/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
package org.apache.ant.svn;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;

public class SvnEntry {
    private final Date date;
    private final String revision;
    private String author;
    private final String message;
    private final ArrayList paths = new ArrayList();

    /**
     * Creates a new instance of a SvnEntry
     * @param date the date
     * @param author the author
     * @param message a message to be added to the revision
     */
    public SvnEntry(final Date date, final String revision, 
                    final String author, final String message) {
        this(date, revision, author, message, Collections.EMPTY_LIST);
    }

    /**
     * Creates a new instance of a SvnEntry
     * @param date the date
     * @param author the author
     * @param message a message to be added to the revision
     */
    public SvnEntry(final Date date, final String revision, 
                    final String author, final String message,
                    final Collection paths) {
        this.date = date;
        this.revision = revision;
        this.author = author;
        this.message = message;
        this.paths.addAll(paths);
    }

    /**
     * Adds a path to the SvnEntry
     * @param path the path to add
     * @param revision the revision
     */
    public void addPath(final String name, final char action) {
        paths.add(new Path(name, action));
    }

    /**
     * Gets the date of the SvnEntry
     * @return the date
     */
    public Date getDate() {
        return date;
    }

    /**
     * Gets the revision of the SvnEntry
     * @return the date
     */
    public String getRevision() {
        return revision;
    }

    /**
     * Sets the author of the SvnEntry
     * @param author the author
     */
    public void setAuthor(final String author) {
        this.author = author;
    }

    /**
     * Gets the author of the SvnEntry
     * @return the author
     */
    public String getAuthor() {
        return author;
    }

    /**
     * Gets the message for the SvnEntry
     * @return the message
     */
    public String getMessage() {
        return message;
    }

    /**
     * Gets the paths in this SvnEntry
     * @return the files
     */
    public Path[] getPaths() {
        return (Path[]) paths.toArray(new Path[paths.size()]);
    }

    public static class Path {

        private static final char ADDED_MARKER = 'A';
        private static final char MODIFIED_MARKER = 'M';
        private static final char DELETED_MARKER = 'D';

        public static final int ADDED = 0;
        public static final int MODIFIED = 1;
        public static final int DELETED = 2;

        private static final String[] ACTIONS = {
            "added", "modified", "deleted",
        };

        private final String name;
        private final int action;

        public Path(final String name, final char actionChar) {
            this.name = name;
            switch (actionChar) {
            case ADDED_MARKER:
                action = ADDED;
                break;
            case MODIFIED_MARKER:
                action = MODIFIED;
                break;
            case DELETED_MARKER:
                action = DELETED;
                break;
            default:
                throw new IllegalArgumentException("Unkown action; " 
                                                   + actionChar);
            }
        }

        public Path(final String name, final int action) {
            this.name = name;
            if (action != ADDED && action != DELETED && action != MODIFIED) {
                throw new IllegalArgumentException("Unkown action; " + action);
            }
            this.action = action;
        }

        public String getName() {
            return name;
        }

        public int getAction() {
            return action;
        }

        public String getActionDescription() {
            return ACTIONS[action];
        }
    }

}