export ARCHLIVE_PATH="/home/tom/archlive"
CUSTOM_ARCHIVES_PATH="$ARCHLIVE_PATH/airootfs/root/custom_archives"
SCRIPTS_PATH="$ARCHLIVE_PATH/airootfs/root/scripts"
LIVEUSER_HOME="$ARCHLIVE_PATH/airootfs/home/liveuser"
ARCHISO_PATH="/home/tom/Documents/archiso"
export ARCHISO_OUT="$ARCHISO_PATH/ISO"

install_package_if_missing() {
  for package in "${PACKAGES_TO_INSTALL[@]}"; do
    if ! yay -Qi "$package" &>/dev/null; then
      echo "Installing $package."
      yay -S --noconfirm --needed "$package"
    else
      echo "$package is already installed and up to date."
    fi
  done
}

cp -r /usr/share/archiso/configs/releng/* "$ARCHLIVE_PATH"
sudo cp /etc/pacman.conf $ARCHLIVE_PATH/pacman.conf
yay -Rns $(yay -Qtdq) --noconfirm
yay -Sc --noconfirm
yay -Qqe > "$ARCHLIVE_PATH/packages.x86_64"
cp "$ARCHLIVE_PATH/packages.x86_64" "$ARCHLIVE_PATH/airootfs/"

tar -czvf "$CUSTOM_ARCHIVES_PATH/etc_backup.tar.gz" -C /etc/
IGNORE=()
for exclude in "${excludes[@]}"; do
  IGNORE+=(--exclude="${exclude}")
done
tar -czvf "$CUSTOM_ARCHIVES_PATH/user_configs.tar.gz" "${IGNORE[@]}" ~/.config ~/.local

mkdir -p "$SCRIPTS_PATH"
echo '#!/usr/bin/env bash
yay -Sy --noconfirm git
...
' > "$SCRIPTS_PATH/customize.sh"
chmod +x "$SCRIPTS_PATH/customize.sh"
echo "exec calamares" > "$LIVEUSER_HOME/.xinitrc"

if [ -z "${ARCHISO_PATH}" ] || [ -z "${ARCHLIVE_PATH}" ]; then
    echo "Environment variables DOCUMENTS_PATH and/or ARCHLIVE_PATH are not set properly."
    exit 1
fi
cp "${ARCHISO_PATH}/os-release" "${ARCHLIVE_PATH}/etc/os-release"