Skip serialising empty nones

Signed-off-by: lloydmeta <[email protected]>

README.md

@@ -26,6 +26,14 @@ To fulfil the above:
 
 An example Terraform config in `terraform/prod` is provided to show how to deploy at a subdomain using Cloudflare as our (free!) CDN + WAF.
 
+## Usage:
+
+We only support resizing at the moment
+
+1. An "image" endpoint [a la Thumbor](https://thumbor.readthedocs.io/en/latest/usage.html#image-endpoint)
+2. A "metadata" endpoint [a la Thumbor](https://thumbor.readthedocs.io/en/latest/usage.html#metadata-endpoint)
+    * Difference: target image size is _not_ returned (might change in the future)
+
 ## Flow
 
 1. Layer 1 validations (is the request well-formed?)

server/src/api/responses.rs

@@ -54,7 +54,9 @@ pub struct Source {
 #[derive(Serialize, Deserialize, Eq, PartialEq, Debug)]
 pub struct Operation {
     pub r#type: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub width: Option<u32>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub height: Option<u32>,
 }