feat(cli/list): implement list --installed command

saku-cli/src/list.rs

@@ -1,7 +1,8 @@
 use saku_lib::pkg::data;
 use saku_lib::pkg::flask::Flask;
+use saku_lib::pkg::pkg::Pkg;
 use saku_lib::prelude::*;
-use saku_lib::util::msg;
+use saku_lib::util::{msg, path};
 
 pub fn list() -> Result<()> {
     let flask_files = data::get_flasks()?;
@@ -21,3 +22,22 @@ pub fn list() -> Result<()> {
 
     Ok(())
 }
+
+pub fn list_installed() -> Result<()> {
+    let dirs = path::get_store_dirs()?;
+
+    let pkgs: Vec<Result<Pkg>> = dirs
+        .iter()
+        .map(|name| data::get_pkg(&name))
+        .collect();
+
+    for p in &pkgs {
+        if let Ok(pkg) = p {
+            println!(" - {} from {}", msg::general::name_f(&pkg.name), msg::general::url_f(&pkg.url));
+        } else if let Err(err) = p {
+            warn!("error while listing pkg: {err}");
+        }
+    }
+
+    Ok(())
+}

saku-lib/util/path.rs

@@ -225,3 +225,18 @@ pub fn flasks() -> Result<Vec<String>> {
 
     Ok(files)
 }
+
+pub fn get_store_dirs() -> Result<Vec<String>> {
+    let mut dirs = vec![];
+    for d in fs::read_dir(&*constants::STORE_DIR)? {
+        let d = d?;
+        let d_path_bind = d.path();
+        let d_path = match d_path_bind.to_str() {
+            Some(s) => Ok(s),
+            None => Err(Error::Unexpected),
+        }?;
+        let name = filepath::base_name(d_path)?;
+        dirs.push(name);
+    }
+    Ok(dirs)
+}

src/main.rs

@@ -270,8 +270,7 @@ fn main() -> Result<()> {
         Some(("list", sub_matches)) => {
             let flag = sub_matches.get_one::<u8>("installed").ok_or(make_err!())?;
             if *flag > 0 {
-                info!("installed is true");
-
+                saku_cli::list::list_installed()?;
                 return Ok(());
             }