/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import java.nio.file.*;

import java.net.*;

import java.util.*;

import java.io.IOException;

/**

 * Tests path operations for zip provider.

 */

public class PathOps {

    static final java.io.PrintStream out = System.out;

    static FileSystem fs;

    private String input;

    private Path path;

    private Exception exc;

    private PathOps(String s) {

        out.println();

        input = s;

        try {

            path = fs.getPath(s);

            out.format("%s -> %s", s, path);

        } catch (Exception x) {

            exc = x;

            out.format("%s -> %s", s, x);

        }

        out.println();

    }

    Path path() {

        return path;

    }

    void fail() {

        throw new RuntimeException("PathOps failed");

    }

    void checkPath() {

        if (path == null) {

            throw new InternalError("path is null");

        }

    }

    void check(Object result, String expected) {

        out.format("\tExpected: %s\n", expected);

        out.format("\tActual: %s\n",  result);

        if (result == null) {

            if (expected == null) return;

        } else {

            // compare string representations

            if (expected != null && result.toString().equals(expected.toString()))

                return;

        }

        fail();

    }

    void check(Object result, boolean expected) {

        check(result, Boolean.toString(expected));

    }

    PathOps root(String expected) {

        out.println("check root");

        checkPath();

        check(path.getRoot(), expected);

        return this;

    }

    PathOps parent(String expected) {

        out.println("check parent");

        checkPath();

        check(path.getParent(), expected);

        return this;

    }

    PathOps name(String expected) {

        out.println("check name");

        checkPath();

        check(path.getFileName(), expected);

        return this;

    }

    PathOps element(int index, String expected) {

        out.format("check element %d\n", index);

        checkPath();

        check(path.getName(index), expected);

        return this;

    }

    PathOps subpath(int startIndex, int endIndex, String expected) {

        out.format("test subpath(%d,%d)\n", startIndex, endIndex);

        checkPath();

        check(path.subpath(startIndex, endIndex), expected);

        return this;

    }

    PathOps starts(String prefix) {

        out.format("test startsWith with %s\n", prefix);

        checkPath();

        Path s = fs.getPath(prefix);

        check(path.startsWith(s), true);

        return this;

    }

    PathOps notStarts(String prefix) {

        out.format("test not startsWith with %s\n", prefix);

        checkPath();

        Path s = fs.getPath(prefix);

        check(path.startsWith(s), false);

        return this;

    }

    PathOps ends(String suffix) {

        out.format("test endsWith %s\n", suffix);

        checkPath();

        Path s = fs.getPath(suffix);

        check(path.endsWith(s), true);

        return this;

    }

    PathOps notEnds(String suffix) {

        out.format("test not endsWith %s\n", suffix);

        checkPath();

        Path s = fs.getPath(suffix);

        check(path.endsWith(s), false);

        return this;

    }

    PathOps absolute() {

        out.println("check path is absolute");

        checkPath();

        check(path.isAbsolute(), true);

        return this;

    }

    PathOps notAbsolute() {

        out.println("check path is not absolute");

        checkPath();

        check(path.isAbsolute(), false);

        return this;

    }

    PathOps resolve(String other, String expected) {

        out.format("test resolve %s\n", other);

        checkPath();

        check(path.resolve(other), expected);

        return this;

    }

    PathOps relativize(String other, String expected) {

        out.format("test relativize %s\n", other);

        checkPath();

        Path that = fs.getPath(other);

        check(path.relativize(that), expected);

        return this;

    }

    PathOps normalize(String expected) {

        out.println("check normalized path");

        checkPath();

        check(path.normalize(), expected);

        return this;

    }

    PathOps string(String expected) {

        out.println("check string representation");

        checkPath();

        check(path, expected);

        return this;

    }

    PathOps isSameFile(String target) {

        try {

            out.println("check two paths are same");

            checkPath();

            check(Files.isSameFile(path, test(target).path()), true);

        } catch (IOException ioe) {

            fail();

        }

        return this;

    }

    PathOps invalid() {

        if (!(exc instanceof InvalidPathException)) {

            out.println("InvalidPathException not thrown as expected");

            fail();

        }

        return this;

    }

    static PathOps test(String s) {

        return new PathOps(s);

    }

    // -- PathOpss --

    static void header(String s) {

        out.println();

        out.println();

        out.println("-- " + s + " --");

    }

    static void doPathOpTests() {

        header("Path operations");

        // all components

        test("/a/b/c")

            .root("/")

            .parent("/a/b")

            .name("c");

        // root component only

        test("/")

            .root("/")

            .parent(null)

            .name(null);

        // no root component

        test("a/b")

            .root(null)

            .parent("a")

            .name("b");

        // name component only

        test("foo")

            .root(null)

            .parent(null)

            .name("foo");

        // startsWith

        test("")

            .starts("")

            .notStarts("/");

        test("/")

            .starts("/")

            .notStarts("/foo");

        test("/foo")

            .starts("/")

            .starts("/foo")

            .notStarts("/f")

            .notStarts("");

        test("/foo/bar")

            .starts("/")

            .starts("/foo")

            .starts("/foo/")

            .starts("/foo/bar")

            .notStarts("/f")

            .notStarts("foo")

            .notStarts("foo/bar")

            .notStarts("");

        test("foo")

            .starts("foo")

            .notStarts("f");

        test("foo/bar")

            .starts("foo")

            .starts("foo/")

            .starts("foo/bar")

            .notStarts("f")

            .notStarts("/foo")

            .notStarts("/foo/bar");

        // endsWith

        test("")

            .ends("")

            .notEnds("/");

        test("/")

            .ends("/")

            .notEnds("foo")

            .notEnds("/foo");

        test("/foo")

            .ends("foo")

            .ends("/foo")

            .notEnds("/");

        test("/foo/bar")

            .ends("bar")

            .ends("foo/bar")

            .ends("foo/bar/")

            .ends("/foo/bar")

            .notEnds("/bar");

        test("/foo/bar/")

            .ends("bar")

            .ends("foo/bar")

            .ends("foo/bar/")

            .ends("/foo/bar")

            .notEnds("/bar");

        test("foo")

            .ends("foo");

        test("foo/bar")

            .ends("bar")

            .ends("bar/")

            .ends("foo/bar/")

            .ends("foo/bar");

        // elements

        test("a/b/c")

            .element(0,"a")

            .element(1,"b")

            .element(2,"c");

        // isAbsolute

        test("/")

            .absolute();

        test("/tmp")

            .absolute();

        test("tmp")

            .notAbsolute();

        test("")

            .notAbsolute();

        // resolve

        test("/tmp")

            .resolve("foo", "/tmp/foo")

            .resolve("/foo", "/foo");

        test("tmp")

            .resolve("foo", "tmp/foo")

            .resolve("/foo", "/foo");

        // relativize

        test("/a/b/c")

            .relativize("/a/b/c", "")

            .relativize("/a/b/c/d/e", "d/e")

            .relativize("/a/x", "../../x");

        // normalize

        test("/")

            .normalize("/");

        test("foo")

            .normalize("foo");

        test("/foo")

            .normalize("/foo");

        test(".")

            .normalize("");

        test("..")

            .normalize("..");

        test("/..")

            .normalize("/");

        test("/../..")

            .normalize("/");

        test("foo/.")

            .normalize("foo");

        test("./foo")

            .normalize("foo");

        test("foo/..")

            .normalize("");

        test("../foo")

            .normalize("../foo");

        test("../../foo")

            .normalize("../../foo");

        test("foo/bar/..")

            .normalize("foo");

        test("foo/bar/gus/../..")

            .normalize("foo");

        test("/foo/bar/gus/../..")

            .normalize("/foo");

        test("/./.")

            .normalize("/");

        test("/.")

            .normalize("/");

        test("/./abc")

            .normalize("/abc");

        // invalid

        test("foo\u0000bar")

            .invalid();

        test("\u0000foo")

            .invalid();

        test("bar\u0000")

            .invalid();

        test("//foo\u0000bar")

            .invalid();

        test("//\u0000foo")

            .invalid();

        test("//bar\u0000")

            .invalid();

        // normalization

        test("//foo//bar")

            .string("/foo/bar")

            .root("/")

            .parent("/foo")

            .name("bar");

        // isSameFile

        test("/fileDoesNotExist")

            .isSameFile("/fileDoesNotExist");

    }

    static void npes() {

        header("NullPointerException");

        Path path = fs.getPath("foo");

        try {

            path.resolve((String)null);

            throw new RuntimeException("NullPointerException not thrown");

        } catch (NullPointerException npe) {

        }

        try {

            path.relativize(null);

            throw new RuntimeException("NullPointerException not thrown");

        } catch (NullPointerException npe) {

        }

        try {

            path.compareTo(null);

            throw new RuntimeException("NullPointerException not thrown");

        } catch (NullPointerException npe) {

        }

        try {

            path.startsWith((Path)null);

            throw new RuntimeException("NullPointerException not thrown");

        } catch (NullPointerException npe) {

        }

        try {

            path.endsWith((Path)null);

            throw new RuntimeException("NullPointerException not thrown");

        } catch (NullPointerException npe) {

        }

    }

    public static void main(String[] args) throws Throwable {

        Path zipfile = Paths.get(args[0]);

        fs = FileSystems.newFileSystem(zipfile, null);

        npes();

        doPathOpTests();

        fs.close();

    }

}