,6 +102,13 @@ public static String[] parseCommand(CharSequence line) throws CommandException {
         return result.toArray(new String[0]);
     }
 
+    public static <K, V> V multimapFirstOrNullValue(K key, Map<K, List<V>> params) {
+        List<V> list = params.getOrDefault(key, Collections.emptyList());
+        if (list.isEmpty()) {
+            return null;
+        }
+        return list.getFirst();
+    }
 
     public static GsonBuilder newBuilder() {
         return new GsonBuilder().registerTypeHierarchyAdapter(byte[].class,

LauncherCore/src/main/java/pro/gravit/utils/helper/QueryHelper.java

@@ -0,0 +1,47 @@
+package pro.gravit.utils.helper;
+
+import java.io.UnsupportedEncodingException;
+import java.net.URI;
+import java.net.URLDecoder;
+import java.net.URLEncoder;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.util.*;
+
+public class QueryHelper {
+    public static Map<String, List<String>> splitUriQuery(URI uri) {
+        String query = uri.getRawQuery();
+        if (query == null) {
+            return Collections.emptyMap();
+        }
+        Map<String, List<String>> params = new HashMap<>();
+        String[] split = query.split("&");
+        for (String qParams : split) {
+            String[] splitParams = qParams.split("=");
+            List<String> strings = params.computeIfAbsent(decode(splitParams[0], StandardCharsets.UTF_8),
+                    k -> new ArrayList<>(1));
+            strings.add(decode(splitParams[1], StandardCharsets.UTF_8));
+        }
+        return params;
+    }
+
+    public static String encodeFormPair(String key, String value) {
+        return encode(key, StandardCharsets.UTF_8) + "=" + encode(value, StandardCharsets.UTF_8);
+    }
+
+    private static String encode(String value, Charset charset) {
+        try {
+            return URLEncoder.encode(value, charset.name());
+        } catch (UnsupportedEncodingException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private static String decode(String value, Charset charset) {
+        try {
+            return URLDecoder.decode(value, charset.name());
+        } catch (UnsupportedEncodingException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}