feat(plugin): implementing the method to generate the invoice to put …

…inside the coffee conf

This commit assume that the developer of the plugins is running
a lightning node and is allow to receive payments with lightning.

So this is a helper method that help you to generate an BOLT 12
invoice without understand how to do it :)

Signed-off-by: Vincenzo Palazzo <[email protected]>

coffee_cmd/src/coffee_term/command_show.rs

@@ -70,7 +70,7 @@ pub fn show_remote_list(remote_list: Result<CoffeeRemote, CoffeeError>) -> Resul
     Ok(())
 }
 
-pub fn show_tips(coffee_tips: &Vec<CoffeeTip>) -> Result<(), CoffeeError> {
+pub fn show_tips(coffee_tips: &[CoffeeTip]) -> Result<(), CoffeeError> {
     term::println(
         term::format::tertiary_bold("●"),
         term::format::tertiary("Plugin"),
@@ -89,7 +89,7 @@ pub fn show_tips(coffee_tips: &Vec<CoffeeTip>) -> Result<(), CoffeeError> {
             if tip.status == "completed" {
                 term::format::positive("●").into()
             } else {
-                term::format::positive("●").into()
+                term::format::negative("●").into()
             },
             term::format::highlight(tip.for_plugin.clone().unwrap_or_default()),
             term::format::bold(tip.destination.clone().unwrap_or_default()),

coffee_plugin/src/plugin/plugin_mod.rs

@@ -2,6 +2,7 @@
 //! Coffee as a core lightning plugin.
 use std::fmt::Display;
 
+use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
 use tokio::runtime::Runtime;
 
@@ -30,6 +31,7 @@ pub fn build_plugin() -> Result<Plugin<State>, PluginError> {
             coffee_install,
             coffee_list,
             coffee_remote,
+            coffee_generate_tip,
         ],
         hooks: [],
     };
@@ -124,3 +126,28 @@ fn coffee_remote(plugin: &mut Plugin<State>, request: Value) -> Result<Value, Pl
         .map_err(from)?;
     Ok(json!({}))
 }
+
+#[rpc_method(
+    rpc_name = "coffee_generate_tip",
+    description = "Generate the BOLT 12 to add inside a plugin configuration to receive donation"
+)]
+fn coffee_generate_tip(plugin: &mut Plugin<State>, request: Value) -> Result<Value, PluginError> {
+    let runtime = Runtime::new().unwrap();
+    let coffee = plugin.state.coffee();
+
+    #[derive(Serialize, Deserialize, Debug)]
+    struct Offer {
+        pub bolt12: String,
+    }
+
+    let offer = runtime
+        .block_on(async {
+            let mut coffee = coffee.lock().unwrap();
+            coffee.cln::<Value, Offer>("offer", json!({
+                "amount": "any",
+                "description": "Generating BOLT 12 for coffee tips regarding the plugin ...",
+            })).await
+        })
+        .map_err(from)?;
+    Ok(serde_json::to_value(offer)?)
+}