Replace some guava with kotlin

app/src/debug/java/org/tasks/preferences/fragments/Debug.kt

@@ -4,7 +4,6 @@ import android.os.Bundle
 import androidx.annotation.StringRes
 import androidx.preference.Preference
 import at.bitfire.cert4android.CustomCertManager.Companion.resetCertificates
-import com.google.common.primitives.Ints
 import org.tasks.R
 import org.tasks.billing.BillingClient
 import org.tasks.billing.Inventory
@@ -22,7 +21,7 @@ class Debug : InjectingPreferenceFragment() {
     override fun getPreferenceXml() = R.xml.preferences_debug
 
     override fun setupPreferences(savedInstanceState: Bundle?) {
-        for (pref in Ints.asList(
+        for (pref in listOf(
             R.string.p_leakcanary,
             R.string.p_flipper,
             R.string.p_strict_mode_vm,

app/src/main/java/org/tasks/activities/attribution/AttributionActivity.kt

@@ -7,7 +7,6 @@ import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import butterknife.BindView
 import butterknife.ButterKnife
-import com.google.common.base.Joiner
 import com.google.common.collect.Multimaps
 import org.tasks.R
 import org.tasks.activities.attribution.AttributionViewModel.LibraryAttribution
@@ -58,7 +57,7 @@ class AttributionActivity : ThemedInjectingAppCompatActivity() {
         val byCopyrightHolder = Multimaps.index(attributions) { lib -> lib!!.copyrightHolder }
         return byCopyrightHolder.keySet().sorted().map {
             val libraries = byCopyrightHolder[it].map { a -> "\u2022 " + a.libraryName }
-            AttributionRow(it, Joiner.on("\n").join(libraries.toList().sorted()))
+            AttributionRow(it, libraries.sorted().joinToString("\n"))
         }
     }
 

app/src/main/java/org/tasks/billing/PurchaseActivity.kt

@@ -12,9 +12,6 @@ import androidx.appcompat.widget.Toolbar
 import butterknife.ButterKnife
 import butterknife.OnClick
 import com.google.android.material.button.MaterialButtonToggleGroup
-import com.google.common.collect.ContiguousSet
-import com.google.common.collect.DiscreteDomain
-import com.google.common.collect.Range
 import org.tasks.LocalBroadcastManager
 import org.tasks.R
 import org.tasks.databinding.ActivityPurchaseBinding
@@ -147,8 +144,7 @@ class PurchaseActivity : ThemedInjectingAppCompatActivity(), OnPurchasesUpdated,
         binding.unsubscribe.visibility = if (currentSubscription == null || currentSubscription?.isCanceled == true) View.GONE else View.VISIBLE
         updateSubscribeButton()
         setWaitScreen(false)
-        adapter.submitList(
-                ArrayList(ContiguousSet.create(Range.closed(1, 10), DiscreteDomain.integers())))
+        adapter.submitList((1..10).toList())
         binding.recyclerView.layoutManager = IconLayoutManager(this)
         binding.recyclerView.adapter = adapter
     }

app/src/main/java/org/tasks/caldav/iCalendar.kt

@@ -2,11 +2,7 @@ package org.tasks.caldav
 
 import at.bitfire.ical4android.Task
 import at.bitfire.ical4android.Task.Companion.tasksFromReader
-import com.google.common.base.Predicate
 import com.google.common.collect.Iterables
-import com.google.common.collect.Lists
-import com.google.common.collect.Sets.difference
-import com.google.common.collect.Sets.newHashSet
 import com.todoroo.andlib.utility.DateUtilities
 import com.todoroo.astrid.dao.TaskDao
 import com.todoroo.astrid.helper.UUIDHelper
@@ -41,7 +37,7 @@ class iCalendar @Inject constructor(
         private val caldavDao: CaldavDao) {
 
     companion object {
-        private val IS_PARENT = Predicate { r: RelatedTo? ->
+        private val IS_PARENT: (RelatedTo?) -> Boolean = { r: RelatedTo? ->
             r!!.parameters.isEmpty || r.getParameter(Parameter.RELTYPE) === RelType.PARENT
         }
 
@@ -58,9 +54,7 @@ class iCalendar @Inject constructor(
         }
 
         fun getParent(remote: Task): String? {
-            val relatedTo = remote.relatedTo
-            val parent = Iterables.tryFind(relatedTo, IS_PARENT)
-            return if (parent.isPresent) parent.get().value else null
+            return remote.relatedTo.find(IS_PARENT)?.value
         }
 
         fun setParent(remote: Task, value: String?) {
@@ -68,9 +62,9 @@ class iCalendar @Inject constructor(
             if (isNullOrEmpty(value)) {
                 Iterables.removeIf(relatedTo, IS_PARENT)
             } else {
-                val parent = Iterables.tryFind(relatedTo, IS_PARENT)
-                if (parent.isPresent) {
-                    parent.get().value = value
+                val parent = relatedTo.find(IS_PARENT)
+                if (parent != null) {
+                    parent.value = value
                 } else {
                     relatedTo.add(RelatedTo(value))
                 }
@@ -106,8 +100,8 @@ class iCalendar @Inject constructor(
             return emptyList()
         }
         val tags = tagDataDao.getTags(categories).toMutableList()
-        val existing = Lists.transform(tags) { obj: TagData? -> obj!!.name }
-        val toCreate = difference(newHashSet(categories), newHashSet(existing))
+        val existing = tags.map(TagData::name)
+        val toCreate = categories subtract existing
         for (name in toCreate) {
             val tag = TagData(name)
             tagDataDao.createNew(tag)
@@ -120,7 +114,7 @@ class iCalendar @Inject constructor(
         val remoteModel = CaldavConverter.toCaldav(caldavTask, task)
         val categories = remoteModel.categories
         categories.clear()
-        categories.addAll(Lists.transform(tagDataDao.getTagDataForTask(task.getId())) { obj: TagData? -> obj!!.name })
+        categories.addAll(tagDataDao.getTagDataForTask(task.getId()).map { it.name!! })
         if (isNullOrEmpty(caldavTask.remoteId)) {
             val caldavUid = UUIDHelper.newUUID()
             caldavTask.remoteId = caldavUid

app/src/main/java/org/tasks/data/TagDataDao.kt

@@ -3,7 +3,6 @@ package org.tasks.data
 import androidx.core.util.Pair
 import androidx.lifecycle.LiveData
 import androidx.room.*
-import com.google.common.collect.Iterables
 import com.todoroo.astrid.data.Task
 import com.todoroo.astrid.helper.UUIDHelper
 import org.tasks.db.DbUtils
@@ -89,7 +88,7 @@ abstract class TagDataDao {
             tasks: List<Task>, partiallySelected: List<TagData>, selected: List<TagData>): List<Long> {
         val modified = HashSet<Long>()
         val keep = partiallySelected.plus(selected).map { it.remoteId!! }
-        for (sublist in Iterables.partition(tasks, DbUtils.MAX_SQLITE_ARGS - keep.size)) {
+        for (sublist in tasks.chunked(DbUtils.MAX_SQLITE_ARGS - keep.size)) {
             val tags = tagsToDelete(sublist.map(Task::id), keep)
             deleteTags(tags)
             modified.addAll(tags.map(Tag::task))

app/src/main/java/org/tasks/preferences/fragments/ScrollableWidget.kt

@@ -5,7 +5,6 @@ import android.appwidget.AppWidgetManager
 import android.content.Intent
 import android.os.Bundle
 import androidx.preference.*
-import com.google.common.primitives.Ints.max
 import com.todoroo.astrid.api.Filter
 import org.tasks.LocalBroadcastManager
 import org.tasks.R
@@ -62,7 +61,7 @@ class ScrollableWidget : InjectingPreferenceFragment() {
         val footer = setupSlider(R.string.p_widget_footer_opacity, row.value)
 
         val opacity = findPreference(R.string.opacity) as SeekBarPreference
-        opacity.value = max(header.value, row.value, footer.value)
+        opacity.value = maxOf(header.value, row.value, footer.value)
         if (header.value != row.value || header.value != footer.value) {
             (findPreference(R.string.preferences_advanced) as PreferenceCategory).initialExpandedChildrenCount = 4
         }