001package biweekly.io.scribe.component;
002
003import java.util.ArrayList;
004import java.util.Collections;
005import java.util.Comparator;
006import java.util.Date;
007import java.util.EnumSet;
008import java.util.List;
009import java.util.Set;
010
011import biweekly.ICalVersion;
012import biweekly.component.VFreeBusy;
013import biweekly.property.FreeBusy;
014import biweekly.property.ICalProperty;
015import biweekly.util.Period;
016
017/*
018 Copyright (c) 2013-2015, Michael Angstadt
019 All rights reserved.
020
021 Redistribution and use in source and binary forms, with or without
022 modification, are permitted provided that the following conditions are met: 
023
024 1. Redistributions of source code must retain the above copyright notice, this
025 list of conditions and the following disclaimer. 
026 2. Redistributions in binary form must reproduce the above copyright notice,
027 this list of conditions and the following disclaimer in the documentation
028 and/or other materials provided with the distribution. 
029
030 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
031 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
032 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
033 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
034 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
035 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
036 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
037 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
038 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
039 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
040 */
041
042/**
043 * @author Michael Angstadt
044 */
045public class VFreeBusyScribe extends ICalComponentScribe<VFreeBusy> {
046        public VFreeBusyScribe() {
047                super(VFreeBusy.class, "VFREEBUSY");
048        }
049
050        @Override
051        public List<ICalProperty> getProperties(VFreeBusy component) {
052                List<ICalProperty> properties = super.getProperties(component);
053
054                List<FreeBusy> fb = new ArrayList<FreeBusy>(component.getFreeBusy());
055                if (fb.isEmpty()) {
056                        return properties;
057                }
058
059                //sort FREEBUSY properties by start date (p.100)
060                Collections.sort(fb, new Comparator<FreeBusy>() {
061                        public int compare(FreeBusy one, FreeBusy two) {
062                                Date oneStart = getEarliestStartDate(one);
063                                Date twoStart = getEarliestStartDate(two);
064                                if (oneStart == null && twoStart == null) {
065                                        return 0;
066                                }
067                                if (oneStart == null) {
068                                        return 1;
069                                }
070                                if (twoStart == null) {
071                                        return -1;
072                                }
073                                return oneStart.compareTo(twoStart);
074                        }
075
076                        private Date getEarliestStartDate(FreeBusy fb) {
077                                Date date = null;
078                                for (Period tp : fb.getValues()) {
079                                        if (tp.getStartDate() == null) {
080                                                continue;
081                                        }
082                                        if (date == null || date.compareTo(tp.getStartDate()) > 0) {
083                                                date = tp.getStartDate();
084                                        }
085                                }
086                                return date;
087                        }
088                });
089
090                //find index of first FREEBUSY instance
091                int index = 0;
092                for (ICalProperty prop : properties) {
093                        if (prop instanceof FreeBusy) {
094                                break;
095                        }
096                        index++;
097                }
098
099                //remove and re-add the FREEBUSY instances in sorted order
100                for (FreeBusy f : fb) {
101                        properties.remove(f);
102                        properties.add(index++, f);
103                }
104
105                return properties;
106        }
107
108        @Override
109        protected VFreeBusy _newInstance() {
110                return new VFreeBusy();
111        }
112
113        @Override
114        public Set<ICalVersion> getSupportedVersions() {
115                return EnumSet.of(ICalVersion.V2_0_DEPRECATED, ICalVersion.V2_0);
116        }
117}