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package org.loom.appengine.guice;

import java.util.List;

import org.loom.appengine.converter.CursorConverter;
import org.loom.appengine.converter.GeoPtConverter;
import org.loom.appengine.converter.KeyConverter;
import org.loom.appengine.converter.LinkConverter;
import org.loom.appengine.converter.RootKeyConverterFactory;
import org.loom.appengine.converter.TextConverter;
import org.loom.appengine.json.CursorJacksonMixin;
import org.loom.appengine.json.GeoPtJacksonMixin;
import org.loom.appengine.json.KeyJacksonMixin;
import org.loom.appengine.json.LinkJacksonMixin;
import org.loom.appengine.json.TextJacksonMixin;
import org.loom.converter.AnnotationDrivenConverterFactory;
import org.loom.converter.Converter;
import org.loom.guice.Plugins;

import com.google.appengine.api.datastore.Cursor;
import com.google.appengine.api.datastore.GeoPt;
import com.google.appengine.api.datastore.Key;
import com.google.appengine.api.datastore.Link;
import com.google.appengine.api.datastore.Text;
import com.google.appengine.repackaged.com.google.common.collect.Lists;
import com.google.inject.AbstractModule;

/**
 * Registers Converters and Jackson Mixins to work with AppEngine classes
 * @author icoloma
 */
public class LoomAppEngineModule extends AbstractModule {

	/** true to include {@link Cursor} support */
	private boolean cursors;
	
	/** true to include {@link Key} support */
	private boolean keys;
	
	/** true to include {@link Text} support */
	private boolean text;
	
	/** true to include {@link GeoPt} support */
	private boolean geopt;
	
	/** true to include {@link Link} support */
	private boolean link;
	
	@Override
	protected void configure() {
		List jacksonMixins = Lists.newArrayList();
		List> converters = Lists.newArrayList();
		List> converterFactories = Lists.newArrayList();
		if (cursors) {
			converters.add(CursorConverter.class);
			jacksonMixins.add(CursorJacksonMixin.class);
		}
		if (geopt) {
			converters.add(GeoPtConverter.class);
			jacksonMixins.add(GeoPtJacksonMixin.class);
		}
		if (keys) {
			converters.add(KeyConverter.class);
			converterFactories.add(RootKeyConverterFactory.class);
			jacksonMixins.add(KeyJacksonMixin.class);
		}
		if (link) {
			converters.add(LinkConverter.class);
			jacksonMixins.add(LinkJacksonMixin.class);
		}
		if (text) {
			converters.add(TextConverter.class);
			jacksonMixins.add(TextJacksonMixin.class);
		}
		Plugins.bindJacksonMixins(binder(), jacksonMixins);
		Plugins.bindConverters(binder(), converters);
		Plugins.bindConverterFactories(binder(), converterFactories);
	}


	public LoomAppEngineModule withCursors() {
		this.cursors = true;
		return this;
	}


	public LoomAppEngineModule withKeys() {
		this.keys = true;
		return this;
	}


	public LoomAppEngineModule withTexts() {
		this.text = true;
		return this;
	}


	public LoomAppEngineModule withGeopts() {
		this.geopt = true;
		return this;
	}


	public LoomAppEngineModule withLinks() {
		this.link = true;
		return this;
	}

}