pkgs/nixfiles: make nixfiles-auto-install interactive

pkgs/nixfiles/nixfiles-auto-install.sh

@@ -2,17 +2,9 @@
 
 set -euo pipefail
 
-hostname=host${RANDOM}
-
-echo "[I] Deploying with hostname ${hostname}"
-
+hostname=""
 device=""
-for dev in "/dev/vda" "/dev/sda"; do
-  if [[ -b $dev ]]; then
-    device=$dev
-    break
-  fi
-done
+no_confirm=""
 
 while [[ $# -gt 0 ]]; do
   case $1 in
@@ -21,6 +13,15 @@ while [[ $# -gt 0 ]]; do
     shift
     shift
     ;;
+  --device)
+    device=$2
+    shift
+    shift
+    ;;
+  --no-confirm)
+    no_confirm=1
+    shift
+    ;;
   *)
     echo "unknown option: $1"
     exit 1
@@ -28,30 +29,75 @@ while [[ $# -gt 0 ]]; do
   esac
 done
 
-echo "[I] Formatting disk"
+echo ""
+echo "  This is clerie's nixfiles auto install for new hosts"
+echo "  It will do dangerous things like format your disk"
+echo "  So be careful when using it"
+echo ""
+
+if [[ -z $no_confirm ]]; then
+  read -e -r -p "Continue?" confirm
+  echo "$confirm" > /dev/null
+fi
+
+if [[ -z $hostname ]]; then
+  fallback_hostname="host${RANDOM}"
+  read -e -r -p "Hostname [$fallback_hostname]: " hostname
+  if [[ -z $hostname ]]; then
+    hostname=$fallback_hostname
+  fi
+fi
+
+echo "[I] Deploying with hostname ${hostname}"
 
 if [[ -z $device ]]; then
-  echo "[E] No device to install to"
+  device="/dev/sda"
+  while true; do
+    read -e -r -p "Disk [$device]: " dev
+    if [[ -z $dev ]]; then
+      dev=$device
+    fi
+
+    if [[ -b $dev ]]; then
+      device=$dev
+      break
+    else
+      echo "[E] Disk $dev does not exist"
+    fi
+  done
+fi
+
+echo "[I] Deploying on disk ${device}"
+
+if [[ -z $no_confirm ]]; then
+  read -e -r -p "Deploy host?" deploy
+  echo "$deploy" > /dev/null
+fi
+
+echo "[I] Formatting disk"
+
+if [[ ! -b $device ]]; then
+  echo "Disk $device does not exist"
   exit 1
 fi
 
 echo "[I] Using ${device}"
 
-parted --script $device mklabel gpt
-parted --script $device disk_set pmbr_boot on
+parted --script "$device" mklabel gpt
+parted --script "$device" disk_set pmbr_boot on
 
-parted --script $device mkpart boot 0% 512M
-parted --script $device set 1 bios_grub on
+parted --script "$device" mkpart boot 0% 512M
+parted --script "$device" set 1 bios_grub on
 
-parted --script $device mkpart root 512M 100%
+parted --script "$device" mkpart root 512M 100%
 
 echo "[I] Creating file system"
 
-mkfs.ext4 -F ${device}2
+mkfs.ext4 -F "${device}2"
 
 echo "[I] Mount file system"
 
-mount ${device}2 /mnt
+mount "${device}2" /mnt
 
 echo "[I] Generate NixOS configuration"