Add asset download functionality with builder pattern and example

src/apis/assets.rs

@@ -39,6 +39,11 @@ impl AssetsApi {
     pub fn delete(&self) -> DeleteAssetsBuilder {
         DeleteAssetsBuilder::new(self.client.clone())
     }
+
+    /// Download an asset
+    pub fn download(&self, id: AssetId) -> DownloadAssetBuilder {
+        DownloadAssetBuilder::new(self.client.clone(), id)
+    }
 }
 
 /// Builder for listing assets
@@ -255,3 +260,42 @@ impl DeleteAssetsBuilder {
         Ok(())
     }
 }
+
+/// Builder for downloading an asset
+#[derive(Debug)]
+pub struct DownloadAssetBuilder {
+    client: Client,
+    id: AssetId,
+    edited: bool,
+}
+
+impl DownloadAssetBuilder {
+    /// Create a new download builder
+    const fn new(client: Client, id: AssetId) -> Self {
+        Self {
+            client,
+            id,
+            edited: false,
+        }
+    }
+
+    /// Download the edited version if available
+    pub fn edited(mut self) -> Self {
+        self.edited = true;
+        self
+    }
+
+    /// Execute the download
+    pub async fn execute(self) -> Result<bytes::Bytes> {
+        let path = format!("/assets/{}/original", self.id);
+        let mut req = self.client.get(&path);
+
+        if self.edited {
+            req = req.query(&[("edited", "true")]);
+        }
+
+        let response = self.client.execute(req.build()?).await?;
+        let bytes = response.bytes().await?;
+        Ok(bytes)
+    }
+}