content: /**
   * Copyright (C) 2010-2016 eBusiness Information, Excilys Group
   * Copyright (C) 2016-2020 the AndroidAnnotations project
   *
   * 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.
   */
  package org.androidannotations.internal.core.handler;
  
  import static com.helger.jcodemodel.JExpr.cast;
  
  import javax.lang.model.element.Element;
  import javax.lang.model.element.TypeElement;
  import javax.lang.model.type.TypeMirror;
  
  import org.androidannotations.AndroidAnnotationsEnvironment;
  import org.androidannotations.ElementValidation;
  import org.androidannotations.annotations.SystemService;
  import org.androidannotations.handler.BaseAnnotationHandler;
  import org.androidannotations.handler.MethodInjectionHandler;
  import org.androidannotations.helper.CanonicalNameConstants;
  import org.androidannotations.helper.InjectHelper;
  import org.androidannotations.holder.EComponentHolder;
  import org.androidannotations.internal.core.model.AndroidSystemServices;
  
  import com.helger.jcodemodel.AbstractJClass;
  import com.helger.jcodemodel.IJAssignmentTarget;
  import com.helger.jcodemodel.IJExpression;
  import com.helger.jcodemodel.JBlock;
  import com.helger.jcodemodel.JFieldRef;
  import com.helger.jcodemodel.JInvocation;
  import com.helger.jcodemodel.JOp;
  
  public class SystemServiceHandler extends BaseAnnotationHandler<EComponentHolder> implements MethodInjectionHandler<EComponentHolder> {
  
  	private final InjectHelper<EComponentHolder> injectHelper;
  
  	public SystemServiceHandler(AndroidAnnotationsEnvironment environment) {
  		super(SystemService.class, environment);
  		injectHelper = new InjectHelper<>(validatorHelper, this);
  	}
  
  	@Override
  	public void validate(Element element, ElementValidation validation) {
  		injectHelper.validate(SystemService.class, element, validation);
  		if (!validation.isValid()) {
  			return;
  		}
  
  		validatorHelper.androidService(element, validation);
  
  		validatorHelper.isNotPrivate(element, validation);
  	}
  
  	@Override
  	public void process(Element element, EComponentHolder holder) {
  		injectHelper.process(element, holder);
  	}
  
  	@Override
  	public JBlock getInvocationBlock(EComponentHolder holder) {
  		return holder.getInitBodyInjectionBlock();
  	}
  
  	@Override
  	public void assignValue(JBlock targetBlock, IJAssignmentTarget fieldRef, EComponentHolder holder, Element element, Element param) {
  		TypeMirror serviceType = param.asType();
  		String fieldTypeQualifiedName = serviceType.toString();
  
  		JFieldRef serviceRef = new AndroidSystemServices(getEnvironment()).getServiceConstantRef(serviceType);
  		if (CanonicalNameConstants.APP_WIDGET_MANAGER.equals(fieldTypeQualifiedName)) {
  			targetBlock.add(fieldRef.assign(createSpecialInjection(holder, fieldTypeQualifiedName, serviceRef, 21, "LOLLIPOP", getClasses().APP_WIDGET_MANAGER, "getInstance", true)));
  		} else {
  			targetBlock.add(fieldRef.assign(createNormalInjection(holder, fieldTypeQualifiedName, serviceRef)));
  		}
  	}
  
  	@SuppressWarnings("checkstyle:parameternumber")
  	private IJExpression createSpecialInjection(EComponentHolder holder, String fieldTypeQualifiedName, JFieldRef serviceRef, int apiLevel, String apiLevelName, AbstractJClass serviceClass,
  			String injectionMethodName, boolean invocationRequiresContext) {
  		if (getEnvironment().getAndroidManifest().getMinSdkVersion() >= apiLevel) {
  			return createNormalInjection(holder, fieldTypeQualifiedName, serviceRef);
  		} else {
  			JInvocation serviceClassInvocation = serviceClass.staticInvoke(injectionMethodName);
  			if (invocationRequiresContext) {
  				serviceClassInvocation.arg(holder.getContextRef());
  			}
  			if (isApiOnClasspath(apiLevelName)) {
  				IJExpression condition = getClasses().BUILD_VERSION.staticRef("SDK_INT").gte(getClasses().BUILD_VERSION_CODES.staticRef(apiLevelName));
  				IJExpression normalInjection = createNormalInjection(holder, fieldTypeQualifiedName, serviceRef);
  				return JOp.cond(condition, normalInjection, serviceClassInvocation);
  			} else {
  				return serviceClassInvocation;
  			}
  		}
  	}
  
  	private IJExpression createNormalInjection(EComponentHolder holder, String fieldTypeQualifiedName, JFieldRef serviceRef) {
  		return cast(getJClass(fieldTypeQualifiedName), getAppropriateContextRef(holder, fieldTypeQualifiedName).invoke("getSystemService").arg(serviceRef));
  	}
  
  	private IJExpression getAppropriateContextRef(EComponentHolder holder, String fieldTypeQualifiedName) {
  		if (CanonicalNameConstants.WIFI_MANAGER.equals(fieldTypeQualifiedName) || CanonicalNameConstants.AUDIO_MANAGER.equals(fieldTypeQualifiedName)) {
  			return holder.getContextRef().invoke("getApplicationContext");
  		}
  
  		return holder.getContextRef();
  	}
  
  	private boolean isApiOnClasspath(String apiName) {
  		TypeElement typeElement = getProcessingEnvironment().getElementUtils().getTypeElement(CanonicalNameConstants.BUILD_VERSION_CODES);
  		for (Element element : typeElement.getEnclosedElements()) {
  			if (element.getSimpleName().contentEquals(apiName)) {
  				return true;
  			}
  		}
  		return false;
  	}
  
  	@Override
  	public void validateEnclosingElement(Element element, ElementValidation valid) {
  		validatorHelper.enclosingElementHasEnhancedComponentAnnotation(element, valid);
  	}
  }
  