#!/usr/bin/env bash

# Uses fzf as an application launcher.
#
# Requires: fzf, lnch

case $OSTYPE in
    darwin*)
        cmd=$(find -L {,~}/Applications -iname '*.app' -maxdepth 2 -type d 2>/dev/null | sort -u | gui-fzf)
        [[ $cmd ]] && open "$cmd"
        ;;
    linux*)
        cmd=$(echo -n "$PATH" | xargs -d: -I{} -r -- find -L {} -maxdepth 1 -mindepth 1 -type f -executable -printf '%P\n' 2>/dev/null | sort -u | gui-fzf)
        if [[ $cmd ]]; then
            if [[ $cmd == fzf-* ]]; then
                $cmd
            else
                if ! which lnch >/dev/null; then
                    notify-send 'lnch is not installed' 'run "go get github.com/oem/lnch"'
                    exit 1
                fi

                # This disowns the subprocess from the parent shell (i.e. if
                # that shell gets closed, the subprocess will survive).
                lnch "$cmd"

                # OPTIONAL: requires shell/+tmux
                if command -v 'tmux-session-name' >/dev/null; then
                    # If this was used from a scratch tmux terminal, close it
                    [[ "$(tmux-session-name)" == scratch ]] && tmux kill-session -t scratch
                fi
            fi
        fi
        ;;
esac