#!/bin/bash

# Cloud-linux images are available for each distro used in the script. Names are important.
# Uncomment curl line to download. Centos Stream is the only distro that does noat have a
# "latest" download option.

path=/var/lib/libvirt/images/

# AlmaLinux8
file=almalinux8-base.qcow2
if test -f "$path$file"; then
	echo "$file exists."
else 
	echo "$file does not exist. Downloading..."
	curl -SL https://repo.almalinux.org/almalinux/8/cloud/x86_64/images/AlmaLinux-8-GenericCloud-latest.x86_64.qcow2 -o $path'almalinux8-base.qcow2'
fi

# CentosStream8
file=centos-stream8-base.qcow2
if test -f "$path$file"; then
	echo "$file exists."
else 
	echo "$file does not exist. Downloading..."
	curl -SL https://cloud.centos.org/centos/8-stream/x86_64/images/CentOS-Stream-GenericCloud-8-20220125.1.x86_64.qcow2 -o $path'centos-stream8-base.qcow2'
fi

# Debian11
file=debian11-base.qcow2
if test -f "$path$file"; then
	echo "$file exists."
else 
	echo "$file does not exist. Downloading..."
	curl -SL https://cloud.debian.org/images/cloud/bullseye/daily/latest/debian-11-generic-amd64-daily.qcow2 -o $path'debian11-base.qcow2'
fi

# Opensuse15.3
file=opensuse15.3-base.qcow2
if test -f "$path$file"; then
	echo "$file exists."
else 
	echo "$file does not exist. Downloading..."
	curl -SL https://download.opensuse.org/repositories/Cloud:/Images:/Leap_15.3/images/openSUSE-Leap-15.3.x86_64-1.0.1-NoCloud-Build2.146.qcow2 -o $path'opensuse15.3-base.qcow2'
fi


# Ubuntu20.04-LTS
file=ubuntu20.04-base.qcow2
if test -f "$path$file"; then
	echo "$file exists."
else 
	echo "$file does not exist. Downloading..."
	curl -SL https://cloud-images.ubuntu.com/focal/current/focal-server-cloudimg-amd64.img -o $path'ubuntu20.04-base.qcow2'
fi

genisoimage -output seed.iso -volid cidata -joliet -rock user-data meta-data

# content of user-data. Make sure to edit the file for your specific deployment needs.

#cloud-config
hostname: linux-cloud
fqdn: linux-cloud.localdomain
manage_etc_hosts: true
users:
  - name: <your username>
	sudo: ALL=(ALL) NOPASSWD:ALL
	groups: users, admin
	home: /home/<your username>
	shell: /bin/bash
	lock_passwd: false
	ssh-authorized-keys:
	  - <your public ssh key>
# only cert auth via ssh (console access can still login)
ssh_pwauth: false
disable_root: false
chpasswd:
  list: |
	 <yourusername>:<your password>
  expire: False

package_update: true
packages:
  - qemu-guest-agent
  - nano
  - (insert all the package names here)
# written to /var/log/cloud-init-output.log
final_message: "The system is finally up, after $UPTIME seconds"

# Contents of meta-data
instance-id: iid-local01\nlocal-hostname: cloudimg

echo 'Hello, lets setup your VM. Enter exact info, no error checking.'

echo 'What OS (almalinux8, centos-stream8, debian11)?'
select vmos in almalinux8 centos-stream8 debian11 opensuse15.3 ubuntu20.04; do
	echo $vmos selected.

	echo 'How many vcpus (ex 1, 4)?'
	read vmcpu

	echo 'How much RAM (ex 1024, 2048, etc)?'
	read vmmem

	echo 'How many VMs do you want (ex 1, 6, etc)?'
	read vmcount

	for i in $(seq 1 $vmcount); do

		# Assign a random name to the VM.
		name=$vmos-cloud$i-$RANDOM
		array+=($name)

		# Create a snapshot of the base image so each VM gets a clean start.
		qemu-img create -b $vmos-base.qcow2 -f qcow2 -F qcow2 $name.qcow2 12G

		# Variables are set, install the VMs.
		virt-install --name $name \
			--virt-type kvm --memory $vmmem --vcpus $vmcpu \
			--boot hd,menu=on \
			--import \
			--cdrom seed.iso \
			--disk path=$name.qcow2,device=disk \
			--graphics vnc \
			--os-variant $vmos \
			--network network:default \
			--noautoconsole

	done

# Ctrl+C to quit. The IP addresses will display in terminal.

	while true; do
		for i in $(seq 0 $((vmcount - 1))); do
			getipdata=$(virsh domifaddr ${array[$i]} | grep ipv4)
			printf "${array[$i]} leased $getipdata \n"
		done
		sleep 5

	done
	break
done