package inbound

import (
	"bytes"
	"context"
	"fmt"
	"math/big"
	"path/filepath"
	"regexp"
	"strings"
	"sync"
	"time"

	"github.com/gogf/gf/v2/errors/gerror"
	"github.com/gogf/gf/v2/frame/g"
	"github.com/xuri/excelize/v2"

	"git.5iot.com/iotlcm-public/iotlcm-worker-svr/internal/batch"
	"git.5iot.com/iotlcm-public/iotlcm-worker-svr/internal/consts"
	"git.5iot.com/iotlcm-public/iotlcm-worker-svr/internal/model"
	"git.5iot.com/iotlcm-public/iotlcm-worker-svr/internal/service/batchresult"
)

const (
	cascadeFailureReason = "校验通过，但本批次存在失败明细，整批未执行入库"
	maxIdentifierLength  = 32
	minICCIDLength       = 19
	minIMSILength        = 15
	minMSISDNLength      = 11
)

const (
	inboundUpstreamBatchSizeConfigKey = "batch.inbound.upstreamBatchSize"
	inboundUpstreamConcurrencyKey     = "batch.inbound.upstreamConcurrency"
	defaultInboundUpstreamBatchSize   = 1
	defaultInboundUpstreamConcurrency = 8
)

var tokenSplitter = regexp.MustCompile(`[,\t，\s]+`)

type executor struct {
	repository  Repository
	upstream    Upstream
	rateLimiter upstreamBasicInfoRateLimiter
}

func NewExecutor(repository Repository) *executor {
	return &executor{repository: repository}
}

func NewExecutorWithUpstream(repository Repository, upstream Upstream) *executor {
	return &executor{
		repository:  repository,
		upstream:    upstream,
		rateLimiter: newUpstreamBasicInfoRateLimiter(),
	}
}

func (e *executor) Execute(ctx context.Context, batchNo string) (err error) {
	totalStarted := time.Now()
	var task *Task
	defer func() {
		logInboundTotal(ctx, batchNo, task, totalStarted, err)
	}()

	stageStarted := time.Now()
	task, err = e.repository.Load(ctx, batchNo)
	if err != nil {
		logInboundStageByBatchNo(ctx, batchNo, "load_batch", stageStarted, 0, 0, 0, err)
		return gerror.Wrap(err, "load inbound batch failed")
	}
	logInboundStage(ctx, task, "load_batch", stageStarted, nil)

	stageStarted = time.Now()
	if err = e.populateRows(ctx, task); err != nil {
		logInboundStage(ctx, task, "populate_rows", stageStarted, err)
		return err
	}
	logInboundStage(ctx, task, "populate_rows", stageStarted, nil)

	stageStarted = time.Now()
	if err = e.validate(ctx, task); err != nil {
		logInboundStage(ctx, task, "validate", stageStarted, err)
		return err
	}
	logInboundStage(ctx, task, "validate", stageStarted, nil)

	if len(task.Rows) == 0 {
		stageStarted = time.Now()
		if err = e.repository.SaveValidationFailure(ctx, task); err != nil {
			logInboundStage(ctx, task, "save_validation_failure", stageStarted, err)
			return gerror.Wrap(err, "save empty inbound failure failed")
		}
		logInboundStage(ctx, task, "save_validation_failure", stageStarted, nil)
		_ = e.saveResultFile(ctx, task)
		return nil
	}
	if hasFailedRows(task.Rows) {
		applyCascadeFailure(task)
		stageStarted = time.Now()
		if err = e.repository.SaveValidationFailure(ctx, task); err != nil {
			logInboundStage(ctx, task, "save_validation_failure", stageStarted, err)
			return gerror.Wrap(err, "save inbound validation failure failed")
		}
		logInboundStage(ctx, task, "save_validation_failure", stageStarted, nil)
		_ = e.saveResultFile(ctx, task)
		return nil
	}

	stageStarted = time.Now()
	if err = e.repository.SaveSuccess(ctx, task); err != nil {
		logInboundStage(ctx, task, "save_success", stageStarted, err)
		g.Log().Errorf(ctx, "inbound batch DB write failed, batchNo:%s, err:%+v", task.Batch.BatchNo, err)
		stageStarted = time.Now()
		if saveErr := e.repository.SaveBusinessFailure(ctx, task, "数据库写入失败，本次整批未入库"); saveErr != nil {
			logInboundStage(ctx, task, "save_business_failure", stageStarted, saveErr)
			return gerror.Wrap(saveErr, "save inbound DB failure failed")
		}
		logInboundStage(ctx, task, "save_business_failure", stageStarted, nil)
		_ = e.saveResultFile(ctx, task)
		return nil
	}
	logInboundStage(ctx, task, "save_success", stageStarted, nil)
	_ = e.saveResultFile(ctx, task)
	return nil
}

func (e *executor) saveResultFile(ctx context.Context, task *Task) error {
	stageStarted := time.Now()
	if err := e.repository.SaveResultFile(ctx, task, resultRequest(task)); err != nil {
		g.Log().Errorf(ctx, "save inbound result file status failed, batchNo:%s, err:%+v", task.Batch.BatchNo, err)
		logInboundStage(ctx, task, "result_file", stageStarted, err)
		return err
	}
	logInboundStage(ctx, task, "result_file", stageStarted, nil)
	return nil
}

func logInboundStage(ctx context.Context, task *Task, stage string, started time.Time, err error) {
	batchNo := ""
	rows, valid, failed := 0, 0, 0
	if task != nil {
		batchNo = task.Batch.BatchNo
		rows = len(task.Rows)
		valid = countValidRows(task.Rows)
		failed = countFailedRows(task.Rows)
	}
	logInboundStageByBatchNo(ctx, batchNo, stage, started, rows, valid, failed, err)
}

func logInboundStageByBatchNo(ctx context.Context, batchNo, stage string, started time.Time, rows, valid, failed int, err error) {
	durationMs := time.Since(started).Milliseconds()
	if err != nil {
		g.Log().Warningf(ctx, "inbound batch stage failed, batchNo:%s, stage:%s, rows:%d, valid:%d, failed:%d, durationMs:%d, err:%+v",
			batchNo, stage, rows, valid, failed, durationMs, err)
		return
	}
	g.Log().Infof(ctx, "inbound batch stage completed, batchNo:%s, stage:%s, rows:%d, valid:%d, failed:%d, durationMs:%d",
		batchNo, stage, rows, valid, failed, durationMs)
}

func logInboundTotal(ctx context.Context, batchNo string, task *Task, started time.Time, err error) {
	rows, valid, failed := 0, 0, 0
	outcome := "success"
	if task != nil {
		if task.Batch.BatchNo != "" {
			batchNo = task.Batch.BatchNo
		}
		rows = len(task.Rows)
		valid = countValidRows(task.Rows)
		failed = countFailedRows(task.Rows)
		if task.FailureReason != "" || failed > 0 {
			outcome = "business_failed"
		}
	}
	if err != nil {
		outcome = "error"
	}
	duration := time.Since(started)
	rowsPerSecond := 0.0
	if duration > 0 && rows > 0 {
		rowsPerSecond = float64(rows) / duration.Seconds()
	}
	if err != nil {
		g.Log().Warningf(ctx, "inbound batch finished, batchNo:%s, outcome:%s, rows:%d, valid:%d, failed:%d, durationMs:%d, rowsPerSecond:%.2f, err:%+v",
			batchNo, outcome, rows, valid, failed, duration.Milliseconds(), rowsPerSecond, err)
		return
	}
	g.Log().Infof(ctx, "inbound batch finished, batchNo:%s, outcome:%s, rows:%d, valid:%d, failed:%d, durationMs:%d, rowsPerSecond:%.2f",
		batchNo, outcome, rows, valid, failed, duration.Milliseconds(), rowsPerSecond)
}

func (e *executor) populateRows(ctx context.Context, task *Task) error {
	switch task.Batch.SourceType {
	case consts.BatchSourceTypeFile:
		return e.populateExcelRows(ctx, task)
	case consts.BatchSourceTypeBatchInput:
		return e.populateInputRows(ctx, task)
	case consts.BatchSourceTypeRange:
		return e.populateRangeRows(task)
	default:
		return e.populateRowsBySourceShape(ctx, task)
	}
}

func (e *executor) populateRowsBySourceShape(ctx context.Context, task *Task) error {
	switch {
	case task.Source.ImportFileOssID > 0:
		return e.populateExcelRows(ctx, task)
	case task.Source.InputText != "" || task.Source.InputFileOssID > 0:
		return e.populateInputRows(ctx, task)
	case task.Source.Range.StartICCID != "" || task.Source.Range.EndICCID != "":
		return e.populateRangeRows(task)
	default:
		return gerror.Newf("unsupported inbound source type %d", task.Batch.SourceType)
	}
}

func (e *executor) populateExcelRows(ctx context.Context, task *Task) error {
	if task.Source.ImportFileOssID <= 0 {
		return gerror.New("inbound Excel source importFileOssId is empty")
	}
	content, name, err := e.repository.ReadOssFile(ctx, task.Source.ImportFileOssID)
	if err != nil {
		return batch.Retryable(gerror.Wrap(err, "read inbound Excel source failed"))
	}
	workbook, err := excelize.OpenReader(bytes.NewReader(content))
	if err != nil {
		return gerror.Wrapf(err, "open inbound Excel source %s failed", name)
	}
	defer func() { _ = workbook.Close() }()
	sheets := workbook.GetSheetList()
	if len(sheets) == 0 {
		return gerror.New("inbound Excel source has no sheets")
	}
	lines, err := workbook.GetRows(sheets[0])
	if err != nil {
		return gerror.Wrap(err, "read inbound Excel rows failed")
	}
	if len(lines) == 0 || !hasInboundIdentifierHeader(headerIndex(lines[0])) {
		return gerror.New("入库文件表头无效：缺少 ICCID、MSISDN 或 IMSI 列")
	}
	task.Rows = parseTableRows(lines)
	return nil
}

func (e *executor) populateInputRows(ctx context.Context, task *Task) error {
	text := task.Source.InputText
	if strings.TrimSpace(text) == "" && task.Source.InputFileOssID > 0 {
		content, name, err := e.repository.ReadOssFile(ctx, task.Source.InputFileOssID)
		if err != nil {
			return batch.Retryable(gerror.Wrap(err, "read inbound input source failed"))
		}
		if strings.ToLower(filepath.Ext(name)) != ".txt" {
			g.Log().Warningf(ctx, "inbound input source file is not .txt, batchNo:%s, file:%s", task.Batch.BatchNo, name)
		}
		text = string(content)
	}
	task.Rows = parseInputText(text)
	return nil
}

func (e *executor) populateRangeRows(task *Task) error {
	rows, err := expandRange(task.Source.Range)
	if err != nil {
		return err
	}
	task.Rows = rows
	return nil
}

func (e *executor) validate(ctx context.Context, task *Task) error {
	if len(task.Rows) == 0 {
		task.FailureReason = "未解析到有效入库数据"
		return nil
	}
	useOptionFallback := shouldUseInboundOptionFallback(task)
	if !useOptionFallback {
		task.Options = Options{ValidateUpstreamBasicInfo: task.Options.ValidateUpstreamBasicInfo}
	}
	for _, row := range task.Rows {
		normalizeRow(row, task.Options, useOptionFallback)
		validateRow(row, task.Source.Range.RangeType)
	}
	syncInboundOptionsFromRows(task)
	markSameBatchDuplicates(task.Rows)
	if hasFailedRows(task.Rows) {
		markIncompleteRows(task.Rows)
		task.ValidCount = countValidRows(task.Rows)
		return nil
	}
	if err := e.markStockDuplicates(ctx, task); err != nil {
		return err
	}
	if hasFailedRows(task.Rows) {
		markIncompleteRows(task.Rows)
		task.ValidCount = countValidRows(task.Rows)
		return nil
	}
	task.Options.ValidateUpstreamBasicInfo = normalizeUpstreamBasicInfoValidationOption(task.Options.ValidateUpstreamBasicInfo)
	if e.upstream != nil && task.Options.ValidateUpstreamBasicInfo == "1" {
		if err := e.validateUpstreamBasicInfo(ctx, task); err != nil {
			return err
		}
	}
	markIncompleteRows(task.Rows)
	markSameBatchDuplicates(task.Rows)
	if err := e.markStockDuplicates(ctx, task); err != nil {
		return err
	}
	task.ValidCount = countValidRows(task.Rows)
	return nil
}

func (e *executor) markStockDuplicates(ctx context.Context, task *Task) error {
	iccids, msisdns, imsis := rowKeys(task.Rows)
	stocks, err := e.repository.FindExistingStocks(ctx, task.Batch.TenantID, iccids, msisdns, imsis)
	if err != nil {
		return gerror.Wrap(err, "query inbound stock duplicates failed")
	}
	markStockDuplicates(task.Rows, stocks)
	return nil
}

func parseInputText(text string) []*Row {
	lines := strings.Split(strings.ReplaceAll(text, "\r\n", "\n"), "\n")
	rows := make([]*Row, 0, len(lines))
	for index, line := range lines {
		fields := splitFields(line)
		if len(fields) == 0 {
			continue
		}
		if len(fields) == 1 {
			rows = append(rows, rowFromSingleIdentifier(index+1, fields[0]))
			continue
		}
		rows = append(rows, rowFromFields(index+1, fields, nil))
	}
	return rows
}

func parseTableRows(lines [][]string) []*Row {
	if len(lines) == 0 {
		return nil
	}
	header := headerIndex(lines[0])
	start := 0
	if len(header) > 0 {
		start = 1
	}
	rows := make([]*Row, 0, len(lines)-start)
	for index := start; index < len(lines); index++ {
		fields := trimRow(lines[index])
		if rowEmpty(fields) {
			continue
		}
		if len(header) > 0 {
			rows = append(rows, rowFromHeader(index+1, fields, header))
			continue
		}
		rows = append(rows, rowFromFields(index+1, fields, nil))
	}
	return rows
}

func hasInboundIdentifierHeader(header map[string]int) bool {
	for _, key := range []string{"iccid", "msisdn", "imsi"} {
		if _, ok := header[key]; ok {
			return true
		}
	}
	return false
}

func rowFromHeader(rowNo int, fields []string, header map[string]int) *Row {
	raw := make(map[string]string, len(header))
	for key, index := range header {
		if index >= 0 && index < len(fields) {
			raw[key] = fields[index]
		}
	}
	return &Row{
		RowNo:  rowNo,
		ICCID:  valueForHeader(fields, header, "iccid"),
		MSISDN: valueForHeader(fields, header, "msisdn"),
		IMSI:   valueForHeader(fields, header, "imsi"),
		IMEI:   valueForHeader(fields, header, "imei"),
		ChanKey: firstNonEmpty(
			valueForHeader(fields, header, "chanKey"),
			valueForHeader(fields, header, "chan_key"),
		),
		CardType:                     valueForHeader(fields, header, "cardType"),
		UpPkgCode:                    valueForHeader(fields, header, "upPkgCode"),
		SuppliersCode:                valueForHeader(fields, header, "suppliersCode"),
		UpstreamActivationTime:       valueForHeader(fields, header, "upstreamActivationTime"),
		InsertToPlugEnabled:          valueForHeader(fields, header, "insertToPlugEnabled"),
		CarrierTrafficCutoffEnabled:  valueForHeader(fields, header, "carrierTrafficCutoffEnabled"),
		AgreementExpiryDate:          valueForHeader(fields, header, "agreementExpiryDate"),
		HasTestPeriod:                valueForHeader(fields, header, "hasTestPeriod"),
		TestPeriodDays:               valueForHeader(fields, header, "testPeriodDays"),
		TestPeriodLatestExpiryDate:   valueForHeader(fields, header, "testPeriodLatestExpiryDate"),
		HasSilentPeriod:              valueForHeader(fields, header, "hasSilentPeriod"),
		SilentPeriodDays:             valueForHeader(fields, header, "silentPeriodDays"),
		SilentPeriodLatestExpiryDate: valueForHeader(fields, header, "silentPeriodLatestExpiryDate"),
		Raw:                          raw,
	}
}

func rowFromFields(rowNo int, fields []string, raw map[string]string) *Row {
	return &Row{
		RowNo:     rowNo,
		InputCode: valueAt(fields, 0),
		ICCID:     valueAt(fields, 0),
		MSISDN:    valueAt(fields, 1),
		IMSI:      valueAt(fields, 2),
		IMEI:      valueAt(fields, 3),
		ChanKey:   valueAt(fields, 4),
		Raw:       raw,
	}
}

func rowFromSingleIdentifier(rowNo int, code string) *Row {
	code = strings.TrimSpace(code)
	row := &Row{
		RowNo:     rowNo,
		InputCode: code,
		Raw:       map[string]string{"inputCode": code},
	}
	switch inferIdentifierType(code) {
	case "iccid":
		row.ICCID = code
	case "imsi":
		row.IMSI = code
	case "msisdn":
		row.MSISDN = code
	}
	return row
}

func inferIdentifierType(code string) string {
	code = strings.TrimSpace(code)
	switch {
	case code == "":
		return ""
	case len(code) >= minICCIDLength && len(code) <= maxIdentifierLength && allAlphaNumeric(code):
		return "iccid"
	case len(code) >= minIMSILength && len(code) < minICCIDLength && allDigits(code):
		return "imsi"
	case len(code) >= minMSISDNLength && len(code) < minIMSILength && allDigits(code):
		return "msisdn"
	default:
		return ""
	}
}

func headerIndex(fields []string) map[string]int {
	indexes := make(map[string]int)
	for index, field := range fields {
		key := normalizeHeader(field)
		switch key {
		case "iccid", "msisdn", "imsi", "imei", "chankey", "chan_key",
			"cardType", "upPkgCode", "suppliersCode", "upstreamActivationTime",
			"insertToPlugEnabled", "carrierTrafficCutoffEnabled", "agreementExpiryDate",
			"hasTestPeriod", "testPeriodDays", "testPeriodLatestExpiryDate",
			"hasSilentPeriod", "silentPeriodDays", "silentPeriodLatestExpiryDate":
			if key == "chankey" {
				key = "chanKey"
			}
			indexes[key] = index
		}
	}
	if !hasInboundIdentifierHeader(indexes) {
		return nil
	}
	return indexes
}

func normalizeHeader(value string) string {
	value = strings.TrimSpace(value)
	value = strings.Trim(value, "\ufeff")
	value = strings.TrimRight(value, "*＊")
	value = strings.TrimSpace(value)
	value = strings.ToLower(value)
	value = strings.NewReplacer(
		" ", "",
		"_", "",
		"-", "",
		"/", "",
		"（", "",
		"）", "",
		"(", "",
		")", "",
		":", "",
		"：", "",
	).Replace(value)
	switch value {
	case "iccid", "iccid号", "集成电路卡识别码":
		return "iccid"
	case "msisdn", "卡号", "手机号", "接入号", "号码":
		return "msisdn"
	case "imsi", "国际移动用户识别码":
		return "imsi"
	case "imei", "国际移动设备识别码":
		return "imei"
	case "chankey", "通道", "通道编号", "通道编码", "通道标识":
		return "chankey"
	case "cardtype", "卡类型", "卡片类型":
		return "cardType"
	case "uppkgcode", "上游套餐", "上游套餐编码", "上游套餐编号":
		return "upPkgCode"
	case "supplierscode", "suppliercode", "供应商", "供应商编码", "供应商编号":
		return "suppliersCode"
	case "upstreamactivationtime", "上游激活时间", "上游给出激活时间", "上游开户时间":
		return "upstreamActivationTime"
	case "inserttoplugenabled", "是否贴片转插拔", "贴片转插拔":
		return "insertToPlugEnabled"
	case "carriertrafficcutoffenabled", "是否运营商达量断网", "运营商达量断网":
		return "carrierTrafficCutoffEnabled"
	case "agreementexpirydate", "协议到期时间", "协议期到期时间":
		return "agreementExpiryDate"
	case "hastestperiod", "是否有测试期", "有测试期":
		return "hasTestPeriod"
	case "testperioddays", "测试期天数":
		return "testPeriodDays"
	case "testperiodlatestexpirydate", "测试期最晚过期日期", "测试期最晚到期日期":
		return "testPeriodLatestExpiryDate"
	case "hassilentperiod", "是否有沉默期", "有沉默期":
		return "hasSilentPeriod"
	case "silentperioddays", "沉默期天数":
		return "silentPeriodDays"
	case "silentperiodlatestexpirydate", "沉默期最晚过期日期", "沉默期最晚到期日期":
		return "silentPeriodLatestExpiryDate"
	default:
		return value
	}
}

func splitFields(line string) []string {
	line = strings.TrimSpace(line)
	if line == "" {
		return nil
	}
	parts := tokenSplitter.Split(line, -1)
	fields := make([]string, 0, len(parts))
	for _, part := range parts {
		if value := strings.TrimSpace(part); value != "" {
			fields = append(fields, value)
		}
	}
	return fields
}

func trimRow(values []string) []string {
	fields := make([]string, len(values))
	for index, value := range values {
		fields[index] = strings.TrimSpace(value)
	}
	return fields
}

func rowEmpty(fields []string) bool {
	for _, field := range fields {
		if strings.TrimSpace(field) != "" {
			return false
		}
	}
	return true
}

func expandRange(input Range) ([]*Row, error) {
	rangeType := strings.ToLower(strings.TrimSpace(input.RangeType))
	if rangeType == "" {
		rangeType = "iccid"
	}
	if rangeType != "iccid" && rangeType != "msisdn" && rangeType != "imsi" {
		return nil, gerror.New("rangeType must be iccid, msisdn or imsi")
	}

	if rangeType == "msisdn" {
		return expandSelectedRange(input.StartMSISDN, input.EndMSISDN, "msisdn")
	}
	if rangeType == "imsi" {
		return expandSelectedRange(input.StartIMSI, input.EndIMSI, "imsi")
	}

	iccidValues, err := iccidRange(input.StartICCID, input.EndICCID, true)
	if err != nil {
		return nil, gerror.Wrap(err, "invalid ICCID range")
	}
	msisdnValues, err := numericRange(input.StartMSISDN, input.EndMSISDN, false)
	if err != nil {
		return nil, gerror.Wrap(err, "invalid MSISDN range")
	}
	imsiValues, err := numericRange(input.StartIMSI, input.EndIMSI, false)
	if err != nil {
		return nil, gerror.Wrap(err, "invalid IMSI range")
	}
	if err = ensureRangeLength(len(iccidValues), len(msisdnValues), "MSISDN"); err != nil {
		return nil, err
	}
	if err = ensureRangeLength(len(iccidValues), len(imsiValues), "IMSI"); err != nil {
		return nil, err
	}
	rows := make([]*Row, 0, len(iccidValues))
	for index, iccid := range iccidValues {
		row := &Row{RowNo: index + 1, ICCID: iccid}
		if len(msisdnValues) > 0 {
			row.MSISDN = msisdnValues[index]
		}
		if len(imsiValues) > 0 {
			row.IMSI = imsiValues[index]
		}
		rows = append(rows, row)
	}
	return rows, nil
}

func expandSelectedRange(start, end, rangeType string) ([]*Row, error) {
	values, err := numericRange(start, end, true)
	if err != nil {
		return nil, gerror.Wrapf(err, "invalid %s range", strings.ToUpper(rangeType))
	}
	rows := make([]*Row, 0, len(values))
	for index, value := range values {
		row := &Row{RowNo: index + 1}
		switch rangeType {
		case "msisdn":
			row.MSISDN = value
		case "imsi":
			row.IMSI = value
		}
		rows = append(rows, row)
	}
	return rows, nil
}

func iccidRange(start, end string, required bool) ([]string, error) {
	start = strings.TrimSpace(start)
	end = strings.TrimSpace(end)
	if start == "" && end == "" && !required {
		return nil, nil
	}
	if start == "" || end == "" {
		return nil, gerror.New("start and end are required together")
	}
	if !allAlphaNumeric(start) || !allAlphaNumeric(end) {
		return nil, gerror.New("range values must be alphanumeric")
	}
	if len(start) != len(end) {
		return nil, gerror.New("range values must have the same length")
	}
	if start == end {
		return []string{start}, nil
	}
	startPrefix, startTail := splitTrailingDigits(start)
	endPrefix, endTail := splitTrailingDigits(end)
	if startTail == "" || endTail == "" {
		return nil, gerror.New("range values must contain incrementable numeric suffixes")
	}
	if startPrefix != endPrefix {
		return nil, gerror.New("range value prefixes must match")
	}
	tails, err := numericRange(startTail, endTail, true)
	if err != nil {
		return nil, err
	}
	values := make([]string, 0, len(tails))
	for _, tail := range tails {
		values = append(values, startPrefix+tail)
	}
	return values, nil
}

func numericRange(start, end string, required bool) ([]string, error) {
	start = strings.TrimSpace(start)
	end = strings.TrimSpace(end)
	if start == "" && end == "" && !required {
		return nil, nil
	}
	if start == "" || end == "" {
		return nil, gerror.New("start and end are required together")
	}
	if !allDigits(start) || !allDigits(end) {
		return nil, gerror.New("range values must be numeric")
	}
	startInt, ok := new(big.Int).SetString(start, 10)
	if !ok {
		return nil, gerror.New("invalid start value")
	}
	endInt, ok := new(big.Int).SetString(end, 10)
	if !ok {
		return nil, gerror.New("invalid end value")
	}
	if startInt.Cmp(endInt) > 0 {
		return nil, gerror.New("start must be less than or equal to end")
	}
	count := new(big.Int).Sub(endInt, startInt)
	count.Add(count, big.NewInt(1))
	if !count.IsInt64() || count.Int64() > 100000 {
		return nil, gerror.New("range is too large")
	}
	width := len(start)
	if len(end) > width {
		width = len(end)
	}
	values := make([]string, 0, int(count.Int64()))
	current := new(big.Int).Set(startInt)
	for current.Cmp(endInt) <= 0 {
		value := current.String()
		if len(value) < width {
			value = strings.Repeat("0", width-len(value)) + value
		}
		values = append(values, value)
		current.Add(current, big.NewInt(1))
	}
	return values, nil
}

func ensureRangeLength(iccidLength, otherLength int, name string) error {
	if otherLength > 0 && otherLength != iccidLength {
		return gerror.Newf("%s range count must match ICCID range count", name)
	}
	return nil
}

func normalizeRow(row *Row, options Options, useOptionFallback bool) {
	if row == nil {
		return
	}
	row.ICCID = strings.TrimSpace(row.ICCID)
	row.MSISDN = strings.TrimSpace(row.MSISDN)
	row.IMSI = strings.TrimSpace(row.IMSI)
	row.IMEI = strings.TrimSpace(row.IMEI)
	row.ChanKey = strings.TrimSpace(firstNonEmpty(row.ChanKey, fallbackOption(useOptionFallback, options.ChanKey)))
	row.CardType = normalizeCardType(firstNonEmpty(row.CardType, fallbackOption(useOptionFallback, options.CardType)))
	row.UpPkgCode = strings.TrimSpace(firstNonEmpty(row.UpPkgCode, fallbackOption(useOptionFallback, options.UpPkgCode)))
	row.SuppliersCode = strings.TrimSpace(firstNonEmpty(row.SuppliersCode, fallbackOption(useOptionFallback, options.SuppliersCode)))
	row.UpstreamActivationTime = strings.TrimSpace(firstNonEmpty(row.UpstreamActivationTime, fallbackOption(useOptionFallback, options.UpstreamActivationTime)))
	row.InsertToPlugEnabled = normalizeYesNo(firstNonEmpty(row.InsertToPlugEnabled, fallbackOption(useOptionFallback, options.InsertToPlugEnabled)))
	row.CarrierTrafficCutoffEnabled = normalizeYesNo(firstNonEmpty(row.CarrierTrafficCutoffEnabled, fallbackOption(useOptionFallback, options.CarrierTrafficCutoffEnabled)))
	row.AgreementExpiryDate = strings.TrimSpace(firstNonEmpty(row.AgreementExpiryDate, fallbackOption(useOptionFallback, options.AgreementExpiryDate)))
	row.HasTestPeriod = normalizeYesNo(firstNonEmpty(row.HasTestPeriod, fallbackOption(useOptionFallback, options.HasTestPeriod)))
	row.TestPeriodDays = strings.TrimSpace(firstNonEmpty(row.TestPeriodDays, fallbackOption(useOptionFallback, options.TestPeriodDays)))
	row.TestPeriodLatestExpiryDate = strings.TrimSpace(firstNonEmpty(row.TestPeriodLatestExpiryDate, fallbackOption(useOptionFallback, options.TestPeriodLatestExpiryDate)))
	row.HasSilentPeriod = normalizeYesNo(firstNonEmpty(row.HasSilentPeriod, fallbackOption(useOptionFallback, options.HasSilentPeriod)))
	row.SilentPeriodDays = strings.TrimSpace(firstNonEmpty(row.SilentPeriodDays, fallbackOption(useOptionFallback, options.SilentPeriodDays)))
	row.SilentPeriodLatestExpiryDate = strings.TrimSpace(firstNonEmpty(row.SilentPeriodLatestExpiryDate, fallbackOption(useOptionFallback, options.SilentPeriodLatestExpiryDate)))
}

func fallbackOption(enabled bool, value string) string {
	if !enabled {
		return ""
	}
	return value
}

func shouldUseInboundOptionFallback(task *Task) bool {
	if task == nil {
		return false
	}
	return task.Batch.SourceType != consts.BatchSourceTypeFile && task.Source.ImportFileOssID <= 0
}

func validateRow(row *Row, rangeType string) {
	if row == nil {
		return
	}
	var reasons []string
	if row.ICCID == "" && row.MSISDN == "" && row.IMSI == "" {
		reasons = append(reasons, "ICCID/MSISDN/IMSI至少填写一个")
	}
	if row.ICCID != "" && (len(row.ICCID) < minICCIDLength || len(row.ICCID) > maxIdentifierLength || !allAlphaNumeric(row.ICCID)) {
		reasons = append(reasons, "ICCID格式不正确")
	}
	if row.MSISDN != "" && (len(row.MSISDN) < minMSISDNLength || len(row.MSISDN) > maxIdentifierLength || !allDigits(row.MSISDN)) {
		reasons = append(reasons, "MSISDN格式不正确")
	}
	if row.IMSI != "" && (len(row.IMSI) < minIMSILength || len(row.IMSI) > maxIdentifierLength || !allDigits(row.IMSI)) {
		reasons = append(reasons, "IMSI格式不正确")
	}
	if row.IMEI != "" && (len(row.IMEI) > maxIdentifierLength || !allDigits(row.IMEI)) {
		reasons = append(reasons, "IMEI格式不正确")
	}
	if row.ChanKey == "" {
		reasons = append(reasons, "chanKey不能为空")
	}
	if len(reasons) > 0 {
		row.Reason = strings.Join(reasons, "；")
	}
}

func markSameBatchDuplicates(rows []*Row) {
	seenICCID := make(map[string]struct{}, len(rows))
	seenMSISDN := make(map[string]struct{}, len(rows))
	seenIMSI := make(map[string]struct{}, len(rows))
	for _, row := range rows {
		if row == nil || row.Reason != "" {
			continue
		}
		if row.ICCID != "" {
			if _, ok := seenICCID[row.ICCID]; ok {
				appendReason(row, "同批重复ICCID")
			} else {
				seenICCID[row.ICCID] = struct{}{}
			}
		}
		if row.MSISDN != "" {
			if _, ok := seenMSISDN[row.MSISDN]; ok {
				appendReason(row, "同批重复MSISDN")
			} else {
				seenMSISDN[row.MSISDN] = struct{}{}
			}
		}
		if row.IMSI != "" {
			if _, ok := seenIMSI[row.IMSI]; ok {
				appendReason(row, "同批重复IMSI")
			} else {
				seenIMSI[row.IMSI] = struct{}{}
			}
		}
	}
}

func markStockDuplicates(rows []*Row, stocks []Stock) {
	existingICCID := make(map[string]struct{}, len(stocks))
	existingMSISDN := make(map[string]struct{}, len(stocks))
	existingIMSI := make(map[string]struct{}, len(stocks))
	for _, stock := range stocks {
		if stock.ICCID != "" {
			existingICCID[strings.TrimSpace(stock.ICCID)] = struct{}{}
		}
		if stock.MSISDN != "" {
			existingMSISDN[strings.TrimSpace(stock.MSISDN)] = struct{}{}
		}
		if stock.IMSI != "" {
			existingIMSI[strings.TrimSpace(stock.IMSI)] = struct{}{}
		}
	}
	for _, row := range rows {
		if row == nil || row.Reason != "" {
			continue
		}
		if _, ok := existingICCID[row.ICCID]; ok && row.ICCID != "" {
			appendReason(row, "ICCID已存在库存")
		}
		if _, ok := existingMSISDN[row.MSISDN]; ok && row.MSISDN != "" {
			appendReason(row, "MSISDN已存在库存")
		}
		if _, ok := existingIMSI[row.IMSI]; ok && row.IMSI != "" {
			appendReason(row, "IMSI已存在库存")
		}
	}
}

func markIncompleteRows(rows []*Row) {
	for _, row := range rows {
		if row == nil || row.Reason != "" {
			continue
		}
		missing := make([]string, 0, 3)
		if strings.TrimSpace(row.ICCID) == "" {
			missing = append(missing, "ICCID")
		}
		if strings.TrimSpace(row.MSISDN) == "" {
			missing = append(missing, "MSISDN")
		}
		if strings.TrimSpace(row.IMSI) == "" {
			missing = append(missing, "IMSI")
		}
		if len(missing) > 0 {
			appendReason(row, "三码信息不完整: "+strings.Join(missing, ","))
		}
	}
}

func normalizeUpstreamBasicInfoValidationOption(value string) string {
	normalized := normalizeYesNo(value)
	if normalized == "1" {
		return "1"
	}
	return "0"
}

func syncInboundOptionsFromRows(task *Task) {
	if task == nil {
		return
	}
	checks := []struct {
		name   string
		get    func(*Row) string
		assign func(string)
	}{
		{name: "通道编号", get: func(row *Row) string { return row.ChanKey }, assign: func(value string) { task.Options.ChanKey = value }},
		{name: "卡类型", get: func(row *Row) string { return row.CardType }, assign: func(value string) { task.Options.CardType = value }},
		{name: "上游套餐编码", get: func(row *Row) string { return row.UpPkgCode }, assign: func(value string) { task.Options.UpPkgCode = value }},
		{name: "供应商编码", get: func(row *Row) string { return row.SuppliersCode }, assign: func(value string) { task.Options.SuppliersCode = value }},
		{name: "上游激活时间", get: func(row *Row) string { return row.UpstreamActivationTime }, assign: func(value string) { task.Options.UpstreamActivationTime = value }},
		{name: "是否贴片转插拔", get: func(row *Row) string { return row.InsertToPlugEnabled }, assign: func(value string) { task.Options.InsertToPlugEnabled = value }},
		{name: "是否运营商达量断网", get: func(row *Row) string { return row.CarrierTrafficCutoffEnabled }, assign: func(value string) { task.Options.CarrierTrafficCutoffEnabled = value }},
		{name: "协议到期时间", get: func(row *Row) string { return row.AgreementExpiryDate }, assign: func(value string) { task.Options.AgreementExpiryDate = value }},
		{name: "是否有测试期", get: func(row *Row) string { return row.HasTestPeriod }, assign: func(value string) { task.Options.HasTestPeriod = value }},
		{name: "测试期天数", get: func(row *Row) string { return row.TestPeriodDays }, assign: func(value string) { task.Options.TestPeriodDays = value }},
		{name: "测试期最晚过期日期", get: func(row *Row) string { return row.TestPeriodLatestExpiryDate }, assign: func(value string) { task.Options.TestPeriodLatestExpiryDate = value }},
		{name: "是否有沉默期", get: func(row *Row) string { return row.HasSilentPeriod }, assign: func(value string) { task.Options.HasSilentPeriod = value }},
		{name: "沉默期天数", get: func(row *Row) string { return row.SilentPeriodDays }, assign: func(value string) { task.Options.SilentPeriodDays = value }},
		{name: "沉默期最晚过期日期", get: func(row *Row) string { return row.SilentPeriodLatestExpiryDate }, assign: func(value string) { task.Options.SilentPeriodLatestExpiryDate = value }},
	}
	for _, check := range checks {
		value, ok := sameBatchOptionValue(task.Rows, check.get)
		if !ok {
			markRowsWithReason(task.Rows, check.name+"必须同批一致")
			if task.FailureReason == "" {
				task.FailureReason = "同批入库配置必须一致"
			}
			continue
		}
		if value != "" {
			check.assign(value)
		}
	}
	fillRowOptionsFromTask(task.Rows, task.Options)
}

func sameBatchOptionValue(rows []*Row, get func(*Row) string) (string, bool) {
	value := ""
	for _, row := range rows {
		if row == nil {
			continue
		}
		current := strings.TrimSpace(get(row))
		if current == "" {
			continue
		}
		if value == "" {
			value = current
			continue
		}
		if value != current {
			return "", false
		}
	}
	return value, true
}

func markRowsWithReason(rows []*Row, reason string) {
	for _, row := range rows {
		if row != nil {
			appendReason(row, reason)
		}
	}
}

func fillRowOptionsFromTask(rows []*Row, options Options) {
	for _, row := range rows {
		if row == nil {
			continue
		}
		row.ChanKey = firstNonEmpty(row.ChanKey, options.ChanKey)
		row.CardType = firstNonEmpty(row.CardType, options.CardType)
		row.UpPkgCode = firstNonEmpty(row.UpPkgCode, options.UpPkgCode)
		row.SuppliersCode = firstNonEmpty(row.SuppliersCode, options.SuppliersCode)
		row.UpstreamActivationTime = firstNonEmpty(row.UpstreamActivationTime, options.UpstreamActivationTime)
		row.InsertToPlugEnabled = firstNonEmpty(row.InsertToPlugEnabled, options.InsertToPlugEnabled)
		row.CarrierTrafficCutoffEnabled = firstNonEmpty(row.CarrierTrafficCutoffEnabled, options.CarrierTrafficCutoffEnabled)
		row.AgreementExpiryDate = firstNonEmpty(row.AgreementExpiryDate, options.AgreementExpiryDate)
		row.HasTestPeriod = firstNonEmpty(row.HasTestPeriod, options.HasTestPeriod)
		row.TestPeriodDays = firstNonEmpty(row.TestPeriodDays, options.TestPeriodDays)
		row.TestPeriodLatestExpiryDate = firstNonEmpty(row.TestPeriodLatestExpiryDate, options.TestPeriodLatestExpiryDate)
		row.HasSilentPeriod = firstNonEmpty(row.HasSilentPeriod, options.HasSilentPeriod)
		row.SilentPeriodDays = firstNonEmpty(row.SilentPeriodDays, options.SilentPeriodDays)
		row.SilentPeriodLatestExpiryDate = firstNonEmpty(row.SilentPeriodLatestExpiryDate, options.SilentPeriodLatestExpiryDate)
	}
}

func (e *executor) validateUpstreamBasicInfo(ctx context.Context, task *Task) error {
	started := time.Now()
	groups := groupRowsForUpstream(task.Rows)
	batchSize := inboundUpstreamBatchSize(ctx)
	jobs := make([]upstreamBasicInfoJob, 0, len(groups))
	upstreamRows := 0
	for chanKey, rows := range groups {
		upstreamRows += len(rows)
		for _, chunk := range chunkRows(rows, batchSize) {
			if len(chunk) == 0 {
				continue
			}
			jobs = append(jobs, upstreamBasicInfoJob{
				chanKey: chanKey,
				rows:    chunk,
			})
		}
	}
	if len(jobs) == 0 {
		return nil
	}
	workers := inboundUpstreamConcurrency(ctx)
	if workers < 1 {
		workers = 1
	}
	if workers > len(jobs) {
		workers = len(jobs)
	}
	g.Log().Infof(ctx, "inbound upstream basic-info started, batchNo:%s, rows:%d, groups:%d, jobs:%d, batchSize:%d, concurrency:%d",
		task.Batch.BatchNo, upstreamRows, len(groups), len(jobs), batchSize, workers)
	jobCh := make(chan upstreamBasicInfoJob)
	var wg sync.WaitGroup
	for i := 0; i < workers; i++ {
		wg.Add(1)
		go func() {
			defer wg.Done()
			for job := range jobCh {
				e.validateUpstreamBasicInfoChunk(ctx, task.Batch.BatchNo, job.chanKey, job.rows)
			}
		}()
	}
	for _, job := range jobs {
		jobCh <- job
	}
	close(jobCh)
	wg.Wait()
	g.Log().Infof(ctx, "inbound upstream basic-info completed, batchNo:%s, rows:%d, groups:%d, jobs:%d, batchSize:%d, concurrency:%d, failed:%d, durationMs:%d",
		task.Batch.BatchNo, upstreamRows, len(groups), len(jobs), batchSize, workers, countFailedRows(task.Rows), time.Since(started).Milliseconds())
	return nil
}

func (e *executor) validateUpstreamBasicInfoChunk(ctx context.Context, batchNo, chanKey string, rows []*Row) {
	if len(rows) == 0 {
		return
	}
	started := time.Now()
	simKeys := make([]*model.SimKey, 0, len(rows))
	for _, row := range rows {
		simKeys = append(simKeys, simKeyFromRow(row, chanKey))
	}
	if e.rateLimiter != nil {
		// The limiter controls upstream HTTP requests. One chunk produces one
		// request, regardless of how many SIM keys it contains.
		if err := e.rateLimiter.Wait(ctx, chanKey, 1); err != nil {
			for _, row := range rows {
				appendReason(row, "上游三码校验限流失败: "+err.Error())
			}
			g.Log().Warningf(ctx, "inbound upstream basic-info rate limit failed, batchNo:%s, chanKey:%s, rows:%d, durationMs:%d, err:%+v",
				batchNo, chanKey, len(rows), time.Since(started).Milliseconds(), err)
			return
		}
	}
	response, err := e.upstream.QuerySimBasicInfo(ctx, &model.SimBasicInfoInput{
		SimKeys: simKeys,
		ReqData: model.SimInputReqNullDate{},
	})
	if err != nil {
		for _, row := range rows {
			appendReason(row, "上游三码校验失败: "+err.Error())
		}
		g.Log().Warningf(ctx, "inbound upstream basic-info chunk failed, batchNo:%s, chanKey:%s, rows:%d, durationMs:%d, err:%+v",
			batchNo, chanKey, len(rows), time.Since(started).Milliseconds(), err)
		return
	}
	applyUpstreamBasicInfoResponse(rows, response)
	if duration := time.Since(started); duration >= time.Second {
		g.Log().Infof(ctx, "inbound upstream basic-info chunk completed, batchNo:%s, chanKey:%s, rows:%d, response:%d, failed:%d, durationMs:%d",
			batchNo, chanKey, len(rows), len(response), countFailedRows(rows), duration.Milliseconds())
	}
}

func simKeyFromRow(row *Row, chanKey string) *model.SimKey {
	if row == nil {
		return &model.SimKey{ChanKey: chanKey}
	}
	if row.ICCID != "" {
		return &model.SimKey{
			ChanKey: chanKey,
			ICCID:   row.ICCID,
		}
	}
	return &model.SimKey{
		ChanKey: chanKey,
		MSISDN:  row.MSISDN,
		IMSI:    row.IMSI,
	}
}

func groupRowsForUpstream(rows []*Row) map[string][]*Row {
	groups := make(map[string][]*Row)
	for _, row := range rows {
		if row == nil || row.Reason != "" || row.ChanKey == "" {
			continue
		}
		groups[row.ChanKey] = append(groups[row.ChanKey], row)
	}
	return groups
}

type upstreamBasicInfoJob struct {
	chanKey string
	rows    []*Row
}

func chunkRows(rows []*Row, size int) [][]*Row {
	if size <= 0 {
		size = defaultInboundUpstreamBatchSize
	}
	if len(rows) == 0 {
		return nil
	}
	chunks := make([][]*Row, 0, (len(rows)+size-1)/size)
	for start := 0; start < len(rows); start += size {
		end := start + size
		if end > len(rows) {
			end = len(rows)
		}
		chunks = append(chunks, rows[start:end])
	}
	return chunks
}

func inboundUpstreamBatchSize(ctx context.Context) int {
	value := g.Cfg().MustGet(ctx, inboundUpstreamBatchSizeConfigKey, defaultInboundUpstreamBatchSize).Int()
	if value <= 0 {
		return defaultInboundUpstreamBatchSize
	}
	return value
}

func inboundUpstreamConcurrency(ctx context.Context) int {
	value := g.Cfg().MustGet(ctx, inboundUpstreamConcurrencyKey, defaultInboundUpstreamConcurrency).Int()
	if value <= 0 {
		return defaultInboundUpstreamConcurrency
	}
	return value
}

func applyUpstreamBasicInfoResponse(rows []*Row, response []model.SimBaseRes[model.SimBasicInfoItem]) {
	if len(response) == 0 {
		for _, row := range rows {
			appendReason(row, "上游未返回SIM卡信息")
		}
		return
	}
	index := newBasicInfoResponseIndex(response)
	for _, row := range rows {
		item, ok := index.take(row)
		if !ok {
			appendReason(row, "上游未返回SIM卡信息")
			continue
		}
		if item.Code != 0 {
			reason := strings.TrimSpace(item.Message)
			if reason == "" {
				reason = "上游返回失败"
			}
			appendReason(row, "上游三码校验失败: "+reason)
			continue
		}
		info := normalizeBasicInfo(item.ResData)
		if reason := upstreamBasicInfoEmptyReason(item, info); reason != "" {
			appendReason(row, reason)
			continue
		}
		if reason := compareBasicInfo(row, info); reason != "" {
			appendReason(row, reason)
			continue
		}
		if reason := completeBasicInfoReason(info); reason != "" {
			appendReason(row, reason)
			continue
		}
		applyBasicInfo(row, info)
	}
}

type basicInfoResponseIndex struct {
	response []model.SimBaseRes[model.SimBasicInfoItem]
	infos    []model.SimBasicInfoItem
	used     []bool
	byICCID  map[string][]int
	byMSISDN map[string][]int
	byIMSI   map[string][]int
}

func newBasicInfoResponseIndex(response []model.SimBaseRes[model.SimBasicInfoItem]) *basicInfoResponseIndex {
	index := &basicInfoResponseIndex{
		response: response,
		infos:    make([]model.SimBasicInfoItem, len(response)),
		used:     make([]bool, len(response)),
		byICCID:  make(map[string][]int, len(response)),
		byMSISDN: make(map[string][]int, len(response)),
		byIMSI:   make(map[string][]int, len(response)),
	}
	for i := range response {
		info := normalizeBasicInfo(response[i].ResData)
		index.infos[i] = info
		index.addInfoKeys(i, info)
		if response[i].SimKey != nil {
			index.addSimKeyKeys(i, response[i].SimKey)
		}
	}
	return index
}

func (i *basicInfoResponseIndex) addInfoKeys(index int, info model.SimBasicInfoItem) {
	appendResponseIndex(i.byICCID, iccidIndexKey(info.ICCID), index)
	appendResponseIndex(i.byMSISDN, identifierIndexKey(info.MSISDN), index)
	appendResponseIndex(i.byIMSI, identifierIndexKey(info.IMSI), index)
}

func (i *basicInfoResponseIndex) addSimKeyKeys(index int, simKey *model.SimKey) {
	if simKey == nil {
		return
	}
	appendResponseIndex(i.byICCID, iccidIndexKey(simKey.ICCID), index)
	appendResponseIndex(i.byMSISDN, identifierIndexKey(simKey.MSISDN), index)
	appendResponseIndex(i.byIMSI, identifierIndexKey(simKey.IMSI), index)
}

func appendResponseIndex(values map[string][]int, key string, index int) {
	if key == "" {
		return
	}
	values[key] = append(values[key], index)
}

func (i *basicInfoResponseIndex) take(row *Row) (model.SimBaseRes[model.SimBasicInfoItem], bool) {
	if i == nil || row == nil {
		return model.SimBaseRes[model.SimBasicInfoItem]{}, false
	}
	for _, candidates := range [][]int{
		i.byICCID[iccidIndexKey(row.ICCID)],
		i.byMSISDN[identifierIndexKey(row.MSISDN)],
		i.byIMSI[identifierIndexKey(row.IMSI)],
	} {
		for _, candidate := range candidates {
			if candidate < 0 || candidate >= len(i.response) || i.used[candidate] {
				continue
			}
			if rowMatchesBasicInfo(row, i.infos[candidate]) || rowMatchesSimKey(row, i.response[candidate].SimKey) {
				i.used[candidate] = true
				return i.response[candidate], true
			}
		}
	}
	return model.SimBaseRes[model.SimBasicInfoItem]{}, false
}

func iccidIndexKey(value string) string {
	return strings.ToUpper(strings.TrimSpace(value))
}

func identifierIndexKey(value string) string {
	return strings.TrimSpace(value)
}

func compareBasicInfo(row *Row, info model.SimBasicInfoItem) string {
	missing := make([]string, 0, 3)
	mismatches := make([]string, 0, 3)
	if row.ICCID != "" {
		actual := strings.TrimSpace(info.ICCID)
		if actual == "" {
			missing = append(missing, "ICCID")
		} else if !sameICCID(actual, row.ICCID) {
			mismatches = append(mismatches, "ICCID")
		}
	}
	if row.MSISDN != "" {
		actual := strings.TrimSpace(info.MSISDN)
		if actual == "" {
			missing = append(missing, "MSISDN")
		} else if actual != row.MSISDN {
			mismatches = append(mismatches, "MSISDN")
		}
	}
	if row.IMSI != "" {
		actual := strings.TrimSpace(info.IMSI)
		if actual == "" {
			missing = append(missing, "IMSI")
		} else if actual != row.IMSI {
			mismatches = append(mismatches, "IMSI")
		}
	}
	if len(missing) > 0 {
		return "上游未返回三码信息: " + strings.Join(missing, ",")
	}
	if len(mismatches) == 0 {
		return ""
	}
	return "上游三码校验不一致: " + strings.Join(mismatches, ",")
}

func normalizeBasicInfo(info model.SimBasicInfoItem) model.SimBasicInfoItem {
	info.ICCID = strings.TrimSpace(info.ICCID)
	info.MSISDN = strings.TrimSpace(info.MSISDN)
	info.IMSI = strings.TrimSpace(info.IMSI)
	info.ActiveDate = strings.TrimSpace(info.ActiveDate)
	info.OpenDate = strings.TrimSpace(info.OpenDate)
	info.Remark = strings.TrimSpace(info.Remark)
	return info
}

func upstreamBasicInfoEmptyReason(item model.SimBaseRes[model.SimBasicInfoItem], info model.SimBasicInfoItem) string {
	if info.ICCID != "" || info.MSISDN != "" || info.IMSI != "" {
		return ""
	}
	message := strings.TrimSpace(item.Message)
	if message == "" {
		return ""
	}
	if strings.Contains(message, "未查询") || strings.Contains(message, "不存在") {
		return "上游三码校验失败: " + message
	}
	return ""
}

func completeBasicInfoReason(info model.SimBasicInfoItem) string {
	missing := make([]string, 0, 3)
	if strings.TrimSpace(info.ICCID) == "" {
		missing = append(missing, "ICCID")
	}
	if strings.TrimSpace(info.MSISDN) == "" {
		missing = append(missing, "MSISDN")
	}
	if strings.TrimSpace(info.IMSI) == "" {
		missing = append(missing, "IMSI")
	}
	if len(missing) == 0 {
		return ""
	}
	return "上游未返回完整三码信息: " + strings.Join(missing, ",")
}

func applyBasicInfo(row *Row, info model.SimBasicInfoItem) {
	if row == nil {
		return
	}
	row.ICCID = strings.TrimSpace(info.ICCID)
	row.MSISDN = strings.TrimSpace(info.MSISDN)
	row.IMSI = strings.TrimSpace(info.IMSI)
}

func rowMatchesBasicInfo(row *Row, info model.SimBasicInfoItem) bool {
	if row == nil {
		return false
	}
	if row.ICCID != "" && info.ICCID != "" && sameICCID(info.ICCID, row.ICCID) {
		return true
	}
	if row.MSISDN != "" && info.MSISDN != "" && sameIdentifier(info.MSISDN, row.MSISDN) {
		return true
	}
	if row.IMSI != "" && info.IMSI != "" && sameIdentifier(info.IMSI, row.IMSI) {
		return true
	}
	return false
}

func rowMatchesSimKey(row *Row, simKey *model.SimKey) bool {
	if row == nil || simKey == nil {
		return false
	}
	return rowMatchesBasicInfo(row, model.SimBasicInfoItem{
		ICCID:  simKey.ICCID,
		MSISDN: simKey.MSISDN,
		IMSI:   simKey.IMSI,
	})
}

func sameICCID(a, b string) bool {
	return strings.EqualFold(strings.TrimSpace(a), strings.TrimSpace(b))
}

func sameIdentifier(a, b string) bool {
	return strings.TrimSpace(a) == strings.TrimSpace(b)
}

func applyCascadeFailure(task *Task) {
	for _, row := range task.Rows {
		if row != nil && row.Reason == "" {
			row.Reason = cascadeFailureReason
		}
	}
	if task.FailureReason == "" {
		task.FailureReason = "同批存在校验失败，本次整批未入库"
	}
}

func hasFailedRows(rows []*Row) bool {
	for _, row := range rows {
		if row != nil && row.Reason != "" {
			return true
		}
	}
	return false
}

func countValidRows(rows []*Row) int {
	count := 0
	for _, row := range rows {
		if row != nil && row.Reason == "" {
			count++
		}
	}
	return count
}

func countFailedRows(rows []*Row) int {
	count := 0
	for _, row := range rows {
		if row != nil && row.Reason != "" && row.Reason != cascadeFailureReason {
			count++
		}
	}
	return count
}

func inboundRowStatus(row *Row) string {
	if IsCascadeFailure(row) {
		return "未执行"
	}
	if row.Reason != "" {
		return "失败"
	}
	return "成功"
}

func IsCascadeFailure(row *Row) bool {
	return row != nil && row.Reason == cascadeFailureReason
}

func rowKeys(rows []*Row) ([]string, []string, []string) {
	iccidSet := make(map[string]struct{}, len(rows))
	msisdnSet := make(map[string]struct{}, len(rows))
	imsiSet := make(map[string]struct{}, len(rows))
	for _, row := range rows {
		if row == nil || row.Reason != "" {
			continue
		}
		if row.ICCID != "" {
			iccidSet[row.ICCID] = struct{}{}
		}
		if row.MSISDN != "" {
			msisdnSet[row.MSISDN] = struct{}{}
		}
		if row.IMSI != "" {
			imsiSet[row.IMSI] = struct{}{}
		}
	}
	return setKeys(iccidSet), setKeys(msisdnSet), setKeys(imsiSet)
}

func setKeys(values map[string]struct{}) []string {
	keys := make([]string, 0, len(values))
	for key := range values {
		keys = append(keys, key)
	}
	return keys
}

func appendReason(row *Row, reason string) {
	if row.Reason == "" {
		row.Reason = reason
		return
	}
	row.Reason += "；" + reason
}

func allDigits(value string) bool {
	if value == "" {
		return false
	}
	for _, r := range value {
		if r < '0' || r > '9' {
			return false
		}
	}
	return true
}

func splitTrailingDigits(value string) (prefix, digits string) {
	index := len(value)
	for index > 0 {
		ch := value[index-1]
		if ch < '0' || ch > '9' {
			break
		}
		index--
	}
	return value[:index], value[index:]
}

func allAlphaNumeric(value string) bool {
	if value == "" {
		return false
	}
	for _, r := range value {
		if (r >= '0' && r <= '9') || (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') {
			continue
		}
		return false
	}
	return true
}

func firstNonEmpty(values ...string) string {
	for _, value := range values {
		if strings.TrimSpace(value) != "" {
			return strings.TrimSpace(value)
		}
	}
	return ""
}

func normalizeYesNo(value string) string {
	value = strings.TrimSpace(strings.ToLower(value))
	if value == "" {
		return ""
	}
	value = strings.NewReplacer(" ", "", "　", "").Replace(value)
	switch value {
	case "0", "是", "true", "y", "yes", "启用", "开启", "有":
		return "0"
	case "1", "否", "false", "n", "no", "禁用", "关闭", "无":
		return "1"
	default:
		return value
	}
}

func normalizeCardType(value string) string {
	value = strings.TrimSpace(value)
	if value == "" {
		return ""
	}
	compact := strings.NewReplacer(" ", "", "　", "", "-", "", "_", "", "‑", "", "－", "", "×", "x", "X", "x").Replace(strings.ToLower(value))
	switch compact {
	case "1", "通用插拔sim卡", "通用插拔卡", "插拔卡":
		return "1"
	case "2", "贴片m2m卡5x6mm", "m2m5x6", "贴片卡5x6":
		return "2"
	case "3", "贴片m2m卡2x2mm", "m2m2x2", "贴片卡2x2":
		return "3"
	case "4", "mp1消费级插拔物联卡", "mp1":
		return "4"
	case "5", "mp2工业级插拔物联卡", "mp2":
		return "5"
	case "6", "ms0消费级贴片物联卡", "ms0":
		return "6"
	case "7", "ms1工业级贴片物联卡", "ms1":
		return "7"
	default:
		return value
	}
}

func valueAt(values []string, index int) string {
	if index < 0 || index >= len(values) {
		return ""
	}
	return strings.TrimSpace(values[index])
}

func valueForHeader(values []string, header map[string]int, key string) string {
	index, ok := header[key]
	if !ok {
		return ""
	}
	return valueAt(values, index)
}

func resultRequest(task *Task) batchresult.Request {
	rows := make([]batchresult.Row, 0, len(task.Rows))
	for _, row := range task.Rows {
		if row == nil {
			continue
		}
		rows = append(rows, batchresult.Row{
			RowNo:   row.RowNo,
			ICCID:   row.ICCID,
			MSISDN:  row.MSISDN,
			IMSI:    row.IMSI,
			Success: row.Reason == "",
			Status:  inboundRowStatus(row),
			Reason:  row.Reason,
		})
	}
	return batchresult.Request{BatchNo: task.Batch.BatchNo, BatchType: task.Batch.BatchType, TenantID: task.Batch.TenantID, Rows: rows}
}

func (r Range) String() string {
	return fmt.Sprintf("%s-%s", r.StartICCID, r.EndICCID)
}