package io.github.applecommander.applesingle.tools.asu;

import java.io.File;
import java.io.IOException;
import java.util.Optional;
import java.util.concurrent.Callable;

import io.github.applecommander.applesingle.AppleSingle;
import io.github.applecommander.applesingle.ProdosFileInfo;
import picocli.CommandLine.Command;
import picocli.CommandLine.Option;
import picocli.CommandLine.Parameters;

/**
 * Display basic information from an AppleSingle archive. 
 */
@Command(name = "info", description = { "Display information about an AppleSingle file",
			"Please include a file name or indicate stdin should be read, but not both." },
		parameterListHeading = "%nParameters:%n",
		descriptionHeading = "%n",
		optionListHeading = "%nOptions:%n")
public class InfoCommand implements Callable<Void> {
	@Option(names = { "-h", "--help" }, description = "Show help for subcommand", usageHelp = true)
	private boolean helpFlag;

	@Option(names = "--stdin", description = "Read AppleSingle from stdin.")
	private boolean stdinFlag;
	
	@Parameters(arity = "0..1", description = "File to process")
	private File file;
	
	@Override
	public Void call() throws IOException {
		AppleSingle applesingle = stdinFlag ? AppleSingle.read(System.in) : AppleSingle.read(file);
		System.out.printf("Real Name: %s\n", Optional.ofNullable(applesingle.getRealName()).orElse("-Unknown-"));
		System.out.printf("ProDOS info:\n");
		if (applesingle.getProdosFileInfo() == null) {
			System.out.println("  Not supplied.");
		} else {
			ProdosFileInfo prodosFileInfo = applesingle.getProdosFileInfo();
			System.out.printf("  Access: 0x%02X\n", prodosFileInfo.getAccess());
			System.out.printf("  File Type: 0x%02X\n", prodosFileInfo.getFileType());
			System.out.printf("  Auxtype: 0x%04X\n", prodosFileInfo.getAuxType());
		}
		System.out.printf("Data Fork: Present, %,d bytes\n", applesingle.getDataFork().length);
		System.out.printf("Resource Fork: %s\n", 
				Optional.ofNullable(applesingle.getResourceFork())
					.map(d -> String.format("Present, %,d bytes", d.length))
					.orElse("Not present"));
		return null;
	}
}