/*
 * Copyright (C) 2009-2010, Google Inc. and others
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0 which is available at
 * https://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package org.eclipse.jgit.http.server;

import static javax.servlet.http.HttpServletResponse.SC_NOT_FOUND;
import static org.eclipse.jgit.http.server.ServletUtils.getRepository;
import static org.eclipse.jgit.http.server.ServletUtils.send;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.eclipse.jgit.util.HttpSupport;
import org.eclipse.jgit.util.IO;

/** Sends a small text meta file from the repository. */
class TextFileServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	private final String fileName;

	TextFileServlet(String name) {
		this.fileName = name;
	}

	/** {@inheritDoc} */
	@Override
	public void doGet(final HttpServletRequest req,
			final HttpServletResponse rsp) throws IOException {
		try {
			rsp.setContentType(HttpSupport.TEXT_PLAIN);
			send(read(req), req, rsp);
		} catch (FileNotFoundException noFile) {
			rsp.sendError(SC_NOT_FOUND);
		}
	}

	private byte[] read(HttpServletRequest req) throws IOException {
		final File gitdir = getRepository(req).getDirectory();
		if (gitdir == null)
			throw new FileNotFoundException(fileName);
		return IO.readFully(new File(gitdir, fileName));
	}
}