/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.juneau.httppart;

import static org.apache.juneau.commons.utils.AssertionUtils.*;

import java.lang.reflect.*;

import org.apache.juneau.*;
import org.apache.juneau.parser.*;

/**
 * Base class for implementations of {@link HttpPartParser}
 *
 * <h5 class='section'>Notes:</h5><ul>
 *    <li class='note'>This class is thread safe and reusable.
 * </ul>
 *
 * <h5 class='section'>See Also:</h5><ul>
 *    <li class='link'><a class="doclink" href="https://juneau.apache.org/docs/topics/HttpPartSerializersParsers">HTTP Part Serializers and Parsers</a>
 * </ul>
 */
public abstract class BaseHttpPartParser extends BeanContextable implements HttpPartParser {

   /**
    * Builder class.
    */
   public abstract static class Builder extends BeanContextable.Builder {

      /**
       * Constructor.
       */
      protected Builder() {}

      /**
       * Copy constructor.
       *
       * @param builder The builder to copy.
       *    <br>Cannot be <jk>null</jk>.
       */
      protected Builder(Builder builder) {
         super(assertArgNotNull("builder", builder));
      }
   }

   /**
    * Constructor.
    *
    * @param builder The builder for this object.
    */
   protected BaseHttpPartParser(Builder builder) {
      super(builder);
   }

   @Override /* Overridden from HttpPartParser */
   public <T> ClassMeta<T> getClassMeta(Class<T> c) {
      return BeanContext.DEFAULT.getClassMeta(c);
   }

   @Override /* Overridden from HttpPartParser */
   public <T> ClassMeta<T> getClassMeta(Type t, Type...args) {
      return BeanContext.DEFAULT.getClassMeta(t, args);
   }

   /**
    * Converts the specified input to the specified class type.
    *
    * @param <T> The POJO type to transform the input into.
    * @param partType The part type being parsed.
    *    <br>Can be <jk>null</jk> (will default to {@link HttpPartType#OTHER}).
    * @param schema
    *    Schema information about the part.
    *    <br>Can be <jk>null</jk>.
    *    <br>Not all part parsers use the schema information.
    * @param in The input being parsed.
    *    <br>Can be <jk>null</jk> (will return <jk>null</jk> or use schema default if available).
    * @param toType The POJO type to transform the input into.
    *    <br>Cannot be <jk>null</jk>.
    * @return The parsed value.
    * @throws ParseException Malformed input encountered.
    * @throws SchemaValidationException If the input or resulting HTTP part object fails schema validation.
    */
   public <T> T parse(HttpPartType partType, HttpPartSchema schema, String in, Class<T> toType) throws ParseException, SchemaValidationException {
      return getPartSession().parse(partType, schema, in, getClassMeta(assertArgNotNull("toType", toType)));
   }

   /**
    * Converts the specified input to the specified class type.
    *
    * @param <T> The POJO type to transform the input into.
    * @param partType The part type being parsed.
    *    <br>Can be <jk>null</jk> (will default to {@link HttpPartType#OTHER}).
    * @param schema
    *    Schema information about the part.
    *    <br>Can be <jk>null</jk>.
    *    <br>Not all part parsers use the schema information.
    * @param in The input being parsed.
    *    <br>Can be <jk>null</jk> (will return <jk>null</jk> or use schema default if available).
    * @param toType The POJO type to transform the input into.
    *    <br>Cannot be <jk>null</jk>.
    * @return The parsed value.
    * @throws ParseException Malformed input encountered.
    * @throws SchemaValidationException If the input or resulting HTTP part object fails schema validation.
    */
   public <T> T parse(HttpPartType partType, HttpPartSchema schema, String in, ClassMeta<T> toType) throws ParseException, SchemaValidationException {
      return getPartSession().parse(partType, schema, in, assertArgNotNull("toType", toType));
   }

   /**
    * Converts the specified input to the specified class type.
    *
    * @param <T> The POJO type to transform the input into.
    * @param partType The part type being parsed.
    *    <br>Can be <jk>null</jk> (will default to {@link HttpPartType#OTHER}).
    * @param schema
    *    Schema information about the part.
    *    <br>Can be <jk>null</jk>.
    *    <br>Not all part parsers use the schema information.
    * @param in The input being parsed.
    *    <br>Can be <jk>null</jk> (will return <jk>null</jk> or use schema default if available).
    * @param toType The POJO type to transform the input into.
    *    <br>Cannot be <jk>null</jk>.
    * @param toTypeArgs The generic type arguments of the POJO type to transform the input into.
    *    <br>Cannot contain <jk>null</jk> values.
    * @return The parsed value.
    * @throws ParseException Malformed input encountered.
    * @throws SchemaValidationException If the input or resulting HTTP part object fails schema validation.
    */
   public <T> T parse(HttpPartType partType, HttpPartSchema schema, String in, Type toType, Type...toTypeArgs) throws ParseException, SchemaValidationException {
      assertArgNoNulls("toTypeArgs", toTypeArgs);
      return getPartSession().parse(partType, schema, in, getClassMeta(assertArgNotNull("toType", toType), toTypeArgs));
   }
}