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 * Institute of Molecular Cell Biology and Genetics, University of
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package org.scijava.io;

import java.io.IOException;

import org.scijava.plugin.HandlerService;
import org.scijava.service.SciJavaService;

/**
 * Interface for high-level data I/O: opening and saving data.
 * 
 * @author Curtis Rueden
 */
public interface IOService extends HandlerService>,
	SciJavaService
{

	/**
	 * Gets the most appropriate {@link IOPlugin} for opening data from the given
	 * source.
	 */
	default IOPlugin getOpener(final String source) {
		for (final IOPlugin handler : getInstances()) {
			if (handler.supportsOpen(source)) return handler;
		}
		return null;
	}

	/**
	 * Gets the most appropriate {@link IOPlugin} for saving data to the given
	 * destination.
	 */
	default  IOPlugin getSaver(final D data, final String destination) {
		for (final IOPlugin handler : getInstances()) {
			if (handler.supportsSave(data, destination)) {
				@SuppressWarnings("unchecked")
				final IOPlugin typedHandler = (IOPlugin) handler;
				return typedHandler;
			}
		}
		return null;
	}

	/**
	 * Loads data from the given source. For extensibility, the nature of the
	 * source is left intentionally general, but two common examples include file
	 * paths and URLs.
	 * 
	 * The opener to use is automatically determined based on available
	 * {@link IOPlugin}s; see {@link #getOpener(String)}.
	 * 
	 * 
	 * @param source The source (e.g., file path) from which to data should be
	 *          loaded.
	 * @return An object representing the loaded data, or null if the source is
	 *         not supported.
	 * @throws IOException if something goes wrong loading the data.
	 */
	Object open(String source) throws IOException;

	/**
	 * Saves data to the given destination. The nature of the destination is left
	 * intentionally general, but the most common example is a file path.
	 * 
	 * The saver to use is automatically determined based on available
	 * {@link IOPlugin}s; see {@link #getSaver(Object, String)}.
	 * 
	 * 
	 * @param data The data to be saved to the destination.
	 * @param destination The destination (e.g., file path) to which data should
	 *          be saved.
	 * @throws IOException if something goes wrong saving the data.
	 */
	void save(Object data, String destination) throws IOException;

	// -- HandlerService methods --

	@Override
	@SuppressWarnings({ "rawtypes", "unchecked" })
	default Class> getPluginType() {
		return (Class) IOPlugin.class;
	}

	@Override
	default Class getType() {
		return String.class;
	}
}