feat: 2-week select

app/src/main/java/agzam/vyatsu/data/local/AppDatabase.kt

@@ -7,12 +7,13 @@ import androidx.room.TypeConverters
 @Database(
     entities = [
         GroupEntity::class,
+        GroupPeriodEntity::class,
         ScheduleEntity::class,
         DayEntity::class,
         LessonEntity::class,
         PreferenceEntity::class
     ],
-    version = 2,
+    version = 3,
     exportSchema = true
 )
 @TypeConverters(Converters::class)

app/src/main/java/agzam/vyatsu/data/local/GroupDao.kt

@@ -25,4 +25,13 @@ interface GroupDao {
 
     @Query("SELECT MAX(lastSyncedAt) FROM groups")
     suspend fun maxSyncedAt(): Long?
+
+    @Query("SELECT * FROM group_periods WHERE groupId = :groupId AND weekEnd >= :fromEpochDay ORDER BY weekStart")
+    suspend fun getCurrentAndFuturePeriods(groupId: String, fromEpochDay: Long): List<GroupPeriodEntity>
+
+    @Query("DELETE FROM group_periods")
+    suspend fun deleteAllPeriods()
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertPeriods(periods: List<GroupPeriodEntity>)
 }

app/src/main/java/agzam/vyatsu/data/local/GroupEntity.kt

@@ -8,9 +8,5 @@ data class GroupEntity(
     @PrimaryKey val id: String,
     val name: String,
     val faculty: String,
-    val autumnFirst: Long?,
-    val autumnSecond: Long?,
-    val springFirst: Long?,
-    val springSecond: Long?,
     val lastSyncedAt: Long
 )

app/src/main/java/agzam/vyatsu/data/local/GroupPeriodEntity.kt

@@ -0,0 +1,28 @@
+package agzam.vyatsu.data.local
+
+import agzam.vyatsu.domain.model.Season
+import androidx.room.Entity
+import androidx.room.ForeignKey
+import androidx.room.Index
+import androidx.room.PrimaryKey
+
+// Все опубликованные на сайте 2-недельные периоды группы, включая ещё не начавшиеся.
+@Entity(
+    tableName = "group_periods",
+    foreignKeys = [
+        ForeignKey(
+            entity = GroupEntity::class,
+            parentColumns = ["id"],
+            childColumns = ["groupId"],
+            onDelete = ForeignKey.CASCADE
+        )
+    ],
+    indices = [Index("groupId")]
+)
+data class GroupPeriodEntity(
+    @PrimaryKey(autoGenerate = true) val id: Long = 0,
+    val groupId: String,
+    val season: Season,
+    val weekStart: Long,
+    val weekEnd: Long
+)