/*

 * 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 jnlp.converter.parser;

import java.util.List;

import java.util.ArrayList;

import java.util.StringTokenizer;

/*

 * Utility class that knows to handle version strings

 * A version string is of the form:

 *

 *  (version-id ('+'?) ' ') *

 *

 */

public class VersionString {

    private final ArrayList<VersionID> _versionIds;

    /** Constructs a VersionString object from string */

    public VersionString(String vs) {

        _versionIds = new ArrayList<>();

        if (vs != null) {

            StringTokenizer st = new StringTokenizer(vs, " ", false);

            while (st.hasMoreElements()) {

                // Note: The VersionID class takes care of a postfixed '+'

                _versionIds.add(new VersionID(st.nextToken()));

            }

        }

    }

    public VersionString(VersionID id) {

        _versionIds = new ArrayList<>();

        if (id != null) {

            _versionIds.add(id);

        }

    }

    public boolean isSimpleVersion() {

        if (_versionIds.size() == 1) {

            return _versionIds.get(0).isSimpleVersion();

        }

        return false;

    }

    /** Check if this VersionString object contains the VersionID m */

    public boolean contains(VersionID m) {

        for (int i = 0; i < _versionIds.size(); i++) {

            VersionID vi = _versionIds.get(i);

            boolean check = vi.match(m);

            if (check) {

                return true;

            }

        }

        return false;

    }

    /** Check if this VersionString object contains the VersionID m, given as a string */

    public boolean contains(String versionid) {

        return contains(new VersionID(versionid));

    }

    /** Check if this VersionString object contains anything greater than m */

    public boolean containsGreaterThan(VersionID m) {

        for (int i = 0; i < _versionIds.size(); i++) {

            VersionID vi = _versionIds.get(i);

            boolean check = vi.isGreaterThan(m);

            if (check) {

                return true;

            }

        }

        return false;

    }

    /** Check if this VersionString object contains anything greater than the VersionID m, given as a string */

    public boolean containsGreaterThan(String versionid) {

        return containsGreaterThan(new VersionID(versionid));

    }

    /** Check if the versionString 'vs' contains the VersionID 'vi' */

    public static boolean contains(String vs, String vi) {

        return (new VersionString(vs)).contains(vi);

    }

    /** Pretty-print object */

    @Override

    public String toString() {

        StringBuilder sb = new StringBuilder();

        for (int i = 0; i < _versionIds.size(); i++) {

            sb.append(_versionIds.get(i).toString());

            sb.append(' ');

        }

        return sb.toString();

    }

    public List<VersionID> getAllVersionIDs() {

        return _versionIds;

    }

}