#!/bin/sh
# Flavien PERIER <perier@flavien.io>
# Install Arch Linux base

set -e
set -x

SCRIPT_TITLE="Arch configuration"
INSTALL_DIR="/mnt"

if [ $# -eq 4 ]
then
    HOSTNAME=$1
    DISK=$2
    USERNAME=$3
    PASSWORD=$4
else
    HOSTNAME=$(whiptail --title "$SCRIPT_TITLE" --inputbox "Hostname" 10 50 3>&1 1>&2 2>&3)
    DISK=$(whiptail --title "$SCRIPT_TITLE" --inputbox "Disk used for install" 10 50 3>&1 1>&2 2>&3)
    USERNAME=$(whiptail --title "$SCRIPT_TITLE" --inputbox "Username" 10 50 3>&1 1>&2 2>&3)
    PASSWORD=$(whiptail --title "$SCRIPT_TITLE" --passwordbox "Password" 10 50 3>&1 1>&2 2>&3)
fi

parted --script $DISK mklabel gpt
parted --script $DISK mkpart primary 1MiB 501MiB
parted --script $DISK mkpart primary 501MiB 4501Mib
parted --script $DISK mkpart primary 4501Mib 100%

ip link
timedatectl set-ntp true

mkfs.fat -F32 ${DISK}1
mkswap ${DISK}2
mkfs.btrfs -f ${DISK}3

swapon ${DISK}2
mount ${DISK}3 $INSTALL_DIR
btrfs subvolume create $INSTALL_DIR/@
btrfs subvolume create $INSTALL_DIR/@home
umount $INSTALL_DIR

mount -o noatime,compress=zstd,space_cache=v2,subvol=@ ${DISK}3 $INSTALL_DIR
mkdir -p $INSTALL_DIR/home
mount -o noatime,compress=zstd,space_cache=v2,subvol=@home ${DISK}3 $INSTALL_DIR/home

pacstrap $INSTALL_DIR base linux linux-firmware grub efibootmgr systemd networkmanager sudo pacman flatpak

echo "$HOSTNAME" > $INSTALL_DIR/etc/hostname

# Network configuration
cat << EOL > $INSTALL_DIR/etc/hosts
127.0.0.1 localhost
::1       localhost

127.0.0.1 $HOSTNAME
::1       $HOSTNAME
EOL

cat << EOL | sudo tee $INSTALL_DIR/etc/NetworkManager/conf.d/90-dns.conf
[main]
dns=none
EOL

cat << EOL > $INSTALL_DIR/etc/resolv.conf
nameserver 208.67.222.222
nameserver 208.67.220.220
nameserver 1.1.1.1
nameserver 1.0.0.1
nameserver 151.80.222.79
EOL
arch-chroot $INSTALL_DIR systemctl enable NetworkManager

# Fstab configuration
mkdir -p $INSTALL_DIR/boot/efi
arch-chroot $INSTALL_DIR mount ${DISK}1 /boot/efi
genfstab -U $INSTALL_DIR >> $INSTALL_DIR/etc/fstab

# Sudo configuration
echo "%sudo	ALL=(ALL:ALL) ALL" >> $INSTALL_DIR/etc/sudoers
arch-chroot $INSTALL_DIR groupadd sudo

# Aditional tools installation
arch-chroot $INSTALL_DIR pacman --noconfirm -Sy \
    tmux \
    xclip \
    fastfetch \
    inetutils \
    code \
    curl \
    wget \
    xz \
    zip \
    unzip

# DE installation
arch-chroot $INSTALL_DIR pacman --noconfirm -Sy \
    lightdm \
    pulseaudio \
    lightdm-gtk-greeter \
    exo \
    garcon \
    libxfce4ui \
    libxfce4util \
    thunar \
    thunar-archive-plugin \
    thunar-media-tags-plugin \
    thunar-volman \
    tumbler \
    xfce4-appfinder \
    xfce4-battery-plugin \
    xfce4-clipman-plugin \
    xfce4-notifyd \
    xfce4-panel \
    xfce4-power-manager \
    xfce4-pulseaudio-plugin \
    xfce4-screenshooter \
    xfce4-session \
    xfce4-settings \
    xfce4-taskmanager \
    xfce4-terminal \
    xfce4-whiskermenu-plugin \
    xfce4-xkb-plugin \
    xfconf \
    xfdesktop \
    xfwm4 \
    xfwm4-themes \

arch-chroot $INSTALL_DIR systemctl enable lightdm

# DE configuration
arch-chroot $INSTALL_DIR bash <(curl -s https://sh.flavien.io/xfce.sh) /etc/skel
sed -i 's|value="flavien"|value="arch"|g' $INSTALL_DIR/etc/skel/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-panel.xml

# Local configuration
echo "fr_FR.UTF-8 UTF-8" > $INSTALL_DIR/etc/locale.gen
echo "LANG=fr_FR.UTF-8" > $INSTALL_DIR/etc/locale.conf
echo "KEYMAP=fr" > $INSTALL_DIR/etc/vconsole.conf
arch-chroot $INSTALL_DIR ln -sf /usr/share/zoneinfo/Europe/Paris /etc/localtime
arch-chroot $INSTALL_DIR hwclock --systohc
arch-chroot $INSTALL_DIR locale-gen
cat << EOL > $INSTALL_DIR/etc/X11/xorg.conf.d/00-keyboard.conf
Section "InputClass"
        Identifier "system-keyboard"
        MatchIsKeyboard "on"
        Option "XkbLayout" "fr"
        Option "XkbModel" "pc105"
EndSection
EOL

# User configuration
curl -s https://sh.flavien.io/shell.sh | arch-chroot $INSTALL_DIR bash -

arch-chroot $INSTALL_DIR useradd -m $USERNAME
arch-chroot $INSTALL_DIR usermod -a -G sudo $USERNAME
echo "$USERNAME:$PASSWORD" | arch-chroot $INSTALL_DIR chpasswd

# Flatpak tools installation
arch-chroot $INSTALL_DIR su - $USERNAME -c "flatpak remote-add --user flathub https://flathub.org/repo/flathub.flatpakrepo"

# Grub installation
arch-chroot $INSTALL_DIR grub-install ${DISK} --force
arch-chroot $INSTALL_DIR grub-mkconfig -o /boot/grub/grub.cfg