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      1 /*
      2  * Copyright (C) 2017 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 
     17 package android.telephony;
     18 
     19 import android.annotation.BytesLong;
     20 import android.annotation.CurrentTimeMillisLong;
     21 import android.annotation.IntDef;
     22 import android.annotation.NonNull;
     23 import android.annotation.Nullable;
     24 import android.annotation.SystemApi;
     25 import android.os.Parcel;
     26 import android.os.Parcelable;
     27 import android.util.Range;
     28 import android.util.RecurrenceRule;
     29 
     30 import com.android.internal.util.Preconditions;
     31 
     32 import java.lang.annotation.Retention;
     33 import java.lang.annotation.RetentionPolicy;
     34 import java.time.Period;
     35 import java.time.ZonedDateTime;
     36 import java.util.Iterator;
     37 import java.util.Objects;
     38 
     39 /**
     40  * Description of a billing relationship plan between a carrier and a specific
     41  * subscriber. This information is used to present more useful UI to users, such
     42  * as explaining how much mobile data they have remaining, and what will happen
     43  * when they run out.
     44  *
     45  * @see SubscriptionManager#setSubscriptionPlans(int, java.util.List)
     46  * @see SubscriptionManager#getSubscriptionPlans(int)
     47  */
     48 @SystemApi
     49 public final class SubscriptionPlan implements Parcelable {
     50     /** {@hide} */
     51     @IntDef(prefix = "LIMIT_BEHAVIOR_", value = {
     52             LIMIT_BEHAVIOR_UNKNOWN,
     53             LIMIT_BEHAVIOR_DISABLED,
     54             LIMIT_BEHAVIOR_BILLED,
     55             LIMIT_BEHAVIOR_THROTTLED,
     56     })
     57     @Retention(RetentionPolicy.SOURCE)
     58     public @interface LimitBehavior {}
     59 
     60     /** When a resource limit is hit, the behavior is unknown. */
     61     public static final int LIMIT_BEHAVIOR_UNKNOWN = -1;
     62     /** When a resource limit is hit, access is disabled. */
     63     public static final int LIMIT_BEHAVIOR_DISABLED = 0;
     64     /** When a resource limit is hit, the user is billed automatically. */
     65     public static final int LIMIT_BEHAVIOR_BILLED = 1;
     66     /** When a resource limit is hit, access is throttled to a slower rate. */
     67     public static final int LIMIT_BEHAVIOR_THROTTLED = 2;
     68 
     69     /** Value indicating a number of bytes is unknown. */
     70     public static final long BYTES_UNKNOWN = -1;
     71     /** Value indicating a number of bytes is unlimited. */
     72     public static final long BYTES_UNLIMITED = Long.MAX_VALUE;
     73 
     74     /** Value indicating a timestamp is unknown. */
     75     public static final long TIME_UNKNOWN = -1;
     76 
     77     private final RecurrenceRule cycleRule;
     78     private CharSequence title;
     79     private CharSequence summary;
     80     private long dataLimitBytes = BYTES_UNKNOWN;
     81     private int dataLimitBehavior = LIMIT_BEHAVIOR_UNKNOWN;
     82     private long dataUsageBytes = BYTES_UNKNOWN;
     83     private long dataUsageTime = TIME_UNKNOWN;
     84 
     85     private SubscriptionPlan(RecurrenceRule cycleRule) {
     86         this.cycleRule = Preconditions.checkNotNull(cycleRule);
     87     }
     88 
     89     private SubscriptionPlan(Parcel source) {
     90         cycleRule = source.readParcelable(null);
     91         title = source.readCharSequence();
     92         summary = source.readCharSequence();
     93         dataLimitBytes = source.readLong();
     94         dataLimitBehavior = source.readInt();
     95         dataUsageBytes = source.readLong();
     96         dataUsageTime = source.readLong();
     97     }
     98 
     99     @Override
    100     public int describeContents() {
    101         return 0;
    102     }
    103 
    104     @Override
    105     public void writeToParcel(Parcel dest, int flags) {
    106         dest.writeParcelable(cycleRule, flags);
    107         dest.writeCharSequence(title);
    108         dest.writeCharSequence(summary);
    109         dest.writeLong(dataLimitBytes);
    110         dest.writeInt(dataLimitBehavior);
    111         dest.writeLong(dataUsageBytes);
    112         dest.writeLong(dataUsageTime);
    113     }
    114 
    115     @Override
    116     public String toString() {
    117         return new StringBuilder("SubscriptionPlan{")
    118                 .append("cycleRule=").append(cycleRule)
    119                 .append(" title=").append(title)
    120                 .append(" summary=").append(summary)
    121                 .append(" dataLimitBytes=").append(dataLimitBytes)
    122                 .append(" dataLimitBehavior=").append(dataLimitBehavior)
    123                 .append(" dataUsageBytes=").append(dataUsageBytes)
    124                 .append(" dataUsageTime=").append(dataUsageTime)
    125                 .append("}").toString();
    126     }
    127 
    128     @Override
    129     public int hashCode() {
    130         return Objects.hash(cycleRule, title, summary, dataLimitBytes, dataLimitBehavior,
    131                 dataUsageBytes, dataUsageTime);
    132     }
    133 
    134     @Override
    135     public boolean equals(Object obj) {
    136         if (obj instanceof SubscriptionPlan) {
    137             final SubscriptionPlan other = (SubscriptionPlan) obj;
    138             return Objects.equals(cycleRule, other.cycleRule)
    139                     && Objects.equals(title, other.title)
    140                     && Objects.equals(summary, other.summary)
    141                     && dataLimitBytes == other.dataLimitBytes
    142                     && dataLimitBehavior == other.dataLimitBehavior
    143                     && dataUsageBytes == other.dataUsageBytes
    144                     && dataUsageTime == other.dataUsageTime;
    145         }
    146         return false;
    147     }
    148 
    149     public static final Parcelable.Creator<SubscriptionPlan> CREATOR = new Parcelable.Creator<SubscriptionPlan>() {
    150         @Override
    151         public SubscriptionPlan createFromParcel(Parcel source) {
    152             return new SubscriptionPlan(source);
    153         }
    154 
    155         @Override
    156         public SubscriptionPlan[] newArray(int size) {
    157             return new SubscriptionPlan[size];
    158         }
    159     };
    160 
    161     /** {@hide} */
    162     public @NonNull RecurrenceRule getCycleRule() {
    163         return cycleRule;
    164     }
    165 
    166     /** Return the short title of this plan. */
    167     public @Nullable CharSequence getTitle() {
    168         return title;
    169     }
    170 
    171     /** Return the short summary of this plan. */
    172     public @Nullable CharSequence getSummary() {
    173         return summary;
    174     }
    175 
    176     /**
    177      * Return the usage threshold at which data access changes according to
    178      * {@link #getDataLimitBehavior()}.
    179      */
    180     public @BytesLong long getDataLimitBytes() {
    181         return dataLimitBytes;
    182     }
    183 
    184     /**
    185      * Return the behavior of data access when usage reaches
    186      * {@link #getDataLimitBytes()}.
    187      */
    188     public @LimitBehavior int getDataLimitBehavior() {
    189         return dataLimitBehavior;
    190     }
    191 
    192     /**
    193      * Return a snapshot of currently known mobile data usage at
    194      * {@link #getDataUsageTime()}.
    195      */
    196     public @BytesLong long getDataUsageBytes() {
    197         return dataUsageBytes;
    198     }
    199 
    200     /**
    201      * Return the time at which {@link #getDataUsageBytes()} was valid.
    202      */
    203     public @CurrentTimeMillisLong long getDataUsageTime() {
    204         return dataUsageTime;
    205     }
    206 
    207     /**
    208      * Return an iterator that will return all valid data usage cycles based on
    209      * any recurrence rules. The iterator starts from the currently active cycle
    210      * and walks backwards through time.
    211      */
    212     public Iterator<Range<ZonedDateTime>> cycleIterator() {
    213         return cycleRule.cycleIterator();
    214     }
    215 
    216     /**
    217      * Builder for a {@link SubscriptionPlan}.
    218      */
    219     public static class Builder {
    220         private final SubscriptionPlan plan;
    221 
    222         /** {@hide} */
    223         public Builder(ZonedDateTime start, ZonedDateTime end, Period period) {
    224             plan = new SubscriptionPlan(new RecurrenceRule(start, end, period));
    225         }
    226 
    227         /**
    228          * Start defining a {@link SubscriptionPlan} that covers a very specific
    229          * window of time, and never automatically recurs.
    230          *
    231          * @param start The exact time at which the plan starts.
    232          * @param end The exact time at which the plan ends.
    233          */
    234         public static Builder createNonrecurring(ZonedDateTime start, ZonedDateTime end) {
    235             if (!end.isAfter(start)) {
    236                 throw new IllegalArgumentException(
    237                         "End " + end + " isn't after start " + start);
    238             }
    239             return new Builder(start, end, null);
    240         }
    241 
    242         /**
    243          * Start defining a {@link SubscriptionPlan} that starts at a specific
    244          * time, and automatically recurs after each specific period of time,
    245          * repeating indefinitely.
    246          * <p>
    247          * When the given period is set to exactly one month, the plan will
    248          * always recur on the day of the month defined by
    249          * {@link ZonedDateTime#getDayOfMonth()}. When a particular month ends
    250          * before this day, the plan will recur on the last possible instant of
    251          * that month.
    252          *
    253          * @param start The exact time at which the plan starts.
    254          * @param period The period after which the plan automatically recurs.
    255          */
    256         public static Builder createRecurring(ZonedDateTime start, Period period) {
    257             if (period.isZero() || period.isNegative()) {
    258                 throw new IllegalArgumentException("Period " + period + " must be positive");
    259             }
    260             return new Builder(start, null, period);
    261         }
    262 
    263         /** {@hide} */
    264         @SystemApi
    265         @Deprecated
    266         public static Builder createRecurringMonthly(ZonedDateTime start) {
    267             return new Builder(start, null, Period.ofMonths(1));
    268         }
    269 
    270         /** {@hide} */
    271         @SystemApi
    272         @Deprecated
    273         public static Builder createRecurringWeekly(ZonedDateTime start) {
    274             return new Builder(start, null, Period.ofDays(7));
    275         }
    276 
    277         /** {@hide} */
    278         @SystemApi
    279         @Deprecated
    280         public static Builder createRecurringDaily(ZonedDateTime start) {
    281             return new Builder(start, null, Period.ofDays(1));
    282         }
    283 
    284         public SubscriptionPlan build() {
    285             return plan;
    286         }
    287 
    288         /** Set the short title of this plan. */
    289         public Builder setTitle(@Nullable CharSequence title) {
    290             plan.title = title;
    291             return this;
    292         }
    293 
    294         /** Set the short summary of this plan. */
    295         public Builder setSummary(@Nullable CharSequence summary) {
    296             plan.summary = summary;
    297             return this;
    298         }
    299 
    300         /**
    301          * Set the usage threshold at which data access changes.
    302          *
    303          * @param dataLimitBytes the usage threshold at which data access
    304          *            changes
    305          * @param dataLimitBehavior the behavior of data access when usage
    306          *            reaches the threshold
    307          */
    308         public Builder setDataLimit(@BytesLong long dataLimitBytes,
    309                 @LimitBehavior int dataLimitBehavior) {
    310             if (dataLimitBytes < 0) {
    311                 throw new IllegalArgumentException("Limit bytes must be positive");
    312             }
    313             if (dataLimitBehavior < 0) {
    314                 throw new IllegalArgumentException("Limit behavior must be defined");
    315             }
    316             plan.dataLimitBytes = dataLimitBytes;
    317             plan.dataLimitBehavior = dataLimitBehavior;
    318             return this;
    319         }
    320 
    321         /**
    322          * Set a snapshot of currently known mobile data usage.
    323          *
    324          * @param dataUsageBytes the currently known mobile data usage
    325          * @param dataUsageTime the time at which this snapshot was valid
    326          */
    327         public Builder setDataUsage(@BytesLong long dataUsageBytes,
    328                 @CurrentTimeMillisLong long dataUsageTime) {
    329             if (dataUsageBytes < 0) {
    330                 throw new IllegalArgumentException("Usage bytes must be positive");
    331             }
    332             if (dataUsageTime < 0) {
    333                 throw new IllegalArgumentException("Usage time must be positive");
    334             }
    335             plan.dataUsageBytes = dataUsageBytes;
    336             plan.dataUsageTime = dataUsageTime;
    337             return this;
    338         }
    339     }
    340 }
    341