package rosa

import (
	"slices"

	"hakurei.app/internal/pkg"
)

// newKernel is a helper for interacting with Kbuild.
func (t Toolchain) newKernel(
	exclusive bool,
	patches [][2]string,
	script string,
	extra ...pkg.Artifact,
) pkg.Artifact {
	const (
		version  = "6.18.5"
		checksum = "-V1e1WWl7HuePkmm84sSKF7nLuHfUs494uNMzMqXEyxcNE_PUE0FICL0oGWn44mM"
	)
	return t.New("kernel-"+version, exclusive, slices.Concat([]pkg.Artifact{
		t.Load(Make),
	}, extra), nil, nil, `
export LLVM=1
export HOSTLDFLAGS="${LDFLAGS}"
cd /usr/src/linux
`+script, pkg.Path(AbsUsrSrc.Append("linux"), true, t.NewPatchedSource(
		"kernel", version, pkg.NewHTTPGetTar(
			nil,
			"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/"+
				"snapshot/linux-"+version+".tar.gz",
			mustDecode(checksum),
			pkg.TarGzip,
		), false, patches...,
	)))
}

func (t Toolchain) newKernelHeaders() pkg.Artifact {
	return t.newKernel(false, nil, `
make "-j$(nproc)" \
	INSTALL_HDR_PATH=/work/system \
	headers_install
`, t.Load(Rsync))
}
func init() { artifactsF[KernelHeaders] = Toolchain.newKernelHeaders }