#!/usr/bin/env bash
# mandible-pick — pick a tool for mandible (it requires one), then open it.
# fzf over the executables installed on PATH (no shell builtins, keywords or
# aliases). A query with a space, such as "git remote add", or one that
# matches nothing is used as typed (tool + subcommand path).
# Used by the tmux-palette "mandible" item (alias: man).

list() { # portable: no GNU find -printf (macOS)
    local d f
    IFS=: read -ra dirs <<<"$PATH"
    for d in "${dirs[@]}"; do
        for f in "$d"/*; do [[ -x $f && ! -d $f ]] && printf '%s\n' "${f##*/}"; done
    done
}
# enter: a query with a space ("git remote add") is a tool + subcommand path,
# taken as typed; otherwise the highlighted command, or the query if none.
q=$(list | sort -u | fzf --prompt 'mandible> ' --height 100% --reverse \
    --with-shell 'bash -c' \
    --bind 'enter:transform:[[ {q} == *" "* ]] && echo print-query || echo accept-or-print-query') || exit 0
[ -n "$q" ] || exit 0
# shellcheck disable=SC2086 # split "git remote" into tool + subcommands
exec mandible $q