# op (1Password CLI) completion                            -*- shell-script -*-

_op_commands()
{
    "$@" --help 2>/dev/null |
        awk '/^(Available |Sub)commands/{flag=1;next}/^ /&&flag{print $1}'
}

_op_command_options()
{
    case $cur in
        -*)
            for i in "${!words[@]}"; do
                [[ ${words[i]} == -* || $i -eq 0 ]] && unset "words[i]"
            done
            COMPREPLY=($(compgen -W \
                '$(_parse_usage "$1" "${words[*]} --help") --help' -- "$cur"))
            [[ ${COMPREPLY-} == *= ]] && compopt -o nospace
            return 0
            ;;
    esac
    return 1
}

_op()
{
    local cur prev words cword split
    _init_completion -s || return

    local command i
    for ((i = 1; i < cword; i++)); do
        case ${words[i]} in
            --help | --version) return ;;
            -*) ;;
            *)
                command=${words[i]}
                break
                ;;
        esac
    done

    if [[ ! -v command && $cur == -* ]]; then
        COMPREPLY=($(compgen -W '$(_parse_usage "$1" --help)' -- "$cur"))
        [[ ${COMPREPLY-} == *= ]] && compopt -o nospace
        return
    fi

    [[ -v command ]] && _op_command_options "$1" && return

    if [[ ! -v command || $command == "$prev" ]]; then
        COMPREPLY=($(compgen -W '$(_op_commands "$1" ${command-})' -- "$cur"))
        [[ ${COMPREPLY-} ]] && return
    fi

    # TODO specific command and subcommand completions
} &&
    complete -F _op op

# ex: filetype=sh