# Copyright 1999-2018 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id: $

DESCRIPTION="Select AwesomeWM theme"
MAINTAINER="James Campbell"
VERSION="20180116"

find_targets() {
    local f
    for f in "${HOME}"/.config${EPREFIX}/awesome/themes/*
    do
        [[ -d ${f} ]] && basename "${f}"
    done
}

remove_symlink() {
    rm "${HOME}/.config${EPREFIX}/awesome/themes/selected"
}

set_symlink() {
    local target=$1

    if is_number "${target}"
    then
        local targets=( $(find_targets) )
        target=${targets[target-1]}
    fi

    [[ -z ${target} || ! -d ${HOME}/.config${EPREFIX}/awesome/themes/${target} ]] \
        && die -q "Target \"$1\" does not appear to be valid!"

    ln -s "${target}" "${HOME}/.config${EPREFIX}/awesome/themes/selected"
}

### show action

describe_show() {
    echo "Show the current theme"
}

do_show() {
    write_list_start "Current theme:"
    if [[ -L "${HOME}/.config${EPREFIX}/awesome/themes/selected" ]]; then
        local theme=$(canonicalise "${HOME}/.config${EPREFIX}/awesome/themes/selected")
        write_kv_list_entry "${theme%/}" ""
    else
        write_kv_list_entry "(unset)" ""
    fi
}

### list action ###

describe_list() {
    echo "List available themes"
}

do_list() {
    local i targets=( $(find_targets) )

    write_list_start "Available themes:"
    for (( i = 0; i < ${#targets[@]}; i++ )); do
        # highlight the target where the symlink is pointing to
        [[ ${targets[i]} = \
            $(basename "$(canonicalise "${HOME}/.config${EPREFIX}/awesome/themes/selected")") ]] \
            && targets[i]=$(highlight_marker "${targets[i]}")
    done
    write_numbered_list -m "(none found)" "${targets[@]}"
}

### set action ###

describe_set() {
    echo "Set the theme"
}

describe_set_parameters() {
    echo "<target>"
}

describe_set_options() {
    echo "target : Target name or number (from 'list' action)"
}

do_set() {
    [[ -z $1 ]] && die -q "You didn't tell me what to set the symlink to"
    [[ $# -gt 1 ]] && die -q "Too many parameters"

    if [[ -L ${HOME}/.config${EPREFIX}/awesome/themes/selected ]]; then
        # existing symlink
        remove_symlink || die -q "Couldn't remove existing symlink"
        set_symlink "$1" || die -q "Couldn't set a new symlink"
    elif [[ -e ${HOME}/.config${EPREFIX}/awesome/themes/selected ]]; then
        # we have something strange
        die -q "${HOME}/.config${EPREFIX}/awesome/themes/selected exists but is not a symlink"
    else
        set_symlink "$1" || die -q "Couldn't set a new symlink"
    fi
}

# vim: ts=4 sw=4 noet fdm=marker