feat(bin): t, add support for existing sessions

local/bin/t

@@ -4,6 +4,7 @@
 # https://github.com/jessarcher/dotfiles/blob/master/scripts/t
 #
 # Tweaks by Ismo Vuorinen <https://github.com/ivuorinen> 2025
+# vim: ft=bash ts=2 sw=2 et
 
 # Set environment variables for configuration with defaults
 T_ROOT="${T_ROOT:-$HOME/Code}"
@@ -16,30 +17,73 @@ error_exit()
   exit 1
 }
 
+get_directories()
+{
+  local dirs=''
+  dirs+='# Directories\n'
+  dirs+=$(find "$T_ROOT" -maxdepth 2 -mindepth 1 -type d ! -name '.git' ! -name '.svn')
+  dirs+="$(printf "\n%s" "$DOTFILES")"
+
+  echo "$dirs"
+}
+
+check_tmux()
+{
+  if ! command -v tmux &> /dev/null; then
+    error_exit "tmux is not installed."
+  fi
+
+  # check to see that tmux server is running
+  if ! tmux info &> /dev/null; then
+    tmux start-server
+  fi
+}
+
+get_sessions()
+{
+  check_tmux
+
+  local sessions=''
+  sessions+='# Sessions\n'
+  sessions+=$(tmux list-sessions -F "#{session_name}" 2> /dev/null)
+
+  echo "$sessions"
+}
+
+items=''
+
 # Select the directory
 if [[ $# -eq 1 ]]; then
   selected="$1"
 else
-  items=$(find "$T_ROOT" -maxdepth 2 -mindepth 1 -type d)
-  items+="$(printf "\n%s" "$DOTFILES")"
-  items+="$(printf "\n/tmp")"
+  items+=$(get_sessions)
+  items+='\n'
+  items+=$(get_directories)
+
   selected=$(echo -e "$items" | fzf) || exit 0 # Exit if no selection is made
 fi
 
+# If user selected a header, exit
+[[ ${selected:0:1} == "#" ]] && error_exit "You selected a header, why?"
+
 # Exit if no directory was selected
 [[ -z $selected ]] && error_exit "No directory selected."
 
 # Sanitize the session name
-dirname=$(basename "$selected" | tr '.' '_')
+session_name=$(basename "$selected")
+# If we get nothing, we are dealing with a session
+[[ $session_name == "" ]] && session_name="$selected"
+# Remove dots from the session name as tmux doesn't like them
+session_name="${session_name//./}"
 
 # Try to switch to the tmux session
-if tmux switch-client -t "=$dirname" 2> /dev/null; then
+if tmux switch-client -t "=$session_name" 2> /dev/null; then
   exit 0
 fi
 
 # Create a new tmux session or attach to an existing one
-if tmux new-session -c "$selected" -d -s "$dirname" 2> /dev/null; then
-  tmux switch-client -t "$dirname"
+if tmux new-session -c "$selected" -d -s "$session_name" 2> /dev/null; then
+  tmux switch-client -t "$session_name"
 else
-  tmux new -c "$selected" -A -s "$dirname"
+  tmux new -c "$selected" -A -s "$session_name"
 fi