Use type converter that cannot return null for date to avoid crash

CHANGELOG.md

@@ -7,6 +7,8 @@
 *   Bug Fixes:
     *   Ensure we have the most up-to-date episode urls before attempting playback
         ([#1561](https://github.com/Automattic/pocket-casts-android/pull/1561))
+    *   Prevent crash if database is missing date episode is published
+        ([#1573](https://github.com/Automattic/pocket-casts-android/pull/1573))
 
 7.52
 -----

modules/services/model/src/main/java/au/com/shiftyjelly/pocketcasts/models/converter/DateTypeConverter.kt

@@ -1,6 +1,9 @@
 package au.com.shiftyjelly.pocketcasts.models.converter
 
 import androidx.room.TypeConverter
+import io.sentry.Sentry
+import timber.log.Timber
+import java.time.Instant
 import java.util.Date
 
 class DateTypeConverter {
@@ -15,3 +18,29 @@ class DateTypeConverter {
         return value?.time
     }
 }
+
+typealias SafeDate = Date
+
+// Type converter for dates that will not return null even if a null parameter is passed in.
+class SafeDateTypeConverter {
+
+    @TypeConverter
+    fun toDate(value: Long?): SafeDate {
+        return if (value == null) {
+            "ShouldNotBeNullDateTypeConverter::toDate called with null parameter. Returning epoch date.".let {
+                Timber.w(it)
+                Sentry.addBreadcrumb(it)
+            }
+            EPOCH
+        } else {
+            Date(value)
+        }
+    }
+
+    @TypeConverter
+    fun toLong(value: SafeDate?): Long = value?.time ?: 0L
+
+    companion object {
+        private val EPOCH = Date(Instant.EPOCH.toEpochMilli())
+    }
+}

modules/services/model/src/main/java/au/com/shiftyjelly/pocketcasts/models/db/AppDatabase.kt

@@ -18,6 +18,7 @@ import au.com.shiftyjelly.pocketcasts.models.converter.EpisodesSortTypeConverter
 import au.com.shiftyjelly.pocketcasts.models.converter.PodcastAutoUpNextConverter
 import au.com.shiftyjelly.pocketcasts.models.converter.PodcastLicensingEnumConverter
 import au.com.shiftyjelly.pocketcasts.models.converter.PodcastsSortTypeConverter
+import au.com.shiftyjelly.pocketcasts.models.converter.SafeDateTypeConverter
 import au.com.shiftyjelly.pocketcasts.models.converter.SyncStatusConverter
 import au.com.shiftyjelly.pocketcasts.models.converter.TrimModeTypeConverter
 import au.com.shiftyjelly.pocketcasts.models.converter.UserEpisodeServerStatusConverter
@@ -69,6 +70,7 @@ import au.com.shiftyjelly.pocketcasts.localization.R as LR
     AnonymousBumpStat.CustomEventPropsTypeConverter::class,
     BundlePaidTypeConverter::class,
     DateTypeConverter::class,
+    SafeDateTypeConverter::class,
     EpisodePlayingStatusConverter::class,
     EpisodeStatusEnumConverter::class,
     EpisodesSortTypeConverter::class,

modules/services/model/src/main/java/au/com/shiftyjelly/pocketcasts/models/entity/PodcastEpisode.kt

@@ -7,6 +7,7 @@ import androidx.room.Ignore
 import androidx.room.Index
 import androidx.room.PrimaryKey
 import au.com.shiftyjelly.pocketcasts.localization.R
+import au.com.shiftyjelly.pocketcasts.models.converter.SafeDate
 import au.com.shiftyjelly.pocketcasts.models.type.EpisodePlayingStatus
 import au.com.shiftyjelly.pocketcasts.models.type.EpisodeStatusEnum
 import java.io.Serializable
@@ -23,7 +24,7 @@ import java.util.Date
 data class PodcastEpisode(
     @PrimaryKey(autoGenerate = false) @ColumnInfo(name = "uuid") override var uuid: String,
     @ColumnInfo(name = "episode_description") override var episodeDescription: String = "",
-    @ColumnInfo(name = "published_date") override var publishedDate: Date,
+    @ColumnInfo(name = "published_date") override var publishedDate: SafeDate,
     @ColumnInfo(name = "title") override var title: String = "",
     @ColumnInfo(name = "size_in_bytes") override var sizeInBytes: Long = 0,
     @ColumnInfo(name = "episode_status") override var episodeStatus: EpisodeStatusEnum = EpisodeStatusEnum.NOT_DOWNLOADED,

modules/services/model/src/test/java/au/com/shiftyjelly/pocketcasts/models/SafeDateTypeConverterTest.kt

@@ -0,0 +1,39 @@
+package au.com.shiftyjelly.pocketcasts.models
+
+import au.com.shiftyjelly.pocketcasts.models.converter.SafeDateTypeConverter
+import junit.framework.TestCase.assertEquals
+import org.junit.Test
+import java.time.Instant
+import java.util.Date
+
+class SafeDateTypeConverterTest {
+
+    @Test
+    fun `creates date from non-null long`() {
+        val l = 125542352L
+        val expected = Date(l)
+        val actual = SafeDateTypeConverter().toDate(l)
+        assertEquals(expected, actual)
+    }
+
+    @Test
+    fun `creates date from null long`() {
+        val expected = Date(Instant.EPOCH.toEpochMilli())
+        val actual = SafeDateTypeConverter().toDate(null)
+        assertEquals(expected, actual)
+    }
+
+    @Test
+    fun `creates long from non-null date`() {
+        val expected = 125542352L
+        val d = Date(expected)
+        val actual = SafeDateTypeConverter().toLong(d)
+        assertEquals(expected, actual)
+    }
+
+    @Test
+    fun `creates long from null date`() {
+        val actual = SafeDateTypeConverter().toLong(null)
+        assertEquals(0L, actual)
+    }
+}