# SPDX-License-Identifier: CC0-1.0

{ stdenv, nixpkgs, dhallApps, packages, nova-image }:

nixpkgs.writeScriptBin "nova-iso" (with nixpkgs.buildPackages;
  let inherit (stdenv) cc;

  in ''
    #!${runtimeShell}
    set -eu

    CC="${cc}/bin/${cc.targetPrefix}cc"
    LD="${buildPackages.binutils}/bin/${buildPackages.binutils.targetPrefix}ld"
    SYSLINUX="${syslinux}/share/syslinux"

    TMPDIR="$(${coreutils}/bin/mktemp -p /tmp -d  nova-iso.XXXX)"
    mkdir -p "$TMPDIR/boot/syslinux"
    trap "rm -rf $TMPDIR" err exit

    ${nova-image.program} $@
    mv image.elf "$TMPDIR/boot"

    pushd "$TMPDIR"

    # build ISO image
    cp ${packages.NOVA}/hypervisor* boot/hypervisor
    cp ${./isolinux.cfg} boot/syslinux/isolinux.cfg
    cp \
    	$SYSLINUX/isolinux.bin \
    	$SYSLINUX/ldlinux.c32 \
    	$SYSLINUX/libcom32.c32 \
    	$SYSLINUX/mboot.c32 \
    	boot/syslinux
    chmod +w boot/syslinux/isolinux.bin

    ISO_FILE="''${DIRSTACK[1]}/nova.iso"

    ${cdrkit}/bin/mkisofs -o "$ISO_FILE" \
    	-b syslinux/isolinux.bin -c syslinux/boot.cat \
    	-no-emul-boot -boot-load-size 4 -boot-info-table \
    	-iso-level 2 \
    	boot

    popd

    # build test script
    QEMU_SCRIPT=boot-qemu.sh
    cat > "$QEMU_SCRIPT" << EOF
    #!/bin/sh
    qemu-system-x86_64 -cdrom nova.iso -machine q35 -serial mon:stdio \$@
    EOF

    chmod +x "$QEMU_SCRIPT"
  '')