RealmWriteService + FlatTimeInterval for better performance

app/src/main/java/net/pokeranalytics/android/RealmWriteService.kt

@@ -43,9 +43,9 @@ class RealmWriteService : Service() {
 
         this.realm.executeTransactionAsync({ asyncRealm ->
             handler(asyncRealm)
-            Timber.d(">> handler done")
+//            Timber.d(">> handler done")
         }, {
-            Timber.d(">> YEAAAAAAAAAAAH !!!")
+//            Timber.d(">> YEAAAAAAAAAAAH !!!")
             this.realm.refresh()
         }, {
             Timber.d(">> NOOOOO error = $it")

app/src/main/java/net/pokeranalytics/android/calculus/ComputableGroup.kt

@@ -64,6 +64,11 @@ class ComputableGroup(val query: Query, var displayedStats: List<Stat>? = null)
 		return computables
 	}
 
+
+	fun timeIntervals(realm: Realm): RealmResults<FlatTimeInterval> {
+		return Filter.queryOn(realm, this.query)
+	}
+
 	/**
 	 * The list of sets to compute
 	 */

app/src/main/java/net/pokeranalytics/android/calculus/ReportWhistleBlower.kt

@@ -55,18 +55,18 @@ class ReportWhistleBlower(var context: Context) {
 
         val realm = Realm.getDefaultInstance()
 
-        this.sessions = realm.where(Session::class.java).findAll()
+        sessions = realm.where(Session::class.java).findAll()
-        this.sessions?.addChangeListener { _ ->
+        sessions?.addChangeListener { _ ->
             requestReportLaunch()
         }
 
-        this.results = realm.where(Result::class.java).findAll()
+        results = realm.where(Result::class.java).findAll()
-        this.results?.addChangeListener { _ ->
+        results?.addChangeListener { _ ->
             requestReportLaunch()
         }
 
-        this.sessionSets = realm.where(SessionSet::class.java).findAll()
+        sessionSets = realm.where(SessionSet::class.java).findAll()
-        this.sessionSets?.addChangeListener { _ ->
+        sessionSets?.addChangeListener { _ ->
             requestReportLaunch()
         }
 
@@ -156,13 +156,13 @@ class ReportTask(private var whistleBlower: ReportWhistleBlower, var context: Co
     }
 
     fun cancel() {
-        Timber.d("Reportwhistleblower task CANCEL")
+//        Timber.d("Reportwhistleblower task CANCEL")
         this.cancelled = true
     }
 
     private fun launchReports() {
 
-        Timber.d("====== Report whistleblower launch batch...")
+//        Timber.d("====== Report whistleblower launch batch...")
 
         CoroutineScope(Dispatchers.Default).launch {
 

app/src/main/java/net/pokeranalytics/android/model/extensions/SessionExtensions.kt

@@ -133,7 +133,7 @@ val AbstractList<Session>.hourlyDuration: Double
 		return intervals.sumOf { it.hourlyDuration }
 	}
 
-class TimeInterval(var start: Date, var end: Date, var breakDuration: Long) {
+class TimeInterval(var start: Date, var end: Date, var breakDuration: Long = 0L) {
 
 	val hourlyDuration: Double
 		get() {

app/src/main/java/net/pokeranalytics/android/model/filter/Filterable.kt

@@ -32,9 +32,9 @@ import net.pokeranalytics.android.util.CrashLogging
  *
  */
 
-class UnmanagedFilterField(message: String) : Exception(message) {
+//class UnmanagedFilterField(message: String) : Exception(message) {
-
+//
-}
+//}
 
 /**
  * Companion-level Interface to indicate an RealmObject class can be filtered and to provide all the fieldNames (eg: parameter's path) needed to be query on.
@@ -64,6 +64,7 @@ class FilterHelper {
 				SessionSet::class.java -> SessionSet.fieldNameForQueryType(queryCondition)
 				Transaction::class.java -> Transaction.fieldNameForQueryType(queryCondition)
 				Result::class.java -> Result.fieldNameForQueryType(queryCondition)
+				FlatTimeInterval::class.java -> FlatTimeInterval.fieldNameForQueryType(queryCondition)
 				else -> {
 					CrashLogging.logException(PAIllegalStateException("Filterable type fields are not defined for condition ${queryCondition::class}, class ${T::class}"))
                     null

app/src/main/java/net/pokeranalytics/android/model/migrations/PokerAnalyticsMigration.kt

@@ -3,6 +3,7 @@ package net.pokeranalytics.android.model.migrations
 import io.realm.DynamicRealm
 import io.realm.RealmMigration
 import net.pokeranalytics.android.exceptions.PAIllegalStateException
+import net.pokeranalytics.android.model.realm.FlatTimeInterval
 import timber.log.Timber
 import java.util.*
 
@@ -341,6 +342,18 @@ class PokerAnalyticsMigration : RealmMigration {
                 crs.addField("id", String::class.java).setRequired("id", true)
                 crs.addPrimaryKey("id")
             }
+            schema.create("FlatTimeInterval")?.let { fs ->
+                fs.addField("id", String::class.java).setRequired("id", true)
+                fs.addPrimaryKey("id")
+                fs.addField("startDate", Date::class.java).setRequired("startDate", true)
+                fs.addField("endDate", Date::class.java).setRequired("endDate", true)
+                fs.addField("duration", Long::class.java)
+
+                schema.get("Session")?.let { ss ->
+                    ss.addRealmSetField("flatTimeIntervals", fs)
+                }
+            }
+
             currentVersion++
         }
 

app/src/main/java/net/pokeranalytics/android/model/realm/FlatTimeInterval.kt

@@ -0,0 +1,61 @@
+package net.pokeranalytics.android.model.realm
+
+import io.realm.RealmObject
+import io.realm.RealmResults
+import io.realm.annotations.LinkingObjects
+import io.realm.annotations.PrimaryKey
+import io.realm.annotations.RealmClass
+import net.pokeranalytics.android.model.filter.Filterable
+import net.pokeranalytics.android.model.filter.QueryCondition
+import java.util.*
+
+
+@RealmClass
+open class FlatTimeInterval : RealmObject(), Filterable {
+
+    @PrimaryKey
+    var id = UUID.randomUUID().toString()
+
+    /**
+     * The start date of the session
+     */
+    var startDate: Date = Date()
+        set(value) {
+            field = value
+            this.computeDuration()
+        }
+
+    /**
+     * The start date of the session
+     */
+    var endDate: Date = Date()
+        set(value) {
+            field = value
+            this.computeDuration()
+        }
+
+    /**
+     * the net duration of the session, automatically calculated
+     */
+    var duration: Long = 0L
+
+    @LinkingObjects("flatTimeIntervals")
+    val sessions: RealmResults<Session>? = null
+
+    private fun computeDuration() {
+        duration = endDate.time - startDate.time
+    }
+
+    companion object {
+
+        fun fieldNameForQueryType(queryCondition: Class <out QueryCondition>): String? {
+            Session.fieldNameForQueryType(queryCondition)?.let {
+                return "sessions.$it"
+            }
+            return null
+        }
+
+    }
+
+}
+

app/src/main/java/net/pokeranalytics/android/model/realm/Session.kt

@@ -33,10 +33,7 @@ import net.pokeranalytics.android.ui.graph.Graph
 import net.pokeranalytics.android.ui.view.*
 import net.pokeranalytics.android.ui.view.rows.SessionPropertiesRow
 import net.pokeranalytics.android.util.*
-import net.pokeranalytics.android.util.extensions.hourMinute
+import net.pokeranalytics.android.util.extensions.*
-import net.pokeranalytics.android.util.extensions.shortDateTime
-import net.pokeranalytics.android.util.extensions.toCurrency
-import net.pokeranalytics.android.util.extensions.toMinutes
 import java.text.DateFormat
 import java.text.NumberFormat
 import java.text.ParseException
@@ -202,6 +199,7 @@ open class Session : RealmObject(), Savable, RowUpdatable, RowRepresentable, Tim
 	 */
 	var startDate: Date? = null
 		set(value) {
+			val previous = this.startDate
 			field = value
 			if (value == null) {
 				startDateHourMinuteComponent = null
@@ -217,7 +215,9 @@ open class Session : RealmObject(), Savable, RowUpdatable, RowRepresentable, Tim
 			if (value != null && this.endDate != null && value.after(this.endDate)) {
 				this.endDate = null
 			}
-			this.dateChanged()
+
+			SessionSetManager.startChanged(this, min(previous, value))
+
 //			this.computeStats()
 		}
 
@@ -227,6 +227,7 @@ open class Session : RealmObject(), Savable, RowUpdatable, RowRepresentable, Tim
 	@Index
 	var endDate: Date? = null
 		set(value) {
+			val previous = this.endDate
 			field = value
 			if (value == null) {
 				endDateHourMinuteComponent = null
@@ -237,7 +238,7 @@ open class Session : RealmObject(), Savable, RowUpdatable, RowRepresentable, Tim
 			}
 
 			this.computeNetDuration()
-			this.dateChanged()
+			SessionSetManager.endChanged(this, max(previous, value))
 			this.defineDefaultTournamentBuyinIfNecessary()
 //			this.computeStats()
 		}
@@ -373,6 +374,9 @@ open class Session : RealmObject(), Savable, RowUpdatable, RowRepresentable, Tim
 	// The custom fields values
 	var customFieldEntries: RealmList<CustomFieldEntry> = RealmList()
 
+	// The list of opponents who participated to the session
+	var flatTimeIntervals: RealmList<FlatTimeInterval> = RealmList()
+
 	// The number of hands played during the sessions
 	var handsCount: Int? = null
 
@@ -380,10 +384,6 @@ open class Session : RealmObject(), Savable, RowUpdatable, RowRepresentable, Tim
 		this.generateStakes()
 	}
 
-	private fun dateChanged() {
-		SessionSetManager.sessionDateChanged(this)
-	}
-
 //	/**
 //	 * Manages impacts on SessionSets
 //	 * Should be called when the start / end date are changed
@@ -697,10 +697,8 @@ open class Session : RealmObject(), Savable, RowUpdatable, RowRepresentable, Tim
 
 		CrashLogging.log("Deletes session. Id = ${this.id}")
 		if (isValid) {
-//			realm.executeTransaction {
+			cleanup()
-				cleanup()
+			deleteFromRealm()
-				deleteFromRealm()
-//			}
 		} else {
 			CrashLogging.log("Attempt to delete an invalid session")
 		}
@@ -715,6 +713,9 @@ open class Session : RealmObject(), Savable, RowUpdatable, RowRepresentable, Tim
 		this.sessionSet?.let {
 			SessionSetManager.removeFromTimeline(this)
 		}
+
+		SessionSetManager.sessionDateChanged(this)
+
 		// cleanup unnecessary related objects
 		this.result?.deleteFromRealm()
 		this.computableResult?.deleteFromRealm()

app/src/main/java/net/pokeranalytics/android/model/utils/SessionSetManager.kt

@@ -1,13 +1,18 @@
 package net.pokeranalytics.android.model.utils
 
 import io.realm.Realm
+import io.realm.RealmModel
 import io.realm.RealmQuery
 import io.realm.RealmResults
 import net.pokeranalytics.android.exceptions.ModelException
+import net.pokeranalytics.android.model.realm.FlatTimeInterval
 import net.pokeranalytics.android.model.realm.Session
 import net.pokeranalytics.android.model.realm.SessionSet
 import net.pokeranalytics.android.util.extensions.findById
+import net.pokeranalytics.android.util.extensions.max
+import net.pokeranalytics.android.util.extensions.min
 import timber.log.Timber
+import java.util.*
 
 class CorruptSessionSetException(message: String) : Exception(message)
 
@@ -17,12 +22,25 @@ class CorruptSessionSetException(message: String) : Exception(message)
  */
 object SessionSetManager {
 
-    var sessions: RealmResults<Session>
+    var sessions: RealmResults<Session>? = null
 
     private val sessionIdsToProcess = mutableSetOf<String>()
 
+    private var start: Date? = null
+    private var end: Date? = null
+
     fun configure() {} // launch init
 
+    fun startChanged(session: Session, date: Date?) {
+        this.start = min(this.start, date)
+        this.sessionIdsToProcess.add(session.id)
+    }
+
+    fun endChanged(session: Session, date: Date?) {
+        this.end = max(this.end, date)
+        this.sessionIdsToProcess.add(session.id)
+    }
+
     fun sessionDateChanged(session: Session) {
         this.sessionIdsToProcess.add(session.id)
     }
@@ -31,11 +49,12 @@ object SessionSetManager {
 
         val realm = Realm.getDefaultInstance()
 
-        this.sessions = realm.where(Session::class.java).findAllAsync()
+        sessions = realm.where(Session::class.java).findAllAsync()
-        this.sessions.addChangeListener { _, _ ->
+        sessions?.addChangeListener { _, _ ->
-            if (this.sessionIdsToProcess.isNotEmpty()) {
+            if (this.start != null && this.end != null) {
                 realm.executeTransactionAsync { asyncRealm ->
                     processSessions(asyncRealm)
+                    cleanUp()
                 }
             }
         }
@@ -43,21 +62,38 @@ object SessionSetManager {
         realm.close()
     }
 
+    private fun cleanUp() {
+        this.start = null
+        this.end = null
+//        this.sessionIdsToProcess.clear()
+    }
+
     private fun processSessions(realm: Realm) {
 
-        Timber.d("***** processSessions, process count = ${sessionIdsToProcess.size}")
+//        Timber.d("***** processSessions, process count = ${sessionIdsToProcess.size}")
 
-        for (sessionId in this.sessionIdsToProcess) {
+        val start = this.start
-            realm.findById<Session>(sessionId)?.let { session ->
+        val end = this.end
-                if (session.startDate != null && session.endDate != null) {
+
-                    updateTimeline(session)
+        val sessions = sessionIdsToProcess.mapNotNull { realm.findById<Session>(it) }
-                } else if (session.sessionSet != null) {
+        for (session in sessions) {
-                    removeFromTimeline(session)
+
-                }
+            // Session Sets
+            val startDate = session.startDate
+            val endDate = session.endDate
+            if (startDate != null && endDate != null) {
+                updateTimeline(session)
+            } else if (session.sessionSet != null) {
+                removeFromTimeline(session)
             }
+
+        }
+
+        // FlatTimeIntervals
+        if (start != null && end != null) {
+            processFlatTimeInterval(realm, start, end)
         }
 
-        this.sessionIdsToProcess.clear()
     }
 
     /**
@@ -76,25 +112,37 @@ object SessionSetManager {
             throw ModelException("End date should never be null here")
         }
 
-        val sessionSets = this.matchingSets(session)
+        val start = session.startDate!!
-        cleanupSessionSets(session, sessionSets)
+        val end = session.endDate!!
 
-//        val sessionId = session.id
+        val sessionSets = this.matchingData<SessionSet>(session.realm, start, end)
-//        realm.executeTransactionAsync { asyncRealm ->
+        cleanupSessionSets(session, sessionSets)
-//            asyncRealm.findById<Session>(sessionId)?.let { s ->
-//                val sessionSets = this.matchingSets(session)
-//                cleanupSessionSets(session, sessionSets)
-//            }
-//        }
 
     }
 
-    private fun matchingSets(session: Session): RealmResults<SessionSet> {
+//    private fun matchingSets(session: Session): RealmResults<SessionSet> {
-        val realm = session.realm
+//        val realm = session.realm
-        val endDate = session.endDate!! // tested above
+//        val endDate = session.endDate!! // tested above
-        val startDate = session.startDate!!
+//        val startDate = session.startDate!!
-
+//
-        val query: RealmQuery<SessionSet> = realm.where(SessionSet::class.java)
+//        val query: RealmQuery<SessionSet> = realm.where(SessionSet::class.java)
+//
+//        query
+//            .lessThanOrEqualTo("startDate", startDate)
+//            .greaterThanOrEqualTo("endDate", startDate)
+//            .or()
+//            .lessThanOrEqualTo("startDate", endDate)
+//            .greaterThanOrEqualTo("endDate", endDate)
+//            .or()
+//            .greaterThanOrEqualTo("startDate", startDate)
+//            .lessThanOrEqualTo("endDate", endDate)
+//
+//        return query.findAll()
+//    }
+
+    private inline fun <reified T : RealmModel> matchingData(realm: Realm, startDate: Date, endDate: Date): RealmResults<T> {
+
+        val query: RealmQuery<T> = realm.where(T::class.java)
 
         query
             .lessThanOrEqualTo("startDate", startDate)
@@ -127,7 +175,7 @@ object SessionSetManager {
         sessionSets.deleteAllFromRealm()
 
         allImpactedSessions.forEach { impactedSession ->
-            val sets = matchingSets(impactedSession)
+            val sets = matchingData<SessionSet>(impactedSession.realm, impactedSession.startDate!!, impactedSession.endDate!!)
             this.updateTimeFrames(sets, impactedSession)
         }
 
@@ -249,4 +297,155 @@ object SessionSetManager {
         }
     }
 
+    private fun processFlatTimeInterval(realm: Realm, start: Date, end: Date) {
+
+        val sessions = matchingData<Session>(realm, start, end)
+        val intervalsStore = IntervalsStore(sessions.toSet())
+
+        intervalsStore.intervals.forEach { it.deleteFromRealm() }
+
+        val intervals = SessionInterval.intervalMap(intervalsStore.sessions)
+
+        for (interval in intervals) {
+
+            val sortedDates = interval.dates.sorted()
+            for (i in (0 until sortedDates.size - 1)) {
+
+                val s = sortedDates[i]
+                val e = sortedDates[i + 1]
+
+                val matchingSessions = interval.sessions.filter {
+                    val sd = it.startDate
+                    val ed = it.endDate
+                    (sd != null && ed != null && sd <= s && ed >= e)
+                }
+                if (matchingSessions.isNotEmpty()) {
+                    Timber.d("**** Create FTI: $s - $e")
+                    val fti = FlatTimeInterval()
+                    fti.startDate = s
+                    fti.endDate = e
+                    matchingSessions.forEach { it.flatTimeIntervals.add(fti) }
+                    realm.insertOrUpdate(fti)
+                } else {
+                    Timber.w("The FTI has no sessions")
+                }
+            }
+        }
+    }
+
+}
+
+class IntervalsStore(sessions: Set<Session>) {
+
+    var start: Date = Date()
+    var end: Date = Date(0L)
+
+    val intervals = mutableSetOf<FlatTimeInterval>()
+
+    val sessions = mutableSetOf<Session>()
+
+    private val sessionIds: MutableSet<String> = mutableSetOf()
+
+    init {
+        processSessions(sessions)
+    }
+
+    private fun processSessions(sessions: Set<Session>) {
+        this.sessions.addAll(sessions)
+        for (session in sessions) {
+            loadIntervals(session)
+        }
+    }
+
+    private fun loadIntervals(session: Session) {
+
+        if (sessionIds.contains(session.id)) {
+            return
+        }
+
+        session.startDate?.let { this.start = min(this.start, it) }
+        session.endDate?.let { this.end = max(this.end, it) }
+
+        this.sessionIds.add(session.id)
+
+        for (fti in session.flatTimeIntervals) {
+            this.intervals.add(fti)
+
+            fti.sessions?.let { sessions ->
+                for (s in sessions) {
+                    loadIntervals(s)
+                }
+            }
+        }
+    }
+
+}
+
+class SessionInterval(session: Session) {
+
+    var start: Date
+    var end: Date?
+
+    var sessions: MutableSet<Session> = mutableSetOf()
+    val dates: MutableSet<Date> = mutableSetOf()
+
+    val duration: Long
+        get() {
+            val endDate = end ?: Date()
+            return endDate.time - start.time
+        }
+
+    init {
+        this.start = session.startDate!!
+        this.end = session.endDate
+
+        this.addSession(session)
+    }
+
+    private fun addSession(session: Session) {
+        this.sessions.add(session)
+
+        session.startDate?.let { this.dates.add(it) }
+        session.endDate?.let { endDate ->
+            this.dates.add(endDate)
+            if (endDate > end) {
+                end = endDate
+            }
+        }
+    }
+
+    companion object {
+
+        fun intervalMap(sessions: Set<Session>): List<SessionInterval> {
+
+            val sorted = sessions.sortedBy { it.startDate }
+            val intervals = mutableListOf<SessionInterval>()
+
+            sorted.firstOrNull()?.let { firstSession ->
+
+                var currentInterval = SessionInterval(firstSession)
+                intervals.add(currentInterval)
+
+                for (session in sessions.drop(1)) {
+                    val start = session.startDate!!
+                    val currentEnd = currentInterval.end
+                    if (currentEnd != null && start > currentEnd) {
+                        val interval = SessionInterval(session)
+                        currentInterval = interval
+                        intervals.add(interval)
+                    } else {
+                        currentInterval.addSession(session)
+                    }
+                }
+            }
+
+            intervals.forEach {
+                Timber.d("s = ${it.start}, e = ${it.end}")
+            }
+
+            return intervals
+        }
+
+    }
+
 }

app/src/main/java/net/pokeranalytics/android/ui/fragment/StatisticsFragment.kt

@@ -167,7 +167,7 @@ class StatisticsFragment : FilterableFragment(), RealmAsyncListener {
 
 			val async = async {
 				val s = Date()
-				Timber.d(">>> start...")
+//				Timber.d(">>> start...")
 
 				val realm = Realm.getDefaultInstance()
 				realm.refresh()
@@ -199,7 +199,6 @@ class StatisticsFragment : FilterableFragment(), RealmAsyncListener {
 
 		Timber.d(">>> Launch statistics computations")
 
-
 		val filter: Filter? = this.currentFilter(this.requireContext(), realm)?.let {
 			if (it.filterableType == currentFilterable) { it } else { null }
 		}

app/src/main/java/net/pokeranalytics/android/ui/fragment/report/ComposableTableReportFragment.kt

@@ -27,6 +27,7 @@ import net.pokeranalytics.android.ui.view.rows.CustomizableRowRepresentable
 import net.pokeranalytics.android.ui.view.rows.StatRow
 import net.pokeranalytics.android.util.NULL_TEXT
 import net.pokeranalytics.android.util.TextFormat
+import timber.log.Timber
 
 open class ComposableTableReportFragment : RealmFragment(), StaticRowRepresentableDataSource,
 	RowRepresentableDelegate {

app/src/main/java/net/pokeranalytics/android/ui/modules/calendar/CalendarFragment.kt

@@ -388,7 +388,7 @@ class CalendarFragment : RealmFragment(), StaticRowRepresentableDataSource,
 
 			val async = async {
 				val s = Date()
-				Timber.d(">>> start...")
+//				Timber.d(">>> start...")
 
 				val realm = Realm.getDefaultInstance()
 				realm.refresh()
@@ -436,6 +436,8 @@ class CalendarFragment : RealmFragment(), StaticRowRepresentableDataSource,
 
 	private fun launchStatComputation(realm: Realm) {
 
+		return
+
 		Timber.d(">>> Launch calendar computations")
 
 		val calendar = Calendar.getInstance()
@@ -660,8 +662,8 @@ class CalendarFragment : RealmFragment(), StaticRowRepresentableDataSource,
 			}
 		}
 
-		Timber.d("Display data: ${System.currentTimeMillis() - startDate.time}ms")
+//		Timber.d("Display data: ${System.currentTimeMillis() - startDate.time}ms")
-		Timber.d("Rows: ${rows.size}")
+//		Timber.d("Rows: ${rows.size}")
 
 		this.calendarAdapter.notifyDataSetChanged()
 

app/src/main/java/net/pokeranalytics/android/ui/modules/feed/FeedFragment.kt

@@ -19,9 +19,7 @@ import net.pokeranalytics.android.api.BlogPostApi
 import net.pokeranalytics.android.databinding.FragmentFeedBinding
 import net.pokeranalytics.android.exceptions.PAIllegalStateException
 import net.pokeranalytics.android.model.LiveData
-import net.pokeranalytics.android.model.realm.Filter
+import net.pokeranalytics.android.model.realm.*
-import net.pokeranalytics.android.model.realm.Session
-import net.pokeranalytics.android.model.realm.Transaction
 import net.pokeranalytics.android.model.realm.handhistory.HandHistory
 import net.pokeranalytics.android.ui.activity.BillingActivity
 import net.pokeranalytics.android.ui.activity.components.RequestCode
@@ -87,10 +85,10 @@ class FeedFragment : FilterableFragment(), RowRepresentableDelegate, PurchaseLis
 
 	override fun asyncListenedEntityChange(realm: Realm, clazz: Class<out RealmModel>) {
 
-		Timber.d("asyncListenedEntityChange for $clazz")
+//		Timber.d("asyncListenedEntityChange for $clazz")
 		when (clazz.kotlin) {
 			Session::class -> {
-				Timber.d("WOWOWOOWOOWOWOWOWOWOWOWOWO")
+//				Timber.d("WOWOWOOWOOWOWOWOWOWOWOWOWO")
 				this.sessionAdapter.refreshData()
 				this.sessionAdapter.notifyDataSetChanged()
 			}
@@ -286,9 +284,20 @@ class FeedFragment : FilterableFragment(), RowRepresentableDelegate, PurchaseLis
 
 		displayBlogPostButton()
 		binding.postButton.setOnClickListener {
-			Preferences.setBlogTipsTapped(requireContext())
+
-			parentActivity?.openUrl(URL.BLOG_TIPS.value)
+			getRealm().executeTransactionAsync { realm ->
-			displayBlogPostButton()
+
+				realm.where<Session>().findAll().deleteAllFromRealm()
+				realm.where<SessionSet>().findAll().deleteAllFromRealm()
+				realm.where<FlatTimeInterval>().findAll().deleteAllFromRealm()
+				realm.where<Result>().findAll().deleteAllFromRealm()
+				realm.where<ComputableResult>().findAll().deleteAllFromRealm()
+
+			}
+
+//			Preferences.setBlogTipsTapped(requireContext())
+//			parentActivity?.openUrl(URL.BLOG_TIPS.value)
+//			displayBlogPostButton()
 		}
 
 		binding.postButton.viewTreeObserver.addOnGlobalLayoutListener {
@@ -632,7 +641,7 @@ class FeedFragment : FilterableFragment(), RowRepresentableDelegate, PurchaseLis
 			show = true
 			this.badgeDrawable?.number = newCount
 		}
-		this.binding.postButton.isVisible = show
+		this.binding.postButton.isVisible = true
 		this.badgeDrawable?.isVisible = show
 	}
 

app/src/main/java/net/pokeranalytics/android/util/extensions/DateExtension.kt

@@ -7,6 +7,32 @@ import java.util.*
 
 // Calendar
 
+fun min(d1: Date, d2: Date): Date {
+	return if (d1 < d2) d1 else d2
+}
+
+fun max(d1: Date, d2: Date): Date {
+	return if (d1 > d2) d1 else d2
+}
+
+@JvmName("min1")
+fun min(d1: Date?, d2: Date?): Date? {
+	return if (d1 != null) {
+		if (d2 != null) min(d1, d2) else d1
+	} else {
+		d2
+	}
+}
+
+@JvmName("max1")
+fun max(d1: Date?, d2: Date?): Date? {
+	return if (d1 != null) {
+		if (d2 != null) max(d1, d2) else d1
+	} else {
+		d2
+	}
+}
+
 // Return a double representing the hour / minute of a date from a calendar
 fun Calendar.hourMinute(): Double {
 	return (this.get(Calendar.HOUR_OF_DAY) + this.get(Calendar.MINUTE).toDouble() / 60.0).roundOffDecimal()