tmux-sessionizer

#!/usr/bin/env bash

# DESCRIPTION: Tmux session management. Create a new session or switch to the
#              existing session by giving a session name and/or a start
#              directory, or selecting a start directory via fzf.
# SYNOPSIS:    tmux-sessionizer [DIRECTORY]
#              tmux-sessionizer [SESSION_NAME]
#              tmux-sessionizer [DIRECTORY] [SESSION_NAME]
#              tmux-sessionizer [SESSION_NAME] [DIRECTORY]

# List all the parent directories that contain the projects here
read -r -d '' parent_dirs << EOM
$HOME/oj/
$HOME/projects/*/
EOM

# Other scattered project directories
read -r -d '' other_dirs << EOM
$HOME/.config
EOM

if [[ $# -eq 1 ]]; then
  if [[ -d $1 ]]; then
    directory=$1
  else
    session_name=$1
    directory=$(pwd)
  fi
elif [[ $# -eq 2 ]]; then
  if [[ -d $1 ]]; then
    directory=$1
    session_name=$2
  else
    directory=$2
    session_name=$1
  fi
else
  project_dirs=$(fd --type d --exact-depth 1 . $parent_dirs)
  combined_dirs=$(echo -e "$project_dirs\n$other_dirs")
  directory=$(echo "$combined_dirs" | fzf --no-multi)
  [[ -z $directory ]] && exit 0
fi

if [[ -z $directory || $directory = . ]]; then
  directory=$(pwd)
fi

if [[ -z $session_name ]]; then
  session_name=$(basename "$directory" | tr . _)
fi

if ! tmux has-session -t="$session_name" 2> /dev/null; then
  if [[ -z $TMUX ]]; then
    tmux new-session -s "$session_name" -c "$directory"
  else
    tmux new-session -ds "$session_name" -c "$directory"
    tmux switch-client -t "$session_name"
  fi
else
  if [[ -z $TMUX ]]; then
    tmux attach-session -t "$session_name"
  else
    tmux switch-client -t "$session_name"
  fi
fi