#!/bin/bash

. ./lib/numbers.sh
. ./lib/colors.sh

function create_tap {
    tap_id="${1}"
    bridge_name="${2}"

    ip tuntap add dev "tap${tap_id}" mode tap
    brctl addif "${bridge_name}" "tap${tap_id}"
    ip link set up dev "tap${tap_id}"
}

function qemu_start_vm {
    local ip="${1}"
    local subnet_name="${2}"
    local vpc_name="${3}"
    local vm_name="${4}"
    local volume_path="${5}"
    local tap_id="$(generate_random_number 10)"
    local subnet_id="$(echo "${subnet_name}" | cut -d\- -f2)"
    local mac="$(find_mac "${vpc_name}_br-${subnet_id}" "${ip}")"

    print_in_color "${COLOR_GREEN}"  "Create tap tap${tap_id}"
    create_tap "${tap_id}" "br-${subnet_id}"

    print_in_color "${COLOR_GREEN}"  "Start vm ${vm_name}"
    qemu-system-x86_64 \
      -enable-kvm \
      -cpu host \
      -m 512 \
      -smp 1 \
      -serial "unix:/tmp/${vm_name}.sock,server,nowait" \
      -monitor "unix:/tmp/${vm_name}.mon-sock,server,nowait" \
      -display "none" \
      -drive "file=${volume_path},if=virtio" \
      -netdev "tap,id=net0,ifname=tap${tap_id},script=no,downscript=no" \
      -device "virtio-net-pci,netdev=net0,mac=${mac}" \
      -daemonize
}