feat(cli): `clean` subcommand

The `clean` subcommand deletes files and directories which are not necessary for Whirl to function.

3 files changed, 16 insertions, 2 deletions

diff --git a/src/cli.rs b/src/cli.rs
index e6235ec..f6e80a0 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -15,7 +15,7 @@ impl Cli {
     matches
   }
 
-  pub async fn execute(matches: ArgMatches<'_>) {
+  pub async fn execute(matches: ArgMatches<'_>) -> Result<(), Box<dyn std::error::Error>> {
     if Config::get().whirlsplash.log.test {
       error!("error");
       warn!("warn");
@@ -43,7 +43,17 @@ impl Cli {
         Self::cli().gen_completions(env!("CARGO_PKG_NAME"), Shell::Fish, ".");
       }
       debug!("generated shell completions");
+    } else if matches.is_present("clean") {
+      let cleanable_directories = vec!["./log"];
+      for dir in cleanable_directories {
+        println!("cleaning directory '{}'", dir);
+        if let Err(e) = std::fs::remove_dir_all(dir) {
+          bail!("error delete directory '{}': {}", dir, e);
+        }
+      }
     }
+
+    Ok(())
   }
 
   fn cli<'a, 'b>() -> App<'a, 'b> {
@@ -67,6 +77,8 @@ impl Cli {
             SubCommand::with_name("zsh"),
             SubCommand::with_name("fish"),
           ]),
+        SubCommand::with_name("clean")
+          .about("Delete Whirl generated files/ directories which are NOT critical. E.g., logs/"),
       ])
       .args(&[
         Arg::with_name("debug").short("d").long("debug"),
diff --git a/src/lib.rs b/src/lib.rs
index 8c6c768..1c60e70 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -19,6 +19,8 @@ extern crate diesel;
 extern crate serde_derive;
 #[macro_use]
 extern crate async_trait;
+#[macro_use]
+extern crate simple_error;
 
 pub mod cli;
 pub mod config;
diff --git a/src/main.rs b/src/main.rs
index 97ecf4a..8182fff 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -19,7 +19,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
     .start()?;
 
   // Execution
-  Cli::execute(matches).await;
+  Cli::execute(matches).await.unwrap();
 
   Ok(())
 }