func (cdre *CdrExporter) getDateTimeFieldVal(cdr *engine.StoredCdr, cfgCdrFld *config.CfgCdrField) (string, error) {
	if len(cfgCdrFld.Value) == 0 {
		return "", nil
	}
	for _, fltrRl := range cfgCdrFld.FieldFilter {
		if fltrPass, _ := cdr.PassesFieldFilter(fltrRl); !fltrPass {
			return "", fmt.Errorf("Field: %s not matching filter rule %v", fltrRl.Id, fltrRl)
		}
	}
	layout := cfgCdrFld.Layout
	if len(layout) == 0 {
		layout = time.RFC3339
	}
	if dtFld, err := utils.ParseTimeDetectLayout(cdr.FieldAsString(cfgCdrFld.Value[0]), cdre.timezone); err != nil { // Only one rule makes sense here
		return "", err
	} else {
		return dtFld.Format(layout), nil
	}
}

func (cdre *CdrExporter) getCombimedCdrFieldVal(processedCdr *engine.StoredCdr, cfgCdrFld *config.CfgCdrField) (string, error) {
	var combinedVal string // Will result as combination of the field values, filters must match
	for _, filterRule := range cfgCdrFld.FieldFilter {
		fltrPass, ftrPassValue := processedCdr.PassesFieldFilter(filterRule)
		if !fltrPass {
			return "", nil
		}
		for _, cdr := range cdre.cdrs {
			if cdr.CgrId != processedCdr.CgrId {
				continue // We only care about cdrs with same primary cdr behind
			}
			if cdr.FieldAsString(&utils.RSRField{Id: filterRule.Id}) == ftrPassValue { // First CDR with filte
				for _, rsrRule := range cfgCdrFld.Value {
					combinedVal += cdr.FieldAsString(rsrRule)
				}
			}
		}
	}
	return combinedVal, nil
}

// Populates the
func populateStoredCdrField(cdr *engine.StoredCdr, fieldId, fieldVal, timezone string) error {
	var err error
	switch fieldId {
	case utils.TOR:
		cdr.TOR += fieldVal
	case utils.ACCID:
		cdr.AccId += fieldVal
	case utils.REQTYPE:
		cdr.ReqType += fieldVal
	case utils.DIRECTION:
		cdr.Direction += fieldVal
	case utils.TENANT:
		cdr.Tenant += fieldVal
	case utils.CATEGORY:
		cdr.Category += fieldVal
	case utils.ACCOUNT:
		cdr.Account += fieldVal
	case utils.SUBJECT:
		cdr.Subject += fieldVal
	case utils.DESTINATION:
		cdr.Destination += fieldVal
	case utils.RATED_FLD:
		cdr.Rated, _ = strconv.ParseBool(fieldVal)
	case utils.SETUP_TIME:
		if cdr.SetupTime, err = utils.ParseTimeDetectLayout(fieldVal, timezone); err != nil {
			return fmt.Errorf("Cannot parse answer time field with value: %s, err: %s", fieldVal, err.Error())
		}
	case utils.PDD:
		if cdr.Pdd, err = utils.ParseDurationWithSecs(fieldVal); err != nil {
			return fmt.Errorf("Cannot parse answer time field with value: %s, err: %s", fieldVal, err.Error())
		}
	case utils.ANSWER_TIME:
		if cdr.AnswerTime, err = utils.ParseTimeDetectLayout(fieldVal, timezone); err != nil {
			return fmt.Errorf("Cannot parse answer time field with value: %s, err: %s", fieldVal, err.Error())
		}
	case utils.USAGE:
		if cdr.Usage, err = utils.ParseDurationWithSecs(fieldVal); err != nil {
			return fmt.Errorf("Cannot parse duration field with value: %s, err: %s", fieldVal, err.Error())
		}
	case utils.SUPPLIER:
		cdr.Supplier += fieldVal
	case utils.DISCONNECT_CAUSE:
		cdr.DisconnectCause += fieldVal
	case utils.COST:
		if cdr.Cost, err = strconv.ParseFloat(fieldVal, 64); err != nil {
			return fmt.Errorf("Cannot parse cost field with value: %s, err: %s", fieldVal, err.Error())
		}
	default: // Extra fields will not match predefined so they all show up here
		cdr.ExtraFields[fieldId] += fieldVal
	}
	return nil
}

// Converts a record (header or normal) to StoredCdr
func (self *FwvRecordsProcessor) recordToStoredCdr(record string, cfgKey string) (*engine.StoredCdr, error) {
	var err error
	var lazyHttpFields []*config.CfgCdrField
	var cfgFields []*config.CfgCdrField
	var duMultiplyFactor float64
	var storedCdr *engine.StoredCdr
	if self.headerCdr != nil { // Clone the header CDR so we can use it as base to future processing (inherit fields defined there)
		storedCdr = self.headerCdr.Clone()
	} else {
		storedCdr = &engine.StoredCdr{CdrHost: "0.0.0.0", ExtraFields: make(map[string]string), Cost: -1}
	}
	if cfgKey == "*header" {
		cfgFields = self.dfltCfg.HeaderFields
		storedCdr.CdrSource = self.dfltCfg.CdrSourceId
		duMultiplyFactor = self.dfltCfg.DataUsageMultiplyFactor
	} else {
		cfgFields = self.cdrcCfgs[cfgKey].ContentFields
		storedCdr.CdrSource = self.cdrcCfgs[cfgKey].CdrSourceId
		duMultiplyFactor = self.cdrcCfgs[cfgKey].DataUsageMultiplyFactor
	}
	for _, cdrFldCfg := range cfgFields {
		var fieldVal string
		switch cdrFldCfg.Type {
		case utils.CDRFIELD:
			for _, cfgFieldRSR := range cdrFldCfg.Value {
				if cfgFieldRSR.IsStatic() {
					fieldVal += cfgFieldRSR.ParseValue("")
				} else { // Dynamic value extracted using index
					if cfgFieldIdx, _ := strconv.Atoi(cfgFieldRSR.Id); len(record) <= cfgFieldIdx {
						return nil, fmt.Errorf("Ignoring record: %v - cannot extract field %s", record, cdrFldCfg.Tag)
					} else {
						fieldVal += cfgFieldRSR.ParseValue(fwvValue(record, cfgFieldIdx, cdrFldCfg.Width, cdrFldCfg.Padding))
					}
				}
			}
		case utils.HTTP_POST:
			lazyHttpFields = append(lazyHttpFields, cdrFldCfg) // Will process later so we can send an estimation of storedCdr to http server
		default:
			//return nil, fmt.Errorf("Unsupported field type: %s", cdrFldCfg.Type)
			continue // Don't do anything for unsupported fields
		}
		if err := populateStoredCdrField(storedCdr, cdrFldCfg.CdrFieldId, fieldVal, self.timezone); err != nil {
			return nil, err
		}
	}
	if storedCdr.CgrId == "" && storedCdr.AccId != "" && cfgKey != "*header" {
		storedCdr.CgrId = utils.Sha1(storedCdr.AccId, storedCdr.SetupTime.UTC().String())
	}
	if storedCdr.TOR == utils.DATA && duMultiplyFactor != 0 {
		storedCdr.Usage = time.Duration(float64(storedCdr.Usage.Nanoseconds()) * duMultiplyFactor)
	}
	for _, httpFieldCfg := range lazyHttpFields { // Lazy process the http fields
		var outValByte []byte
		var fieldVal, httpAddr string
		for _, rsrFld := range httpFieldCfg.Value {
			httpAddr += rsrFld.ParseValue("")
		}
		if outValByte, err = utils.HttpJsonPost(httpAddr, self.httpSkipTlsCheck, storedCdr); err != nil && httpFieldCfg.Mandatory {
			return nil, err
		} else {
			fieldVal = string(outValByte)
			if len(fieldVal) == 0 && httpFieldCfg.Mandatory {
				return nil, fmt.Errorf("MandatoryIeMissing: Empty result for http_post field: %s", httpFieldCfg.Tag)
			}
			if err := populateStoredCdrField(storedCdr, httpFieldCfg.CdrFieldId, fieldVal, self.timezone); err != nil {
				return nil, err
			}
		}
	}
	return storedCdr, nil
}

func (fsev FSEvent) AsStoredCdr(timezone string) *engine.StoredCdr {
	storCdr := new(engine.StoredCdr)
	storCdr.CgrId = fsev.GetCgrId(timezone)
	storCdr.TOR = utils.VOICE
	storCdr.AccId = fsev.GetUUID()
	storCdr.CdrHost = fsev.GetOriginatorIP(utils.META_DEFAULT)
	storCdr.CdrSource = "FS_" + fsev.GetName()
	storCdr.ReqType = fsev.GetReqType(utils.META_DEFAULT)
	storCdr.Direction = fsev.GetDirection(utils.META_DEFAULT)
	storCdr.Tenant = fsev.GetTenant(utils.META_DEFAULT)
	storCdr.Category = fsev.GetCategory(utils.META_DEFAULT)
	storCdr.Account = fsev.GetAccount(utils.META_DEFAULT)
	storCdr.Subject = fsev.GetSubject(utils.META_DEFAULT)
	storCdr.Destination = fsev.GetDestination(utils.META_DEFAULT)
	storCdr.SetupTime, _ = fsev.GetSetupTime(utils.META_DEFAULT, timezone)
	storCdr.AnswerTime, _ = fsev.GetAnswerTime(utils.META_DEFAULT, timezone)
	storCdr.Usage, _ = fsev.GetDuration(utils.META_DEFAULT)
	storCdr.Pdd, _ = fsev.GetPdd(utils.META_DEFAULT)
	storCdr.ExtraFields = fsev.GetExtraFields()
	storCdr.Cost = -1
	storCdr.Supplier = fsev.GetSupplier(utils.META_DEFAULT)
	storCdr.DisconnectCause = fsev.GetDisconnectCause(utils.META_DEFAULT)
	return storCdr
}

// Write individual cdr into content buffer, build stats
func (cdre *CdrExporter) processCdr(cdr *engine.StoredCdr) error {
	if cdr == nil || len(cdr.CgrId) == 0 { // We do not export empty CDRs
		return nil
	} else if cdr.ExtraFields == nil { // Avoid assignment in nil map if not initialized
		cdr.ExtraFields = make(map[string]string)
	}
	// Cost multiply
	if cdre.dataUsageMultiplyFactor != 0.0 && cdr.TOR == utils.DATA {
		cdr.UsageMultiply(cdre.dataUsageMultiplyFactor, cdre.cgrPrecision)
	} else if cdre.smsUsageMultiplyFactor != 0 && cdr.TOR == utils.SMS {
		cdr.UsageMultiply(cdre.smsUsageMultiplyFactor, cdre.cgrPrecision)
	} else if cdre.genericUsageMultiplyFactor != 0 && cdr.TOR == utils.GENERIC {
		cdr.UsageMultiply(cdre.genericUsageMultiplyFactor, cdre.cgrPrecision)
	}
	if cdre.costMultiplyFactor != 0.0 {
		cdr.CostMultiply(cdre.costMultiplyFactor, cdre.cgrPrecision)
	}
	var err error
	cdrRow := make([]string, len(cdre.exportTemplate.ContentFields))
	for idx, cfgFld := range cdre.exportTemplate.ContentFields {
		var outVal string
		switch cfgFld.Type {
		case utils.FILLER:
			outVal = cfgFld.Value.Id()
			cfgFld.Padding = "right"
		case utils.CONSTANT:
			outVal = cfgFld.Value.Id()
		case utils.CDRFIELD:
			outVal, err = cdre.cdrFieldValue(cdr, cfgFld)
		case DATETIME:
			outVal, err = cdre.getDateTimeFieldVal(cdr, cfgFld)
		case utils.HTTP_POST:
			var outValByte []byte
			httpAddr := cfgFld.Value.Id()
			if len(httpAddr) == 0 {
				err = fmt.Errorf("Empty http address for field %s type %s", cfgFld.Tag, cfgFld.Type)
			} else if outValByte, err = utils.HttpJsonPost(httpAddr, cdre.httpSkipTlsCheck, cdr); err == nil {
				outVal = string(outValByte)
				if len(outVal) == 0 && cfgFld.Mandatory {
					err = fmt.Errorf("Empty result for http_post field: %s", cfgFld.Tag)
				}
			}
		case utils.COMBIMED:
			outVal, err = cdre.getCombimedCdrFieldVal(cdr, cfgFld)
		case utils.METATAG:
			if cfgFld.Value.Id() == META_MASKDESTINATION {
				outVal, err = cdre.metaHandler(cfgFld.Value.Id(), cdr.FieldAsString(&utils.RSRField{Id: utils.DESTINATION}))
			} else {
				outVal, err = cdre.metaHandler(cfgFld.Value.Id(), cfgFld.Layout)
			}
		}
		if err != nil {
			engine.Logger.Err(fmt.Sprintf("<CdreFw> Cannot export CDR with cgrid: %s and runid: %s, error: %s", cdr.CgrId, cdr.MediationRunId, err.Error()))
			return err
		}
		fmtOut := outVal
		if fmtOut, err = FmtFieldWidth(outVal, cfgFld.Width, cfgFld.Strip, cfgFld.Padding, cfgFld.Mandatory); err != nil {
			engine.Logger.Err(fmt.Sprintf("<CdreFw> Cannot export CDR with cgrid: %s, runid: %s, fieldName: %s, fieldValue: %s, error: %s", cdr.CgrId, cdr.MediationRunId, cfgFld.Tag, outVal, err.Error()))
			return err
		}
		cdrRow[idx] += fmtOut
	}
	if len(cdrRow) == 0 { // No CDR data, most likely no configuration fields defined
		return nil
	} else {
		cdre.content = append(cdre.content, cdrRow)
	}
	// Done with writing content, compute stats here
	if cdre.firstCdrATime.IsZero() || cdr.AnswerTime.Before(cdre.firstCdrATime) {
		cdre.firstCdrATime = cdr.AnswerTime
	}
	if cdr.AnswerTime.After(cdre.lastCdrATime) {
		cdre.lastCdrATime = cdr.AnswerTime
	}
	cdre.numberOfRecords += 1
	if cdr.TOR == utils.VOICE { // Only count duration for non data cdrs
		cdre.totalDuration += cdr.Usage
	}
	if cdr.TOR == utils.SMS { // Count usage for SMS
		cdre.totalSmsUsage += cdr.Usage
	}
	if cdr.TOR == utils.GENERIC { // Count usage for GENERIC
		cdre.totalGenericUsage += cdr.Usage
	}
	if cdr.TOR == utils.DATA { // Count usage for DATA
		cdre.totalDataUsage += cdr.Usage
	}
	if cdr.Cost != -1 {
		cdre.totalCost += cdr.Cost
		cdre.totalCost = utils.Round(cdre.totalCost, cdre.roundDecimals, utils.ROUNDING_MIDDLE)
	}
	if cdre.firstExpOrderId > cdr.OrderId || cdre.firstExpOrderId == 0 {
		cdre.firstExpOrderId = cdr.OrderId
	}
	if cdre.lastExpOrderId < cdr.OrderId {
		cdre.lastExpOrderId = cdr.OrderId
	}
	return nil
}

// Extracts the value specified by cfgHdr out of cdr
func (cdre *CdrExporter) cdrFieldValue(cdr *engine.StoredCdr, cfgCdrFld *config.CfgCdrField) (string, error) {
	for _, fltrRl := range cfgCdrFld.FieldFilter {
		if fltrPass, _ := cdr.PassesFieldFilter(fltrRl); !fltrPass {
			return "", fmt.Errorf("Field: %s not matching filter rule %v", fltrRl.Id, fltrRl)
		}
	}
	layout := cfgCdrFld.Layout
	if len(layout) == 0 {
		layout = time.RFC3339
	}
	var retVal string // Concatenate the resulting values
	for _, rsrFld := range cfgCdrFld.Value {
		var cdrVal string
		switch rsrFld.Id {
		case COST_DETAILS: // Special case when we need to further extract cost_details out of logDb
			if cdr.ExtraFields[COST_DETAILS], err = cdre.getCdrCostDetails(cdr.CgrId, cdr.MediationRunId); err != nil {
				return "", err
			} else {
				cdrVal = cdr.FieldAsString(rsrFld)
			}
		case utils.COST:
			cdrVal = cdr.FormatCost(cdre.costShiftDigits, cdre.roundDecimals)
		case utils.USAGE:
			cdrVal = cdr.FormatUsage(layout)
		case utils.SETUP_TIME:
			cdrVal = cdr.SetupTime.Format(layout)
		case utils.ANSWER_TIME: // Format time based on layout
			cdrVal = cdr.AnswerTime.Format(layout)
		case utils.DESTINATION:
			cdrVal = cdr.FieldAsString(rsrFld)
			if cdre.maskLen != -1 && cdre.maskedDestination(cdrVal) {
				cdrVal = MaskDestination(cdrVal, cdre.maskLen)
			}
		default:
			cdrVal = cdr.FieldAsString(rsrFld)
		}
		retVal += cdrVal
	}
	return retVal, nil
}