Fix api::get_invoice func

Cargo.toml

@@ -20,3 +20,10 @@ bech32 = { version = "0.9", default-features = false }
 reqwest = { version = "0.11", default-features = false, features = ["json", "rustls-tls", "socks"], optional = true }
 serde = { version = "1.0", default-features = false, features = ["alloc", "derive"] }
 serde_json = { version = "1.0", default-features = false, features = ["alloc"] }
+
+[dev-dependencies]
+tokio = { version = "1", features = ["full"] }
+
+[[example]]
+name = "get-invoice"
+required-features = ["api"]

examples/get-invoice.rs

@@ -0,0 +1,11 @@
+// Copyright (c) 2024 Yuki Kishimoto
+// Distributed under the MIT software license
+
+use lnurl_pay::{api, LightningAddress};
+
+#[tokio::main]
+async fn main() {
+    let addr = LightningAddress::parse("[email protected]").unwrap();
+    let invoice = api::get_invoice(addr, 1 * 1000, None, None).await.unwrap();
+    println!("{invoice}");
+}

src/api.rs

@@ -47,6 +47,12 @@ struct PayResponse {
     // pub nostr_pubkey: Option<String>,
 }
 
+#[derive(Serialize, Deserialize)]
+struct LnURLPayInvoice {
+    /// Encoded bolt 11 invoice
+    pr: String,
+}
+
 pub enum Lud06OrLud16 {
     Lud06(LnUrl),
     Lud16(LightningAddress),
@@ -119,5 +125,6 @@ where
         None => format!("{}{}amount={}", pay_response.callback, symbol, msats),
     };
     let resp = client.get(&url).send().await?;
-    Ok(resp.error_for_status()?.json().await?)
+    let invoice: LnURLPayInvoice = resp.error_for_status()?.json().await?;
+    Ok(invoice.pr)
 }