Remove more RxJava

app/src/main/java/com/topjohnwu/magisk/data/database/SuLogDao.kt

@@ -2,8 +2,8 @@ package com.topjohnwu.magisk.data.database
 
 import androidx.room.*
 import com.topjohnwu.magisk.model.entity.MagiskLog
-import io.reactivex.Completable
-import io.reactivex.Single
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 import java.util.*
 
 @Database(version = 1, entities = [MagiskLog::class], exportSchema = false)
@@ -18,19 +18,20 @@ abstract class SuLogDao(private val db: SuLogDatabase) {
     private val twoWeeksAgo =
         Calendar.getInstance().apply { add(Calendar.WEEK_OF_YEAR, -2) }.timeInMillis
 
-    fun deleteAll() = Completable.fromAction { db.clearAllTables() }
+    suspend fun deleteAll() = withContext(Dispatchers.IO) { db.clearAllTables() }
 
-    fun fetchAll() = deleteOutdated().andThen(fetch())
+    suspend fun fetchAll(): MutableList<MagiskLog> {
+        deleteOutdated()
+        return fetch()
+    }
 
     @Query("SELECT * FROM logs ORDER BY time DESC")
-    protected abstract fun fetch(): Single<MutableList<MagiskLog>>
-
-    @Insert
-    abstract fun insert(log: MagiskLog): Completable
+    protected abstract suspend fun fetch(): MutableList<MagiskLog>
 
     @Query("DELETE FROM logs WHERE time < :timeout")
-    protected abstract fun deleteOutdated(
-        timeout: Long = twoWeeksAgo
-    ): Completable
+    protected abstract suspend fun deleteOutdated(timeout: Long = twoWeeksAgo)
+
+    @Insert
+    abstract suspend fun insert(log: MagiskLog)
 
 }