From 2ef2d95fb9e3881d9395784ed53fd8bef5855378 Mon Sep 17 00:00:00 2001
From: Gravit <gravit.min@ya.ru>
Date: Sat, 20 Apr 2019 04:14:56 +0700
Subject: [PATCH] =?UTF-8?q?[FEATURE]=20=D0=A3=D0=BD=D0=B8=D0=B2=D0=B5?=
 =?UTF-8?q?=D1=80=D1=81=D0=B0=D0=BB=D1=8C=D0=BD=D1=8B=D0=B9=20=D0=B0=D0=B4?=
 =?UTF-8?q?=D0=B0=D0=BF=D1=82=D0=B5=D1=80=20=D0=B8=20ProviderMap?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../java/ru/gravit/utils/ProviderMap.java     | 34 +++++++++++++++
 .../ru/gravit/utils/UniversalJsonAdapter.java | 41 +++++++++++++++++++
 2 files changed, 75 insertions(+)
 create mode 100644 libLauncher/src/main/java/ru/gravit/utils/ProviderMap.java
 create mode 100644 libLauncher/src/main/java/ru/gravit/utils/UniversalJsonAdapter.java

diff --git a/libLauncher/src/main/java/ru/gravit/utils/ProviderMap.java b/libLauncher/src/main/java/ru/gravit/utils/ProviderMap.java
new file mode 100644
index 00000000..ce32eef1
--- /dev/null
+++ b/libLauncher/src/main/java/ru/gravit/utils/ProviderMap.java
@@ -0,0 +1,34 @@
+package ru.gravit.utils;
+
+import ru.gravit.utils.helper.VerifyHelper;
+
+import java.util.Map;
+import java.util.Objects;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class ProviderMap<R> {
+    protected final Map<String, Class<? extends R>> PROVIDERS = new ConcurrentHashMap<>(4);
+    protected boolean registredProviders = false;
+
+
+    public void registerProvider(String name, Class<? extends R> adapter) {
+        VerifyHelper.verifyIDName(name);
+        VerifyHelper.putIfAbsent(PROVIDERS, name, Objects.requireNonNull(adapter, "adapter"),
+                String.format("Protect handler has been already registered: '%s'", name));
+    }
+
+    public Class<? extends R> getProviderClass(String name) {
+        return PROVIDERS.get(name);
+    }
+
+    public String getProviderName(Class<? extends R> clazz) {
+        for (Map.Entry<String, Class<? extends R>> e : PROVIDERS.entrySet()) {
+            if (e.getValue().equals(clazz)) return e.getKey();
+        }
+        return null;
+    }
+    public Class<? extends R> unregisterProvider(String name)
+    {
+        return PROVIDERS.remove(name);
+    }
+}
diff --git a/libLauncher/src/main/java/ru/gravit/utils/UniversalJsonAdapter.java b/libLauncher/src/main/java/ru/gravit/utils/UniversalJsonAdapter.java
new file mode 100644
index 00000000..4cd66670
--- /dev/null
+++ b/libLauncher/src/main/java/ru/gravit/utils/UniversalJsonAdapter.java
@@ -0,0 +1,41 @@
+package ru.gravit.utils;
+
+import com.google.gson.*;
+import ru.gravit.utils.helper.LogHelper;
+
+import java.lang.reflect.Type;
+
+public class UniversalJsonAdapter<R> implements JsonSerializer<R>, JsonDeserializer<R> {
+    public ProviderMap<R> providerMap;
+    public String PROP_NAME = "type";
+
+    public UniversalJsonAdapter(ProviderMap<R> providerMap) {
+        this.providerMap = providerMap;
+    }
+
+    public UniversalJsonAdapter(ProviderMap<R> providerMap, String PROP_NAME) {
+        this.providerMap = providerMap;
+        this.PROP_NAME = PROP_NAME;
+    }
+
+    public R deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
+        String typename = json.getAsJsonObject().getAsJsonPrimitive(PROP_NAME).getAsString();
+        Class<? extends R> cls = providerMap.getProviderClass(typename);
+        if (cls == null) {
+            LogHelper.error("AuthHandler %s not found", typename);
+            return null;
+        }
+        return context.deserialize(json, cls);
+    }
+
+    @Override
+    public JsonElement serialize(R src, Type typeOfSrc, JsonSerializationContext context) {
+        JsonObject jo = context.serialize(src).getAsJsonObject();
+
+        @SuppressWarnings("unchecked")
+        String classPath = providerMap.getProviderName((Class<? extends R>) src.getClass());
+        jo.add(PROP_NAME, new JsonPrimitive(classPath));
+
+        return jo;
+    }
+}