Backup creation and restore gql endpoints (#587)

server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/BackupQuery.kt

@@ -0,0 +1,32 @@
+package suwayomi.tachidesk.graphql.queries
+
+import io.javalin.http.UploadedFile
+import suwayomi.tachidesk.graphql.types.BackupRestoreStatus
+import suwayomi.tachidesk.graphql.types.toStatus
+import suwayomi.tachidesk.manga.impl.backup.proto.ProtoBackupImport
+import suwayomi.tachidesk.manga.impl.backup.proto.ProtoBackupValidator
+
+class BackupQuery {
+    data class ValidateBackupInput(
+        val backup: UploadedFile
+    )
+    data class ValidateBackupSource(
+        val id: Long,
+        val name: String
+    )
+    data class ValidateBackupResult(
+        val missingSources: List<ValidateBackupSource>
+    )
+    fun validateBackup(
+        input: ValidateBackupInput
+    ): ValidateBackupResult {
+        val result = ProtoBackupValidator.validate(input.backup.content)
+        return ValidateBackupResult(
+            result.missingSourceIds.map { ValidateBackupSource(it.first, it.second) }
+        )
+    }
+
+    fun restoreStatus(): BackupRestoreStatus {
+        return ProtoBackupImport.backupRestoreState.value.toStatus()
+    }
+}