feat: store end time as metadata

src/backup/mod.rs

@@ -33,6 +33,8 @@ pub enum BackupType {
 pub struct Backup<T: Clone> {
     /// When the backup was started (also corresponds to the name)
     pub start_time: chrono::DateTime<Utc>,
+    /// When the backup finished
+    pub end_time: chrono::DateTime<Utc>,
     pub size: usize,
     /// Type of the backup
     pub type_: BackupType,
@@ -117,6 +119,7 @@ impl<T: Clone> Backup<T> {
         Ok(Backup {
             type_: BackupType::Full,
             start_time,
+            end_time: chrono::Utc::now(),
             size: tar_gz.bytes_written(),
             delta,
             metadata: None,
@@ -174,6 +177,7 @@ impl<T: Clone> Backup<T> {
         Ok(Backup {
             type_: BackupType::Incremental,
             start_time,
+            end_time: chrono::Utc::now(),
             size: tar_gz.bytes_written(),
             delta,
             metadata: None,
@@ -235,19 +239,17 @@ impl<T: Clone> fmt::Display for Backup<T> {
         // Pretty-print size
         // If your backup is a petabyte or larger, this will crash and you need to re-evaluate your
         // life choices
-        let mut index = 0;
+        let index = self.size.ilog(1024) as usize;
-        let mut size = self.size as f64;
+        let size = self.size as f64 / (1024.0_f64.powi(index as i32));
-
+        let duration = self.end_time - self.start_time;
-        while size >= 1024.0 {
-            index += 1;
-            size /= 1024.0;
-        }
 
         write!(
             f,
-            "{} ({}, {:.2}{}, {})",
+            "{} ({}, {}m{}s, {:.2}{}, {})",
             self.start_time.format(Backup::FILENAME_FORMAT),
             letter,
+            duration.num_seconds() / 60,
+            duration.num_seconds() % 60,
             size,
             BYTE_SUFFIXES[index],
             self.delta