feat: add coffee unlink command

- Add methods in `coffee_core` to enable unlinking coffee configuration from CLN configuration
- Update `coffee_cmd` crate to support the new `unlink` command
- Add documentation for the new `unlink` command

Note: The `clightningrpc-conf` from git is required to use the `rm_subconf()` method.

Signed-off-by: Tarek <tareknaser360@gmail.com>

coffee_cmd/src/cmd.rs

@@ -30,6 +30,9 @@ pub enum CoffeeCommand {
     /// configuration
     #[clap(arg_required_else_help = true)]
     Link { cln_conf: String },
+    /// Unlink coffee from the core lightning configuration
+    #[clap(arg_required_else_help = true)]
+    Unlink { cln_conf: String },
     /// Install a single by name.
     #[clap(arg_required_else_help = true)]
     Install {
@@ -100,6 +103,7 @@ impl From<&CoffeeCommand> for coffee_core::CoffeeOperation {
     fn from(value: &CoffeeCommand) -> Self {
         match value {
             CoffeeCommand::Link { cln_conf } => Self::Link(cln_conf.to_owned()),
+            CoffeeCommand::Unlink { cln_conf } => Self::Unlink(cln_conf.to_owned()),
             CoffeeCommand::Install {
                 plugin,
                 verbose,

coffee_cmd/src/main.rs

@@ -21,6 +21,9 @@ async fn run(args: CoffeeArgs, mut coffee: CoffeeManager) -> Result<(), CoffeeEr
             // and the coffee script
             coffee.link(&cln_conf).await?;
         }
+        CoffeeCommand::Unlink { cln_conf } => {
+            coffee.unlink(&cln_conf).await?;
+        }
         CoffeeCommand::Install {
             plugin,
             verbose,

coffee_core/Cargo.toml

@@ -8,13 +8,13 @@ edition = "2021"
 tokio = { version = "1.22.0", features = ["full"] }
 async-trait = "0.1.57"
 coffee_lib = { path = "../coffee_lib" }
-coffee_github = { path = "../coffee_github"  }
+coffee_github = { path = "../coffee_github" }
 log = "0.4.17"
 env_logger = "0.9.3"
-coffee_storage = { path = "../coffee_storage"  }
+coffee_storage = { path = "../coffee_storage" }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1"
-clightningrpc-conf = "0.0.3"
+clightningrpc-conf = { git = "https://github.com/laanwj/cln4rust" }
 clightningrpc-common = "0.3.0-beta.4"
 git2 = "^0.18.1"
 chrono = { version = "0.4", features = ["std"], default-features = false }

coffee_core/src/coffee.rs

@@ -243,6 +243,20 @@ impl CoffeeManager {
         conf.flush()?;
         Ok(())
     }
+
+    /// Unlink coffee from the core lightning configuration file
+    pub async fn unlink_from_cln(&mut self, cln_dir: &str) -> Result<(), CoffeeError> {
+        if self.cln_config.is_none() {
+            return Err(error!("no cln configuration found"));
+        }
+        let path_with_network = format!("{cln_dir}/{}/config", self.config.network);
+        log::info!("teardown coffee in the following cln config {path_with_network}");
+        let mut conf = self.cln_config.clone().unwrap();
+        conf.rm_subconf(&self.coffee_cln_config.clone().path)
+            .map_err(|err| error!("{}", &err.cause))?;
+        conf.flush()?;
+        Ok(())
+    }
 }
 
 #[async_trait]
@@ -424,6 +438,13 @@ impl PluginManager for CoffeeManager {
         Ok(())
     }
 
+    async fn unlink(&mut self, cln_dir: &str) -> Result<(), CoffeeError> {
+        self.unlink_from_cln(cln_dir).await?;
+        log::info!("cln configuration removed");
+        self.flush().await?;
+        Ok(())
+    }
+
     async fn add_remote(&mut self, name: &str, url: &str) -> Result<(), CoffeeError> {
         // FIXME: we should allow some error here like
         // for the add remote command the no found error for the `repository`

coffee_core/src/lib.rs

@@ -9,6 +9,8 @@ pub use coffee_lib as lib;
 pub enum CoffeeOperation {
     /// Link coffee to the lightning configuration file
     Link(String),
+    /// Unlink coffee from the lightning configuration file
+    Unlink(String),
     /// Install(plugin name, verbose run, dynamic installation)
     Install(String, bool, bool),
     /// List

coffee_lib/src/plugin_manager.rs

@@ -42,6 +42,9 @@ pub trait PluginManager {
     /// Link coffee to CLN configuration file
     async fn link(&mut self, cln_conf_path: &str) -> Result<(), CoffeeError>;
 
+    /// Unlink coffee from CLN configuration file
+    async fn unlink(&mut self, cln_conf_path: &str) -> Result<(), CoffeeError>;
+
     /// show the README file of the plugin
     async fn show(&mut self, plugin: &str) -> Result<CoffeeShow, CoffeeError>;
 

docs/docs-book/src/using-coffee.md

@@ -21,6 +21,13 @@ and you can do it with the following command
 coffee link /home/alice/.lightning
 ```
 
+If you want to unlink coffee from Core Lightning configuration at any time, you
+can do it with the following command
+
+```bash
+coffee unlink /home/alice/.lightning
+```
+
 Then you will find an include at the end of the config file at
 `/home/alice/.lightning/bitcoin/config`, in case this config file do not exist
 Coffee will create it.