1 files changed, 202 insertions, 0 deletions
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/db/NotificationDb.kt b/app/src/main/kotlin/com/pitchedapps/frost/db/NotificationDb.kt
new file mode 100644
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+++ b/app/src/main/kotlin/com/pitchedapps/frost/db/NotificationDb.kt
@@ -0,0 +1,202 @@
+/*
+ * Copyright 2018 Allan Wang
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.pitchedapps.frost.db
+
+import androidx.room.ColumnInfo
+import androidx.room.Dao
+import androidx.room.Embedded
+import androidx.room.Entity
+import androidx.room.ForeignKey
+import androidx.room.Index
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+import androidx.room.Transaction
+import com.pitchedapps.frost.services.NOTIF_CHANNEL_GENERAL
+import com.pitchedapps.frost.services.NOTIF_CHANNEL_MESSAGES
+import com.pitchedapps.frost.services.NotificationContent
+import com.pitchedapps.frost.utils.L
+import com.raizlabs.android.dbflow.annotation.ConflictAction
+import com.raizlabs.android.dbflow.annotation.Database
+import com.raizlabs.android.dbflow.annotation.Migration
+import com.raizlabs.android.dbflow.annotation.PrimaryKey
+import com.raizlabs.android.dbflow.annotation.Table
+import com.raizlabs.android.dbflow.kotlinextensions.eq
+import com.raizlabs.android.dbflow.kotlinextensions.from
+import com.raizlabs.android.dbflow.kotlinextensions.select
+import com.raizlabs.android.dbflow.kotlinextensions.where
+import com.raizlabs.android.dbflow.sql.SQLiteType
+import com.raizlabs.android.dbflow.sql.migration.AlterTableMigration
+import com.raizlabs.android.dbflow.structure.BaseModel
+
+@Entity(
+    tableName = "notifications",
+    primaryKeys = ["notif_id", "userId"],
+    foreignKeys = [ForeignKey(
+        entity = CookieEntity::class,
+        parentColumns = ["cookie_id"],
+        childColumns = ["userId"],
+        onDelete = ForeignKey.CASCADE
+    )],
+    indices = [Index("notif_id"), Index("userId")]
+)
+data class NotificationEntity(
+    @ColumnInfo(name = "notif_id")
+    val id: Long,
+    val userId: Long,
+    val href: String,
+    val title: String?,
+    val text: String,
+    val timestamp: Long,
+    val profileUrl: String?,
+    // Type essentially refers to channel
+    val type: String,
+    val unread: Boolean
+) {
+    constructor(
+        type: String,
+        content: NotificationContent
+    ) : this(
+        content.id,
+        content.data.id,
+        content.href,
+        content.title,
+        content.text,
+        content.timestamp,
+        content.profileUrl,
+        type,
+        content.unread
+    )
+}
+
+data class NotificationContentEntity(
+    @Embedded
+    val cookie: CookieEntity,
+    @Embedded
+    val notif: NotificationEntity
+) {
+    fun toNotifContent() = NotificationContent(
+        data = cookie,
+        id = notif.id,
+        href = notif.href,
+        title = notif.title,
+        text = notif.text,
+        timestamp = notif.timestamp,
+        profileUrl = notif.profileUrl,
+        unread = notif.unread
+    )
+}
+
+@Dao
+interface NotificationDao {
+
+    /**
+     * Note that notifications are guaranteed to be ordered by descending timestamp
+     */
+    @Transaction
+    @Query("SELECT * FROM cookies INNER JOIN notifications ON cookie_id = userId WHERE userId = :userId  AND type = :type ORDER BY timestamp DESC")
+    fun _selectNotifications(userId: Long, type: String): List<NotificationContentEntity>
+
+    @Query("SELECT timestamp FROM notifications WHERE userId = :userId AND type = :type ORDER BY timestamp DESC LIMIT 1")
+    fun _selectEpoch(userId: Long, type: String): Long?
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    fun _insertNotifications(notifs: List<NotificationEntity>)
+
+    @Query("DELETE FROM notifications WHERE userId = :userId AND type = :type")
+    fun _deleteNotifications(userId: Long, type: String)
+
+    @Query("DELETE FROM notifications")
+    fun _deleteAll()
+
+    /**
+     * It is assumed that the notification batch comes from the same user
+     */
+    @Transaction
+    fun _saveNotifications(type: String, notifs: List<NotificationContent>) {
+        val userId = notifs.firstOrNull()?.data?.id ?: return
+        val entities = notifs.map { NotificationEntity(type, it) }
+        _deleteNotifications(userId, type)
+        _insertNotifications(entities)
+    }
+}
+
+suspend fun NotificationDao.deleteAll() = dao { _deleteAll() }
+
+fun NotificationDao.selectNotificationsSync(userId: Long, type: String): List<NotificationContent> =
+    _selectNotifications(userId, type).map { it.toNotifContent() }
+
+suspend fun NotificationDao.selectNotifications(userId: Long, type: String): List<NotificationContent> = dao {
+    selectNotificationsSync(userId, type)
+}
+
+/**
+ * Returns true if successful, given that there are constraints to the insertion
+ */
+suspend fun NotificationDao.saveNotifications(type: String, notifs: List<NotificationContent>): Boolean {
+    if (notifs.isEmpty()) return true
+    return dao {
+        try {
+            _saveNotifications(type, notifs)
+            true
+        } catch (e: Exception) {
+            L.e(e) { "Notif save failed for $type" }
+            false
+        }
+    }
+}
+
+suspend fun NotificationDao.latestEpoch(userId: Long, type: String): Long = dao {
+    _selectEpoch(userId, type) ?: lastNotificationTime(userId).let {
+        when (type) {
+            NOTIF_CHANNEL_GENERAL -> it.epoch
+            NOTIF_CHANNEL_MESSAGES -> it.epochIm
+            else -> -1L
+        }
+    }
+}
+
+/**
+ * Created by Allan Wang on 2017-05-30.
+ */
+
+@Database(version = NotificationDb.VERSION)
+object NotificationDb {
+    const val NAME = "Notifications"
+    const val VERSION = 2
+}
+
+@Migration(version = 2, database = NotificationDb::class)
+class NotificationMigration2(modelClass: Class<NotificationModel>) :
+    AlterTableMigration<NotificationModel>(modelClass) {
+    override fun onPreMigrate() {
+        super.onPreMigrate()
+        addColumn(SQLiteType.INTEGER, "epochIm")
+        L.d { "Added column" }
+    }
+}
+
+@Table(database = NotificationDb::class, allFields = true, primaryKeyConflict = ConflictAction.REPLACE)
+data class NotificationModel(
+    @PrimaryKey var id: Long = -1L,
+    var epoch: Long = -1L,
+    var epochIm: Long = -1L
+) : BaseModel()
+
+internal fun lastNotificationTime(id: Long): NotificationModel =
+    (select from NotificationModel::class where (NotificationModel_Table.id eq id)).querySingle()
+        ?: NotificationModel(id = id)