1 files changed, 37 insertions, 0 deletions
diff --git a/src/main/java/com/keuin/kbackupfabric/util/backup/name/IncrementalBackupFileNameEncoder.java b/src/main/java/com/keuin/kbackupfabric/util/backup/name/IncrementalBackupFileNameEncoder.java
new file mode 100644
index 0000000..926f47c
--- /dev/null
+++ b/src/main/java/com/keuin/kbackupfabric/util/backup/name/IncrementalBackupFileNameEncoder.java
@@ -0,0 +1,37 @@
+package com.keuin.kbackupfabric.util.backup.name;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class IncrementalBackupFileNameEncoder implements BackupFileNameEncoder {
+    private static final String backupFileNamePrefix = "incremental";
+    private static final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd_HH-mm-ss");
+
+    // TODO: make this private and use singleton pattern
+    public IncrementalBackupFileNameEncoder() {
+    }
+
+    @Override
+    public String encode(String customName, LocalDateTime time) {
+        if (!isValidCustomName(customName))
+            throw new IllegalArgumentException("Invalid custom name");
+        String timeString = time.format(formatter);
+        return backupFileNamePrefix + "-" + timeString + "_" + customName + ".kbi";
+    }
+
+    @Override
+    public BackupFileNameEncoder.BackupBasicInformation decode(String fileName) {
+        Pattern pattern = Pattern.compile(
+                "^" + backupFileNamePrefix + "-" + "([0-9]{4}-[0-9]{2}-[0-9]{2}_[0-9]{2}-[0-9]{2}-[0-9]{2})_(.+)\\.kbi" + "$"
+        );
+        Matcher matcher = pattern.matcher(fileName);
+        if (matcher.find()) {
+            String timeString = matcher.group(1);
+            String customName = matcher.group(2);
+            return new BackupFileNameEncoder.BackupBasicInformation(customName, LocalDateTime.parse(timeString, formatter));
+        }
+        return null;
+    }
+}