/*--------------------------------------------------------------------------
 *  Copyright 2008 utgenome.org
 *
 *  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.
 *--------------------------------------------------------------------------*/
//--------------------------------------
// utgb-shell Project
//
// Import.java
// Since: Jan 20, 2009
//
// $URL$ 
// $Author$
//--------------------------------------
package org.utgenome.shell;

import java.io.File;
import java.io.FileReader;
import java.io.InputStreamReader;

import org.utgenome.format.fasta.FASTA2Db;
import org.utgenome.format.silk.read.ReadDBBuilder;
import org.utgenome.shell.db.bed.BEDDatabaseGenerator;
import org.xerial.util.log.Logger;
import org.xerial.util.opt.Argument;
import org.xerial.util.opt.Option;

/**
 * import command
 * 
 * @author leo
 * 
 */
// @Usage(command = "> utgb import", description = "import command")
public class Import extends UTGBShellCommand {

	private static Logger _logger = Logger.getLogger(Import.class);

	private enum FileType {
		AUTO, READ, BED, FASTA
	}

	@Option(symbol = "t", longName = "type", description = "specify the input file type: (AUTO, FASTA, READ, BED)")
	private FileType fileType = FileType.AUTO;

	@Argument(index = 0, required = false)
	private String inputFilePath = null;

	@Option(symbol = "o", longName = "output", varName = "DB FILE NAME", description = "output SQLite DB file name")
	private String outputFileName;

	@Option(symbol = "w", longName = "overwrite", description = "overwrite existing DB files")
	private boolean overwriteDB = false;

	@Override
	public void execute(String[] args) throws Exception {

		File input = null;

		if (inputFilePath == null)
			_logger.info("use STDIN for the input");
		else {
			_logger.info("input file: " + inputFilePath);
			input = new File(inputFilePath);
			if (!input.exists())
				throw new UTGBShellException("file not found: " + inputFilePath);
		}

		_logger.info("file type: " + fileType);

		if (outputFileName == null) {
			// new File("db").mkdirs();

			outputFileName = String.format("%s.sqlite", inputFilePath);
			int count = 1;
			if (!overwriteDB) {
				while (new File(outputFileName).exists()) {
					outputFileName = String.format("%s.sqlite.%d", inputFilePath, count++);
				}
			}
		}

		_logger.info("output file: " + outputFileName);

		switch (fileType) {
		case READ: {
			ReadDBBuilder builder = new ReadDBBuilder(outputFileName);
			if (input != null)
				builder.build(input.toURL());
			else
				builder.build(new InputStreamReader(System.in));
			break;
		}
		case BED: {
			if (input != null)
				BEDDatabaseGenerator.toSQLiteDB(new FileReader(input), outputFileName);
			else
				BEDDatabaseGenerator.toSQLiteDB(new InputStreamReader(System.in), outputFileName);
			break;
		}
		case FASTA:
			if (input != null)
				FASTA2Db.main(new String[] { inputFilePath, "-o", outputFileName });
			else
				FASTA2Db.main(new String[] { "-o", outputFileName });
			break;
		case AUTO:
		default: {
			_logger.warn("file type (-t) must be given");
			break;
		}
		}

	}

	@Override
	public String name() {
		return "import";
	}

	public String getOneLinerDescription() {
		return "import a file and create a new database";
	}

}