gencfg

#!/bin/sh
set -eu

CWD="$(dirname "$0")"
BROOT="${2:-/}"
ROOT="${1:-$PWD/root}"

# Helpers
clone_git() {
    echo "clone_git $1"
    src="$BROOT$1"
    dst="$ROOT$1"
    url="$2"
    if [ ! -d "$dst/.git" ]; then
        git clone --depth=1 --recursive "file://$src" "$dst"
        git -C "$dst" remote set-url origin "$url"
        git -C "$dst" gc --aggressive --prune=now
    else
        git -C "$dst" pull "file://$src" --rebase -q
    fi
}

clone_rsync() {
    src="$BROOT$1"
    dst="$ROOT$1"
    shift
    rsync --info=stats0,flist0 -rlv "$@" "$src/" "$dst"
}

clone_file() {
    src="$BROOT$1"
    dst="$ROOT$1"
    shift
    install -v -Dm644 "$@" "$src" "$dst"
}

_einfo() {
    ( set +eu; . /etc/init.d/functions.sh
        einfo "$@"
    )
}

# Make user and set empty passwords
groups="$(groups mid-kid | sed -e 's/ *mid-kid *//g' -e 's/ /,/g')"
#groups="$groups,vboxguest,vboxsf"
useradd -R "$ROOT" -G "$groups" -s /bin/zsh -m mid-kid || test $? -eq 9
passwd -R "$ROOT" -d root
passwd -R "$ROOT" -l root  # disallow password login
passwd -R "$ROOT" -d mid-kid
mkdir -p "$ROOT/home/mid-kid/.config"
mkdir -p "$ROOT/home/mid-kid/.local/share"

# Copy configurations
clone_rsync /etc/modprobe.d \
    --exclude=alsa.conf
clone_rsync /etc/modules-load.d \
    --exclude=loop.conf
clone_rsync /etc/X11/xorg.conf.d
clone_rsync /etc/sddm.conf.d \
    --exclude=01gentoo.conf
clone_rsync /etc/sysctl.d \
    --exclude=README

clone_file /etc/bluetooth/main.conf
clone_file /etc/conf.d/display-manager
clone_file /etc/conf.d/dnsmasq
clone_file /etc/conf.d/keymaps
clone_file /etc/conf.d/netmount
clone_file /etc/cron.weekly/trim
clone_file /etc/dhcpcd.conf
clone_file /etc/dnsmasq.conf
clone_file /etc/elogind/logind.conf
clone_file /etc/elogind/system-sleep/50-led_off
clone_file /etc/env.d/02locale
clone_file /etc/init.d/mid-kid.tmux -m755
clone_file /etc/init.d/mid-kid.webfsd -m755
clone_file /etc/local.d/iw_regdom.start -m755
clone_file /etc/local.d/led_off.start -m755
clone_file /etc/local.d/portage_clean.start -m755
clone_file /etc/locale.gen
clone_file /etc/pam.d/i3lock
clone_file /etc/polkit-1/rules.d/40-wheel.rules
clone_file /etc/rc.conf
clone_file /etc/resolv.conf.head
clone_file /etc/security/faillock.conf
clone_file /etc/sudoers
clone_file /etc/udev/rules.d/10-rfkill.rules
clone_file /etc/udev/rules.d/10-trackpoint.rules

clone_git /home/mid-kid/.dotfiles https://github.com/mid-kid/config
clone_git /home/mid-kid/.config/firejail https://github.com/mid-kid/firejail-profiles

clone_file /home/mid-kid/.config/wallpaper.jpg

# Slow copies (many big data files)
for x in \
    /home/mid-kid/.icons \
    /home/mid-kid/.themes
do
    if [ ! -d "$ROOT$x" ]; then
        _einfo "Installing $x"
        clone_rsync "$x" -q
    fi
done

# Copy vim plugins
mkdir -p "$ROOT/home/mid-kid/.local/share/vim/plugged"
clone_rsync /home/mid-kid/.local/share/vim/autoload

for x in "$BROOT/home/mid-kid/.local/share/vim/plugged"/*; do
    name="$(basename "$x")"
    url="$(git -C "$x" remote get-url origin)"
    clone_git "/home/mid-kid/.local/share/vim/plugged/$name" "$url"
done

# Copy firefox configuration and addons
ffsrc="$(printf '%s\n' "$BROOT/home/mid-kid/.mozilla/firefox/"*.default | head -n1)"
ffdst="$ROOT/home/mid-kid/.mozilla/firefox/default"
if [ ! -d "$ffdst" ]; then
    _einfo 'Installing /home/mid-kid/.mozilla/firefox/default'
    "$CWD/copy_firefox" "$ffsrc" "$ffdst"
fi

# Copy firejail applications
mkdir -p "$ROOT/home/mid-kid/.local/share/firejail"
for name in osu ltspice; do
    if [ ! -d "$ROOT/home/mid-kid/.local/share/firejail/$name" ]; then
        _einfo "Installing /home/mid-kid/.local/share/firejail/$name"
        tar xf "$CWD/data/firejail/$name.tar.xz" -C \
            "$ROOT/home/mid-kid/.local/share/firejail"
    fi
done

# Copy live-specific scripts
install -v -Dm755 "$CWD/files/live" "$ROOT/home/mid-kid/.config/live"
_einfo 'Unpacking data/readme-0-bin.tar.gz'
tar xf "$CWD/data/readme-0-bin.tar.gz" -C "$ROOT"
_einfo 'Unpacking data/rocketset-0-bin.tar.gz'
tar xf "$CWD/data/rocketset-0-bin.tar.gz" -C "$ROOT"

mkdir -p "$ROOT/home/mid-kid/.local/share/rofi"
tac "$CWD/files/applist" | sed -e '/^$/d' -e '/^#/d' | \
    awk 'BEGIN{x=0}{print x " " $0 ".desktop"; x+=100}' | tac \
    > "$ROOT/home/mid-kid/.local/share/rofi/rofi3.druncache"

# Install system configurations
sed -e '/^hostname=/chostname="PocketRocket"' -i "$ROOT/etc/conf.d/hostname"
sed -e 's/^[^#].*localhost$/& PocketRocket/' -i "$ROOT/etc/hosts"
echo Europe/Madrid > "$ROOT/etc/timezone"
rm -f "$ROOT/etc/localtime"
cp "$ROOT/usr/share/zoneinfo/Europe/Madrid" "$ROOT/etc/localtime"

sed -e '/^#\?rc_logger=/crc_logger="YES"' \
    -e '/^#\?rc_hotplug/crc_hotplug="net.*"' \
    -i "$ROOT/etc/rc.conf"

cat > "$ROOT/etc/fstab" << 'EOF'
LiveOS_rootfs / overlay defaults 0 0
EOF
test -f "$ROOT/etc/wpa_supplicant/wpa_supplicant.conf" || \
    cat > "$ROOT/etc/wpa_supplicant/wpa_supplicant.conf" << 'EOF'
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
update_config=1
EOF
cat > "$ROOT/etc/tlp.d/my.conf" << 'EOF'
TLP_ENABLE=1
EOF
cat > "$ROOT/var/lib/sddm/state.conf" << 'EOF'
[Last]
User=mid-kid
Session=/usr/share/xsessions/i3.desktop
EOF

ln -vsfT ../kernel/modprobed_db/modprobed_db.sh "$ROOT/etc/local.d/modprobed_db.stop"
ln -vsfT ../kernel/modprobed_db/modprobed_db.sh "$ROOT/etc/cron.hourly/modprobed_db"

# Install user configurations
test -h "$ROOT/home/mid-kid/.bashrc" || rm -f "$ROOT/home/mid-kid/.bashrc"
stows="$(find "$ROOT/home/mid-kid/.dotfiles" \
    -maxdepth 1 ! -name '.*' ! -name 'zzz-*' -printf '%f ')"
stow -d "$ROOT/home/mid-kid/.dotfiles" -t "$ROOT/home/mid-kid" -v -S $stows

sed -e '/^backend = /cbackend = "xrender";' \
    -i "$ROOT/home/mid-kid/.dotfiles/i3/.config/picom/picom.conf"

mkdir -p "$ROOT/home/mid-kid/.mozilla/firefox/clean"
cat > "$ROOT/home/mid-kid/.mozilla/firefox/profiles.ini" << 'EOF'
[Profile1]
Name=clean
IsRelative=1
Path=clean

[Profile0]
Name=default
IsRelative=1
Path=default
Default=1

[General]
StartWithLastProfile=1
Version=2

[Install11457493C5A56847]
Default=default
Locked=1
EOF

mkdir -p "$ROOT/home/mid-kid/.local/share/applications"
mkdir -p "$ROOT/home/mid-kid/.local/share/icons"
for name in discord osu ltspice; do
    cp "$ROOT/home/mid-kid/.config/firejail/desktop/$name.png" \
        "$ROOT/home/mid-kid/.local/share/icons/$name.png"
    sed -e '/^Exec=/s/~/\/home\/mid-kid/' \
        "$ROOT/home/mid-kid/.config/firejail/desktop/$name.desktop" \
        > "$ROOT/home/mid-kid/.local/share/applications/$name.desktop"
done

sed -e '0,/^Name=/{//s/$/ (Clean profile)/}' \
    -e '0,/^Exec=/{//s/=.*/=firefox -P clean %u/}' \
    "$ROOT/usr/share/applications/firefox-esr.desktop" \
    > "$ROOT/home/mid-kid/.local/share/applications/firefox-clean.desktop"

apps="$ROOT/home/mid-kid/.local/share/applications"
mkdir -p "$apps"

excl="
    cups
    fcitx
    lftp
    libreoffice-base
    libreoffice-calc
    libreoffice-draw
    libreoffice-impress
    libreoffice-math
    libreoffice-writer
    org.codeberg.dnkl.foot
    org.codeberg.dnkl.foot-server
    org.codeberg.dnkl.footclient
    org.kde.kdeconnect-settings
    org.kde.kdeconnect.nonplasma
    org.kde.kdeconnect.sms
    org.kicad.bitmap2component
    org.kicad.eeschema
    org.kicad.gerbview
    org.kicad.pcbcalculator
    org.kicad.pcbnew
    phononsettings-phonon
    picom
    redshift-gtk
    rofi
    rofi-theme-selector
    spicy-spice-gtk
    urxvt-rxvt-unicode
    wine-browsedrive
    wine-notepad
    wine-uninstaller
    wine-winecfg
    wpa_gui
"
for x in $excl; do
    if [ ! -e "$BROOT/usr/share/applications/$x.desktop" ]; then
        echo "$x.desktop not installed" 2>&1
        exit 1
    fi
    echo '[Desktop Entry]' > "$apps/$x.desktop"
    echo "Name=" >> "$apps/$x.desktop"
    echo 'Type=Application' >> "$apps/$x.desktop"
    echo 'NoDisplay=true' >> "$apps/$x.desktop"
done

# Configure eselect things
for x in "$BROOT/etc/fonts/conf.d"/*.conf; do
    name="$(basename "$x")"

    if [ ! -h "$ROOT/etc/fonts/conf.d/$name" ]; then
        _einfo "configuration $name added to fontconfig"
        eselect --root="$ROOT" fontconfig enable "$name"
    fi
done

eselect --root="$ROOT" pager set less
eselect --root="$ROOT" editor set vim

# https://bugs.gentoo.org/921973
ln -vsfT "$(readlink "$BROOT/etc/java-config-2/current-system-vm")" \
    "$ROOT/etc/java-config-2/current-system-vm"

# Configure services
chroot "$ROOT" rc-update add elogind boot

for x in "$BROOT/etc/runlevels/default"/*; do
    name="$(basename "$x")"
    case "$name" in
        validity) continue ;;
        net.*) continue ;;
    esac

    if [ ! -h "$ROOT/etc/runlevels/default/$name" ]; then
        chroot "$ROOT" rc-update add "$name" default
    fi
done

# The net.* services will be handled through hotplug
ln -vsfT net.lo "$ROOT/etc/init.d/net.wlan0"
ln -vsfT net.lo "$ROOT/etc/init.d/net.eth0"

#chroot "$ROOT" rc-update add virtualbox-guest-additions default

# Generate locales
test -f "$ROOT/usr/lib/locale/locale-archive" || locale-gen -d "$ROOT"

# Update environment
chroot "$ROOT" env-update

# Fix permissions
chroot "$ROOT" chown -R mid-kid:mid-kid -h /home/mid-kid

# Fix permissions for breakage caused by GID differences (inexhaustive list)
chroot "$ROOT" chown root:messagebus /usr/libexec/dbus-daemon-launch-helper
chroot "$ROOT" chmod 4710 /usr/libexec/dbus-daemon-launch-helper
# NOTE: The proper fix is rebuilding everything in a new chroot
#       This just aids in testing before doing so