data/src/main/java/one/nem/kidshift/data/retrofit/interceptor/AuthorizationInterceptor.java

@@ -1,4 +1,44 @@
 package one.nem.kidshift.data.retrofit.interceptor;
 
-public class AuthorizationInterceptor {
+import androidx.annotation.NonNull;
+
+import java.io.IOException;
+
+import javax.inject.Inject;
+
+import okhttp3.Interceptor;
+import okhttp3.Response;
+import one.nem.kidshift.data.UserSettings;
+
+public class AuthorizationInterceptor implements Interceptor {
+
+    private static final String HEADER_NAME = "Authorization";
+    private static final String HEADER_VALUE = "VALUE";
+    public static final String HEADER_PLACEHOLDER = HEADER_NAME + ": " + HEADER_VALUE;
+
+    private final UserSettings userSettings;
+
+    @Inject
+    public AuthorizationInterceptor(UserSettings userSettings) {
+        this.userSettings = userSettings;
+    }
+
+    @NonNull
+    @Override
+    public Response intercept(@NonNull Chain chain) throws IOException {
+        try {
+            if (chain.request().header(HEADER_NAME) == null) {
+                return chain.proceed(chain.request());
+            }
+            if (!HEADER_VALUE.equals(chain.request().header(HEADER_NAME))) {
+                return chain.proceed(chain.request());
+            }
+
+            return chain.proceed(chain.request().newBuilder()
+                    .header(HEADER_NAME, userSettings.getAppCommonSetting().getAccessToken())
+                    .build());
+        } catch (Exception e) {
+            return chain.proceed(chain.request());
+        }
+    }
 }