3 files changed, 67 insertions, 0 deletions
diff --git a/src/main/java/com/keuin/kbackupfabric/util/backup/builder/BackupFileNameBuilder.java b/src/main/java/com/keuin/kbackupfabric/util/backup/builder/BackupFileNameBuilder.java
new file mode 100644
index 0000000..16c598b
--- /dev/null
+++ b/src/main/java/com/keuin/kbackupfabric/util/backup/builder/BackupFileNameBuilder.java
@@ -0,0 +1,25 @@
+package com.keuin.kbackupfabric.util.backup.builder;
+
+import com.sun.istack.internal.NotNull;
+
+import java.time.LocalDateTime;
+
+public interface BackupFileNameBuilder {
+
+    static BackupFileNameBuilder primitiveZipBackup() {
+        return PrimitiveZipBackupFileNameBuilder.getInstance();
+    }
+
+    static BackupFileNameBuilder objectTreeBackup() {
+        return ObjectTreeBackupFileNameBuilder.getInstance();
+    }
+
+    /**
+     * Build a backup file name based on given information.
+     * @param time when the backup was created.
+     * @param backupName the custom name of this backup. Note that this should be a valid file name in current file system.
+     * @return the backup file name string.
+     */
+    String build(@NotNull LocalDateTime time, @NotNull String backupName);
+
+}
diff --git a/src/main/java/com/keuin/kbackupfabric/util/backup/builder/ObjectTreeBackupFileNameBuilder.java b/src/main/java/com/keuin/kbackupfabric/util/backup/builder/ObjectTreeBackupFileNameBuilder.java
new file mode 100644
index 0000000..3c15741
--- /dev/null
+++ b/src/main/java/com/keuin/kbackupfabric/util/backup/builder/ObjectTreeBackupFileNameBuilder.java
@@ -0,0 +1,20 @@
+package com.keuin.kbackupfabric.util.backup.builder;
+
+import com.keuin.kbackupfabric.util.backup.BackupFilesystemUtil;
+import com.keuin.kbackupfabric.util.backup.BackupNameTimeFormatter;
+
+import java.time.LocalDateTime;
+
+public class ObjectTreeBackupFileNameBuilder implements BackupFileNameBuilder {
+    private static final ObjectTreeBackupFileNameBuilder instance = new ObjectTreeBackupFileNameBuilder();
+
+    public static ObjectTreeBackupFileNameBuilder getInstance()  {
+        return instance;
+    }
+
+    @Override
+    public String build(LocalDateTime time, String backupName) {
+        String timeString = BackupNameTimeFormatter.localDateTimeToString(time);
+        return String.format("%s%s_%s%s", BackupFilesystemUtil.getBackupFileNamePrefix(),timeString,backupName,".json");
+    }
+}
diff --git a/src/main/java/com/keuin/kbackupfabric/util/backup/builder/PrimitiveZipBackupFileNameBuilder.java b/src/main/java/com/keuin/kbackupfabric/util/backup/builder/PrimitiveZipBackupFileNameBuilder.java
new file mode 100644
index 0000000..f910c37
--- /dev/null
+++ b/src/main/java/com/keuin/kbackupfabric/util/backup/builder/PrimitiveZipBackupFileNameBuilder.java
@@ -0,0 +1,22 @@
+package com.keuin.kbackupfabric.util.backup.builder;
+
+import com.keuin.kbackupfabric.util.backup.BackupFilesystemUtil;
+import com.keuin.kbackupfabric.util.backup.BackupNameTimeFormatter;
+
+import java.time.LocalDateTime;
+
+public class PrimitiveZipBackupFileNameBuilder implements BackupFileNameBuilder {
+
+    private static final PrimitiveZipBackupFileNameBuilder instance = new PrimitiveZipBackupFileNameBuilder();
+
+    public static PrimitiveZipBackupFileNameBuilder getInstance()  {
+        return instance;
+    }
+
+    @Override
+    public String build(LocalDateTime time, String backupName) {
+        String timeString = BackupNameTimeFormatter.localDateTimeToString(time);
+        return String.format("%s%s_%s%s", BackupFilesystemUtil.getBackupFileNamePrefix(),timeString,backupName,".zip");
+    }
+
+}