Taxes.java

/**
 * Copyright (C) 2013 Premium Minds.
 *
 * This file is part of billy portugal (PT Pack).
 *
 * billy portugal (PT Pack) is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option) any
 * later version.
 *
 * billy portugal (PT Pack) is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with billy portugal (PT Pack). If not, see <http://www.gnu.org/licenses/>.
 */
package com.premiumminds.billy.portugal.util;

import com.google.inject.Injector;
import com.premiumminds.billy.portugal.Config;
import com.premiumminds.billy.portugal.persistence.dao.DAOPTTax;
import com.premiumminds.billy.portugal.services.entities.PTTax;
import com.premiumminds.billy.portugal.services.persistence.PTTaxPersistenceService;

/**
 * Encapsulates all tax information for Billy PT-Module.
 */
public class Taxes {

	Config	configuration	= new Config();

	/**
	 * Provides Continent tax information
	 */
	public class Continent {

		/**
		 * @return Normal VAT value for Continent.
		 */
		public PTTax normal() {
			DAOPTTax dao = Taxes.this.getInstance(DAOPTTax.class);
			return (PTTax) dao
					.get(Taxes.this.configuration
							.getUID(Config.Key.Context.Portugal.Continental.VAT.NORMAL_UUID));
		}

		/**
		 * @return Intermediate VAT value for Continent.
		 */
		public PTTax intermediate() {
			DAOPTTax dao = Taxes.this.getInstance(DAOPTTax.class);
			return (PTTax) dao
					.get(Taxes.this.configuration
							.getUID(Config.Key.Context.Portugal.Continental.VAT.INTERMEDIATE_UUID));
		}

		/**
		 * @return Reduced VAT value for Continent.
		 */
		public PTTax reduced() {
			DAOPTTax dao = Taxes.this.getInstance(DAOPTTax.class);
			return (PTTax) dao
					.get(Taxes.this.configuration
							.getUID(Config.Key.Context.Portugal.Continental.VAT.REDUCED_UUID));
		}

	}

	/**
	 * Provides Madeira tax information
	 */
	public class Madeira {

		/**
		 * @return Normal VAT value for Madeira.
		 */
		public PTTax normal() {
			DAOPTTax dao = Taxes.this.getInstance(DAOPTTax.class);
			return (PTTax) dao
					.get(Taxes.this.configuration
							.getUID(Config.Key.Context.Portugal.Madeira.VAT.NORMAL_UUID));
		}

		/**
		 * @return Intermediate VAT value for Madeira.
		 */
		public PTTax intermediate() {
			DAOPTTax dao = Taxes.this.getInstance(DAOPTTax.class);
			return (PTTax) dao
					.get(Taxes.this.configuration
							.getUID(Config.Key.Context.Portugal.Madeira.VAT.INTERMEDIATE_UUID));
		}

		/**
		 * @return Reduced VAT value for Madeira.
		 */
		public PTTax reduced() {
			DAOPTTax dao = Taxes.this.getInstance(DAOPTTax.class);
			return (PTTax) dao
					.get(Taxes.this.configuration
							.getUID(Config.Key.Context.Portugal.Madeira.VAT.REDUCED_UUID));
		}

	}

	/**
	 * Provides Azores tax information
	 */
	public class Azores {

		/**
		 * @return Normal VAT value for Azores.
		 */
		public PTTax normal() {
			DAOPTTax dao = Taxes.this.getInstance(DAOPTTax.class);
			return (PTTax) dao
					.get(Taxes.this.configuration
							.getUID(Config.Key.Context.Portugal.Azores.VAT.NORMAL_UUID));
		}

		/**
		 * @return Intermediate VAT value for Azores.
		 */
		public PTTax intermediate() {
			DAOPTTax dao = Taxes.this.getInstance(DAOPTTax.class);
			return (PTTax) dao
					.get(Taxes.this.configuration
							.getUID(Config.Key.Context.Portugal.Azores.VAT.INTERMEDIATE_UUID));
		}

		/**
		 * @return Reduced VAT value for Azores.
		 */
		public PTTax reduced() {
			DAOPTTax dao = Taxes.this.getInstance(DAOPTTax.class);
			return (PTTax) dao
					.get(Taxes.this.configuration
							.getUID(Config.Key.Context.Portugal.Azores.VAT.REDUCED_UUID));
		}

	}

	/**
	 * @return Exemption tax value.
	 */
	public PTTax exempt() {
		DAOPTTax dao = this.getInstance(DAOPTTax.class);
		return (PTTax) dao.get(this.configuration
				.getUID(Config.Key.Context.Portugal.TAX_EXEMPT_UUID));
	}

	private final Continent	continent;
	private final Madeira	madeira;
	private final Azores	azores;
	private final Injector	injector;
	private final PTTaxPersistenceService persistenceService;

	public Taxes(Injector injector) {
		this.continent = new Continent();
		this.madeira = new Madeira();
		this.azores = new Azores();
		this.injector = injector;
		this.persistenceService = getInstance(PTTaxPersistenceService.class);
	}

	/**
	 * @return Portuguese tax information from {@link Continent} region.
	 */
	public Continent continent() {
		return this.continent;
	}

	/**
	 * @return Portuguese tax information from {@link Madeira} island.
	 */
	public Madeira madeira() {
		return this.madeira;
	}

	/**
	 * @return Portuguese tax information from {@link Azores} island.
	 */
	public Azores azores() {
		return this.azores;
	}
	
	public PTTaxPersistenceService persistence() {
		return this.persistenceService;
	}

	private <T> T getInstance(Class<T> clazz) {
		return this.injector.getInstance(clazz);
	}
}