init

app/src/main/java/cc/n0th1ng/tripmoney/data/dao/ExchangeRateDao.kt

@@ -0,0 +1,22 @@
+package cc.n0th1ng.tripmoney.data.dao
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.Query
+import androidx.room.Transaction
+import androidx.room.Upsert
+import cc.n0th1ng.tripmoney.data.entity.Category
+import cc.n0th1ng.tripmoney.data.entity.ExchangeRate
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface ExchangeRateDao {
+    @Upsert
+    suspend fun insert(exchangeRate: ExchangeRate)
+
+    @Query("SELECT * FROM exchange_rate WHERE id = :id")
+    suspend fun getById(id: String): ExchangeRate?
+
+    @Query("DELETE FROM exchange_rate WHERE DATE(date) < :cutoffDate")
+    suspend fun deleteOldRates(cutoffDate: String)
+}

app/src/main/java/cc/n0th1ng/tripmoney/data/dao/TripDao.kt

@@ -16,6 +16,7 @@ interface TripDao {
     @Query(
         """
         SELECT * FROM trip
+        ORDER BY DATE(trip.start_date) DESC
     """
     )
     fun tripsPaged(): PagingSource<Int, Trip>