# ------------------------------------------------------------------------------
# Create VBox VM
# This file is part of the init.sh project
# Copyright (c) 2019-2021 Geoffray Levasseur <fatalerrors@geoffray-levasseur.org>
# ------------------------------------------------------------------------------
# This file is distributed under 3-clause BSD license.
# The complete license agreement can be obtained at:
# https://opensource.org/licenses/BSD-3-Clause
# ------------------------------------------------------------------------------
# Variable:
#   To be defined
# ------------------------------------------------------------------------------

export VER_create_vm="0.0.1"
export DEP_create_vm="upgrade_dist install_pkg"

create_vm()
{
    if [[ $WITH_VM != "yes" ]]; then
        prnt I "Cette machine n'est pas configurée pour la virtualisation, rien à faire." 
        return 0
    fi
    
    pkginst virtualbox

    # Create welcoming dirs
    mkdir -pv $VM_ROOT/{.config/VirtualBox,vms/$VM_NAME}

    # Create symbolic links (because of rights only main user can start it)
    ln -sv $VM_ROOT/.config/VirtualBox /root/.config/VirtualBox
    ln -sv $VM_ROOT/.config/VirtualBox /home/$MAINUSER/.config/VirtualBox

    local accel_2d=off
    case $VM_OS in
        Windows*)
            accel_2d=on
            ;;
    esac

    # Create emty VM
    local targetdir=$VM_ROOT/vms/$VM_NAME
    vboxmanage createvm --ostype $VM_OS --basefolder $targetdir \
        --name $VM_NAME --register

    # Give main caracteristics
    vboxmanage modifyvm $VM_NAME \
        --cpus $VM_CPU --memory $VM_MEM --vram  $VM_VID_MEM \
        --boot1 $VM_BOOT1 --VM_BOOT2 $VM_BOOT2 --boot3 $VM_BOOT3 \
        --nic1 bridged --bridgeadapter1 $VM_IF_BRIDGE \
        --accelerate2dvideo $accel_2d \
        --clipboard bidirectional --draganddrop disabled

    # Add a SATA controler
    vboxmanage storagectl $VM_NAME \
        --name sata0 --add sata --controller IntelAHCI --bootable on \
        --hostiocache on --portcount 6

    # Create a virtual HDD
    vboxmanage createmedium \
        --size $VM_DISK_SIZE --variant Fixed --filename $targetdir/$VM_NAME.vdi

    # Connect the created HDD to the VM
    vboxmanage storageattach $VM_NAME \
        --storagectl sata0 --port 1 --device 0 --type hdd \
        --medium $targetdir/$VM_NAME.vdi

    unset targetdir accel_2d

    # Add empty DVD
    vboxmanage storageattach $VM_NAME --storagectl sata0 --port 2 --device 0 \
        --medium emptydrive

    # Add shares
    local share= i=0
    for share in $VM_SHARES_NAME; do
        (( i+=1 ))

        local j=0 hostpath=""
        for path in $VM_SHARES_PATH; do
            (( j+=1 ))
            if [[ $i -eq $j ]]; then
                hostpath=$path
            fi
        done
        unset j

        vboxmanage sharedfolder add $VM_NAME \
            --name ${VM_SHARES_NAME,,} --hostpath $hostpath
    done
    unset share i
}

precheck_create_vm()
{
    if [[ $WITH_VM == "yes" ]]; then
        if [[ -z $VM_NAME ]]; then
            prnt E "La machine virtuelle à créer doit avoir un nom."
            die 181
        fi
        if [[ -z VM_CPU || -z VM_MEM || -z VM_OS || -z VM_ROOT || \
            -z VM_BOOT1 || -z VM_BOOT2 || -z VM_BOOT3 || -z VM_VID_MEM ||
            -z VM_IF_BRIDGE || -z VM_DISK_SIZE ]]; then
            prnt E "Une variable de description de la machine virtuelle n'est pas déclarée !"
            die 181
        else
            prnt I "La machine virtuelle \"$VM_NAME\" sera crée dans $VM_ROOT..."
        fi

        local share= i=0 j=0
        for share in $VM_SHARES_NAME; do
            (( i+=1 ))
        done
        for share in $VM_SHARES_PATH; do
            (( j+=1 ))
        done
        unset share
        if [[ $i -eq $j ]]; then
            prnt I "La machine virtuelle aura accès à $i répertoires de l'hôte."
        else
            prnt E "Le nombre de partage et de chemin à partager diffère !"
            die 182
        fi
    else
        prnt I "Aucune machine virtuelle à installer."
    fi
}

export -f create_vm
export -f precheck_create_vm

# EOF