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// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
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package org.apache.juneau.jso;

import java.io.*;
import java.util.*;
import java.util.concurrent.*;

import org.apache.juneau.*;
import org.apache.juneau.annotation.*;
import org.apache.juneau.parser.*;

/**
 * Parses POJOs from HTTP responses as Java {@link ObjectInputStream ObjectInputStreams}.
 *
 * <h5 class='topic'>Media types</h5>
 *
 * Consumes <c>Content-Type</c> types:  <bc>application/x-java-serialized-object</bc>
 */
@ConfigurableContext
public final class JsoParser extends InputStreamParser implements JsoMetaProvider, JsoCommon {

	//-------------------------------------------------------------------------------------------------------------------
	// Configurable properties
	//-------------------------------------------------------------------------------------------------------------------

	static final String PREFIX = "JsoParser";

	//-------------------------------------------------------------------------------------------------------------------
	// Predefined instances
	//-------------------------------------------------------------------------------------------------------------------

	/** Default parser, all default settings.*/
	public static final JsoParser DEFAULT = new JsoParser(PropertyStore.DEFAULT);

	//-------------------------------------------------------------------------------------------------------------------
	// Instance
	//-------------------------------------------------------------------------------------------------------------------

	private final Map<ClassMeta<?>,JsoClassMeta> jsoClassMetas = new ConcurrentHashMap<>();
	private final Map<BeanPropertyMeta,JsoBeanPropertyMeta> jsoBeanPropertyMetas = new ConcurrentHashMap<>();

	/**
	 * Constructor.
	 *
	 * @param ps The property store containing all the settings for this object.
	 */
	public JsoParser(PropertyStore ps) {
		super(ps, "application/x-java-serialized-object");
	}

	@Override /* Context */
	public JsoParserBuilder builder() {
		return new JsoParserBuilder(getPropertyStore());
	}

	/**
	 * Instantiates a new clean-slate {@link JsoParserBuilder} object.
	 *
	 * <p>
	 * This is equivalent to simply calling <code><jk>new</jk> JsoParserBuilder()</code>.
	 *
	 * <p>
	 * Note that this method creates a builder initialized to all default settings, whereas {@link #builder()} copies
	 * the settings of the object called on.
	 *
	 * @return A new {@link JsoParserBuilder} object.
	 */
	public static JsoParserBuilder create() {
		return new JsoParserBuilder();
	}

	@Override /* Parser */
	public JsoParserSession createSession() {
		return createSession(createDefaultSessionArgs());
	}

	@Override /* Parser */
	public JsoParserSession createSession(ParserSessionArgs args) {
		return new JsoParserSession(args);
	}

	//-----------------------------------------------------------------------------------------------------------------
	// Extended metadata
	//-----------------------------------------------------------------------------------------------------------------

	@Override /* JsoMetaProvider */
	public JsoClassMeta getJsoClassMeta(ClassMeta<?> cm) {
		JsoClassMeta m = jsoClassMetas.get(cm);
		if (m == null) {
			m = new JsoClassMeta(cm, this);
			jsoClassMetas.put(cm, m);
		}
		return m;
	}

	@Override /* JsoMetaProvider */
	public JsoBeanPropertyMeta getJsoBeanPropertyMeta(BeanPropertyMeta bpm) {
		if (bpm == null)
			return JsoBeanPropertyMeta.DEFAULT;
		JsoBeanPropertyMeta m = jsoBeanPropertyMetas.get(bpm);
		if (m == null) {
			m = new JsoBeanPropertyMeta(bpm.getDelegateFor(), this);
			jsoBeanPropertyMetas.put(bpm, m);
		}
		return m;
	}

	//-----------------------------------------------------------------------------------------------------------------
	// Other methods
	//-----------------------------------------------------------------------------------------------------------------

	@Override /* Context */
	public ObjectMap toMap() {
		return super.toMap()
			.append("JsoParser", new DefaultFilteringObjectMap()
			);
	}
}