#!/bin/bash
#-----------------------------------------------------------------------------------------------------------------------------------
#
# MPM (Meta Package Manager) Bash Completion
#
# Copyright (C) 2024-2026 Arnaud G. GIBERT
# mailto:arnaud@rx3.net
#
# This is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program; If not, see
# <https://www.gnu.org/licenses/>.
#
#-----------------------------------------------------------------------------------------------------------------------------------

#-----------------------------------------------------------------------------------------------------------------------------------
# MPM Completion
#-----------------------------------------------------------------------------------------------------------------------------------

_mpm_completion()
{
    local mode_opts="-h --help -V --version -l --list -i --install"
    local glob_opts="-T --test -v --verbose -r --repo"
    local       cur="${COMP_WORDS[COMP_CWORD]}"
    local      prev="${COMP_WORDS[COMP_CWORD-1]}"

    local  mode_set="FALSE"
    local      repo=""
    local         i

    COMPREPLY=()

    # Scan already provided words to detect mode and repo override
    for (( i=1; i<COMP_CWORD; i++ ))
    do
        case "${COMP_WORDS[i]}" in
            -h|--help|-V|--version|-l|--list|-i|--install)
                mode_set="TRUE"
                ;;
            -r|--repo)
                repo="${COMP_WORDS[i+1]}"
                ;;
        esac
    done

    # Complete the argument of -i / --install with the live package list
    case "${prev}" in
        -i|--install)
            local mpm_names

            if [[ "${repo}" != "" ]]
            then
                mpm_names="$(mpm -r "${repo}" --list 2>/dev/null | awk 'NR>2 { gsub(/^ +/, "", $1); print $1 }')"
            else
                mpm_names="$(mpm --list 2>/dev/null | awk 'NR>2 { gsub(/^ +/, "", $1); print $1 }')"
            fi

            COMPREPLY=( $(compgen -W "${mpm_names}" -- "${cur}") )
            return 0
            ;;
        -r|--repo)
            COMPREPLY=()
            return 0
            ;;
    esac

    # Build candidate list depending on whether a mode is already set
    if [[ "${mode_set}" == "TRUE" ]]
    then
        COMPREPLY=( $(compgen -W "${glob_opts}" -- "${cur}") )
    else
        COMPREPLY=( $(compgen -W "${mode_opts} ${glob_opts}" -- "${cur}") )
    fi

    return 0
}



complete -o filenames -F _mpm_completion mpm
