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the hasor Web project.
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/*
 * Copyright 2008-2009 the original author or authors.
 *
 * 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 net.hasor.web;
import net.hasor.core.ApiBinder;
import net.hasor.core.BindInfo;
import net.hasor.core.TypeSupplier;
import net.hasor.core.aop.AsmTools;
import net.hasor.core.exts.aop.Matchers;
import net.hasor.core.provider.InstanceProvider;
import net.hasor.utils.ArrayUtils;
import net.hasor.utils.ResourcesUtils;
import net.hasor.web.annotation.MappingTo;
import net.hasor.web.render.Render;
import net.hasor.web.render.RenderEngine;

import javax.servlet.Filter;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServlet;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.lang.reflect.Modifier;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.*;
import java.util.function.Predicate;
import java.util.function.Supplier;

/**
 * 提供了注册Servlet和Filter的方法。
 * @version : 2016-12-26
 * @author 赵永春 ([email protected])
 */
public interface WebApiBinder extends ApiBinder, MimeType {
    /**获取ServletContext对象。*/
    public ServletContext getServletContext();

    /** 设置请求编码 */
    public WebApiBinder setRequestCharacter(String encoding);

    /** 设置响应编码 */
    public WebApiBinder setResponseCharacter(String encoding);

    /** 设置请求响应编码 */
    public default WebApiBinder setEncodingCharacter(String requestEncoding, String responseEncoding) {
        return this.setRequestCharacter(requestEncoding).setResponseCharacter(responseEncoding);
    }

    /**获取容器支持的Servlet版本。*/
    public ServletVersion getServletVersion();

    /**使用 MappingTo 表达式，创建一个{@link ServletBindingBuilder}。*/
    public default ServletBindingBuilder jeeServlet(String urlPattern, String... morePatterns) {
        return this.jeeServlet(ArrayUtils.add(morePatterns, urlPattern));
    }

    /**使用 MappingTo 表达式，创建一个{@link ServletBindingBuilder}。*/
    public ServletBindingBuilder jeeServlet(String[] morePatterns);

    /**使用 MappingTo 表达式，创建一个{@link MappingToBindingBuilder}。*/
    public default  MappingToBindingBuilder mappingTo(String urlPattern, String... morePatterns) {
        return this.mappingTo(ArrayUtils.add(morePatterns, urlPattern));
    }

    /**使用 MappingTo 表达式，创建一个{@link MappingToBindingBuilder}。*/
    public  MappingToBindingBuilder mappingTo(String[] morePatterns);

    /** 加载带有 @MappingTo 注解的类。 */
    public default WebApiBinder loadMappingTo(Set> udfTypeSet) {
        return this.loadMappingTo(udfTypeSet, Matchers.anyClass(), null);
    }

    /** 加载带有 @MappingTo 注解的类。 */
    public default WebApiBinder loadMappingTo(Set> mabeUdfTypeSet, Predicate> matcher, TypeSupplier typeSupplier) {
        if (mabeUdfTypeSet != null && !mabeUdfTypeSet.isEmpty()) {
            mabeUdfTypeSet.stream()//
                    .filter(matcher)//
                    .filter(Matchers.annotatedWithClass(MappingTo.class))//
                    .forEach(aClass -> loadMappingTo(aClass, typeSupplier));
        }
        return this;
    }

    /** 加载带有 @MappingTo 注解的类。 */
    public default WebApiBinder loadMappingTo(Class mappingType) {
        return loadMappingTo(mappingType, null);
    }

    /** 加载带有 @MappingTo 注解的类。 */
    public default WebApiBinder loadMappingTo(Class mappingType, final TypeSupplier typeSupplier) {
        Objects.requireNonNull(mappingType, "class is null.");
        int modifier = mappingType.getModifiers();
        if (AsmTools.checkOr(modifier, Modifier.INTERFACE, Modifier.ABSTRACT) || mappingType.isArray() || mappingType.isEnum()) {
            throw new IllegalStateException(mappingType.getName() + " must be normal Bean");
        }
        MappingTo[] annotationsByType = mappingType.getAnnotationsByType(MappingTo.class);
        if (annotationsByType == null || annotationsByType.length == 0) {
            throw new IllegalStateException(mappingType.getName() + " must be configure @MappingTo");
        }
        //
        if (HttpServlet.class.isAssignableFrom(mappingType)) {
            final Class httpServletType = (Class) mappingType;
            Arrays.stream(annotationsByType).peek(mappingTo -> {
            }).forEach(mappingTo -> {
                if (!isSingleton(mappingType)) {
                    throw new IllegalStateException("HttpServlet " + mappingType + " must be Singleton.");
                }
                if (typeSupplier != null) {
                    jeeServlet(mappingTo.value()).with(() -> typeSupplier.get(httpServletType));
                } else {
                    jeeServlet(mappingTo.value()).with(httpServletType);
                }
            });
        } else {
            final Class