feat: Implement API endpoints for email details and actions, and refactor email preview for client-side rendering with Shadow DOM.

1 files changed, 16 insertions, 0 deletions

diff --git a/utils/format/size.go b/utils/format/size.go
new file mode 100644
index 0000000..ce7c4fa
--- /dev/null
+++ b/utils/format/size.go
@@ -0,0 +1,16 @@
+package format
+
+import "fmt"
+
+func FormatFileSize(bytes int64) string {
+	const unit = 1024
+	if bytes < unit {
+		return fmt.Sprintf("%d B", bytes)
+	}
+	div, exp := int64(unit), 0
+	for n := bytes / unit; n >= unit; n /= unit {
+		div *= unit
+		exp++
+	}
+	return fmt.Sprintf("%.1f %cB", float64(bytes)/float64(div), "KMGTPE"[exp])
+}