feat(integration): Add simple integration for nushell

src/dirs.rs

@@ -13,6 +13,7 @@ const APP_ORG: &str = "valeth";
 static CONFIG: OnceLock<PathBuf> = OnceLock::new();
 static DATA: OnceLock<PathBuf> = OnceLock::new();
 static CACHE: OnceLock<PathBuf> = OnceLock::new();
+static SELECTED_PROJECT_FILE: OnceLock<PathBuf> = OnceLock::new();
 
 
 pub fn config_path() -> &'static PathBuf {
@@ -27,6 +28,10 @@ pub fn cache_path() -> &'static PathBuf {
     CACHE.get_or_init(|| init("XDG_CACHE_HOME", ".cache").unwrap())
 }
 
+pub fn selected_project_file() -> &'static PathBuf {
+    SELECTED_PROJECT_FILE.get_or_init(|| cache_path().join("selected-project"))
+}
+
 
 fn init(xdg_var: &str, fallback_home_path: &str) -> Result<PathBuf> {
     let path = xdg_path_with_fallback(xdg_var, fallback_home_path)?;

src/integrations/nushell.nu

@@ -0,0 +1,11 @@
+def --wrapped --env p [...rest: string] {
+    let selected_project = "{%SELECTED_PROJECT_FILE%}" | path expand
+
+    run-external {%PROJ_EXE%} ...$rest
+
+    # The file will not exist if the prompt was aborted
+    if ($selected_project | path exists) {
+        let dir = open $selected_project
+        cd $dir
+    }
+}

src/main.rs

@@ -10,6 +10,28 @@ use anyhow::{ensure, Result};
 use clap::{Parser, Subcommand};
 
 
+#[derive(Debug, Clone, clap::ValueEnum)]
+enum ShellType {
+    Nu,
+}
+
+impl ShellType {
+    pub fn integration(&self) -> String {
+        let template = match self {
+            Self::Nu => include_str!("./integrations/nushell.nu"),
+        };
+
+        let file_path = dbg!(dirs::selected_project_file().to_str().unwrap());
+        let current_exe = std::env::current_exe().unwrap();
+        let current_exe = current_exe.to_str().unwrap();
+
+        template
+            .replace("{%SELECTED_PROJECT_FILE%}", file_path)
+            .replace("{%PROJ_EXE%}", current_exe)
+    }
+}
+
+
 #[derive(Debug, Parser)]
 pub struct Args {
     #[command(subcommand)]
@@ -23,6 +45,9 @@ enum Command {
 
     /// List existing projects
     List,
+
+    /// Initialize shell integration
+    Init { shell: ShellType },
 }
 
 
@@ -71,12 +96,20 @@ fn handle_subcommands(mut projects: Projects, cmd: &Command) -> Result<()> {
         Command::List => {
             list_projects(&projects)?;
         }
+        Command::Init { shell } => {
+            print_shell_integration(shell);
+        }
     }
 
     Ok(())
 }
 
 
+fn print_shell_integration(shell: &ShellType) {
+    println!("{}", shell.integration());
+}
+
+
 fn add_project<P>(projects: &mut Projects, path: P) -> Result<()>
 where
     P: Into<PathBuf>,
@@ -105,9 +138,9 @@ fn list_projects(projects: &Projects) -> Result<()> {
 }
 
 fn clear_selected_project_file() -> Result<()> {
-    let cache_file = dirs::cache_path().join("selected-project");
+    let cache_file = dirs::selected_project_file();
 
-    if fs::exists(&cache_file)? {
+    if fs::exists(cache_file)? {
         fs::remove_file(cache_file)?;
     }
 
@@ -115,13 +148,15 @@ fn clear_selected_project_file() -> Result<()> {
 }
 
 fn write_selected_project_file(path: PathBuf) -> Result<()> {
-    let cache_file = dirs::cache_path().join("selected-project");
+    let cache_file = dirs::selected_project_file();
+
     let mut file = fs::OpenOptions::new()
         .write(true)
         .create(true)
         .truncate(true)
         .open(cache_file)?;
     write!(file, "{}", path.display())?;
+
     Ok(())
 }