package outbound

import (
	"context"
	"fmt"
	"strings"

	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/consts"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/library/batchimport"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/library/contexts"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/model"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/model/entity"

	"github.com/gogf/gf/v2/database/gdb"
	"github.com/gogf/gf/v2/encoding/gjson"
	"github.com/gogf/gf/v2/errors/gerror"
	"github.com/gogf/gf/v2/frame/g"
)

type Processor struct {
	repo             *Repository
	opts             PreviewOptions
	config           batchimport.ProcessorConfig
	excelSubmitParam *model.TSimCardOutboundSubmitParam
}

func (p *Processor) ExecutePending(ctx context.Context, tx gdb.TX, batchNo string, in *model.TSimCardOutboundSubmitParam, rows []*Row, operator batchimport.OperatorContext, requiredSourceBatchNo string) (*CompleteOutput, error) {
	if strings.TrimSpace(batchNo) == "" {
		return nil, gerror.New("出库批次号不能为空")
	}
	if in == nil {
		return nil, gerror.New("出库参数不能为空")
	}
	if err := p.validateExecuteContext(ctx, tx, in, operator, rows, requiredSourceBatchNo); err != nil {
		return nil, err
	}
	return p.Complete(ctx, tx, &CompleteInput{
		SubmitParam:           in,
		BatchNo:               batchNo,
		Rows:                  rows,
		Operator:              operator,
		StrictStockIdentity:   p.opts.StrictStockIdentity,
		RequiredSourceBatchNo: requiredSourceBatchNo,
	})
}

const (
	outboundCardPackageType = 101
	outboundPoolPackageType = 102
)

func NewProcessor(opts PreviewOptions) *Processor {
	return &Processor{
		repo: NewRepository(),
		opts: opts,
		config: batchimport.ProcessorConfig{
			Code:            "sim_card_outbound",
			BatchType:       consts.BatchTypeOutbound,
			BatchNoPrefix:   consts.BatchNoPrefixOutbound,
			TaskName:        consts.ResourceBatchDownloadTaskSimCardOutbound,
			ExportScene:     consts.ResourceExportSceneOutbound,
			ImportDir:       consts.SimCardOutboundSubDirImportExcel,
			ResultDir:       consts.SimCardOutboundSubDirResultExcel,
			MaxFileSize:     consts.SimCardOutboundMaxFileSize,
			TemplateHeaders: excelHeaders(),
			RequiredHeaders: excelRequiredHeaders(),
		},
	}
}

func (p *Processor) Config() batchimport.ProcessorConfig {
	return p.config
}

func (p *Processor) ParseRows(ctx context.Context, filePath string) ([]batchimport.Row, error) {
	parsed, err := ParseExcelFile(ctx, filePath)
	if err != nil {
		return nil, err
	}
	p.excelSubmitParam = nil
	if parsed != nil {
		p.excelSubmitParam = parsed.SubmitParam
	}
	result := make([]batchimport.Row, 0, len(parsed.Rows))
	for _, row := range parsed.Rows {
		result = append(result, row)
	}
	return result, nil
}

func (p *Processor) ValidateRows(ctx context.Context, rows []batchimport.Row) error {
	outboundRows := make([]*Row, 0, len(rows))
	for _, item := range rows {
		row, ok := item.(*Row)
		if !ok {
			item.AddErrorReason("导入行类型错误")
			continue
		}
		outboundRows = append(outboundRows, row)
	}

	opts := p.opts
	if opts.DeptId == 0 {
		opts.DeptId = contexts.GetDeptId(ctx)
	}
	return validateRows(ctx, outboundRows, opts, p.repo)
}

func (p *Processor) Execute(ctx context.Context, tx gdb.TX, req *batchimport.SubmitRequest, rows []batchimport.Row) error {
	if req == nil {
		return gerror.New("出库请求不能为空")
	}
	in := p.submitParams(req.BizParams)
	if in == nil {
		return gerror.New("出库参数类型错误")
	}

	outboundRows := make([]*Row, 0, len(rows))
	for _, item := range rows {
		row, ok := item.(*Row)
		if !ok {
			return gerror.New("导入行类型错误")
		}
		outboundRows = append(outboundRows, row)
	}
	if err := p.validateExecuteContext(ctx, tx, in, req.Operator, outboundRows, requiredSourceBatchNo(req.BizParams)); err != nil {
		return err
	}

	output, err := p.Complete(ctx, tx, &CompleteInput{
		SubmitParam:           in,
		BatchNo:               req.BatchNo,
		Rows:                  outboundRows,
		Operator:              req.Operator,
		StrictStockIdentity:   p.opts.StrictStockIdentity,
		RequiredSourceBatchNo: requiredSourceBatchNo(req.BizParams),
	})
	if err != nil {
		return err
	}
	req.ExecutionResult = output
	return nil
}

func (p *Processor) BuildBatchInfo(ctx context.Context, req batchimport.SubmitRequest, result *batchimport.Result, importOss *model.SysOssSaveContentModel, resultOss *model.SysOssSaveContentModel, downloadId int64) *gjson.Json {
	info := g.Map{}
	info["strictStockIdentity"] = p.opts.StrictStockIdentity
	if result != nil && result.ImportFileOssId > 0 {
		info["importFileOssId"] = result.ImportFileOssId
	} else if importOss != nil {
		info["importFileOssId"] = importOss.OssId
	}
	if resultOss != nil {
		info["resultFileOssId"] = resultOss.OssId
	}
	if downloadId > 0 {
		info["resultDownloadId"] = downloadId
	}
	if in := p.submitParams(req.BizParams); in != nil {
		normalizeSubmitParam(in)
		info["customerAgentId"] = in.CustomerAgentId
		info["packageCode"] = strings.TrimSpace(in.PackageCode)
		info["packageBeginTime"] = in.PackageBeginTime
		info["durationYears"] = in.DurationYears
		info["durationMonthPart"] = in.DurationMonthPart
		info["durationMonths"] = in.DurationMonths
		info["giftDurationYears"] = in.GiftDurationYears
		info["giftDurationMonthPart"] = in.GiftDurationMonthPart
		info["giftDurationMonths"] = in.GiftDurationMonths
		info["amount"] = strings.TrimSpace(in.Amount)
		info["offlineContractCompleted"] = in.OfflineContractCompleted
		info["remark"] = normalizedRemark(in)
		info["buyerNote"] = normalizedRemark(in)
		info["adminNote"] = normalizedRemark(in)
	}
	if in, ok := req.BizParams.(*model.TSimCardOutboundRangeSubmitParam); ok && in != nil {
		info["rangeCodeType"] = normalizeRangeCodeType(in.RangeCodeType)
		info["startIccid"] = strings.TrimSpace(in.StartIccid)
		info["endIccid"] = strings.TrimSpace(in.EndIccid)
		info["startMsisdn"] = strings.TrimSpace(in.StartMsisdn)
		info["endMsisdn"] = strings.TrimSpace(in.EndMsisdn)
		info["startImsi"] = strings.TrimSpace(in.StartImsi)
		info["endImsi"] = strings.TrimSpace(in.EndImsi)
	}
	if in, ok := req.BizParams.(*model.TSimCardOutboundBatchSubmitParam); ok && in != nil {
		info["inboundBatchNo"] = strings.TrimSpace(in.BatchNo)
	}
	if output, ok := req.ExecutionResult.(*CompleteOutput); ok && output != nil {
		info["orderSn"] = output.OrderSn
		info["quantity"] = output.Quantity
		info["sourceBatchNos"] = output.SourceBatchNos
		info["packageBeginTime"] = output.PackageBeginAt
		info["packageEndTime"] = output.PackageEndAt
		info["packageStatus"] = output.PackageStatus
		info["effectiveStatus"] = output.EffectiveStatus
		if output.Customer != nil {
			info["customerName"] = output.Customer.DeptName
		}
		if output.Package != nil {
			info["packageName"] = output.Package.PackageName
			info["packageType"] = output.Package.PackageType
		}
	}
	return gjson.New(info)
}

func (p *Processor) validateExecuteContext(ctx context.Context, tx gdb.TX, in *model.TSimCardOutboundSubmitParam, operator batchimport.OperatorContext, rows []*Row, requiredSourceBatchNo string) error {
	normalizeSubmitParam(in)
	if err := validateSubmitParam(in); err != nil {
		return err
	}
	if err := p.validateSelectablePackage(ctx, tx, in.PackageCode, operator.TenantId); err != nil {
		return err
	}
	iccids, err := validateOutboundIdentifiers(rows)
	if err != nil {
		return err
	}
	if len(iccids) == 0 {
		return errOutboundValidationRejected
	}
	stockByIccid, err := p.repo.LockStockCardsByIccids(ctx, tx, iccids)
	if err != nil {
		return gerror.Wrap(err, "校验出库库存卡失败")
	}
	formalByIccid, err := p.repo.GetExistingFormalIccids(ctx, iccids)
	if err != nil {
		return gerror.Wrap(err, "校验正式卡失败")
	}

	for _, row := range rows {
		if row == nil || row.Reason != "" {
			continue
		}
		stock := stockByIccid[row.Iccid]
		reason := validateOutboundRow(row, stock, formalByIccid[row.Iccid], operator, p.opts.StrictStockIdentity, requiredSourceBatchNo)
		if reason != "" {
			row.AddReason(reason)
		}
	}

	if hasInvalidRows(rows) {
		markRemainingRowsSkipped(rows)
		return errOutboundValidationRejected
	}
	return nil
}

func validateOutboundIdentifiers(rows []*Row) ([]string, error) {
	seen := make(map[string]*Row, len(rows))
	for _, row := range rows {
		if row == nil {
			return nil, gerror.New("出库行不能为空")
		}
		row.Iccid = strings.TrimSpace(row.Iccid)
		if row.Iccid == "" {
			row.AddReason("ICCID不能为空")
			continue
		}
		if first, exists := seen[row.Iccid]; exists {
			row.AddReason(fmt.Sprintf("ICCID与第%d行重复", first.RowNo))
			first.AddReason(fmt.Sprintf("ICCID与第%d行重复", row.RowNo))
			continue
		}
		seen[row.Iccid] = row
	}
	iccids := make([]string, 0, len(seen))
	for iccid, row := range seen {
		if row.Reason == "" {
			iccids = append(iccids, iccid)
		}
	}
	return iccids, nil
}

func (p *Processor) validateSelectablePackage(ctx context.Context, tx gdb.TX, packageCode, tenantId string) error {
	pkg, err := p.repo.LoadPackage(ctx, tx, tenantId, packageCode)
	if err != nil {
		return gerror.Wrap(err, "校验出库套餐失败")
	}
	if pkg == nil {
		return gerror.New("出库套餐不存在")
	}
	if !isOutboundSelectablePackageType(pkg.PackageType) {
		return gerror.New("出库套餐必须是卡套餐或池套餐")
	}
	if pkg.Enabled != 1 {
		return gerror.New("出库套餐未启用，不能出库")
	}
	return nil
}

func isOutboundSelectablePackageType(packageType int) bool {
	return packageType == outboundCardPackageType || packageType == outboundPoolPackageType
}

func normalizeSubmitParam(in *model.TSimCardOutboundSubmitParam) {
	if in == nil {
		return
	}
	if in.DurationMonths <= 0 && in.DurationYears > 0 {
		in.DurationMonths = in.DurationYears*12 + in.DurationMonthPart
	}
	if in.DurationMonths <= 0 && in.DurationMonthPart > 0 {
		in.DurationMonths = in.DurationMonthPart
	}
	if in.DurationYears <= 0 && in.DurationMonthPart <= 0 && in.DurationMonths > 0 {
		in.DurationYears = in.DurationMonths / 12
		in.DurationMonthPart = in.DurationMonths % 12
	}
	if in.GiftDurationMonths <= 0 && in.GiftDurationYears > 0 {
		in.GiftDurationMonths = in.GiftDurationYears*12 + in.GiftDurationMonthPart
	}
	if in.GiftDurationMonths <= 0 && in.GiftDurationMonthPart > 0 {
		in.GiftDurationMonths = in.GiftDurationMonthPart
	}
	if in.GiftDurationYears <= 0 && in.GiftDurationMonthPart <= 0 && in.GiftDurationMonths > 0 {
		in.GiftDurationYears = in.GiftDurationMonths / 12
		in.GiftDurationMonthPart = in.GiftDurationMonths % 12
	}
	disablePeriodOptions(in)
	if remark := normalizedRemark(in); remark != "" {
		in.Remark = remark
		in.BuyerNote = remark
		in.AdminNote = remark
	}
}

func disablePeriodOptions(in *model.TSimCardOutboundSubmitParam) {
	if in == nil {
		return
	}
	// 1 表示否。出库不再暴露测试期、沉默期配置，统一按无测试期/无沉默期保存。
	in.HasTestPeriod = 1
	in.TestPeriodDays = 0
	in.TestPeriodLatestExpiryDate = nil
	in.HasSilentPeriod = 1
	in.SilentPeriodDays = 0
	in.SilentPeriodLatestExpiryDate = nil
}

func normalizedRemark(in *model.TSimCardOutboundSubmitParam) string {
	if in == nil {
		return ""
	}
	if value := strings.TrimSpace(in.Remark); value != "" {
		return value
	}
	if value := strings.TrimSpace(in.BuyerNote); value != "" {
		return value
	}
	return strings.TrimSpace(in.AdminNote)
}

func (p *Processor) submitParams(params any) *model.TSimCardOutboundSubmitParam {
	if in := outboundSubmitParams(params); in != nil {
		return in
	}
	return p.excelSubmitParam
}

func validateOutboundRow(row *Row, stock *entity.TSimCardStock, formalExists bool, operator batchimport.OperatorContext, strictStockIdentity bool, requiredSourceBatchNo string) string {
	var reasons []string
	if stock == nil {
		return "ICCID不存在库存记录，不能出库"
	}
	if stock.CreatedDept != operator.DeptId {
		reasons = append(reasons, "ICCID不属于当前机构库存，不能出库")
	}
	if requiredSourceBatchNo != "" && strings.TrimSpace(stock.BatchNo) != requiredSourceBatchNo {
		reasons = append(reasons, "ICCID不属于指定库存批次，不能出库")
	}
	if formalExists {
		reasons = append(reasons, "ICCID已存在正式卡记录，不能出库")
	}
	if strictStockIdentity {
		if strings.TrimSpace(row.Msisdn) != strings.TrimSpace(stock.Msisdn) {
			reasons = append(reasons, "MSISDN与库存记录不一致，不能出库")
		}
		if strings.TrimSpace(row.Imsi) != strings.TrimSpace(stock.Imsi) {
			reasons = append(reasons, "IMSI与库存记录不一致，不能出库")
		}
	}
	return strings.Join(reasons, "；")
}

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

func markRemainingRowsSkipped(rows []*Row) {
	for _, row := range rows {
		if row != nil && row.Reason == "" {
			row.AddReason(outboundNotExecutedReason)
		}
	}
}

func outboundSubmitParams(params any) *model.TSimCardOutboundSubmitParam {
	switch in := params.(type) {
	case *model.TSimCardOutboundSubmitParam:
		return in
	case *model.TSimCardOutboundRangeSubmitParam:
		if in == nil {
			return nil
		}
		return &in.TSimCardOutboundSubmitParam
	case *model.TSimCardOutboundInputSubmitParam:
		if in == nil {
			return nil
		}
		return &in.TSimCardOutboundSubmitParam
	case *model.TSimCardOutboundBatchSubmitParam:
		if in == nil {
			return nil
		}
		return &in.TSimCardOutboundSubmitParam
	default:
		return nil
	}
}

func requiredSourceBatchNo(params any) string {
	if in, ok := params.(*model.TSimCardOutboundBatchSubmitParam); ok && in != nil {
		return strings.TrimSpace(in.BatchNo)
	}
	return ""
}