#! /bin/zsh
#
# this file:
#   https://dataswamp.org/~incal/conf/.zsh/nvme

nvme_name=nvme

nvme=/dev/${nvme_name}0n1

nvme_prim=${nvme}p1

nvme_swap=${nvme}p2

mp=/mnt/${nvme_name}

all-nvme () {
    swapoff-nvme
    umount-nvme

    parted-nvme # y
    fs-nvme     # y
    swap-nvme
    mount-nvme

    debian-nvme
    files-nvme

    sudo fdisk $nvme # a 1 write
    sudo update-grub

    chroot-nvme # ./install-nvme
}

ls-nvme () {
    lsblk | grep --color=never $nvme_name
}

parted-nvme () {
    local gigs=$(lsblk | grep $nvme_name | tr -s " " | cut -d\  -f 4 | head -n 1)
    local end=$(( ${gigs/G/} - 16 ))
    sudo parted $nvme mklabel msdos
    sudo parted $nvme mkpart primary ext4 0% ${end}G
    sudo parted $nvme mkpart primary ext4    ${end}G 100%
    ls-nvme
}

fs-nvme () {
    sudo mkfs.ext4 -E nodiscard $nvme_prim
}

swap-nvme () {
    sudo mkswap $nvme_swap
    sudo sync
    sudo swapon $nvme_swap
}

swapoff-nvme () {
    sudo swapoff $nvme_swap 2> /dev/null
}

mount-nvme () {
    sudo mkdir -p $mp
    sudo mount -o discard $nvme_prim $mp
}

umount-nvme () {
    sudo umount -f -q $mp
}

debian-nvme () {
    local url=https://deb.debian.org/debian
    sudo debootstrap --arch amd64 stable $mp $url
}

files-nvme () {
    sudo cp -f   /etc/network/interfaces /etc/hosts ${mp}/etc/
    sudo cp -f   /etc/apt/sources.list              ${mp}/etc/apt/
    sudo cp -rfL ~/${nvme_name}/install-${nvme_name} ~/public_html ~/*zsh*(D) ${mp}
}

chroot-nvme () {
    sudo LANG=C.UTF-8 chroot $mp /bin/sh
}