package whois

import "strings"

func buildResultMeta(r Result, source, server string) ResultMeta {
	if strings.TrimSpace(source) == "" {
		source = "whois"
	}
	meta := ResultMeta{
		Source: strings.TrimSpace(source),
		Server: strings.TrimSpace(server),
		RawLen: len(r.rawData),
	}
	meta.ReasonCode, meta.Reason = classifyResultReason(r)
	meta.QualityScore = scoreResultQuality(r, meta.ReasonCode)
	return meta
}

func classifyResultReason(r Result) (ErrorCode, string) {
	raw := strings.TrimSpace(r.rawData)
	if raw == "" {
		return ErrorCodeEmptyResponse, "empty response"
	}
	if !r.exists {
		if rawHasAccessDenied(raw) {
			return ErrorCodeAccessDenied, "access denied"
		}
		if rawHasNotFound(raw) {
			return ErrorCodeNotFound, "not found"
		}
		return ErrorCodeNotFound, "not found"
	}

	score := scoreResultQuality(r, ErrorCodeOK)
	if score < 60 {
		return ErrorCodeParseWeak, "weak parse"
	}
	return ErrorCodeOK, "ok"
}

func scoreResultQuality(r Result, code ErrorCode) int {
	switch code {
	case ErrorCodeEmptyResponse:
		return 0
	case ErrorCodeAccessDenied:
		return 10
	case ErrorCodeNotFound:
		return 20
	}

	score := 40
	if strings.TrimSpace(r.domain) != "" {
		score += 15
	}
	if strings.TrimSpace(r.registrar) != "" {
		score += 10
	}
	if len(r.nsServers) > 0 {
		score += 10
	}
	if len(r.statusRaw) > 0 {
		score += 5
	}
	if r.hasRegisterDate {
		score += 7
	}
	if r.hasExpireDate {
		score += 7
	}
	if r.hasUpdateDate {
		score += 6
	}
	if score > 100 {
		score = 100
	}
	if score < 0 {
		score = 0
	}
	return score
}