#!/bin/sh
set -e
cd "$(dirname "$(realpath "$0")")"

alias log='echo [build.sh]'


VBOX_VERSION=$(VBoxManage --version | cut -d 'r' -f 1)
ETH_DEV=$(route | grep '^default' | grep -o '[^ ]*$')
VM_NAME="epitls_build"


log "updating environment"
    sudo rm -fr tmp
    mkdir -p tmp output
    if ! [ -f output/guest_add.iso ]
    then wget -O output/guest_add.iso "https://download.virtualbox.org/virtualbox/$VBOX_VERSION/VBoxGuestAdditions_$VBOX_VERSION.iso"
    fi


AURS="zerofree"


log "creating package db"
    rm -fr /tmp/custom-db
    mkdir  /tmp/custom-db
    for aur in $AURS
    do
        git clone "https://aur.archlinux.org/$aur.git" "/tmp/custom-db/$aur"
        ( cd "/tmp/custom-db/$aur" && makepkg; )
        mv /tmp/custom-db/$aur/$aur-* /tmp/custom-db/
        repo-add /tmp/custom-db/custom.db.tar.gz /tmp/custom-db/$aur-*.pkg.tar.zst
    done


log "creating iso"
    sudo mkarchiso -v -w $PWD/tmp/wdir -r -o $PWD/output $PWD/profile
    rm -f                     output/install.iso
    mv output/archlinux-*.iso output/install.iso


if VBoxManage showvminfo $VM_NAME 2> /dev/null
then log "disposing old VM"
    VBoxManage unregistervm $VM_NAME --delete-all
fi


log "creating VM"
    VBoxManage createvm --name=$VM_NAME --ostype=ArchLinux_64 --register
    VBoxManage modifyvm        $VM_NAME --cpus=4 --memory=4096 --vram=12 --firmware=efi
    VBoxManage modifyvm        $VM_NAME --nic1=bridged --bridgeadapter1=$ETH_DEV
    VBoxManage createhd --filename=$PWD/tmp/drive.vdi --size=$((1024 * 20)) --variant=Standard
    VBoxManage storagectl      $VM_NAME       --name=SATA --add sata --bootable on
    VBoxManage storageattach   $VM_NAME --storagectl=SATA --port=0 --device=0 --type=hdd      --medium=$PWD/tmp/drive.vdi
    VBoxManage storagectl      $VM_NAME       --name=IDE  --add ide
    VBoxManage storageattach   $VM_NAME --storagectl=IDE  --port=0 --device=0 --type=dvddrive --medium=$PWD/output/install.iso
    VBoxManage storageattach   $VM_NAME --storagectl=IDE  --port=1 --device=1 --type=dvddrive --medium=$PWD/output/guest_add.iso


log "running VM with iso"
    virtualboxvm --startvm $VM_NAME --dvd $PWD/output/install.iso


log "exporting VM"
    VBoxManage storageattach $VM_NAME --storagectl=IDE  --port=0 --device=0 --medium=none # removes iso after run
    VBoxManage storageattach $VM_NAME --storagectl=IDE  --port=1 --device=1 --medium=none # removes iso after run
    VBoxManage modifyhd $PWD/tmp/drive.vdi -compact
    rm -f                               $PWD/output/epitls.ova
    VBoxManage export $VM_NAME --output=$PWD/output/epitls.ova --vsys=0 --vmname=epitls --description="VM pour le développement à EPITA Toulouse."


log "disposing VM"
    VBoxManage unregistervm $VM_NAME --delete-all