/*
 * Copyright 2003-2022 The Music Player Daemon Project
 * http://www.musicpd.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "fs/Path.hxx"
#include "fs/AllocatedPath.hxx"

#include <gtest/gtest.h>

TEST(Path, Basic)
{
	EXPECT_TRUE(Path{nullptr}.IsNull());
	EXPECT_FALSE(Path::FromFS(PATH_LITERAL("")).IsNull());
	EXPECT_EQ(Path::FromFS(PATH_LITERAL("")).length(), 0U);
	EXPECT_EQ(Path::FromFS(PATH_LITERAL("foo")).length(), 3U);
	EXPECT_EQ(Path::FromFS(PATH_LITERAL("foo")).ToUTF8(), "foo");
}

TEST(Path, GetBase)
{
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("")).GetBase().c_str(), "");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("foo")).GetBase().c_str(), "foo");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("./foo")).GetBase().c_str(), "foo");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("../foo")).GetBase().c_str(), "foo");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("foo/bar")).GetBase().c_str(), "bar");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("/foo/bar")).GetBase().c_str(), "bar");
}

TEST(Path, GetDirectoryName)
{
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("")).GetDirectoryName().c_str(), ".");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("foo")).GetDirectoryName().c_str(), ".");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("./foo")).GetDirectoryName().c_str(), ".");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("../foo")).GetDirectoryName().c_str(), "..");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("foo/bar")).GetDirectoryName().c_str(), "foo");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("/foo/bar")).GetDirectoryName().c_str(), "/foo");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("/foo/")).GetDirectoryName().c_str(), "/foo");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("/foo/bar/baz")).GetDirectoryName().c_str(), "/foo/bar");
}

TEST(Path, Relative)
{
	EXPECT_EQ(Path::FromFS(PATH_LITERAL("foo")).Relative(Path::FromFS(PATH_LITERAL(""))), nullptr);
	EXPECT_EQ(Path::FromFS(PATH_LITERAL("/bar")).Relative(Path::FromFS(PATH_LITERAL("/foo/bar"))), nullptr);
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("/foo")).Relative(Path::FromFS(PATH_LITERAL("/foo/bar"))), "bar");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("/foo/")).Relative(Path::FromFS(PATH_LITERAL("/foo/bar"))), "bar");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("/foo")).Relative(Path::FromFS(PATH_LITERAL("/foo///bar"))), "bar");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("/foo")).Relative(Path::FromFS(PATH_LITERAL("/foo///"))), "");
}

TEST(Path, Extension)
{
	EXPECT_EQ(Path::FromFS(PATH_LITERAL("foo")).GetExtension(), nullptr);
	EXPECT_EQ(Path::FromFS(PATH_LITERAL("/foo/bar")).GetExtension(), nullptr);
	EXPECT_EQ(Path::FromFS(PATH_LITERAL("/foo/./bar")).GetExtension(), nullptr);
	EXPECT_EQ(Path::FromFS(PATH_LITERAL("/foo/.bar")).GetExtension(), nullptr);
	EXPECT_EQ(Path::FromFS(PATH_LITERAL("/foo/.")).GetExtension(), nullptr);
	EXPECT_EQ(Path::FromFS(PATH_LITERAL("/foo/..")).GetExtension(), nullptr);
	EXPECT_EQ(Path::FromFS(PATH_LITERAL("/foo.abc/bar")).GetExtension(), nullptr);
	EXPECT_EQ(Path::FromFS(PATH_LITERAL("/foo.abc/")).GetExtension(), nullptr);
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("/foo.abc/bar.def")).GetExtension(), "def");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("/foo.abc/bar.")).GetExtension(), "");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("/foo.abc/bar.def.ghi")).GetExtension(), "ghi");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("/foo/.bar.abc")).GetExtension(), "abc");
	EXPECT_STREQ(Path::FromFS(PATH_LITERAL("/foo/.bar.abc.def")).GetExtension(), "def");
}