Add command to open a named session

fixes #90

README.md

@@ -69,25 +69,27 @@ Use `tms --help`
 ```
 Scan for all git folders in specified directorires, select one and open it as a new tmux session
 
-Usage: tms [COMMAND]
+Usage: tms [OPTIONS] [COMMAND]
 
 Commands:
-  config      Configure the defaults for search paths and excluded directories
-  start       Initialize tmux with the default sessions
-  switch      Display other sessions with a fuzzy finder and a preview window
-  windows     Display the current session's windows with a fuzzy finder and a preview window
-  kill        Kill the current tmux session and jump to another
-  sessions    Show running tmux sessions with asterisk on the current session
-  rename      Rename the active session and the working directory
-  refresh     Creates new worktree windows for the selected session
-  clone-repo  Clone repository and create a new session for it
-  init-repo   Initialize empty repository
-  bookmark    Bookmark a directory so it is available to select along with the Git repositories
-  help        Print this message or the help of the given subcommand(s)
+  config        Configure the defaults for search paths and excluded directories
+  start         Initialize tmux with the default sessions
+  switch        Display other sessions with a fuzzy finder and a preview window
+  windows       Display the current session's windows with a fuzzy finder and a preview window
+  kill          Kill the current tmux session and jump to another
+  sessions      Show running tmux sessions with asterisk on the current session
+  rename        Rename the active session and the working directory
+  refresh       Creates new worktree windows for the selected session
+  clone-repo    Clone repository and create a new session for it
+  init-repo     Initialize empty repository
+  bookmark      Bookmark a directory so it is available to select along with the Git repositories
+  open-session  Open a session
+  help          Print this message or the help of the given subcommand(s)
 
 Options:
-  -h, --help     Print help
-  -V, --version  Print version
+      --generate <GENERATOR>  [possible values: bash, elvish, fish, powershell, zsh]
+  -h, --help                  Print help
+  -V, --version               Print version
 ```
 
 ### Configuring defaults

src/cli.rs

@@ -56,6 +56,8 @@ pub enum CliCommand {
     InitRepo(InitRepoCommand),
     /// Bookmark a directory so it is available to select along with the Git repositories
     Bookmark(BookmarkCommand),
+    /// Open a session
+    OpenSession(OpenSessionCommand),
 }
 
 #[derive(Debug, Args)]
@@ -141,6 +143,12 @@ pub struct BookmarkCommand {
     path: Option<String>,
 }
 
+#[derive(Debug, Args)]
+pub struct OpenSessionCommand {
+    /// Name of the session to open.
+    session: Box<str>,
+}
+
 impl Cli {
     pub fn handle_sub_commands(&self, tmux: &Tmux) -> Result<SubCommandGiven> {
         if let Some(generator) = self.generator {
@@ -212,6 +220,11 @@ impl Cli {
                 Ok(SubCommandGiven::Yes)
             }
 
+            Some(CliCommand::OpenSession(args)) => {
+                open_session_command(args, config, tmux)?;
+                Ok(SubCommandGiven::Yes)
+            }
+
             None => Ok(SubCommandGiven::No(config.into())),
         }
     }
@@ -739,6 +752,17 @@ fn bookmark_command(args: &BookmarkCommand, mut config: Config) -> Result<()> {
     Ok(())
 }
 
+fn open_session_command(args: &OpenSessionCommand, config: Config, tmux: &Tmux) -> Result<()> {
+    let sessions = create_sessions(&config)?;
+
+    if let Some(session) = sessions.find_session(&args.session) {
+        session.switch_to(tmux, &config)?;
+        Ok(())
+    } else {
+        Err(TmsError::SessionNotFound(args.session.to_string()).into())
+    }
+}
+
 fn print_completions<G: Generator>(gen: G, cmd: &mut Command) {
     let name = if let Ok(exe) = std::env::current_exe() {
         if let Some(exe) = exe.file_name() {

src/error.rs

@@ -9,6 +9,7 @@ pub enum TmsError {
     TuiError(String),
     IoError,
     ConfigError,
+    SessionNotFound(String),
 }
 
 impl Display for TmsError {
@@ -19,6 +20,7 @@ impl Display for TmsError {
             Self::NonUtf8Path => write!(f, "Non Utf-8 Path"),
             Self::IoError => write!(f, "IO Error"),
             Self::TuiError(inner) => write!(f, "TUI error: {inner}"),
+            Self::SessionNotFound(inner) => write!(f, "Session {inner} not found"),
         }
     }
 }