#!/bin/bash
vmsDir="$HOME/vms"

function main(){
  downloadSysList
  filterList
  downloadSysIsos
  showVms
}

function downloadSysList(){
  mkdir -p $vmsDir
  wget --no-check-certificate -q "http://fanta.56k.es/q/systems.lst" -O $vmsDir/.systems.lst
}

function filterList(){
  nl=$(cat /home/fanta/vms/.systems.lst | wc -l)
  cat -n  $vmsDir/.systems.lst | cut -d ";" -f 1,2 | tr ";" " "
  echo " "
  read -p "Number: " option
  if [[ $option == ?(-)+([0-9]) ]] ; then
    if [ "$option" -ge 1 ] && [ "$option" -le $nl ]; then
      cat $vmsDir/.systems.lst | head -$option | tail -1 > $vmsDir/.systems2.lst
      mv $vmsDir/.systems2.lst $vmsDir/.systems.lst
    else
      echo -e "\nError: Try again and enter a valid number my friend"
      exit
    fi

  else
    echo -e "\nError: Try again and enter a integer number my friend"
    exit
  fi
}

function downloadSysIsos(){
  while read system; do
    data=("$(echo "$system" | cut -d ";" -f 1)" "$(echo "$system" | cut -d ";" -f 2)" "$(echo "$system" | cut -d ";" -f 3)" "$(echo "$system" | cut -d ";" -f 4)" "$(echo "$system" | cut -d ";" -f 5)" "$(echo "$system" | cut -d ";" -f 6)" "$(echo "$system" | cut -d ";" -f 7)" "$(echo "$system" | cut -d ";" -f 8)")
    isoName="${data[0]}-${data[1]}-${data[2]}.iso"
    url="${data[3]}"
    sizeDisc="${data[4]}G"
    sizeRam="${data[5]}"
    extra="${data[6]}"
    echo "[+] Downloading $isoName"
    mkdir -p $vmsDir/${data[0]}-${data[1]}-${data[2]}
    if [ -f "$vmsDir/${data[0]}-${data[1]}-${data[2]}/$isoName" ]; then
      echo "    $vmsDir/${data[0]}-${data[1]}-${data[2]}/$isoName exists"
    else
      wget --no-check-certificate -q $url -O $vmsDir/${data[0]}-${data[1]}-${data[2]}/$isoName
      echo "    Create img [$sizeDisc] $vmsDir/${data[0]}-${data[1]}-${data[2]}/${data[0]}-${data[1]}-${data[2]}.qcow2"
      qemu-img create -q -f qcow2 "$vmsDir/${data[0]}-${data[1]}-${data[2]}/${data[0]}-${data[1]}-${data[2]}.qcow2" $sizeDisc
      echo "    Create install script"
      echo "#!/bin/bash" > "$vmsDir/${data[0]}-${data[1]}-${data[2]}/install.sh"
      echo "qemu-system-${data[2]} $extra -m $sizeRam -cdrom $vmsDir/${data[0]}-${data[1]}-${data[2]}/$isoName -hda $vmsDir/${data[0]}-${data[1]}-${data[2]}/${data[0]}-${data[1]}-${data[2]}.qcow2" >> "$vmsDir/${data[0]}-${data[1]}-${data[2]}/install.sh"
      echo "    Create start script"
      echo "#!/bin/bash" > "$vmsDir/${data[0]}-${data[1]}-${data[2]}/start.sh"
      echo "qemu-system-${data[2]} $extra -m $sizeRam -hda $vmsDir/${data[0]}-${data[1]}-${data[2]}/${data[0]}-${data[1]}-${data[2]}.qcow2" > "$vmsDir/${data[0]}-${data[1]}-${data[2]}/start.sh"
    fi
  done < $vmsDir/.systems.lst
}

function showVms() {
  echo -en "\nVMs List:\n\n"
  cd $vmsDir
  ls -1
  echo -en "\nVirtual machines dir: $vmsDir\n\nChange to $vmsDir directory. Happy hacking !\n\n"
}

main