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/*
 * Copyright 2012 Adaptrex, LLC
 *
 * 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 com.adaptrex.core.rest;

import java.util.Map;

import javax.servlet.ServletContext;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.UriInfo;

import com.adaptrex.core.ext.ExtConfig;
import com.adaptrex.core.ext.ModelInstance;
import com.adaptrex.core.persistence.api.AdaptrexPersistenceManager;

public class RestModel {

	private ModelInstance modelInstance;
	
	private ExtConfig extConfig;
	private AdaptrexPersistenceManager orm;
	
	public RestModel(ServletContext context, Class clazz) {
		this(context, clazz, null, null);
	}
	
	public RestModel(ServletContext context, Class clazz, String factoryName) {
		this(context, clazz, null, factoryName);
	}
	
	public RestModel(ServletContext context, Class clazz, UriInfo uriInfo) {
		this(context, clazz, uriInfo, null);
	}
	
	public RestModel(ServletContext context, Class clazz, UriInfo uriInfo, String factoryName) {
		String className = clazz.getSimpleName();
		extConfig = new ExtConfig(context, className, factoryName);
		orm = extConfig.getORMPersistenceManager();
		
		if (uriInfo != null) {
			MultivaluedMap params = uriInfo.getQueryParameters();
			if (params.containsKey("include")) {
				extConfig.setIncludes(params.get("include").get(0));
			}
			if (params.containsKey("exclude")) {
				extConfig.setExcludes(params.get("exclude").get(0));
			}
			if (params.containsKey("associations")) {
				extConfig.setAssociations(params.get("associations").get(0));
			}			
		}
	}

	public RestModel read(Object id) {
		try {
			this.modelInstance = orm.getModelInstance(extConfig, id);
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
		return this;
	}
	
	public RestModel read(String key, Object value) {
		try {
			this.modelInstance = orm.getModelInstance(extConfig, key, value);
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
		return this;
	}	
	
	public RestModel create(Map data) {
		this.modelInstance = orm.createModelInstance(extConfig, data);
		return this;
	}
	
	
	public RestModel update(Object id, Map data) {
		try {
			this.modelInstance = orm.updateModelInstance(extConfig, id, data);
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
		return this;
	}

	public RestModel update(String key, Object value, Map data) {
		try {
			this.modelInstance = orm.updateModelInstance(extConfig, key, value, data);
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
		return this;
	}
	
	
	public RestModel delete(Object id) {
		try {
			this.modelInstance = orm.deleteModelInstance(extConfig, id);
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
		return this;
	}

	public RestModel delete(String key, Object value) {
		try {
			this.modelInstance = orm.deleteModelInstance(extConfig, key, value);
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
		return this;
	}
	
	
	public ModelInstance getModelInstance() {
		return this.modelInstance;
	}
}