refactor: move business logic out of presentation — ReadAssetFile, checksum, auth checks, MetadataValue conversions

crates/domain/src/common/value_objects/structured_data.rs

@@ -62,3 +62,34 @@ impl Default for StructuredData {
         Self::new()
     }
 }
+
+impl From<&MetadataValue> for serde_json::Value {
+    fn from(val: &MetadataValue) -> Self {
+        match val {
+            MetadataValue::String(s) => serde_json::Value::String(s.clone()),
+            MetadataValue::Integer(i) => serde_json::json!(*i),
+            MetadataValue::Float(f) => serde_json::json!(*f),
+            MetadataValue::Boolean(b) => serde_json::Value::Bool(*b),
+            MetadataValue::Null => serde_json::Value::Null,
+        }
+    }
+}
+
+impl From<serde_json::Value> for MetadataValue {
+    fn from(val: serde_json::Value) -> Self {
+        match val {
+            serde_json::Value::String(s) => MetadataValue::String(s),
+            serde_json::Value::Number(n) => {
+                if let Some(i) = n.as_i64() {
+                    MetadataValue::Integer(i)
+                } else if let Some(f) = n.as_f64() {
+                    MetadataValue::Float(f)
+                } else {
+                    MetadataValue::Null
+                }
+            }
+            serde_json::Value::Bool(b) => MetadataValue::Boolean(b),
+            _ => MetadataValue::Null,
+        }
+    }
+}