#!/bin/sh
# tmux prefix+L (switch-client -l): back to the previously focused workspace --
# herdr's workspace is tmux's session. `last window` is tmux's prefix+l
# (last-window): this machine's tmux.conf took l for select-pane -R, so it has
# no key there and none here, but the : prompt has it. Going back focuses the
# old one, which track-focus records, so repeating toggles -- as in tmux.
. "$(dirname "$0")/../lib.sh"

dir="$(state_dir)"
case "${1:-}" in
window)
    ws="$(pane_info "$(active_pane)" workspace_id)"
    t="$(cat "$dir/tab.$(key_of "$ws").previous" 2>/dev/null || true)"
    [ -n "$t" ] && "$H" tab get "$t" >/dev/null 2>&1 || fail "no last window"
    "$H" tab focus "$t" >/dev/null
    ;;
session)
    w="$(cat "$dir/workspace.previous" 2>/dev/null || true)"
    [ -n "$w" ] && "$H" workspace get "$w" >/dev/null 2>&1 || fail "can't find last session"
    "$H" workspace focus "$w" >/dev/null
    ;;
*)
    fail "usage: last window|session"
    ;;
esac