#! /usr/bin/env nix-shell
#! nix-shell -i bash -p bash grep curl systemd git git-lfs

set -euo pipefail

grep -q 'NAME=NixOS' /etc/*-release || {
        echo -e "\033[1m\e[31mYOU ARE NOT ON NIXOS, YOU SHOULDN'T BE RUNNING THIS SCRIPT\033[0m"
        exit 1
}

mkdir -p ~/.config/nix
echo "experimental-features = nix-command flakes pipe-operators" >>~/.config/nix/nix.conf

lsblk
echo "Which disk do you want to install to (eg /dev/sda)? " && read INSTALL_DISK
systemd-ask-password "Enter your disk encryption password:" >/tmp/secret.key
systemd-ask-password "Please confirm your password:" >/tmp/secret2.key
[ $(cat /tmp/secret.key) = $(cat /tmp/secret2.key) ] || {
        echo "Passwords don't match, please try again"
        exit 1
}

echo "What is your desired host (eg enceladus)? " && read NEW_HOSTNAME

curl https://codeberg.org/da157/nix-config/raw/branch/main/hosts/nixos/$NEW_HOSTNAME/disko.nix \
        -o /tmp/disko.nix
nix --experimental-features "nix-command flakes" run github:nix-community/disko \
        -- -m destroy,format,mount /tmp/disko.nix \
        --arg disk \"$INSTALL_DISK\" ||
        {
                echo "Disk formating failed, exiting"
                exit 1
        }

mkdir -p /mnt/etc/nixos
git clone https://codeberg.org/da157/nix-config.git /mnt/etc/nixos
cd /mnt/etc/nixos

read -p "Do you want to replace $NEW_HOSTNAME's hardware.nix? (y/n) " a
[ "$a" = "y" ] && {
        nixos-generate-config \
                --root /mnt \
                --show-hardware-config \
                --no-filesystems \
                >/mnt/etc/nixos/hosts/nixos/$NEW_HOSTNAME/hardware.nix
        git add ./hosts/nixos/$NEW_HOSTNAME/hardware.nix
}
nixos-install \
        --root "/mnt" \
        --flake "git+file:///mnt/etc/nixos#$NEW_HOSTNAME"

mv ~/.config/sops/age/keys.txt /mnt/home/da157/.config/sops/age/keys.txt