# This bash library contains the main function that creates a node VM.

# Configure VirtualBox network interfaces
function _vbox_configure_ifs {
    # Iterate over all NET_IF_? variables
    local NET_IFS=( "${!NET_IF_@}" )
    local NET_IF=""
    for NET_IF in "${NET_IFS[@]}"; do
        local IF_NUM=${NET_IF##*_}
        if [ "${!NET_IF}" = "nat" ]; then
            echo "interface $IF_NUM: NAT"
            vm_nic_nat "$NODE_NAME" "$IF_NUM"
        else
            # Host-only network: NET_IF is net name (e.g. API_NET)
            # Use corresponding VirtualBox interface (e.g. API_NET_IF)
            local HOST_IF="${!NET_IF}_IF"
            echo "interface $IF_NUM: host-only ${!HOST_IF}"
            vm_nic_hostonly "$NODE_NAME" "$IF_NUM" "${!HOST_IF}"
        fi
    done
}

# Boot node VM; wait until autostart files are processed and VM is shut down
function _vbox_boot_with_autostart {
    local VM=$1
    local SSH_PORT=$2

    vbox_boot "$VM"

    # Wait for ssh connection and execute scripts in autostart directory
    # (for wbatch, osbashauto does the processing instead)
    ${WBATCH:+:} ssh_process_autostart "$SSH_PORT" &

    wait_for_autofiles
    echo >&2 "VM \"$VM\": autostart files executed"
    vm_wait_for_shutdown "$VM"
}

function vm_build_node {
    # XXX Run this function in sub-shell to protect our caller's environment
    #     (which might be _our_ enviroment if we get called again)
    (

    NODE_NAME=$1
    source "$CONFIG_DIR/config.$NODE_NAME"

    ${WBATCH:-:} wbatch_begin_node "$NODE_NAME"

    vm_create "$NODE_NAME"

    # Set VM_MEM in config/config.NODE_NAME to override
    vm_mem "$NODE_NAME" "${VM_MEM:-512}"

    _vbox_configure_ifs

    # Port forwarding
    if [ -n "${VM_SSH_PORT:-}" ]; then
        vm_port "$NODE_NAME" ssh "$VM_SSH_PORT" 22
    fi
    if [ -n "${VM_WWW_PORT:-}" ]; then
        vm_port "$NODE_NAME" http "$VM_WWW_PORT" 80
    fi

    vm_add_share "$NODE_NAME" "$SHARE_DIR" "$SHARE_NAME"
    vm_attach_disk_multi "$NODE_NAME" "$BASE_DISK"
    #- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    autostart_reset
    # Rename to pass the node name to the script
    autostart_and_rename osbash init_xxx_node.sh "init_${NODE_NAME}_node.sh"
    autostart_from_config scripts.nodeinit_osbash

    _vbox_boot_with_autostart "$NODE_NAME" "$VM_SSH_PORT"
    vm_snapshot "$NODE_NAME" "network_configured"
    #- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    autostart_reset
    autostart_from_config "scripts.$NODE_NAME"
    autostart scripts shutdown.sh
    _vbox_boot_with_autostart "$NODE_NAME" "$VM_SSH_PORT"
    vm_snapshot "$NODE_NAME" "pre-installed"
    #- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    ${WBATCH:-:} wbatch_end_file

    )
}

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