/*

 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * 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.

 */

package propgen;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.PrintStream;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.util.EnumSet;

import java.util.Set;

import java.util.stream.Collectors;

public class PropGen {

    /**

     * @param args the command line arguments

     */

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

        new PropGen().run();

    }

    final PrintStream out;

    final Path outFile;

    final ByteArrayOutputStream baos;

    PropGen() {

        out = System.out;

        outFile = null;

        baos = null;

    }

    public PropGen(Path outDir) throws IOException {

        outFile = Paths.get(outDir.toString(), "Demo.java");

        baos = new ByteArrayOutputStream();

        out = new PrintStream(baos);

    }

    enum Kind {

        FIELD(1),

        GETTER(2),

        SETTER(4),

        PROPERTY(8);

        Kind(int bit) {

            this.bit = bit;

        }

        int bit;

    }

    public void run() throws IOException {

        out.println("import javafx.beans.property.Property;");

        out.println("public class Demo {");

        for (int i = 1; i < 16; i++) {

            Set<Kind> set = EnumSet.noneOf(Kind.class);

            for (Kind k : Kind.values()) {

                if ((i & k.bit) == k.bit) {

                    set.add(k);

                }

            }

            addItems(set);

        }

        out.println("}");

        if (baos != null && outFile != null) {

            Files.write(outFile, baos.toByteArray());

        }

    }

    void addItems(Set<Kind> kinds) {

        String name = kinds.stream()

                .map(k -> k.name())

                .map(s -> s.substring(0, 1))

                .collect(Collectors.joining(""))

                .toLowerCase();

        if (kinds.contains(Kind.FIELD)) {

            out.println("    /** Field for " + name + ". */");

            out.println("    public Property " + name + ";");

        }

        if (kinds.contains(Kind.GETTER)) {

            out.println("    /**");

            out.println("     * Getter for " + name + ".");

            out.println("     * @return a " + name);

            out.println("     */");

            out.println("    public Object " + mname("get", name) + "() { return null; }");

        }

        if (kinds.contains(Kind.SETTER)) {

            out.println("    /**");

            out.println("     * Setter for " + name + ".");

            out.println("     * @param o a " + name);

            out.println("     */");

            out.println("    public void " + mname("set", name) + "(Object o) {  }");

        }

        if (kinds.contains(Kind.PROPERTY)) {

            out.println("    /**");

            out.println("     * Property for " + name + ".");

            out.println("     * @return the property for " + name);

            out.println("     */");

            out.println("    public Property " + name + "Property() { return null; }");

        }

        out.println();

    }

    String mname(String prefix, String base) {

        return prefix + Character.toUpperCase(base.charAt(0)) + base.substring(1);

    }

}