package app

import (
	"fmt"
	"sort"
	"strings"
)

func logWildcardSmartDNSTrace(mode DNSMode, source string, pairs [][2]string, wildcardIPCount int) {
	lowMode := strings.ToLower(strings.TrimSpace(string(mode.Mode)))
	if lowMode != string(DNSModeHybridWildcard) && lowMode != string(DNSModeSmartDNS) {
		return
	}

	hostMap := wildcardHostIPMap(pairs)
	hosts := make([]string, 0, len(hostMap))
	for host := range hostMap {
		hosts = append(hosts, host)
	}
	sort.Strings(hosts)

	const maxHostsLog = 200
	omitted := 0
	if len(hosts) > maxHostsLog {
		omitted = len(hosts) - maxHostsLog
	}

	appendTraceLineTo(
		smartdnsLogPath,
		"smartdns",
		fmt.Sprintf(
			"wildcard sync: mode=%s source=%s domains=%d ips=%d logged=%d omitted=%d map=%s",
			mode.Mode, source, len(hosts), wildcardIPCount, len(hosts)-omitted, omitted, lastIPsMapDyn,
		),
	)

	for i, host := range hosts {
		if i >= maxHostsLog {
			appendTraceLineTo(
				smartdnsLogPath,
				"smartdns",
				fmt.Sprintf("wildcard sync: trace truncated, %d domains not shown (see %s)", omitted, lastIPsMapDyn),
			)
			return
		}
		appendTraceLineTo(
			smartdnsLogPath,
			"smartdns",
			fmt.Sprintf("wildcard add: %s -> %s", host, strings.Join(hostMap[host], ", ")),
		)
	}
}