#!/bin/bash

# generates user data, meta data, and seed.iso for cloud init. for fedora 
# requires the name of the vm as an argument
#
# osinfo-query os to list all available vm types to deploy. fedora is fedora 40


image_url="https://download.fedoraproject.org/pub/fedora/linux/releases/41/Cloud/x86_64/images/Fedora-Cloud-Base-Generic-41-1.4.x86_64.qcow2"

sshkeysdir="/root/keys"

scriptdir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" #&& echo $scriptdir
dir_path="/var/lib/libvirt/images/.image_store"
src_file="${dir_path}/fedora40.qcow2"
config_dir="/var/lib/libvirt/images/.temp"
user_data="${config_dir}/user_data"
meta_data="${config_dir}/meta_data"
seed_iso="${config_dir}/seed.iso"

if [ $# -ne 1 ]; then
    echo "Usage: $0 <vm-name>"
    exit 1
fi

sudo mkdir -p "$dir_path"
sudo mkdir -p "$config_dir"

[ ! -f "$src_file" ] && echo "source image does not exist! downloading..." && sudo wget -O "$src_file" "$image_url" 

cat > "$user_data" << EOF
#cloud-config
users:
  - name: user
    ssh-authorized-keys:
EOF

for key in $sshkeysdir/*.pub; do
    echo "      - $(cat "$key")" >> $user_data
done

cat >> "$user_data" << 'EOF'
    sudo: ['ALL=(ALL) NOPASSWD:ALL']
    groups: wheel
    shell: /bin/bash
runcmd:
  - sudo growpart /dev/sda 1
  - sudo xfs_growfs /
  - sudo dnf install -y vim git
  - cd /home/user
  - git clone https://git.0nom.ch/setup
  - sudo ./setup/setup.sh
  - touch /home/user/runcmd_done
EOF

cat > "$meta_data" << EOF
instance-id: vm_id
local-hostname: $1
EOF

genisoimage -output "$seed_iso" -volid cidata -joliet -rock "$user_data" "$meta_data" &> /dev/null || { echo "Failed to create seed.iso."; exit 1; }

echo "Configuration files generated successfully"