package rosa

import (
	"slices"

	"hakurei.app/internal/pkg"
)

// newGoBootstrap returns the Go bootstrap toolchain.
func (t Toolchain) newGoBootstrap() pkg.Artifact {
	const checksum = "8o9JL_ToiQKadCTb04nvBDkp8O1xiWOolAxVEqaTGodieNe4lOFEjlOxN3bwwe23"
	return t.New("go1.4-bootstrap", nil, nil, []string{
		"CGO_ENABLED=0",
	}, `
mkdir -p /var/tmp
cp -r /usr/src/go1.4-bootstrap /work
cd /work/go1.4-bootstrap/src
chmod -R +w ..
CC="${CC} ${LDFLAGS}" sh make.bash
`, pkg.Path(AbsUsrSrc.Append("go1.4-bootstrap"), false, pkg.NewHTTPGetTar(
		nil, "https://dl.google.com/go/go1.4-bootstrap-20171003.tar.gz",
		mustDecode(checksum),
		pkg.TarGzip,
	)))
}

// newGo returns a specific version of the Go toolchain.
func (t Toolchain) newGo(
	version, checksum string,
	boot pkg.Artifact,
	env ...string,
) pkg.Artifact {
	return t.New("go"+version, []pkg.Artifact{
		boot,
	}, nil, slices.Concat([]string{
		"GOCACHE=/tmp/gocache",
		"GOROOT_BOOTSTRAP=/system/go",
		"CGO_" + ldflags(false) + " -O2 -g",
	}, env), `
mkdir /work/system
cp -r /usr/src/go /work/system
cd /work/system/go/src
chmod -R +w ..
sed -i 's/bash run.bash/sh run.bash/' all.bash
sh make.bash
`, pkg.Path(AbsUsrSrc.Append("go"), false, pkg.NewHTTPGetTar(
		nil, "https://go.dev/dl/go"+version+".src.tar.gz",
		mustDecode(checksum),
		pkg.TarGzip,
	)))
}

// NewGo returns a [pkg.Artifact] containing the Go toolchain.
func (t Toolchain) NewGo() pkg.Artifact {
	go119 := t.newGo(
		"1.19",
		"9_e0aFHsIkVxWVGsp9T2RvvjOc3p4n9o9S8tkNe9Cvgzk_zI2FhRQB7ioQkeAAro",
		t.newGoBootstrap(),
		"GOROOT_BOOTSTRAP=/go1.4-bootstrap",
	)
	go121 := t.newGo(
		"1.21.13",
		"YtrDka402BOAEwywx03Vz4QlVwoBiguJHzG7PuythMCPHXS8CVMLvzmvgEbu4Tzu",
		go119,
	)
	go123 := t.newGo(
		"1.23.12",
		"wcI32bl1tkqbgcelGtGWPI4RtlEddd-PTd76Eb-k7nXA5LbE9yTNdIL9QSOOxMOs",
		go121,
	)
	go125 := t.newGo(
		"1.25.6",
		"x0z430qoDvQbbw_fftjW0rh_GSoh0VJhPzttWk_0hj9yz9AKOjuwRMupF_Q0dbt7",
		go123,
	)
	return go125
}