feat(cli/uninstall): add uninstall command (#12209)

3 files changed, 145 insertions, 0 deletions

diff --git a/cli/flags.rs b/cli/flags.rs
index 208bfdca8..aaff45388 100644
--- a/cli/flags.rs
+++ b/cli/flags.rs
@@ -111,6 +111,12 @@ pub struct InstallFlags {
 }
 
 #[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
+pub struct UninstallFlags {
+  pub name: String,
+  pub root: Option<PathBuf>,
+}
+
+#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
 pub struct LintFlags {
   pub files: Vec<PathBuf>,
   pub ignore: Vec<PathBuf>,
@@ -166,6 +172,7 @@ pub enum DenoSubcommand {
   Fmt(FmtFlags),
   Info(InfoFlags),
   Install(InstallFlags),
+  Uninstall(UninstallFlags),
   Lsp,
   Lint(LintFlags),
   Repl(ReplFlags),
@@ -428,6 +435,8 @@ pub fn flags_from_vec(args: Vec<String>) -> clap::Result<Flags> {
     bundle_parse(&mut flags, m);
   } else if let Some(m) = matches.subcommand_matches("install") {
     install_parse(&mut flags, m);
+  } else if let Some(m) = matches.subcommand_matches("uninstall") {
+    uninstall_parse(&mut flags, m);
   } else if let Some(m) = matches.subcommand_matches("completions") {
     completions_parse(&mut flags, m);
   } else if let Some(m) = matches.subcommand_matches("test") {
@@ -499,6 +508,7 @@ If the flag is set, restrict these messages to errors.",
     .subcommand(fmt_subcommand())
     .subcommand(info_subcommand())
     .subcommand(install_subcommand())
+    .subcommand(uninstall_subcommand())
     .subcommand(lsp_subcommand())
     .subcommand(lint_subcommand())
     .subcommand(repl_subcommand())
@@ -995,6 +1005,36 @@ The installation root is determined, in order of precedence:
 These must be added to the path manually if required.")
 }
 
+fn uninstall_subcommand<'a, 'b>() -> App<'a, 'b> {
+  SubCommand::with_name("uninstall")
+    .setting(AppSettings::TrailingVarArg)
+    .arg(
+      Arg::with_name("name")
+        .required(true)
+        .multiple(false)
+        .allow_hyphen_values(true))
+    .arg(
+      Arg::with_name("root")
+        .long("root")
+        .help("Installation root")
+        .takes_value(true)
+        .multiple(false))
+    .about("Uninstall a script previously installed with deno install")
+    .long_about(
+      "Uninstalls an executable script in the installation root's bin directory.
+
+  deno uninstall serve
+
+To change the installation root, use --root:
+
+  deno uninstall --root /usr/local serve
+
+The installation root is determined, in order of precedence:
+  - --root option
+  - DENO_INSTALL_ROOT environment variable
+  - $HOME/.deno")
+}
+
 fn lsp_subcommand<'a, 'b>() -> App<'a, 'b> {
   SubCommand::with_name("lsp")
     .about("Start the language server")
@@ -1896,6 +1936,18 @@ fn install_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
   });
 }
 
+fn uninstall_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
+  let root = if matches.is_present("root") {
+    let install_root = matches.value_of("root").unwrap();
+    Some(PathBuf::from(install_root))
+  } else {
+    None
+  };
+
+  let name = matches.value_of("name").unwrap().to_string();
+  flags.subcommand = DenoSubcommand::Uninstall(UninstallFlags { name, root });
+}
+
 fn lsp_parse(flags: &mut Flags, _matches: &clap::ArgMatches) {
   flags.subcommand = DenoSubcommand::Lsp;
 }
diff --git a/cli/main.rs b/cli/main.rs
index ba16ea590..9176aca6f 100644
--- a/cli/main.rs
+++ b/cli/main.rs
@@ -53,6 +53,7 @@ use crate::flags::LintFlags;
 use crate::flags::ReplFlags;
 use crate::flags::RunFlags;
 use crate::flags::TestFlags;
+use crate::flags::UninstallFlags;
 use crate::flags::UpgradeFlags;
 use crate::fmt_errors::PrettyJsError;
 use crate::module_loader::CliModuleLoader;
@@ -487,6 +488,12 @@ async fn install_command(
   )
 }
 
+async fn uninstall_command(
+  uninstall_flags: UninstallFlags,
+) -> Result<(), AnyError> {
+  tools::installer::uninstall(uninstall_flags.name, uninstall_flags.root)
+}
+
 async fn lsp_command() -> Result<(), AnyError> {
   lsp::start().await
 }
@@ -1149,6 +1156,9 @@ fn get_subcommand(
     DenoSubcommand::Install(install_flags) => {
       install_command(flags, install_flags).boxed_local()
     }
+    DenoSubcommand::Uninstall(uninstall_flags) => {
+      uninstall_command(uninstall_flags).boxed_local()
+    }
     DenoSubcommand::Lsp => lsp_command().boxed_local(),
     DenoSubcommand::Lint(lint_flags) => {
       lint_command(flags, lint_flags).boxed_local()
diff --git a/cli/tools/installer.rs b/cli/tools/installer.rs
index 4d4709e28..18d2d20e7 100644
--- a/cli/tools/installer.rs
+++ b/cli/tools/installer.rs
@@ -139,6 +139,57 @@ pub fn infer_name_from_url(url: &Url) -> Option<String> {
   Some(stem)
 }
 
+pub fn uninstall(name: String, root: Option<PathBuf>) -> Result<(), AnyError> {
+  let root = if let Some(root) = root {
+    canonicalize_path(&root)?
+  } else {
+    get_installer_root()?
+  };
+  let installation_dir = root.join("bin");
+
+  // ensure directory exists
+  if let Ok(metadata) = fs::metadata(&installation_dir) {
+    if !metadata.is_dir() {
+      return Err(generic_error("Installation path is not a directory"));
+    }
+  }
+
+  let mut file_path = installation_dir.join(&name);
+
+  let mut removed = false;
+
+  if file_path.exists() {
+    fs::remove_file(&file_path)?;
+    println!("deleted {}", file_path.to_string_lossy());
+    removed = true
+  };
+
+  if cfg!(windows) {
+    file_path = file_path.with_extension("cmd");
+    if file_path.exists() {
+      fs::remove_file(&file_path)?;
+      println!("deleted {}", file_path.to_string_lossy());
+      removed = true
+    }
+  }
+
+  if !removed {
+    return Err(generic_error(format!("No installation found for {}", name)));
+  }
+
+  // There might be some extra files to delete
+  for ext in ["tsconfig.json", "lock.json"] {
+    file_path = file_path.with_extension(ext);
+    if file_path.exists() {
+      fs::remove_file(&file_path)?;
+      println!("deleted {}", file_path.to_string_lossy());
+    }
+  }
+
+  println!("✅ Successfully uninstalled {}", name);
+  Ok(())
+}
+
 pub fn install(
   flags: Flags,
   module_url: &str,
@@ -926,4 +977,36 @@ mod tests {
     let content = fs::read_to_string(file_path).unwrap();
     assert!(content.contains(&expected_string));
   }
+
+  #[test]
+  fn uninstall_basic() {
+    let temp_dir = TempDir::new().expect("tempdir fail");
+    let bin_dir = temp_dir.path().join("bin");
+    std::fs::create_dir(&bin_dir).unwrap();
+
+    let mut file_path = bin_dir.join("echo_test");
+    File::create(&file_path).unwrap();
+    if cfg!(windows) {
+      file_path = file_path.with_extension("cmd");
+      File::create(&file_path).unwrap();
+    }
+
+    // create extra files
+    file_path = file_path.with_extension("tsconfig.json");
+    File::create(&file_path).unwrap();
+    file_path = file_path.with_extension("lock.json");
+    File::create(&file_path).unwrap();
+
+    uninstall("echo_test".to_string(), Some(temp_dir.path().to_path_buf()))
+      .expect("Uninstall failed");
+
+    assert!(!file_path.exists());
+    assert!(!file_path.with_extension("tsconfig.json").exists());
+    assert!(!file_path.with_extension("lock.json").exists());
+
+    if cfg!(windows) {
+      file_path = file_path.with_extension("cmd");
+      assert!(!file_path.exists());
+    }
+  }
 }