Add WebLN::enable

webln-js/src/lib.rs

@@ -6,10 +6,44 @@
 #![allow(clippy::new_without_default)]
 
 use wasm_bindgen::prelude::*;
+use webln::WebLN;
 
 pub mod error;
 
+use self::error::{into_err, Result};
+
 #[wasm_bindgen(start)]
 pub fn start() {
     console_error_panic_hook::set_once();
 }
+
+/// WebLN instance
+#[wasm_bindgen(js_name = WebLN)]
+pub struct JsWebLN {
+    inner: WebLN,
+}
+
+#[wasm_bindgen(js_class = WebLN)]
+impl JsWebLN {
+    /// Compose new WebLN instance
+    #[wasm_bindgen(constructor)]
+    pub fn new() -> Result<JsWebLN> {
+        Ok(Self {
+            inner: WebLN::new().map_err(into_err)?,
+        })
+    }
+
+    /// Check if `webln` is enabled without explicitly enabling it through `webln.enable()`
+    /// (which may cause a confirmation popup in some providers)
+    #[wasm_bindgen(js_name = isEnabled)]
+    pub async fn is_enabled(&self) -> Result<bool> {
+        self.inner.is_enabled().await.map_err(into_err)
+    }
+
+    /// To begin interacting with WebLN APIs you'll first need to enable the provider.
+    /// Calling `webln.enable()` will prompt the user for permission to use the WebLN capabilities of the browser.
+    /// After that you are free to call any of the other API methods.
+    pub async fn enable(&self) -> Result<()> {
+        self.inner.enable().await.map_err(into_err)
+    }
+}

webln/src/lib.rs

@@ -91,4 +91,14 @@ impl WebLN {
             .as_bool()
             .ok_or_else(|| Error::TypeMismatch(String::from("expected a bool")))
     }
+
+    /// To begin interacting with WebLN APIs you'll first need to enable the provider.
+    /// Calling `webln.enable()` will prompt the user for permission to use the WebLN capabilities of the browser.
+    /// After that you are free to call any of the other API methods.
+    pub async fn enable(&self) -> Result<(), Error> {
+        let func: Function = self.get_func(&self.webln_obj, "enable")?;
+        let promise: Promise = Promise::resolve(&func.call0(&self.webln_obj)?);
+        JsFuture::from(promise).await?;
+        Ok(())
+    }
 }