add attach and list sessions subcommand to CliArgs

src/main.rs

@@ -5,7 +5,7 @@ use std::convert::TryFrom;
 use zellij_client::{os_input_output::get_client_os_input, start_client};
 use zellij_server::{os_input_output::get_server_os_input, start_server};
 use zellij_utils::{
-    cli::{CliArgs, ConfigCli},
+    cli::{CliArgs, Command},
     consts::{ZELLIJ_TMP_DIR, ZELLIJ_TMP_LOG_DIR},
     input::config::Config,
     logging::*,
@@ -16,8 +16,8 @@ use zellij_utils::{
 pub fn main() {
     let opts = CliArgs::from_args();
 
-    if let Some(ConfigCli::Setup(setup)) = opts.option.clone() {
-        Setup::from_cli(&setup, &opts).expect("Failed to print to stdout");
+    if let Some(Command::Setup(ref setup)) = opts.command {
+        Setup::from_cli(setup, &opts).expect("Failed to print to stdout");
     }
 
     let config = match Config::try_from(&opts) {

zellij-client/src/lib.rs

@@ -101,7 +101,7 @@ pub fn start_client(mut os_input: Box<dyn ClientOsApi>, opts: CliArgs, config: C
 
     let mut command_is_executing = CommandIsExecuting::new();
 
-    let config_options = Options::from_cli(&config.options, opts.option.clone());
+    let config_options = Options::from_cli(&config.options, opts.command.clone());
 
     let full_screen_ws = os_input.get_terminal_size_using_fd(0);
     let client_attributes = ClientAttributes {

zellij-utils/src/cli.rs

@@ -17,7 +17,7 @@ pub struct CliArgs {
     pub data_dir: Option<PathBuf>,
 
     /// Run server listening at the specified socket path
-    #[structopt(long, parse(from_os_str))]
+    #[structopt(long, parse(from_os_str), hidden = true)]
     pub server: Option<PathBuf>,
 
     /// Name of a layout file in the layout directory
@@ -37,14 +37,14 @@ pub struct CliArgs {
     pub config_dir: Option<PathBuf>,
 
     #[structopt(subcommand)]
-    pub option: Option<ConfigCli>,
+    pub command: Option<Command>,
 
     #[structopt(short, long)]
     pub debug: bool,
 }
 
 #[derive(Debug, StructOpt, Clone, Serialize, Deserialize)]
-pub enum ConfigCli {
+pub enum Command {
     /// Change the behaviour of zellij
     #[structopt(name = "options")]
     Options(Options),
@@ -52,4 +52,27 @@ pub enum ConfigCli {
     /// Setup zellij and check its configuration
     #[structopt(name = "setup")]
     Setup(Setup),
+
+    /// Explore existing zellij sessions
+    #[structopt(flatten)]
+    Sessions(Sessions),
+}
+
+#[derive(Debug, StructOpt, Clone, Serialize, Deserialize)]
+pub enum Sessions {
+    /// List active sessions
+    #[structopt(alias = "ls")]
+    ListSessions,
+
+    /// Attach to session
+    #[structopt(alias = "a")]
+    Attach {
+        /// Name of the session to attach to.
+        session_name: String,
+
+        /// Force attach- session will detach from the other
+        /// zellij client (if any) and attach to this.
+        #[structopt(long, short)]
+        force: bool,
+    },
 }

zellij-utils/src/input/config.rs

@@ -7,7 +7,7 @@ use std::path::{Path, PathBuf};
 
 use super::keybinds::{Keybinds, KeybindsFromYaml};
 use super::options::Options;
-use crate::cli::{CliArgs, ConfigCli};
+use crate::cli::{CliArgs, Command};
 use crate::setup;
 
 use serde::{Deserialize, Serialize};
@@ -60,7 +60,7 @@ impl TryFrom<&CliArgs> for Config {
             return Config::new(&path);
         }
 
-        if let Some(ConfigCli::Setup(setup)) = opts.option.clone() {
+        if let Some(Command::Setup(ref setup)) = opts.command {
             if setup.clean {
                 return Config::from_default_assets();
             }
@@ -179,7 +179,7 @@ mod config_test {
     fn try_from_cli_args_with_option_clean() {
         use crate::setup::Setup;
         let mut opts = CliArgs::default();
-        opts.option = Some(ConfigCli::Setup(Setup {
+        opts.command = Some(Command::Setup(Setup {
             clean: true,
             ..Setup::default()
         }));

zellij-utils/src/input/options.rs

@@ -1,5 +1,5 @@
 //! Handles cli and configuration options
-use crate::cli::ConfigCli;
+use crate::cli::Command;
 use serde::{Deserialize, Serialize};
 use structopt::StructOpt;
 
@@ -35,8 +35,8 @@ impl Options {
         Options { simplified_ui }
     }
 
-    pub fn from_cli(&self, other: Option<ConfigCli>) -> Options {
-        if let Some(ConfigCli::Options(options)) = other {
+    pub fn from_cli(&self, other: Option<Command>) -> Options {
+        if let Some(Command::Options(options)) = other {
             Options::merge(&self, options)
         } else {
             self.to_owned()