// "sync" sub-command: collect information from remote host

// SPDX-License-Identifier: GPL-3.0-or-later
// Copyright (C) 2021-2024  Simon Ruderich

package main

import (
	"fmt"
	"regexp"
	"strings"

	"ruderich.org/simon/safcm"
	"ruderich.org/simon/safcm/cmd/safcm/config"
	"ruderich.org/simon/safcm/rpc"
)

func (s *Sync) hostInfo(conn *rpc.Conn) ([]string, error) {
	resp, err := s.loop.HostInfoMsg(s, conn, safcm.MsgInfoReq{
		LogLevel:     s.config.LogLevel,
		DetectGroups: s.config.DetectGroups,
	})
	if err != nil {
		return nil, err
	}
	if resp.Error != "" {
		return nil, fmt.Errorf("%s", resp.Error)
	}
	return hostInfoRespToGroups(resp), nil
}

// Keep in sync with cmd/safcm/config/groups.go:groupNameRegexp
var infoGroupDetectedRegexp = regexp.MustCompile(`[^a-z0-9_-]+`)

func hostInfoRespToGroups(resp safcm.MsgInfoResp) []string {
	groups := []string{
		hostInfoDetectedGroupName(resp.Goos),
		hostInfoDetectedGroupName(resp.Goarch),
	}
	for _, x := range resp.Output {
		groups = append(groups, hostInfoDetectedGroupName(x))
	}
	return groups
}

func hostInfoDetectedGroupName(x string) string {
	x = strings.TrimSpace(x)
	x = strings.ToLower(x)
	x = infoGroupDetectedRegexp.ReplaceAllString(x, "_")
	x = config.GroupDetectedPrefix + "_" + x
	return x
}