add: transfer refunds

crates/core/src/model/economy.rs

@@ -16,6 +16,29 @@ pub enum ProductFulfillmentMethod {
     ProfileStyle,
 }
 
+#[derive(Clone, Serialize, Deserialize)]
+pub struct ProductUploads {
+    /// Promotional thumbnails shown on the product page.
+    ///
+    /// Maximum of 4 with a maximum upload size of 2 MiB.
+    #[serde(default)]
+    pub thumbnails: Vec<usize>,
+    /// Reward given to users through active configurations after they purchase the product.
+    //
+    //  Maximum upload size of 4 MiB.
+    #[serde(default)]
+    pub reward: usize,
+}
+
+impl Default for ProductUploads {
+    fn default() -> Self {
+        Self {
+            thumbnails: Vec::new(),
+            reward: 0,
+        }
+    }
+}
+
 #[derive(Clone, Serialize, Deserialize)]
 pub struct Product {
     pub id: usize,
@@ -34,9 +57,14 @@ pub struct Product {
     /// A negative stock means the product has unlimited stock.
     pub stock: i32,
     /// If this product is limited to one purchase per person.
+    #[serde(default)]
     pub single_use: bool,
     /// Data for this product. Only used by snippets.
+    #[serde(default)]
     pub data: String,
+    /// Uploads for this product.
+    #[serde(default)]
+    pub uploads: ProductUploads,
 }
 
 impl Product {
@@ -54,6 +82,7 @@ impl Product {
             stock: 0,
             single_use: true,
             data: String::new(),
+            uploads: ProductUploads::default(),
         }
     }
 }
@@ -65,7 +94,7 @@ pub enum CoinTransferMethod {
     Purchase(usize),
 }
 
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, PartialEq, Eq)]
 pub enum CoinTransferSource {
     /// An unknown source, such as a transfer request.
     General,
@@ -73,6 +102,8 @@ pub enum CoinTransferSource {
     Sale,
     /// A purchase of coins through Stripe.
     Purchase,
+    /// A refund of coins.
+    Refund,
 }
 
 #[derive(Serialize, Deserialize)]