feat(types): Add utility initialization functions for StorageSize such as StorageSize::kb(324)

harmony_types/Cargo.toml

@@ -9,3 +9,4 @@ license.workspace = true
 serde.workspace = true
 url.workspace = true
 rand.workspace = true
+serde_json.workspace = true

harmony_types/src/storage.rs

@@ -1,6 +1,160 @@
 use serde::{Deserialize, Serialize};
+use std::fmt;
 
-#[derive(Copy, Clone, PartialEq, Eq, Hash, Serialize, Deserialize, PartialOrd, Ord, Debug)]
+#[derive(Clone, PartialEq, Eq, Hash, Serialize, Deserialize, PartialOrd, Ord, Debug)]
 pub struct StorageSize {
     size_bytes: u64,
+    #[serde(skip)]
+    display_suffix: Option<String>,
+}
+
+impl StorageSize {
+    pub fn new(size_bytes: u64) -> Self {
+        Self {
+            size_bytes,
+            display_suffix: None,
+        }
+    }
+
+    pub fn b(size: u64) -> Self {
+        Self {
+            size_bytes: size,
+            display_suffix: Some("B".to_string()),
+        }
+    }
+
+    pub fn kb(size: u64) -> Self {
+        Self {
+            size_bytes: size * 1024,
+            display_suffix: Some("KB".to_string()),
+        }
+    }
+
+    pub fn mb(size: u64) -> Self {
+        Self {
+            size_bytes: size * 1024 * 1024,
+            display_suffix: Some("MB".to_string()),
+        }
+    }
+
+    pub fn gb(size: u64) -> Self {
+        Self {
+            size_bytes: size * 1024 * 1024 * 1024,
+            display_suffix: Some("GB".to_string()),
+        }
+    }
+
+    pub fn gi(size: u64) -> Self {
+        Self {
+            size_bytes: size * 1024 * 1024 * 1024,
+            display_suffix: Some("GiB".to_string()),
+        }
+    }
+
+    pub fn tb(size: u64) -> Self {
+        Self {
+            size_bytes: size * 1024 * 1024 * 1024 * 1024,
+            display_suffix: Some("TB".to_string()),
+        }
+    }
+
+    pub fn ti(size: u64) -> Self {
+        Self {
+            size_bytes: size * 1024 * 1024 * 1024 * 1024,
+            display_suffix: Some("TiB".to_string()),
+        }
+    }
+
+    pub fn bytes(&self) -> u64 {
+        self.size_bytes
+    }
+}
+
+impl fmt::Display for StorageSize {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        if let Some(suffix) = &self.display_suffix {
+            write!(f, "{}{}", self.size_bytes, suffix)
+        } else {
+            write!(f, "{}B", self.size_bytes)
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_bytes() {
+        let size = StorageSize::b(123);
+        assert_eq!(size.bytes(), 123);
+        assert_eq!(size.to_string(), "123B");
+    }
+
+    #[test]
+    fn test_kilobytes() {
+        let size = StorageSize::kb(2);
+        assert_eq!(size.bytes(), 2048);
+        assert_eq!(size.to_string(), "2048KB");
+    }
+
+    #[test]
+    fn test_megabytes() {
+        let size = StorageSize::mb(3);
+        assert_eq!(size.bytes(), 3 * 1024 * 1024);
+        assert_eq!(size.to_string(), "3145728MB");
+    }
+
+    #[test]
+    fn test_gigabytes() {
+        let size = StorageSize::gb(4);
+        assert_eq!(size.bytes(), 4 * 1024 * 1024 * 1024);
+        assert_eq!(size.to_string(), "4294967296GB");
+    }
+
+    #[test]
+    fn test_gibibytes() {
+        let size = StorageSize::gi(1);
+        assert_eq!(size.bytes(), 1024 * 1024 * 1024);
+        assert_eq!(size.to_string(), "1073741824GiB");
+    }
+
+    #[test]
+    fn test_terabytes() {
+        let size = StorageSize::tb(5);
+        assert_eq!(size.bytes(), 5 * 1024 * 1024 * 1024 * 1024);
+        assert_eq!(size.to_string(), "5497558138880TB");
+    }
+
+    #[test]
+    fn test_tebibytes() {
+        let size = StorageSize::ti(1);
+        assert_eq!(size.bytes(), 1024 * 1024 * 1024 * 1024);
+        assert_eq!(size.to_string(), "1099511627776TiB");
+    }
+
+    #[test]
+    fn test_new_without_suffix() {
+        let size = StorageSize::new(999);
+        assert_eq!(size.bytes(), 999);
+        assert_eq!(size.to_string(), "999B");
+    }
+
+    #[test]
+    fn test_serde_roundtrip() {
+        let original = StorageSize::gi(1);
+        let serialized = serde_json::to_string(&original).unwrap();
+        let deserialized: StorageSize = serde_json::from_str(&serialized).unwrap();
+
+        assert_eq!(original.bytes(), deserialized.bytes());
+        // Note: suffix is lost during serialization/deserialization
+        assert_ne!(original.to_string(), deserialized.to_string());
+    }
+
+    #[test]
+    fn test_ord() {
+        let one_gb = StorageSize::gb(1);
+        let one_gi = StorageSize::gi(1);
+        assert!(one_gb < one_gi); // 1GB = 1000MB, 1GiB = 1024MB
+    }
 }