RoomのエンティティでDateTimeをエポック秒に変換するコンバーター

core/database/src/main/java/jp/co/casl0/android/simpleappblocker/core/database/utils/InstantConverter.kt

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2022 CASL0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package jp.co.casl0.android.simpleappblocker.core.database.utils
+
+import androidx.room.TypeConverter
+import kotlinx.datetime.Instant
+
+/** InstantとUnix時間のコンバーター */
+class InstantConverter {
+
+    /**
+     * Instant → Unix時間の変換
+     *
+     * @param dateTime Instant
+     * @return Unix時間
+     */
+    @TypeConverter
+    fun instantToLong(dateTime: Instant): Long {
+        return dateTime.toEpochMilliseconds()
+    }
+
+    /**
+     * Unix時間 → Instantの変換
+     *
+     * @param epoch Unix時間
+     * @return Instant
+     */
+    @TypeConverter
+    fun longToInstant(epoch: Long): Instant {
+        return Instant.fromEpochMilliseconds(epoch)
+    }
+}