eos-download-wallpapers

#!/bin/bash

# Copy additional wallpapers from Github or Gitlab EOS site.

Main() {
    local -r gitlab="https://gitlab.com/endeavouros-filemirror/Community-wallpapers/-/archive/main/Community-wallpapers-main.zip"
    local -r github="https://github.com/EndeavourOS-Community-Editions/Community-wallpapers/archive/refs/heads/main.zip"
    local url="$gitlab"

    source /etc/eos-script-lib-yad.conf || return 1
    case "$EOS_FILESERVER_SITE" in
        github) url="$github" ;;
        gitlab) ;;
        *) DIE "value '$EOS_FILESERVER_SITE' of variable EOS_FILESERVER_SITE is not supported." ;;
    esac

    local progname=${0##*/}
    local workdir=""
    local dirtodel=""
    local backup=no
    local -r walldir=/usr/share/endeavouros/backgrounds
    local -r zipdir=Community-wallpapers-main
    local dloader=wget

    Options "$@"

    if [ "$workdir" ] ; then
        # user managed $workdir
        [ -d "$workdir" ] || DIE "working directory '$workdir' does not exist."
        [ -w "$workdir" ] || DIE "working directory '$workdir' cannot be written."
    else
        # temporary $workdir
        workdir=$(mktemp -d) || DIE "cannot create a working directory under '/tmp'."
        chmod go-rwx "$workdir"
        dirtodel="$workdir"
    fi
    echo "Downloading wallpapers, please wait ..." >&2
    case "$dloader" in
        wget) wget -O "$workdir"/Community-wallpapers.zip "$url" || DIE "wget failed, code $?" ;;
        curl) curl -Lm 300 -o "$workdir"/Community-wallpapers.zip "$url" || DIE "curl failed, code $?" ;;
    esac

    echo "Moving wallpapers under $walldir ..." >&2
    unzip -qd "$workdir" "$workdir"/Community-wallpapers.zip || exit 1
    rm -f "$workdir"/Community-wallpapers.zip
    rm -f "$workdir/$zipdir"/{community-wallpapers.png,README.md}
    rm -rf "$workdir/$zipdir"/scripts

    if [ $backup = yes ] ; then
        sudo rm -rf $walldir/eos_wallpapers_{classic,community}.bak
        sudo mv $walldir/eos_wallpapers_classic   $walldir/eos_wallpapers_classic.bak
        sudo mv $walldir/eos_wallpapers_community $walldir/eos_wallpapers_community.bak
    else
        sudo rm -rf $walldir/{eos_wallpapers_classic,eos_wallpapers_community}
    fi

    sudo cp -r "$workdir/$zipdir"/eos_wallpapers_* $walldir/ || exit 1
    if [ "$dirtodel" = "$workdir" ] ; then
        rm -rf "$workdir"
    else
        rm -rf "$workdir/$zipdir"
    fi
    
}

Options() {
    local arg
    for arg in "$@" ; do
        case "$arg" in
            --github) url="${URLs[github]}" ;;
            --gitlab) url="${URLs[gitlab]}" ;;
            --wget)   dloader=wget ;;
            --curl)   dloader=curl ;;
            --backup) backup=yes ;;
            --workdir=*) workdir="${arg#*=}" ;;
            -h | --help) Help 0 ;;
            *) DIE "parameter '$arg' is not supported." ;;
        esac
    done
}

Help() {
    cat <<EOF
Usage:   $progname [options]
Options: -h, --help     This help.
         --gitlab       Download wallpapers from EndeavourOS pages at gitlab (default).
         --github       Download wallpapers from EndeavourOS pages at github.
         --wget         Use wget to download wallpapers (default).
         --curl         Use curl to download wallpapers.
         --backup       Backup existing wallpapers to $walldir/*.bak.
                        Default: no backups made.
EOF
    [ "$1" ] && exit $1
}

DIE() { echo "$progname: error: $1" >&2; Help 1; }

Main "$@"