package rosa

import (
	"runtime"
	"sync"

	"hakurei.app/internal/pkg"
)

func (t Toolchain) newStage0() pkg.Artifact {
	musl, compilerRT, runtimes, clang := t.NewLLVM()
	return t.New("rosa-stage0", 0, []pkg.Artifact{
		musl,
		compilerRT,
		runtimes,
		clang,

		t.Load(Bzip2),

		t.Load(Patch),
		t.Load(Make),
		t.Load(CMake),
		t.Load(Ninja),

		t.Load(Libffi),
		t.Load(Python),
		t.Load(Perl),
		t.Load(Diffutils),
		t.Load(Bash),
		t.Load(Gawk),
		t.Load(Coreutils),
		t.Load(Findutils),

		t.Load(KernelHeaders),
	}, nil, nil, `
umask 377
tar \
	-vjc \
	-C / \
	-f /work/stage0-`+triplet()+`.tar.bz2 \
	system bin usr/bin/env
`)
}
func init() { artifactsF[Stage0] = Toolchain.newStage0 }

var (
	// stage0 stores the tarball unpack artifact.
	stage0 pkg.Artifact
	// stage0Once is for lazy initialisation of stage0.
	stage0Once sync.Once
)

// NewStage0 returns a stage0 distribution created from curing [Stage0].
func NewStage0() pkg.Artifact {
	stage0Once.Do(func() {
		var seed string
		switch runtime.GOARCH {
		case "amd64":
			seed = "tqM1Li15BJ-uFG8zU-XjgFxoN_kuzh1VxrSDVUVa0vGmo-NeWapSftH739sY8EAg"
		case "arm64":
			seed = "CJj3ZSnRyLmFHlWIQtTPQD9oikOZY4cD_mI3v_-LIYc2hhg-cq_CZFBLzQBAkFIn"

		default:
			panic("unsupported target " + runtime.GOARCH)
		}

		stage0 = pkg.NewHTTPGetTar(
			nil, "https://hakurei.app/seed/20260210/"+
				"stage0-"+triplet()+".tar.bz2",
			mustDecode(seed),
			pkg.TarBzip2,
		)
	})
	return stage0
}