add next card due message

AnkiDroid/src/main/java/com/ichi2/anki/pages/CongratsPage.kt

@@ -15,21 +15,22 @@
  */
 package com.ichi2.anki.pages
 
-import android.app.Activity
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
 import android.view.View
 import android.webkit.JavascriptInterface
 import androidx.appcompat.app.AlertDialog
 import androidx.fragment.app.DialogFragment
+import androidx.fragment.app.FragmentActivity
 import androidx.fragment.app.viewModels
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.flowWithLifecycle
 import androidx.lifecycle.lifecycleScope
 import anki.collection.OpChanges
 import com.google.android.material.appbar.MaterialToolbar
 import com.ichi2.anki.CollectionManager
+import com.ichi2.anki.CollectionManager.TR
 import com.ichi2.anki.CollectionManager.withCol
 import com.ichi2.anki.DeckPicker
 import com.ichi2.anki.FilteredDeckOptions
@@ -40,16 +41,21 @@ import com.ichi2.anki.SingleFragmentActivity
 import com.ichi2.anki.StudyOptionsActivity
 import com.ichi2.anki.dialogs.customstudy.CustomStudyDialog
 import com.ichi2.anki.launchCatchingIO
+import com.ichi2.anki.launchCatchingTask
 import com.ichi2.anki.preferences.sharedPrefs
 import com.ichi2.anki.showThemedToast
 import com.ichi2.anki.snackbar.showSnackbar
+import com.ichi2.anki.utils.SECONDS_PER_DAY
+import com.ichi2.anki.utils.TIME_HOUR
+import com.ichi2.anki.utils.TIME_MINUTE
 import com.ichi2.libanki.ChangeManager
 import com.ichi2.libanki.DeckId
 import com.ichi2.libanki.undoableOp
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import timber.log.Timber
+import kotlin.math.round
 
 class CongratsPage :
     PageFragment(),
@@ -183,28 +189,54 @@ class CongratsPage :
         private fun displayNewCongratsScreen(context: Context): Boolean =
             context.sharedPrefs().getBoolean("new_congrats_screen", false)
 
-        fun display(activity: Activity) {
+        fun display(activity: FragmentActivity) {
             if (displayNewCongratsScreen(activity)) {
                 activity.startActivity(getIntent(activity))
             } else {
-                showThemedToast(activity, R.string.studyoptions_congrats_finished, false)
+                activity.launchCatchingTask {
+                    val message = getDeckFinishedMessage(activity)
+                    showThemedToast(activity, message, false)
+                }
             }
         }
 
-        fun onReviewsCompleted(activity: Activity, cardsInDeck: Boolean) {
+        fun onReviewsCompleted(activity: FragmentActivity, cardsInDeck: Boolean) {
             if (displayNewCongratsScreen(activity)) {
                 activity.startActivity(getIntent(activity))
                 return
             }
 
             // Show a message when reviewing has finished
             if (cardsInDeck) {
-                activity.showSnackbar(R.string.studyoptions_congrats_finished)
+                activity.launchCatchingTask {
+                    val message = getDeckFinishedMessage(activity)
+                    activity.showSnackbar(message)
+                }
             } else {
                 activity.showSnackbar(R.string.studyoptions_no_cards_due)
             }
         }
 
+        // based in https://github.com/ankitects/anki/blob/9b4dd54312de8798a3f2bee07892bb3a488d1f9b/ts/routes/congrats/lib.ts#L8C17-L8C34
+        private suspend fun getDeckFinishedMessage(activity: FragmentActivity): String {
+            val info = withCol { sched.congratulationsInfo() }
+            val secsUntilNextLearn = info.secsUntilNextLearn
+            if (secsUntilNextLearn >= SECONDS_PER_DAY) {
+                return activity.getString(R.string.studyoptions_congrats_finished)
+            }
+            // https://github.com/ankitects/anki/blob/9b4dd54312de8798a3f2bee07892bb3a488d1f9b/ts/lib/tslib/time.ts#L22
+            val (unit, amount) = if (secsUntilNextLearn < TIME_MINUTE) {
+                "seconds" to secsUntilNextLearn.toDouble()
+            } else if (secsUntilNextLearn < TIME_HOUR) {
+                "minutes" to secsUntilNextLearn / TIME_MINUTE
+            } else {
+                "hours" to secsUntilNextLearn / TIME_HOUR
+            }
+
+            val nextLearnDue = TR.schedulingNextLearnDue(unit, round(amount).toInt())
+            return activity.getString(R.string.studyoptions_congrats_next_due_in, nextLearnDue)
+        }
+
         fun DeckPicker.onDeckCompleted() {
             startActivity(getIntent(this))
         }

AnkiDroid/src/main/java/com/ichi2/anki/utils/Time.kt

@@ -37,9 +37,9 @@ private const val TIME_DAY_LONG = 24 * TIME_HOUR_LONG
 // These are doubles on purpose because we want a rounded, not integer result later.
 // Use values from Anki Desktop:
 // https://github.com/ankitects/anki/blob/05cc47a5d3d48851267cda47f62af79f468eb028/rslib/src/sched/timespan.rs#L83
-private const val TIME_MINUTE = 60.0 // seconds
-private const val TIME_HOUR = 60.0 * TIME_MINUTE
-private const val TIME_DAY = 24.0 * TIME_HOUR
+const val TIME_MINUTE = 60.0 // seconds
+const val TIME_HOUR = 60.0 * TIME_MINUTE
+const val TIME_DAY = 24.0 * TIME_HOUR
 private const val TIME_MONTH = 30.0 * TIME_DAY
 private const val TIME_YEAR = 12.0 * TIME_MONTH
 

AnkiDroid/src/main/res/values/01-core.xml

@@ -111,6 +111,7 @@
     <string name="search_for_download_deck" comment="Deck search value for downloading deck">Deck Search</string>
     <string name="invalid_deck_name">Invalid deck name</string>
     <string name="studyoptions_congrats_finished">Congratulations! You have finished for now.</string>
+    <string name="studyoptions_congrats_next_due_in" comment="The param will be replaced with 'The next card will be ready in X time'">Deck finished for now! %s</string>
     <string name="studyoptions_no_cards_due">No cards are due yet</string>
 
     <string name="sd_card_not_mounted">Device storage not mounted</string>