ZenModeConfig.java revision cc30c8d729c9d846012ac6dd03c1e51262936e8f 
1/**
2 * Copyright (c) 2014, The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.service.notification;
18
19import android.content.ComponentName;
20import android.content.Context;
21import android.content.res.Resources;
22import android.net.Uri;
23import android.os.Parcel;
24import android.os.Parcelable;
25import android.text.TextUtils;
26import android.text.format.DateFormat;
27import android.util.Slog;
28
29import org.xmlpull.v1.XmlPullParser;
30import org.xmlpull.v1.XmlPullParserException;
31import org.xmlpull.v1.XmlSerializer;
32
33import java.io.IOException;
34import java.util.ArrayList;
35import java.util.Arrays;
36import java.util.Calendar;
37import java.util.Locale;
38import java.util.Objects;
39
40import com.android.internal.R;
41
42/**
43 * Persisted configuration for zen mode.
44 *
45 * @hide
46 */
47public class ZenModeConfig implements Parcelable {
48    private static String TAG = "ZenModeConfig";
49
50    public static final String SLEEP_MODE_NIGHTS = "nights";
51    public static final String SLEEP_MODE_WEEKNIGHTS = "weeknights";
52    public static final String SLEEP_MODE_DAYS_PREFIX = "days:";
53
54    public static final int SOURCE_ANYONE = 0;
55    public static final int SOURCE_CONTACT = 1;
56    public static final int SOURCE_STAR = 2;
57    public static final int MAX_SOURCE = SOURCE_STAR;
58
59    public static final int[] ALL_DAYS = { Calendar.SUNDAY, Calendar.MONDAY, Calendar.TUESDAY,
60            Calendar.WEDNESDAY, Calendar.THURSDAY, Calendar.FRIDAY, Calendar.SATURDAY };
61    public static final int[] WEEKNIGHT_DAYS = { Calendar.SUNDAY, Calendar.MONDAY, Calendar.TUESDAY,
62            Calendar.WEDNESDAY, Calendar.THURSDAY };
63
64    public static final int[] MINUTE_BUCKETS = new int[] { 15, 30, 45, 60, 120, 180, 240, 480 };
65    private static final int SECONDS_MS = 1000;
66    private static final int MINUTES_MS = 60 * SECONDS_MS;
67    private static final int ZERO_VALUE_MS = 20 * SECONDS_MS;
68
69    private static final boolean DEFAULT_ALLOW_EVENTS = true;
70
71    private static final int XML_VERSION = 1;
72    private static final String ZEN_TAG = "zen";
73    private static final String ZEN_ATT_VERSION = "version";
74    private static final String ALLOW_TAG = "allow";
75    private static final String ALLOW_ATT_CALLS = "calls";
76    private static final String ALLOW_ATT_MESSAGES = "messages";
77    private static final String ALLOW_ATT_FROM = "from";
78    private static final String ALLOW_ATT_EVENTS = "events";
79    private static final String SLEEP_TAG = "sleep";
80    private static final String SLEEP_ATT_MODE = "mode";
81    private static final String SLEEP_ATT_NONE = "none";
82
83    private static final String SLEEP_ATT_START_HR = "startHour";
84    private static final String SLEEP_ATT_START_MIN = "startMin";
85    private static final String SLEEP_ATT_END_HR = "endHour";
86    private static final String SLEEP_ATT_END_MIN = "endMin";
87
88    private static final String CONDITION_TAG = "condition";
89    private static final String CONDITION_ATT_COMPONENT = "component";
90    private static final String CONDITION_ATT_ID = "id";
91    private static final String CONDITION_ATT_SUMMARY = "summary";
92    private static final String CONDITION_ATT_LINE1 = "line1";
93    private static final String CONDITION_ATT_LINE2 = "line2";
94    private static final String CONDITION_ATT_ICON = "icon";
95    private static final String CONDITION_ATT_STATE = "state";
96    private static final String CONDITION_ATT_FLAGS = "flags";
97
98    private static final String EXIT_CONDITION_TAG = "exitCondition";
99    private static final String EXIT_CONDITION_ATT_COMPONENT = "component";
100
101    public boolean allowCalls;
102    public boolean allowMessages;
103    public boolean allowEvents = DEFAULT_ALLOW_EVENTS;
104    public int allowFrom = SOURCE_ANYONE;
105
106    public String sleepMode;
107    public int sleepStartHour;   // 0-23
108    public int sleepStartMinute; // 0-59
109    public int sleepEndHour;
110    public int sleepEndMinute;
111    public boolean sleepNone;    // false = priority, true = none
112    public ComponentName[] conditionComponents;
113    public Uri[] conditionIds;
114    public Condition exitCondition;
115    public ComponentName exitConditionComponent;
116
117    public ZenModeConfig() { }
118
119    public ZenModeConfig(Parcel source) {
120        allowCalls = source.readInt() == 1;
121        allowMessages = source.readInt() == 1;
122        allowEvents = source.readInt() == 1;
123        if (source.readInt() == 1) {
124            sleepMode = source.readString();
125        }
126        sleepStartHour = source.readInt();
127        sleepStartMinute = source.readInt();
128        sleepEndHour = source.readInt();
129        sleepEndMinute = source.readInt();
130        sleepNone = source.readInt() == 1;
131        int len = source.readInt();
132        if (len > 0) {
133            conditionComponents = new ComponentName[len];
134            source.readTypedArray(conditionComponents, ComponentName.CREATOR);
135        }
136        len = source.readInt();
137        if (len > 0) {
138            conditionIds = new Uri[len];
139            source.readTypedArray(conditionIds, Uri.CREATOR);
140        }
141        allowFrom = source.readInt();
142        exitCondition = source.readParcelable(null);
143        exitConditionComponent = source.readParcelable(null);
144    }
145
146    @Override
147    public void writeToParcel(Parcel dest, int flags) {
148        dest.writeInt(allowCalls ? 1 : 0);
149        dest.writeInt(allowMessages ? 1 : 0);
150        dest.writeInt(allowEvents ? 1 : 0);
151        if (sleepMode != null) {
152            dest.writeInt(1);
153            dest.writeString(sleepMode);
154        } else {
155            dest.writeInt(0);
156        }
157        dest.writeInt(sleepStartHour);
158        dest.writeInt(sleepStartMinute);
159        dest.writeInt(sleepEndHour);
160        dest.writeInt(sleepEndMinute);
161        dest.writeInt(sleepNone ? 1 : 0);
162        if (conditionComponents != null && conditionComponents.length > 0) {
163            dest.writeInt(conditionComponents.length);
164            dest.writeTypedArray(conditionComponents, 0);
165        } else {
166            dest.writeInt(0);
167        }
168        if (conditionIds != null && conditionIds.length > 0) {
169            dest.writeInt(conditionIds.length);
170            dest.writeTypedArray(conditionIds, 0);
171        } else {
172            dest.writeInt(0);
173        }
174        dest.writeInt(allowFrom);
175        dest.writeParcelable(exitCondition, 0);
176        dest.writeParcelable(exitConditionComponent, 0);
177    }
178
179    @Override
180    public String toString() {
181        return new StringBuilder(ZenModeConfig.class.getSimpleName()).append('[')
182            .append("allowCalls=").append(allowCalls)
183            .append(",allowMessages=").append(allowMessages)
184            .append(",allowFrom=").append(sourceToString(allowFrom))
185            .append(",allowEvents=").append(allowEvents)
186            .append(",sleepMode=").append(sleepMode)
187            .append(",sleepStart=").append(sleepStartHour).append('.').append(sleepStartMinute)
188            .append(",sleepEnd=").append(sleepEndHour).append('.').append(sleepEndMinute)
189            .append(",sleepNone=").append(sleepNone)
190            .append(",conditionComponents=")
191            .append(conditionComponents == null ? null : TextUtils.join(",", conditionComponents))
192            .append(",conditionIds=")
193            .append(conditionIds == null ? null : TextUtils.join(",", conditionIds))
194            .append(",exitCondition=").append(exitCondition)
195            .append(",exitConditionComponent=").append(exitConditionComponent)
196            .append(']').toString();
197    }
198
199    public static String sourceToString(int source) {
200        switch (source) {
201            case SOURCE_ANYONE:
202                return "anyone";
203            case SOURCE_CONTACT:
204                return "contacts";
205            case SOURCE_STAR:
206                return "stars";
207            default:
208                return "UNKNOWN";
209        }
210    }
211
212    @Override
213    public boolean equals(Object o) {
214        if (!(o instanceof ZenModeConfig)) return false;
215        if (o == this) return true;
216        final ZenModeConfig other = (ZenModeConfig) o;
217        return other.allowCalls == allowCalls
218                && other.allowMessages == allowMessages
219                && other.allowFrom == allowFrom
220                && other.allowEvents == allowEvents
221                && Objects.equals(other.sleepMode, sleepMode)
222                && other.sleepNone == sleepNone
223                && other.sleepStartHour == sleepStartHour
224                && other.sleepStartMinute == sleepStartMinute
225                && other.sleepEndHour == sleepEndHour
226                && other.sleepEndMinute == sleepEndMinute
227                && Objects.deepEquals(other.conditionComponents, conditionComponents)
228                && Objects.deepEquals(other.conditionIds, conditionIds)
229                && Objects.equals(other.exitCondition, exitCondition)
230                && Objects.equals(other.exitConditionComponent, exitConditionComponent);
231    }
232
233    @Override
234    public int hashCode() {
235        return Objects.hash(allowCalls, allowMessages, allowFrom, allowEvents, sleepMode, sleepNone,
236                sleepStartHour, sleepStartMinute, sleepEndHour, sleepEndMinute,
237                Arrays.hashCode(conditionComponents), Arrays.hashCode(conditionIds),
238                exitCondition, exitConditionComponent);
239    }
240
241    public boolean isValid() {
242        return isValidHour(sleepStartHour) && isValidMinute(sleepStartMinute)
243                && isValidHour(sleepEndHour) && isValidMinute(sleepEndMinute)
244                && isValidSleepMode(sleepMode);
245    }
246
247    public static boolean isValidSleepMode(String sleepMode) {
248        return sleepMode == null || sleepMode.equals(SLEEP_MODE_NIGHTS)
249                || sleepMode.equals(SLEEP_MODE_WEEKNIGHTS) || tryParseDays(sleepMode) != null;
250    }
251
252    public static int[] tryParseDays(String sleepMode) {
253        if (sleepMode == null) return null;
254        sleepMode = sleepMode.trim();
255        if (SLEEP_MODE_NIGHTS.equals(sleepMode)) return ALL_DAYS;
256        if (SLEEP_MODE_WEEKNIGHTS.equals(sleepMode)) return WEEKNIGHT_DAYS;
257        if (!sleepMode.startsWith(SLEEP_MODE_DAYS_PREFIX)) return null;
258        if (sleepMode.equals(SLEEP_MODE_DAYS_PREFIX)) return null;
259        final String[] tokens = sleepMode.substring(SLEEP_MODE_DAYS_PREFIX.length()).split(",");
260        if (tokens.length == 0) return null;
261        final int[] rt = new int[tokens.length];
262        for (int i = 0; i < tokens.length; i++) {
263            final int day = tryParseInt(tokens[i], -1);
264            if (day == -1) return null;
265            rt[i] = day;
266        }
267        return rt;
268    }
269
270    private static int tryParseInt(String value, int defValue) {
271        if (TextUtils.isEmpty(value)) return defValue;
272        try {
273            return Integer.valueOf(value);
274        } catch (NumberFormatException e) {
275            return defValue;
276        }
277    }
278
279    public static ZenModeConfig readXml(XmlPullParser parser)
280            throws XmlPullParserException, IOException {
281        int type = parser.getEventType();
282        if (type != XmlPullParser.START_TAG) return null;
283        String tag = parser.getName();
284        if (!ZEN_TAG.equals(tag)) return null;
285        final ZenModeConfig rt = new ZenModeConfig();
286        final int version = safeInt(parser, ZEN_ATT_VERSION, XML_VERSION);
287        final ArrayList<ComponentName> conditionComponents = new ArrayList<ComponentName>();
288        final ArrayList<Uri> conditionIds = new ArrayList<Uri>();
289        while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) {
290            tag = parser.getName();
291            if (type == XmlPullParser.END_TAG && ZEN_TAG.equals(tag)) {
292                if (!conditionComponents.isEmpty()) {
293                    rt.conditionComponents = conditionComponents
294                            .toArray(new ComponentName[conditionComponents.size()]);
295                    rt.conditionIds = conditionIds.toArray(new Uri[conditionIds.size()]);
296                }
297                return rt;
298            }
299            if (type == XmlPullParser.START_TAG) {
300                if (ALLOW_TAG.equals(tag)) {
301                    rt.allowCalls = safeBoolean(parser, ALLOW_ATT_CALLS, false);
302                    rt.allowMessages = safeBoolean(parser, ALLOW_ATT_MESSAGES, false);
303                    rt.allowEvents = safeBoolean(parser, ALLOW_ATT_EVENTS, DEFAULT_ALLOW_EVENTS);
304                    rt.allowFrom = safeInt(parser, ALLOW_ATT_FROM, SOURCE_ANYONE);
305                    if (rt.allowFrom < SOURCE_ANYONE || rt.allowFrom > MAX_SOURCE) {
306                        throw new IndexOutOfBoundsException("bad source in config:" + rt.allowFrom);
307                    }
308                } else if (SLEEP_TAG.equals(tag)) {
309                    final String mode = parser.getAttributeValue(null, SLEEP_ATT_MODE);
310                    rt.sleepMode = isValidSleepMode(mode)? mode : null;
311                    rt.sleepNone = safeBoolean(parser, SLEEP_ATT_NONE, false);
312                    final int startHour = safeInt(parser, SLEEP_ATT_START_HR, 0);
313                    final int startMinute = safeInt(parser, SLEEP_ATT_START_MIN, 0);
314                    final int endHour = safeInt(parser, SLEEP_ATT_END_HR, 0);
315                    final int endMinute = safeInt(parser, SLEEP_ATT_END_MIN, 0);
316                    rt.sleepStartHour = isValidHour(startHour) ? startHour : 0;
317                    rt.sleepStartMinute = isValidMinute(startMinute) ? startMinute : 0;
318                    rt.sleepEndHour = isValidHour(endHour) ? endHour : 0;
319                    rt.sleepEndMinute = isValidMinute(endMinute) ? endMinute : 0;
320                } else if (CONDITION_TAG.equals(tag)) {
321                    final ComponentName component =
322                            safeComponentName(parser, CONDITION_ATT_COMPONENT);
323                    final Uri conditionId = safeUri(parser, CONDITION_ATT_ID);
324                    if (component != null && conditionId != null) {
325                        conditionComponents.add(component);
326                        conditionIds.add(conditionId);
327                    }
328                } else if (EXIT_CONDITION_TAG.equals(tag)) {
329                    rt.exitCondition = readConditionXml(parser);
330                    if (rt.exitCondition != null) {
331                        rt.exitConditionComponent =
332                                safeComponentName(parser, EXIT_CONDITION_ATT_COMPONENT);
333                    }
334                }
335            }
336        }
337        throw new IllegalStateException("Failed to reach END_DOCUMENT");
338    }
339
340    public void writeXml(XmlSerializer out) throws IOException {
341        out.startTag(null, ZEN_TAG);
342        out.attribute(null, ZEN_ATT_VERSION, Integer.toString(XML_VERSION));
343
344        out.startTag(null, ALLOW_TAG);
345        out.attribute(null, ALLOW_ATT_CALLS, Boolean.toString(allowCalls));
346        out.attribute(null, ALLOW_ATT_MESSAGES, Boolean.toString(allowMessages));
347        out.attribute(null, ALLOW_ATT_EVENTS, Boolean.toString(allowEvents));
348        out.attribute(null, ALLOW_ATT_FROM, Integer.toString(allowFrom));
349        out.endTag(null, ALLOW_TAG);
350
351        out.startTag(null, SLEEP_TAG);
352        if (sleepMode != null) {
353            out.attribute(null, SLEEP_ATT_MODE, sleepMode);
354        }
355        out.attribute(null, SLEEP_ATT_NONE, Boolean.toString(sleepNone));
356        out.attribute(null, SLEEP_ATT_START_HR, Integer.toString(sleepStartHour));
357        out.attribute(null, SLEEP_ATT_START_MIN, Integer.toString(sleepStartMinute));
358        out.attribute(null, SLEEP_ATT_END_HR, Integer.toString(sleepEndHour));
359        out.attribute(null, SLEEP_ATT_END_MIN, Integer.toString(sleepEndMinute));
360        out.endTag(null, SLEEP_TAG);
361
362        if (conditionComponents != null && conditionIds != null
363                && conditionComponents.length == conditionIds.length) {
364            for (int i = 0; i < conditionComponents.length; i++) {
365                out.startTag(null, CONDITION_TAG);
366                out.attribute(null, CONDITION_ATT_COMPONENT,
367                        conditionComponents[i].flattenToString());
368                out.attribute(null, CONDITION_ATT_ID, conditionIds[i].toString());
369                out.endTag(null, CONDITION_TAG);
370            }
371        }
372        if (exitCondition != null && exitConditionComponent != null) {
373            out.startTag(null, EXIT_CONDITION_TAG);
374            out.attribute(null, EXIT_CONDITION_ATT_COMPONENT,
375                    exitConditionComponent.flattenToString());
376            writeConditionXml(exitCondition, out);
377            out.endTag(null, EXIT_CONDITION_TAG);
378        }
379        out.endTag(null, ZEN_TAG);
380    }
381
382    public static Condition readConditionXml(XmlPullParser parser) {
383        final Uri id = safeUri(parser, CONDITION_ATT_ID);
384        final String summary = parser.getAttributeValue(null, CONDITION_ATT_SUMMARY);
385        final String line1 = parser.getAttributeValue(null, CONDITION_ATT_LINE1);
386        final String line2 = parser.getAttributeValue(null, CONDITION_ATT_LINE2);
387        final int icon = safeInt(parser, CONDITION_ATT_ICON, -1);
388        final int state = safeInt(parser, CONDITION_ATT_STATE, -1);
389        final int flags = safeInt(parser, CONDITION_ATT_FLAGS, -1);
390        try {
391            return new Condition(id, summary, line1, line2, icon, state, flags);
392        } catch (IllegalArgumentException e) {
393            Slog.w(TAG, "Unable to read condition xml", e);
394            return null;
395        }
396    }
397
398    public static void writeConditionXml(Condition c, XmlSerializer out) throws IOException {
399        out.attribute(null, CONDITION_ATT_ID, c.id.toString());
400        out.attribute(null, CONDITION_ATT_SUMMARY, c.summary);
401        out.attribute(null, CONDITION_ATT_LINE1, c.line1);
402        out.attribute(null, CONDITION_ATT_LINE2, c.line2);
403        out.attribute(null, CONDITION_ATT_ICON, Integer.toString(c.icon));
404        out.attribute(null, CONDITION_ATT_STATE, Integer.toString(c.state));
405        out.attribute(null, CONDITION_ATT_FLAGS, Integer.toString(c.flags));
406    }
407
408    public static boolean isValidHour(int val) {
409        return val >= 0 && val < 24;
410    }
411
412    public static boolean isValidMinute(int val) {
413        return val >= 0 && val < 60;
414    }
415
416    private static boolean safeBoolean(XmlPullParser parser, String att, boolean defValue) {
417        final String val = parser.getAttributeValue(null, att);
418        if (TextUtils.isEmpty(val)) return defValue;
419        return Boolean.valueOf(val);
420    }
421
422    private static int safeInt(XmlPullParser parser, String att, int defValue) {
423        final String val = parser.getAttributeValue(null, att);
424        return tryParseInt(val, defValue);
425    }
426
427    private static ComponentName safeComponentName(XmlPullParser parser, String att) {
428        final String val = parser.getAttributeValue(null, att);
429        if (TextUtils.isEmpty(val)) return null;
430        return ComponentName.unflattenFromString(val);
431    }
432
433    private static Uri safeUri(XmlPullParser parser, String att) {
434        final String val = parser.getAttributeValue(null, att);
435        if (TextUtils.isEmpty(val)) return null;
436        return Uri.parse(val);
437    }
438
439    @Override
440    public int describeContents() {
441        return 0;
442    }
443
444    public ZenModeConfig copy() {
445        final Parcel parcel = Parcel.obtain();
446        try {
447            writeToParcel(parcel, 0);
448            parcel.setDataPosition(0);
449            return new ZenModeConfig(parcel);
450        } finally {
451            parcel.recycle();
452        }
453    }
454
455    public static final Parcelable.Creator<ZenModeConfig> CREATOR
456            = new Parcelable.Creator<ZenModeConfig>() {
457        @Override
458        public ZenModeConfig createFromParcel(Parcel source) {
459            return new ZenModeConfig(source);
460        }
461
462        @Override
463        public ZenModeConfig[] newArray(int size) {
464            return new ZenModeConfig[size];
465        }
466    };
467
468    public DowntimeInfo toDowntimeInfo() {
469        final DowntimeInfo downtime = new DowntimeInfo();
470        downtime.startHour = sleepStartHour;
471        downtime.startMinute = sleepStartMinute;
472        downtime.endHour = sleepEndHour;
473        downtime.endMinute = sleepEndMinute;
474        return downtime;
475    }
476
477    public static Condition toTimeCondition(Context context, int minutesFromNow) {
478        final long now = System.currentTimeMillis();
479        final long millis = minutesFromNow == 0 ? ZERO_VALUE_MS : minutesFromNow * MINUTES_MS;
480        return toTimeCondition(context, now + millis, minutesFromNow, now);
481    }
482
483    public static Condition toTimeCondition(Context context, long time, int minutes, long now) {
484        final int num, summaryResId, line1ResId;
485        if (minutes < 60) {
486            // display as minutes
487            num = minutes;
488            summaryResId = R.plurals.zen_mode_duration_minutes_summary;
489            line1ResId = R.plurals.zen_mode_duration_minutes;
490        } else {
491            // display as hours
492            num =  Math.round(minutes / 60f);
493            summaryResId = com.android.internal.R.plurals.zen_mode_duration_hours_summary;
494            line1ResId = com.android.internal.R.plurals.zen_mode_duration_hours;
495        }
496        final String skeleton = DateFormat.is24HourFormat(context) ? "Hm" : "hma";
497        final String pattern = DateFormat.getBestDateTimePattern(Locale.getDefault(), skeleton);
498        final CharSequence formattedTime = DateFormat.format(pattern, time);
499        final Resources res = context.getResources();
500        final String summary = res.getQuantityString(summaryResId, num, num, formattedTime);
501        final String line1 = res.getQuantityString(line1ResId, num, num, formattedTime);
502        final String line2 = res.getString(R.string.zen_mode_until, formattedTime);
503        final Uri id = toCountdownConditionId(time);
504        return new Condition(id, summary, line1, line2, 0, Condition.STATE_TRUE,
505                Condition.FLAG_RELEVANT_NOW);
506    }
507
508    // For built-in conditions
509    public static final String SYSTEM_AUTHORITY = "android";
510
511    // Built-in countdown conditions, e.g. condition://android/countdown/1399917958951
512    private static final String COUNTDOWN_PATH = "countdown";
513
514    public static Uri toCountdownConditionId(long time) {
515        return new Uri.Builder().scheme(Condition.SCHEME)
516                .authority(SYSTEM_AUTHORITY)
517                .appendPath(COUNTDOWN_PATH)
518                .appendPath(Long.toString(time))
519                .build();
520    }
521
522    public static long tryParseCountdownConditionId(Uri conditionId) {
523        if (!Condition.isValidId(conditionId, SYSTEM_AUTHORITY)) return 0;
524        if (conditionId.getPathSegments().size() != 2
525                || !COUNTDOWN_PATH.equals(conditionId.getPathSegments().get(0))) return 0;
526        try {
527            return Long.parseLong(conditionId.getPathSegments().get(1));
528        } catch (RuntimeException e) {
529            Slog.w(TAG, "Error parsing countdown condition: " + conditionId, e);
530            return 0;
531        }
532    }
533
534    public static boolean isValidCountdownConditionId(Uri conditionId) {
535        return tryParseCountdownConditionId(conditionId) != 0;
536    }
537
538    // Built-in downtime conditions, e.g. condition://android/downtime?start=10.00&end=7.00
539    private static final String DOWNTIME_PATH = "downtime";
540
541    public static Uri toDowntimeConditionId(DowntimeInfo downtime) {
542        return new Uri.Builder().scheme(Condition.SCHEME)
543                .authority(SYSTEM_AUTHORITY)
544                .appendPath(DOWNTIME_PATH)
545                .appendQueryParameter("start", downtime.startHour + "." + downtime.startMinute)
546                .appendQueryParameter("end", downtime.endHour + "." + downtime.endMinute)
547                .build();
548    }
549
550    public static DowntimeInfo tryParseDowntimeConditionId(Uri conditionId) {
551        if (!Condition.isValidId(conditionId, SYSTEM_AUTHORITY)
552                || conditionId.getPathSegments().size() != 1
553                || !DOWNTIME_PATH.equals(conditionId.getPathSegments().get(0))) {
554            return null;
555        }
556        final int[] start = tryParseHourAndMinute(conditionId.getQueryParameter("start"));
557        final int[] end = tryParseHourAndMinute(conditionId.getQueryParameter("end"));
558        if (start == null || end == null) return null;
559        final DowntimeInfo downtime = new DowntimeInfo();
560        downtime.startHour = start[0];
561        downtime.startMinute = start[1];
562        downtime.endHour = end[0];
563        downtime.endMinute = end[1];
564        return downtime;
565    }
566
567    private static int[] tryParseHourAndMinute(String value) {
568        if (TextUtils.isEmpty(value)) return null;
569        final int i = value.indexOf('.');
570        if (i < 1 || i >= value.length() - 1) return null;
571        final int hour = tryParseInt(value.substring(0, i), -1);
572        final int minute = tryParseInt(value.substring(i + 1), -1);
573        return isValidHour(hour) && isValidMinute(minute) ? new int[] { hour, minute } : null;
574    }
575
576    public static boolean isValidDowntimeConditionId(Uri conditionId) {
577        return tryParseDowntimeConditionId(conditionId) != null;
578    }
579
580    public static class DowntimeInfo {
581        public int startHour;   // 0-23
582        public int startMinute; // 0-59
583        public int endHour;
584        public int endMinute;
585
586        @Override
587        public int hashCode() {
588            return 0;
589        }
590
591        @Override
592        public boolean equals(Object o) {
593            if (!(o instanceof DowntimeInfo)) return false;
594            final DowntimeInfo other = (DowntimeInfo) o;
595            return startHour == other.startHour
596                    && startMinute == other.startMinute
597                    && endHour == other.endHour
598                    && endMinute == other.endMinute;
599        }
600    }
601}
602