content: package act.inject.util;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2017 ActFramework
   * %%
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   * 
   *      http://www.apache.org/licenses/LICENSE-2.0
   * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   * #L%
   */
  
  import act.Act;
  import com.alibaba.fastjson.TypeReference;
  import org.osgl.$;
  import org.osgl.inject.BeanSpec;
  import org.osgl.inject.Genie;
  import org.osgl.inject.Injector;
  import org.osgl.util.C;
  import org.osgl.util.E;
  import org.osgl.util.S;
  
  import java.util.Map;
  
  public class ConfigResourceLoader extends ResourceLoader {
  
      private boolean ignoreResourceNotFound;
  
      public ConfigResourceLoader() {
      }
  
      public ConfigResourceLoader(boolean ignoreResourceNotFound) {
          this.ignoreResourceNotFound = ignoreResourceNotFound;
      }
  
      @Override
      protected void initialized() {
          String path = (String) options.get("value");
          E.unexpectedIf(S.blank(path), "resource path not specified");
          while (path.startsWith("/")) {
              path = path.substring(1);
          }
          if (path.startsWith("config/")) {
              path = path.substring(7);
          }
          resource = ResourceLoader._load(profileConfig(path), spec, hint, true);
          if (null == resource) {
              resource = ResourceLoader._load(commonConfig(path), spec, hint, true);
          }
          if (null == resource) {
              resource = ResourceLoader._load(confConfig(path), spec, hint, true);
          }
          if (null == resource) {
              resource = ResourceLoader._load(path, spec, hint, true);
          }
          if (null == resource && !ignoreResourceNotFound) {
              LOGGER.warn("config resource not found: %s", path);
          }
      }
  
      private void init(Map options, BeanSpec spec, Object hint) {
          super.init(options, spec);
          this.hint = hint;
      }
  
      private String profileConfig(String path) {
          return S.concat("conf/", Act.profile(), "/", path);
      }
  
      private String commonConfig(String path) {
          return S.concat("conf/common/", path);
      }
  
      private String confConfig(String path) {
          return S.concat("conf/", path);
      }
  
      private static Injector injector = Genie.create();
  
      /**
       * A static method to load resource favor the profile configuration.
       *
       * If any exception encountered during resource load, this method returns `null`
       *
       * @param path the relative path to the resource
       * @param type the return value type
       * @param <T> generic type of return value
       * @return loaded resource or `null` if exception encountered.
       */
      public static <T> T load(String path, Class<T> type) {
          return load(path, type, null, false);
      }
  
      public static <T> T load(String path, Class<T> type, Object hint) {
          return load(path, type, hint, false);
      }
  
      public static <T> T load(String path, Class<T> type, boolean ignoreResourceNotFound) {
          return load(path, type, null, ignoreResourceNotFound);
      }
  
      public static <T> T load(String path, Class<T> type, Object hint, boolean ignoreResourceNotFound) {
          return __load(path, BeanSpec.of(type, injector), hint, ignoreResourceNotFound);
      }
  
      /**
       * A static method to load resource favor the profile configuration.
       *
       * If any exception encountered during resource load, this method returns `null`
       *
       * @param path the relative path to the resource
       * @param typeReference the return value type
       * @param <T> generic type of return value
       * @return loaded resource or `null` if exception encountered.
       */
      public static <T> T load(String path, TypeReference<T> typeReference) {
          return load(path, typeReference, null, false);
      }
  
      public static <T> T load(String path, TypeReference<T> typeReference, boolean ignoreResourceNotFound) {
          return load(path, typeReference, null, ignoreResourceNotFound);
      }
  
      public static <T> T load(String path, TypeReference<T> typeReference, Object hint) {
          return load(path, typeReference, hint, false);
      }
  
      public static <T> T load(String path, TypeReference<T> typeReference, Object hint, boolean ignoreResourceNotFound) {
          BeanSpec spec = BeanSpec.of(typeReference.getType(), injector);
          return __load(path, spec, hint, ignoreResourceNotFound);
      }
  
      /**
       * A static method to load resource favor the profile configuration.
       *
       * If any exception encountered during resource load, this method returns `null`
       *
       * @param path the relative path to the resource
       * @param spec bean spec specifies return value type
       * @param <T> generic type of return value
       * @return loaded resource or `null` if exception encountered.
       */
      public static <T> T load(String path, BeanSpec spec) {
          return load(path, spec, null, false);
      }
  
      public static <T> T load(String path, BeanSpec spec, boolean ignoreResourceNotFound) {
          return load(path, spec, null, ignoreResourceNotFound);
      }
  
      public static <T> T load(String path, BeanSpec spec, Object hint) {
          return load(path, spec, hint, false);
      }
  
      public static <T> T load(String path, BeanSpec spec, Object hint, boolean ignoreResourceNotFound) {
          return __load(path, spec, hint, ignoreResourceNotFound);
      }
  
      private static <T> T __load(String path, BeanSpec spec, Object hint, boolean ignoreResourceNotFound) {
          Map<String, Object> option = C.Map("value", path);
          ConfigResourceLoader loader = new ConfigResourceLoader(ignoreResourceNotFound);
          loader.init(option, spec, hint);
          return $.cast(loader.resource);
      }
  
  }
  