sb-api: label helpers wiring + gym/stat_value + policy constants (WI-2, issue #2)

crates/sb-shared/src/item.rs

@@ -27,6 +27,18 @@ pub enum ItemType {
     Material,
 }
 
+impl ItemType {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            ItemType::Weapon => "weapon",
+            ItemType::Armor => "armor",
+            ItemType::Accessory => "accessory",
+            ItemType::Consumable => "consumable",
+            ItemType::Material => "material",
+        }
+    }
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 #[serde(rename_all = "snake_case")]
 pub enum AttackType {
@@ -44,3 +56,52 @@ pub enum Quality {
     Epic,
     Legendary,
 }
+
+impl Quality {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            Quality::Common => "common",
+            Quality::Uncommon => "uncommon",
+            Quality::Rare => "rare",
+            Quality::Epic => "epic",
+            Quality::Legendary => "legendary",
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn item_type_as_str_matches_serde_wire() {
+        for variant in [
+            ItemType::Weapon,
+            ItemType::Armor,
+            ItemType::Accessory,
+            ItemType::Consumable,
+            ItemType::Material,
+        ] {
+            assert_eq!(
+                serde_json::to_value(&variant).unwrap(),
+                serde_json::json!(variant.as_str())
+            );
+        }
+    }
+
+    #[test]
+    fn quality_as_str_matches_serde_wire() {
+        for variant in [
+            Quality::Common,
+            Quality::Uncommon,
+            Quality::Rare,
+            Quality::Epic,
+            Quality::Legendary,
+        ] {
+            assert_eq!(
+                serde_json::to_value(&variant).unwrap(),
+                serde_json::json!(variant.as_str())
+            );
+        }
+    }
+}