Guess next episode release date (#6925)

2 files changed, 121 insertions, 2 deletions

diff --git a/ui/statistics/src/main/java/de/danoeh/antennapod/ui/statistics/feed/FeedStatisticsFragment.java b/ui/statistics/src/main/java/de/danoeh/antennapod/ui/statistics/feed/FeedStatisticsFragment.java
index 1aeeb8fa9..a7916ac5a 100644
--- a/ui/statistics/src/main/java/de/danoeh/antennapod/ui/statistics/feed/FeedStatisticsFragment.java
+++ b/ui/statistics/src/main/java/de/danoeh/antennapod/ui/statistics/feed/FeedStatisticsFragment.java
@@ -2,6 +2,7 @@ package de.danoeh.antennapod.ui.statistics.feed;
 
 import android.os.Bundle;
 import android.text.format.Formatter;
+import android.util.Pair;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -11,13 +12,23 @@ import androidx.fragment.app.Fragment;
 import de.danoeh.antennapod.core.storage.DBReader;
 import de.danoeh.antennapod.core.storage.StatisticsItem;
 import de.danoeh.antennapod.core.util.Converter;
+import de.danoeh.antennapod.core.util.DateFormatter;
+import de.danoeh.antennapod.core.util.ReleaseScheduleGuesser;
+import de.danoeh.antennapod.model.feed.FeedItem;
+import de.danoeh.antennapod.model.feed.FeedItemFilter;
+import de.danoeh.antennapod.model.feed.SortOrder;
+import de.danoeh.antennapod.ui.statistics.R;
 import de.danoeh.antennapod.ui.statistics.databinding.FeedStatisticsBinding;
 import io.reactivex.Observable;
 import io.reactivex.android.schedulers.AndroidSchedulers;
 import io.reactivex.disposables.Disposable;
 import io.reactivex.schedulers.Schedulers;
 
+import java.util.ArrayList;
+import java.util.Calendar;
 import java.util.Collections;
+import java.util.Date;
+import java.util.List;
 import java.util.Locale;
 
 public class FeedStatisticsFragment extends Fragment {
@@ -66,7 +77,17 @@ public class FeedStatisticsFragment extends Fragment {
 
                     for (StatisticsItem statisticsItem : statisticsData.feedTime) {
                         if (statisticsItem.feed.getId() == feedId) {
-                            return statisticsItem;
+                            List<FeedItem> items = DBReader.getFeedItemList(statisticsItem.feed,
+                                    FeedItemFilter.unfiltered(), SortOrder.DATE_OLD_NEW);
+                            List<Date> dates = new ArrayList<>();
+                            for (FeedItem item : items) {
+                                dates.add(item.getPubDate());
+                            }
+                            ReleaseScheduleGuesser.Guess guess = null;
+                            if (dates.size() > 1) {
+                                guess = ReleaseScheduleGuesser.performGuess(dates);
+                            }
+                            return new Pair<>(statisticsItem, guess);
                         }
                     }
                     return null;
@@ -76,13 +97,80 @@ public class FeedStatisticsFragment extends Fragment {
                         .subscribe(this::showStats, Throwable::printStackTrace);
     }
 
-    private void showStats(StatisticsItem s) {
+    private String getReadableDay(int day) {
+        switch (day) {
+            case Calendar.MONDAY:
+                return getString(R.string.release_schedule_monday);
+            case Calendar.TUESDAY:
+                return getString(R.string.release_schedule_tuesday);
+            case Calendar.WEDNESDAY:
+                return getString(R.string.release_schedule_wednesday);
+            case Calendar.THURSDAY:
+                return getString(R.string.release_schedule_thursday);
+            case Calendar.FRIDAY:
+                return getString(R.string.release_schedule_friday);
+            case Calendar.SATURDAY:
+                return getString(R.string.release_schedule_saturday);
+            case Calendar.SUNDAY:
+                return getString(R.string.release_schedule_sunday);
+            default:
+                return "error";
+        }
+    }
+
+    private String getReadableSchedule(ReleaseScheduleGuesser.Guess guess) {
+        switch (guess.schedule) {
+            case DAILY:
+                return getString(R.string.release_schedule_daily);
+            case WEEKDAYS:
+                return getString(R.string.release_schedule_weekdays);
+            case WEEKLY:
+                return getString(R.string.release_schedule_weekly) + ", " + getReadableDay(guess.days.get(0));
+            case BIWEEKLY:
+                return getString(R.string.release_schedule_biweekly) + ", " + getReadableDay(guess.days.get(0));
+            case MONTHLY:
+                return getString(R.string.release_schedule_monthly);
+            case FOURWEEKLY:
+                return getString(R.string.release_schedule_monthly) + ", " + getReadableDay(guess.days.get(0));
+            case SPECIFIC_DAYS:
+                StringBuilder days = new StringBuilder();
+                for (int i = 0; i < guess.days.size(); i++) {
+                    if (i != 0) {
+                        days.append(", ");
+                    }
+                    days.append(getReadableDay(guess.days.get(i)));
+                }
+                return days.toString();
+            default:
+                return getString(R.string.statistics_expected_next_episode_unknown);
+        }
+    }
+
+    private void showStats(Pair<StatisticsItem, ReleaseScheduleGuesser.Guess> p) {
+        StatisticsItem s = p.first;
         viewBinding.startedTotalLabel.setText(String.format(Locale.getDefault(), "%d / %d",
                 s.episodesStarted, s.episodes));
         viewBinding.timePlayedLabel.setText(Converter.shortLocalizedDuration(getContext(), s.timePlayed));
         viewBinding.totalDurationLabel.setText(Converter.shortLocalizedDuration(getContext(), s.time));
         viewBinding.onDeviceLabel.setText(String.format(Locale.getDefault(), "%d", s.episodesDownloadCount));
         viewBinding.spaceUsedLabel.setText(Formatter.formatShortFileSize(getContext(), s.totalDownloadSize));
+
+        ReleaseScheduleGuesser.Guess guess = p.second;
+        if (!s.feed.getPreferences().getKeepUpdated()) {
+            viewBinding.expectedNextEpisodeLabel.setText(R.string.updates_disabled_label);
+        } else if (guess == null || guess.nextExpectedDate.getTime() <= new Date().getTime() - 7 * 24 * 3600000L) {
+            // More than 30 days delayed
+            viewBinding.expectedNextEpisodeLabel.setText(R.string.statistics_expected_next_episode_unknown);
+        } else {
+            String text = DateFormatter.formatAbbrev(getContext(), guess.nextExpectedDate);
+            if (guess.nextExpectedDate.getTime() <= new Date().getTime()) {
+                text = getString(R.string.statistics_expected_next_episode_any_day);
+            }
+            if (guess.schedule != ReleaseScheduleGuesser.Schedule.UNKNOWN) {
+                text += " (" + getReadableSchedule(guess) + ")";
+            }
+            viewBinding.expectedNextEpisodeLabel.setText(text);
+        }
     }
 
     @Override
diff --git a/ui/statistics/src/main/res/layout/feed_statistics.xml b/ui/statistics/src/main/res/layout/feed_statistics.xml
index 6b9a7fa4c..78630758f 100644
--- a/ui/statistics/src/main/res/layout/feed_statistics.xml
+++ b/ui/statistics/src/main/res/layout/feed_statistics.xml
@@ -11,12 +11,14 @@
         <TextView
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:layout_weight="1"
             android:text="@string/statistics_episodes_started_total" />
 
         <com.joanzapata.iconify.widget.IconTextView
             android:id="@+id/startedTotalLabel"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:layout_weight="1"
             android:layout_marginLeft="8dp"
             android:layout_marginStart="8dp"
             android:text="@string/wait_icon"
@@ -29,12 +31,14 @@
         <TextView
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:layout_weight="1"
             android:text="@string/statistics_time_played" />
 
         <com.joanzapata.iconify.widget.IconTextView
             android:id="@+id/timePlayedLabel"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:layout_weight="1"
             android:layout_marginLeft="8dp"
             android:layout_marginStart="8dp"
             android:text="@string/wait_icon"
@@ -48,12 +52,14 @@
         <TextView
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:layout_weight="1"
             android:text="@string/statistics_total_duration" />
 
         <com.joanzapata.iconify.widget.IconTextView
             android:id="@+id/totalDurationLabel"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:layout_weight="1"
             android:layout_marginLeft="8dp"
             android:layout_marginStart="8dp"
             android:text="@string/wait_icon"
@@ -66,12 +72,14 @@
         <TextView
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:layout_weight="1"
             android:text="@string/statistics_episodes_on_device" />
 
         <com.joanzapata.iconify.widget.IconTextView
             android:id="@+id/onDeviceLabel"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:layout_weight="1"
             android:layout_marginLeft="8dp"
             android:layout_marginStart="8dp"
             android:text="@string/wait_icon"
@@ -84,12 +92,14 @@
         <TextView
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:layout_weight="1"
             android:text="@string/statistics_space_used" />
 
         <com.joanzapata.iconify.widget.IconTextView
             android:id="@+id/spaceUsedLabel"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:layout_weight="1"
             android:layout_marginLeft="8dp"
             android:layout_marginStart="8dp"
             android:text="@string/wait_icon"
@@ -97,4 +107,25 @@
 
     </TableRow>
 
+    <TableRow>
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/statistics_expected_next_episode" />
+
+        <com.joanzapata.iconify.widget.IconTextView
+            android:id="@+id/expectedNextEpisodeLabel"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:layout_marginLeft="8dp"
+            android:layout_marginStart="8dp"
+            android:lines="2"
+            android:text="@string/wait_icon"
+            tools:text="Jan 1st (weekly)" />
+
+    </TableRow>
+
 </TableLayout>