Seems to be alright at deserialising the things so far

scryfall_deser/Cargo.toml

@@ -7,3 +7,4 @@ edition = "2021"
 
 [dependencies]
 serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0.138"

scryfall_deser/src/lib.rs

@@ -1,9 +1,9 @@
-use serde::Deserialize;
+use serde::{Deserialize};
 
 // Info from here:
 // https://scryfall.com/docs/api/cards
 #[allow(dead_code)]
-#[derive(Deserialize)]
+#[derive(Deserialize, Debug)]
 struct ScryfallCard {
     // Core Card Fields
     pub arena_id: Option<u64>,
@@ -31,7 +31,7 @@ struct ScryfallCard {
 
 // https://scryfall.com/docs/api/cards#card-face-objects
 #[allow(dead_code)]
-#[derive(Deserialize)]
+#[derive(Deserialize, Debug)]
 struct ScryfallCardFaceObject {
     pub artist: Option<String>,
     pub artist_id: Option<String>, // UUID
@@ -45,7 +45,7 @@ struct ScryfallCardFaceObject {
 
 // https://scryfall.com/docs/api/cards#related-card-objects
 #[allow(dead_code)]
-#[derive(Deserialize)]
+#[derive(Deserialize, Debug)]
 struct ScryfallRelatedCardObject {
     pub id: String, // UUID
     pub object: String, // Always "related_card"
@@ -55,25 +55,37 @@ struct ScryfallRelatedCardObject {
     pub uri: String // URI
 }
 
-#[derive(Deserialize, PartialEq)]
+#[derive(Deserialize, PartialEq, Debug)]
 enum Colour {
+    #[serde(rename = "W")]
     White,
+    #[serde(rename = "U")]
     Blue,
+    #[serde(rename = "B")]
     Black,
+    #[serde(rename = "R")]
     Red,
+    #[serde(rename = "G")]
     Green,
-    Colourless
+    //#[serde(rename = "C")]
+    // Colourless
+    // Just realised that colourless is just an empty vector... probably need a custom deserialiser,
+    // or just handle it at a higher level... probably just that - the caller/user can figure it out
 }
 
 #[cfg(test)]
 mod tests {
     use super::*;
     use std::path::PathBuf;
+    use std::fs;
 
     #[test]
     fn deserialise_nissa() {
-        let mut d = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
-        d.push("test_files/nissa.json");
-        assert!(d.exists());
+        let mut f = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
+        f.push("test_files/nissa.json");
+        assert!(f.exists());
+        let fc = fs::read_to_string(f).unwrap();
+        let nissa: ScryfallCard = serde_json::from_str(&fc).unwrap();
+        println!("{:#?}", nissa);
     }
 }