Revert to Java 8

app/build.gradle

@@ -48,11 +48,11 @@ android {
 	}
 	compileOptions {
 		coreLibraryDesugaringEnabled true
-		sourceCompatibility JavaVersion.VERSION_17
+		sourceCompatibility JavaVersion.VERSION_1_8
-		targetCompatibility JavaVersion.VERSION_17
+		targetCompatibility JavaVersion.VERSION_1_8
 	}
 	kotlinOptions {
-		jvmTarget = JavaVersion.VERSION_17
+		jvmTarget = JavaVersion.VERSION_1_8.toString()
 		freeCompilerArgs += [
 			'-opt-in=kotlin.ExperimentalStdlibApi',
 			'-opt-in=kotlinx.coroutines.ExperimentalCoroutinesApi',

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/model/DateTimeAgo.kt

@@ -75,7 +75,7 @@ sealed class DateTimeAgo {
 
 	data class Absolute(private val date: LocalDate) : DateTimeAgo() {
 		override fun format(resources: Resources): String {
-			return if (date == LocalDate.EPOCH) {
+			return if (date == EPOCH_DATE) {
 				resources.getString(R.string.unknown)
 			} else {
 				date.format(formatter)
@@ -85,6 +85,8 @@ sealed class DateTimeAgo {
 		override fun toString() = "abs_${date.toEpochDay()}"
 
 		companion object {
+			// TODO: Use Java 9's LocalDate.EPOCH.
+			private val EPOCH_DATE = LocalDate.of(1970, 1, 1)
 			private val formatter = DateTimeFormatter.ofPattern("d MMMM")
 		}
 	}

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/Date.kt

@@ -3,11 +3,13 @@ package org.koitharu.kotatsu.core.util.ext
 import org.koitharu.kotatsu.core.ui.model.DateTimeAgo
 import java.time.Instant
 import java.time.LocalDate
+import java.time.LocalDateTime
 import java.time.ZoneId
 import java.time.temporal.ChronoUnit
 
 fun calculateTimeAgo(instant: Instant, showMonths: Boolean = false): DateTimeAgo {
-	val localDate = LocalDate.ofInstant(instant, ZoneId.systemDefault())
+	// TODO: Use Java 9's LocalDate.ofInstant().
+	val localDate = LocalDateTime.ofInstant(instant, ZoneId.systemDefault()).toLocalDate()
 	val now = LocalDate.now()
 	val diffDays = localDate.until(now, ChronoUnit.DAYS)