dotfiles/tmux/.config/sh/alias.d/tmux.sh

#!/usr/bin/env sh

exist() { type "$1" >/dev/null 2>&1; }

# alias tmux to follow xdg-specification
# shellcheck disable=2139
alias tmux="tmux -f ${XDG_CONFIG_HOME:-$HOME/.config}/tmux/tmux.conf"

# show a list of running tmux sessions
alias tl='tmux list-sessions -F "#{session_name}" 2>/dev/null'

# fzf
if exist fzf; then
  # fzf select a tmux session to connect to, with pane preview
  alias tm='fzf_tmux'
fi

fzf_tmux() {
  if [ -z "$1" ]; then
    result=$(
      tl | fzf \
        --layout=reverse \
        --height=50% \
        --border \
        --prompt="Session> " \
        --preview="tmux_pane_tree {}" \
        --preview-window=right:99% \
        --print-query
    )
    case "$?" in
    0)
      # found a session, attaching
      tmux_attach_start "$(echo "$result" | tail --lines=1)"
      ;;
    1)
      # did not find a session, creating
      result=$(echo "$result" | head --lines=1)
      # if . was only thing entered, create one for current dir
      if [ "$result" = "." ]; then
        tmux_attach_start
        # create for query name
      else
        tmux_attach_start "$result"
      fi
      ;;
    esac
  else
    tmux_attach_start "$1"
  fi
}

unset choice
unset -f exist