/*
 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <AK/LexicalPath.h>
#include <LibCore/ArgsParser.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

int main(int argc, char** argv)
{
    if (pledge("stdio cpath", nullptr) < 0) {
        perror("pledge");
        return 1;
    }

    bool symbolic = false;
    const char* target = nullptr;
    const char* path = nullptr;

    Core::ArgsParser args_parser;
    args_parser.add_option(symbolic, "Create a symlink", "symbolic", 's');
    args_parser.add_positional_argument(target, "Link target", "target");
    args_parser.add_positional_argument(path, "Link path", "path", Core::ArgsParser::Required::No);
    args_parser.parse(argc, argv);

    String path_buffer;
    if (!path) {
        path_buffer = LexicalPath(target).basename();
        path = path_buffer.characters();
    }

    if (symbolic) {
        int rc = symlink(target, path);
        if (rc < 0) {
            perror("symlink");
            return 1;
        }
        return 0;
    }

    int rc = link(target, path);
    if (rc < 0) {
        perror("link");
        return 1;
    }
    return 0;
}