code refactor

pkg/api/data_managements.go

@@ -20,16 +20,16 @@ const pageCountForDataExport = 1000
 // DataManagementsApi represents data management api
 type DataManagementsApi struct {
 	ApiUsingConfig
-	ezBookKeepingCsvExporter *converters.EzBookKeepingCSVFileConverter
-	ezBookKeepingTsvExporter *converters.EzBookKeepingTSVFileConverter
-	tokens                   *services.TokenService
-	users                    *services.UserService
-	accounts                 *services.AccountService
-	transactions             *services.TransactionService
-	categories               *services.TransactionCategoryService
-	tags                     *services.TransactionTagService
-	pictures                 *services.TransactionPictureService
-	templates                *services.TransactionTemplateService
+	ezBookKeepingCsvConverter converters.TransactionDataConverter
+	ezBookKeepingTsvConverter converters.TransactionDataConverter
+	tokens                    *services.TokenService
+	users                     *services.UserService
+	accounts                  *services.AccountService
+	transactions              *services.TransactionService
+	categories                *services.TransactionCategoryService
+	tags                      *services.TransactionTagService
+	pictures                  *services.TransactionPictureService
+	templates                 *services.TransactionTemplateService
 }
 
 // Initialize a data management api singleton instance
@@ -38,16 +38,16 @@ var (
 		ApiUsingConfig: ApiUsingConfig{
 			container: settings.Container,
 		},
-		ezBookKeepingCsvExporter: &converters.EzBookKeepingCSVFileConverter{},
-		ezBookKeepingTsvExporter: &converters.EzBookKeepingTSVFileConverter{},
-		tokens:                   services.Tokens,
-		users:                    services.Users,
-		accounts:                 services.Accounts,
-		transactions:             services.Transactions,
-		categories:               services.TransactionCategories,
-		tags:                     services.TransactionTags,
-		pictures:                 services.TransactionPictures,
-		templates:                services.TransactionTemplates,
+		ezBookKeepingCsvConverter: converters.EzBookKeepingTransactionDataCSVFileConverter,
+		ezBookKeepingTsvConverter: converters.EzBookKeepingTransactionDataTSVFileConverter,
+		tokens:                    services.Tokens,
+		users:                     services.Users,
+		accounts:                  services.Accounts,
+		transactions:              services.Transactions,
+		categories:                services.TransactionCategories,
+		tags:                      services.TransactionTags,
+		pictures:                  services.TransactionPictures,
+		templates:                 services.TransactionTemplates,
 	}
 )
 
@@ -247,12 +247,12 @@ func (a *DataManagementsApi) getExportedFileContent(c *core.WebContext, fileType
 		return nil, "", errs.ErrOperationFailed
 	}
 
-	var dataExporter converters.DataConverter
+	var dataExporter converters.TransactionDataExporter
 
 	if fileType == "tsv" {
-		dataExporter = a.ezBookKeepingTsvExporter
+		dataExporter = a.ezBookKeepingTsvConverter
 	} else {
-		dataExporter = a.ezBookKeepingCsvExporter
+		dataExporter = a.ezBookKeepingCsvConverter
 	}
 
 	result, err := dataExporter.ToExportedContent(uid, allTransactions, accountMap, categoryMap, tagMap, tagIndexes)

pkg/cli/user_data.go

@@ -20,16 +20,16 @@ const pageCountForDataExport = 1000
 // UserDataCli represents user data cli
 type UserDataCli struct {
 	CliUsingConfig
-	ezBookKeepingCsvExporter *converters.EzBookKeepingCSVFileConverter
-	ezBookKeepingTsvExporter *converters.EzBookKeepingTSVFileConverter
-	accounts                 *services.AccountService
-	transactions             *services.TransactionService
-	categories               *services.TransactionCategoryService
-	tags                     *services.TransactionTagService
-	users                    *services.UserService
-	twoFactorAuthorizations  *services.TwoFactorAuthorizationService
-	tokens                   *services.TokenService
-	forgetPasswords          *services.ForgetPasswordService
+	ezBookKeepingCsvConverter converters.TransactionDataConverter
+	ezBookKeepingTsvConverter converters.TransactionDataConverter
+	accounts                  *services.AccountService
+	transactions              *services.TransactionService
+	categories                *services.TransactionCategoryService
+	tags                      *services.TransactionTagService
+	users                     *services.UserService
+	twoFactorAuthorizations   *services.TwoFactorAuthorizationService
+	tokens                    *services.TokenService
+	forgetPasswords           *services.ForgetPasswordService
 }
 
 // Initialize an user data cli singleton instance
@@ -38,16 +38,16 @@ var (
 		CliUsingConfig: CliUsingConfig{
 			container: settings.Container,
 		},
-		ezBookKeepingCsvExporter: &converters.EzBookKeepingCSVFileConverter{},
-		ezBookKeepingTsvExporter: &converters.EzBookKeepingTSVFileConverter{},
-		accounts:                 services.Accounts,
-		transactions:             services.Transactions,
-		categories:               services.TransactionCategories,
-		tags:                     services.TransactionTags,
-		users:                    services.Users,
-		twoFactorAuthorizations:  services.TwoFactorAuthorizations,
-		tokens:                   services.Tokens,
-		forgetPasswords:          services.ForgetPasswords,
+		ezBookKeepingCsvConverter: converters.EzBookKeepingTransactionDataCSVFileConverter,
+		ezBookKeepingTsvConverter: converters.EzBookKeepingTransactionDataTSVFileConverter,
+		accounts:                  services.Accounts,
+		transactions:              services.Transactions,
+		categories:                services.TransactionCategories,
+		tags:                      services.TransactionTags,
+		users:                     services.Users,
+		twoFactorAuthorizations:   services.TwoFactorAuthorizations,
+		tokens:                    services.Tokens,
+		forgetPasswords:           services.ForgetPasswords,
 	}
 )
 
@@ -645,12 +645,12 @@ func (l *UserDataCli) ExportTransaction(c *core.CliContext, username string, fil
 		return nil, err
 	}
 
-	var dataExporter converters.DataConverter
+	var dataExporter converters.TransactionDataExporter
 
 	if fileType == "tsv" {
-		dataExporter = l.ezBookKeepingTsvExporter
+		dataExporter = l.ezBookKeepingTsvConverter
 	} else {
-		dataExporter = l.ezBookKeepingCsvExporter
+		dataExporter = l.ezBookKeepingCsvConverter
 	}
 
 	result, err := dataExporter.ToExportedContent(uid, allTransactions, accountMap, categoryMap, tagMap, tagIndexesMap)
@@ -669,12 +669,12 @@ func (l *UserDataCli) ImportTransaction(c *core.CliContext, username string, fil
 		return errs.ErrUsernameIsEmpty
 	}
 
-	var dataImporter converters.DataConverter
+	var dataImporter converters.TransactionDataImporter
 
 	if fileType == "ezbookkeeping_csv" {
-		dataImporter = l.ezBookKeepingCsvExporter
+		dataImporter = l.ezBookKeepingCsvConverter
 	} else if fileType == "ezbookkeeping_tsv" {
-		dataImporter = l.ezBookKeepingTsvExporter
+		dataImporter = l.ezBookKeepingTsvConverter
 	} else {
 		return errs.ErrImportFileTypeNotSupported
 	}

pkg/converters/data_table.go

@@ -0,0 +1,37 @@
+package converters
+
+// ImportedDataTable defines the structure of imported data table
+type ImportedDataTable interface {
+	// DataRowCount returns the total count of data row
+	DataRowCount() int
+
+	// HeaderLineColumnNames returns the header column name list
+	HeaderLineColumnNames() []string
+
+	// DataRowIterator returns the iterator of data row
+	DataRowIterator() ImportedDataRowIterator
+}
+
+// ImportedDataRow defines the structure of imported data row
+type ImportedDataRow interface {
+	// ColumnCount returns the total count of column in this data row
+	ColumnCount() int
+
+	// GetData returns the data in the specified column index
+	GetData(columnIndex int) string
+}
+
+// ImportedDataRowIterator defines the structure of imported data row iterator
+type ImportedDataRowIterator interface {
+	// HasNext returns whether the iterator does not reach the end
+	HasNext() bool
+
+	// Next returns the next imported data row
+	Next() ImportedDataRow
+}
+
+// DataTableBuilder defines the structure of data table builder
+type DataTableBuilder interface {
+	// AppendTransaction appends the specified transaction to data builder
+	AppendTransaction(data map[DataTableColumn]string)
+}

pkg/converters/data_table_transaction_data_converter.go

@@ -0,0 +1,493 @@
+package converters
+
+import (
+	"fmt"
+	"sort"
+	"strings"
+	"time"
+
+	"github.com/mayswind/ezbookkeeping/pkg/errs"
+	"github.com/mayswind/ezbookkeeping/pkg/models"
+	"github.com/mayswind/ezbookkeeping/pkg/utils"
+	"github.com/mayswind/ezbookkeeping/pkg/validators"
+)
+
+// DataTableColumn represents the data column type of data table
+type DataTableColumn byte
+
+// Data table columns
+const (
+	DATA_TABLE_TRANSACTION_TIME         DataTableColumn = 1
+	DATA_TABLE_TRANSACTION_TIMEZONE     DataTableColumn = 2
+	DATA_TABLE_TRANSACTION_TYPE         DataTableColumn = 3
+	DATA_TABLE_CATEGORY                 DataTableColumn = 4
+	DATA_TABLE_SUB_CATEGORY             DataTableColumn = 5
+	DATA_TABLE_ACCOUNT_NAME             DataTableColumn = 6
+	DATA_TABLE_ACCOUNT_CURRENCY         DataTableColumn = 7
+	DATA_TABLE_AMOUNT                   DataTableColumn = 8
+	DATA_TABLE_RELATED_ACCOUNT_NAME     DataTableColumn = 9
+	DATA_TABLE_RELATED_ACCOUNT_CURRENCY DataTableColumn = 10
+	DATA_TABLE_RELATED_AMOUNT           DataTableColumn = 11
+	DATA_TABLE_GEOGRAPHIC_LOCATION      DataTableColumn = 12
+	DATA_TABLE_TAGS                     DataTableColumn = 13
+	DATA_TABLE_DESCRIPTION              DataTableColumn = 14
+)
+
+// DataTableTransactionDataConverter defines the structure of data table importer for transaction data
+type DataTableTransactionDataConverter struct {
+	dataColumnMapping          map[DataTableColumn]string
+	transactionTypeMapping     map[models.TransactionDbType]string
+	transactionTypeNameMapping map[string]models.TransactionDbType
+	columnSeparator            string
+	lineSeparator              string
+	geoLocationSeparator       string
+	transactionTagSeparator    string
+}
+
+func (c *DataTableTransactionDataConverter) buildExportedContent(dataTableBuilder DataTableBuilder, uid int64, transactions []*models.Transaction, accountMap map[int64]*models.Account, categoryMap map[int64]*models.TransactionCategory, tagMap map[int64]*models.TransactionTag, allTagIndexes map[int64][]int64) error {
+	for i := 0; i < len(transactions); i++ {
+		transaction := transactions[i]
+
+		if transaction.Type == models.TRANSACTION_DB_TYPE_TRANSFER_IN {
+			continue
+		}
+
+		dataRowMap := make(map[DataTableColumn]string, 15)
+		transactionTimeZone := time.FixedZone("Transaction Timezone", int(transaction.TimezoneUtcOffset)*60)
+
+		dataRowMap[DATA_TABLE_TRANSACTION_TIME] = utils.FormatUnixTimeToLongDateTime(utils.GetUnixTimeFromTransactionTime(transaction.TransactionTime), transactionTimeZone)
+		dataRowMap[DATA_TABLE_TRANSACTION_TIMEZONE] = utils.FormatTimezoneOffset(transactionTimeZone)
+		dataRowMap[DATA_TABLE_TRANSACTION_TYPE] = c.replaceDelimiters(c.getDisplayTransactionTypeName(transaction.Type))
+		dataRowMap[DATA_TABLE_CATEGORY] = c.getExportedTransactionCategoryName(transaction.CategoryId, categoryMap)
+		dataRowMap[DATA_TABLE_SUB_CATEGORY] = c.getExportedTransactionSubCategoryName(transaction.CategoryId, categoryMap)
+		dataRowMap[DATA_TABLE_ACCOUNT_NAME] = c.getExportedAccountName(transaction.AccountId, accountMap)
+		dataRowMap[DATA_TABLE_ACCOUNT_CURRENCY] = c.getAccountCurrency(transaction.AccountId, accountMap)
+		dataRowMap[DATA_TABLE_AMOUNT] = utils.FormatAmount(transaction.Amount)
+
+		if transaction.Type == models.TRANSACTION_DB_TYPE_TRANSFER_OUT {
+			dataRowMap[DATA_TABLE_RELATED_ACCOUNT_NAME] = c.getExportedAccountName(transaction.RelatedAccountId, accountMap)
+			dataRowMap[DATA_TABLE_RELATED_ACCOUNT_CURRENCY] = c.getAccountCurrency(transaction.RelatedAccountId, accountMap)
+			dataRowMap[DATA_TABLE_RELATED_AMOUNT] = utils.FormatAmount(transaction.RelatedAccountAmount)
+		}
+
+		dataRowMap[DATA_TABLE_GEOGRAPHIC_LOCATION] = c.getExportedGeographicLocation(transaction)
+		dataRowMap[DATA_TABLE_TAGS] = c.getExportedTags(transaction.TransactionId, allTagIndexes, tagMap)
+		dataRowMap[DATA_TABLE_DESCRIPTION] = c.replaceDelimiters(transaction.Comment)
+
+		dataTableBuilder.AppendTransaction(dataRowMap)
+	}
+
+	return nil
+}
+
+func (c *DataTableTransactionDataConverter) parseImportedData(user *models.User, dataTable ImportedDataTable, defaultTimezoneOffset int16, accountMap map[string]*models.Account, categoryMap map[string]*models.TransactionCategory, tagMap map[string]*models.TransactionTag) ([]*models.Transaction, []*models.Account, []*models.TransactionCategory, []*models.TransactionTag, error) {
+	if dataTable.DataRowCount() < 1 {
+		return nil, nil, nil, nil, errs.ErrOperationFailed
+	}
+
+	headerLineItems := dataTable.HeaderLineColumnNames()
+	headerItemMap := make(map[string]int)
+
+	for i := 0; i < len(headerLineItems); i++ {
+		headerItemMap[headerLineItems[i]] = i
+	}
+
+	timeColumnIdx, timeColumnExists := headerItemMap[c.dataColumnMapping[DATA_TABLE_TRANSACTION_TIME]]
+	timezoneColumnIdx, timezoneColumnExists := headerItemMap[c.dataColumnMapping[DATA_TABLE_TRANSACTION_TIMEZONE]]
+	typeColumnIdx, typeColumnExists := headerItemMap[c.dataColumnMapping[DATA_TABLE_TRANSACTION_TYPE]]
+	subCategoryColumnIdx, subCategoryColumnExists := headerItemMap[c.dataColumnMapping[DATA_TABLE_SUB_CATEGORY]]
+	accountColumnIdx, accountColumnExists := headerItemMap[c.dataColumnMapping[DATA_TABLE_ACCOUNT_NAME]]
+	accountCurrencyColumnIdx, accountCurrencyColumnExists := headerItemMap[c.dataColumnMapping[DATA_TABLE_ACCOUNT_CURRENCY]]
+	amountColumnIdx, amountColumnExists := headerItemMap[c.dataColumnMapping[DATA_TABLE_AMOUNT]]
+	account2ColumnIdx, account2ColumnExists := headerItemMap[c.dataColumnMapping[DATA_TABLE_RELATED_ACCOUNT_NAME]]
+	account2CurrencyColumnIdx, account2CurrencyColumnExists := headerItemMap[c.dataColumnMapping[DATA_TABLE_RELATED_ACCOUNT_CURRENCY]]
+	amount2ColumnIdx, amount2ColumnExists := headerItemMap[c.dataColumnMapping[DATA_TABLE_RELATED_AMOUNT]]
+	geoLocationIdx, geoLocationExists := headerItemMap[c.dataColumnMapping[DATA_TABLE_GEOGRAPHIC_LOCATION]]
+	tagsColumnIdx, tagsColumnExists := headerItemMap[c.dataColumnMapping[DATA_TABLE_TAGS]]
+	descriptionColumnIdx, descriptionColumnExists := headerItemMap[c.dataColumnMapping[DATA_TABLE_DESCRIPTION]]
+
+	if !timeColumnExists || !typeColumnExists || !subCategoryColumnExists ||
+		!accountColumnExists || !amountColumnExists || !account2ColumnExists || !amount2ColumnExists {
+		return nil, nil, nil, nil, errs.ErrFormatInvalid
+	}
+
+	if accountMap == nil {
+		accountMap = make(map[string]*models.Account)
+	}
+
+	if categoryMap == nil {
+		categoryMap = make(map[string]*models.TransactionCategory)
+	}
+
+	if tagMap == nil {
+		tagMap = make(map[string]*models.TransactionTag)
+	}
+
+	allNewTransactions := make(ImportedTransactionSlice, 0, dataTable.DataRowCount())
+	allNewAccounts := make([]*models.Account, 0)
+	allNewSubCategories := make([]*models.TransactionCategory, 0)
+	allNewTags := make([]*models.TransactionTag, 0)
+
+	dataRowIterator := dataTable.DataRowIterator()
+
+	for dataRowIterator.HasNext() {
+		dataRow := dataRowIterator.Next()
+		columnCount := dataRow.ColumnCount()
+
+		if columnCount < 1 {
+			continue
+		}
+
+		if columnCount < len(headerLineItems) {
+			return nil, nil, nil, nil, errs.ErrFormatInvalid
+		}
+
+		timezoneOffset := defaultTimezoneOffset
+
+		if timezoneColumnExists {
+			transactionTimezone, err := utils.ParseFromTimezoneOffset(dataRow.GetData(timezoneColumnIdx))
+
+			if err != nil {
+				return nil, nil, nil, nil, err
+			}
+
+			timezoneOffset = utils.GetTimezoneOffsetMinutes(transactionTimezone)
+		}
+
+		transactionTime, err := utils.ParseFromLongDateTime(dataRow.GetData(timeColumnIdx), timezoneOffset)
+
+		if err != nil {
+			return nil, nil, nil, nil, err
+		}
+
+		transactionDbType, err := c.getTransactionDbType(dataRow.GetData(typeColumnIdx))
+
+		if err != nil {
+			return nil, nil, nil, nil, err
+		}
+
+		categoryId := int64(0)
+
+		if transactionDbType != models.TRANSACTION_DB_TYPE_MODIFY_BALANCE {
+			transactionCategoryType, err := c.getTransactionCategoryType(transactionDbType)
+
+			if err != nil {
+				return nil, nil, nil, nil, err
+			}
+
+			subCategoryName := dataRow.GetData(subCategoryColumnIdx)
+
+			if subCategoryName == "" {
+				return nil, nil, nil, nil, errs.ErrFormatInvalid
+			}
+
+			subCategory, exists := categoryMap[subCategoryName]
+
+			if !exists {
+				subCategory = c.createNewTransactionCategoryModel(user.Uid, subCategoryName, transactionCategoryType)
+				allNewSubCategories = append(allNewSubCategories, subCategory)
+				categoryMap[subCategoryName] = subCategory
+			}
+
+			categoryId = subCategory.CategoryId
+		}
+
+		accountName := dataRow.GetData(accountColumnIdx)
+
+		if accountName == "" {
+			return nil, nil, nil, nil, errs.ErrFormatInvalid
+		}
+
+		account, exists := accountMap[accountName]
+
+		if !exists {
+			currency := user.DefaultCurrency
+
+			if accountCurrencyColumnExists {
+				currency = dataRow.GetData(accountCurrencyColumnIdx)
+
+				if _, ok := validators.AllCurrencyNames[currency]; !ok {
+					return nil, nil, nil, nil, errs.ErrAccountCurrencyInvalid
+				}
+			}
+
+			account = c.createNewAccountModel(user.Uid, accountName, currency)
+			allNewAccounts = append(allNewAccounts, account)
+			accountMap[accountName] = account
+		}
+
+		if accountCurrencyColumnExists {
+			if account.Currency != dataRow.GetData(accountCurrencyColumnIdx) {
+				return nil, nil, nil, nil, errs.ErrAccountCurrencyInvalid
+			}
+		}
+
+		amount, err := utils.ParseAmount(dataRow.GetData(amountColumnIdx))
+
+		if err != nil {
+			return nil, nil, nil, nil, err
+		}
+
+		relatedAccountId := int64(0)
+		relatedAccountAmount := int64(0)
+
+		if transactionDbType == models.TRANSACTION_DB_TYPE_TRANSFER_OUT {
+			account2Name := dataRow.GetData(account2ColumnIdx)
+
+			if account2Name == "" {
+				return nil, nil, nil, nil, errs.ErrFormatInvalid
+			}
+
+			account2, exists := accountMap[account2Name]
+
+			if !exists {
+				currency := user.DefaultCurrency
+
+				if accountCurrencyColumnExists {
+					currency = dataRow.GetData(account2CurrencyColumnIdx)
+
+					if _, ok := validators.AllCurrencyNames[currency]; !ok {
+						return nil, nil, nil, nil, errs.ErrAccountCurrencyInvalid
+					}
+				}
+
+				account2 = c.createNewAccountModel(user.Uid, account2Name, currency)
+				allNewAccounts = append(allNewAccounts, account2)
+				accountMap[account2Name] = account2
+			}
+
+			if account2CurrencyColumnExists {
+				if account2.Currency != dataRow.GetData(account2CurrencyColumnIdx) {
+					return nil, nil, nil, nil, errs.ErrAccountCurrencyInvalid
+				}
+			}
+
+			relatedAccountId = account2.AccountId
+			relatedAccountAmount, err = utils.ParseAmount(dataRow.GetData(amount2ColumnIdx))
+
+			if err != nil {
+				return nil, nil, nil, nil, err
+			}
+		}
+
+		geoLongitude := float64(0)
+		geoLatitude := float64(0)
+
+		if geoLocationExists {
+			geoLocationItems := strings.Split(dataRow.GetData(geoLocationIdx), c.geoLocationSeparator)
+
+			if len(geoLocationItems) == 2 {
+				geoLongitude, err = utils.StringToFloat64(geoLocationItems[0])
+
+				if err != nil {
+					return nil, nil, nil, nil, err
+				}
+
+				geoLatitude, err = utils.StringToFloat64(geoLocationItems[1])
+
+				if err != nil {
+					return nil, nil, nil, nil, err
+				}
+			}
+		}
+
+		if tagsColumnExists {
+			tagNames := strings.Split(dataRow.GetData(tagsColumnIdx), c.transactionTagSeparator)
+
+			for i := 0; i < len(tagNames); i++ {
+				tagName := tagNames[i]
+
+				if tagName == "" {
+					continue
+				}
+
+				tag, exists := tagMap[tagName]
+
+				if !exists {
+					tag = c.createNewTransactionTagModel(user.Uid, tagName)
+					allNewTags = append(allNewTags, tag)
+					tagMap[tagName] = tag
+				}
+			}
+		}
+
+		description := ""
+
+		if descriptionColumnExists {
+			description = dataRow.GetData(descriptionColumnIdx)
+		}
+
+		transaction := &models.Transaction{
+			Uid:                  user.Uid,
+			Type:                 transactionDbType,
+			CategoryId:           categoryId,
+			TransactionTime:      utils.GetMinTransactionTimeFromUnixTime(transactionTime.Unix()),
+			TimezoneUtcOffset:    timezoneOffset,
+			AccountId:            account.AccountId,
+			Amount:               amount,
+			HideAmount:           false,
+			RelatedAccountId:     relatedAccountId,
+			RelatedAccountAmount: relatedAccountAmount,
+			Comment:              description,
+			GeoLongitude:         geoLongitude,
+			GeoLatitude:          geoLatitude,
+			CreatedIp:            "127.0.0.1",
+		}
+
+		allNewTransactions = append(allNewTransactions, transaction)
+	}
+
+	sort.Sort(allNewTransactions)
+
+	return allNewTransactions, allNewAccounts, allNewSubCategories, allNewTags, nil
+}
+
+func (c *DataTableTransactionDataConverter) getTransactionDbType(transactionTypeName string) (models.TransactionDbType, error) {
+	transactionType, exists := c.transactionTypeNameMapping[transactionTypeName]
+
+	if !exists {
+		return 0, errs.ErrTransactionTypeInvalid
+	}
+
+	return transactionType, nil
+}
+
+func (c *DataTableTransactionDataConverter) getTransactionCategoryType(transactionType models.TransactionDbType) (models.TransactionCategoryType, error) {
+	if transactionType == models.TRANSACTION_DB_TYPE_INCOME {
+		return models.CATEGORY_TYPE_INCOME, nil
+	} else if transactionType == models.TRANSACTION_DB_TYPE_EXPENSE {
+		return models.CATEGORY_TYPE_EXPENSE, nil
+	} else if transactionType == models.TRANSACTION_DB_TYPE_TRANSFER_OUT {
+		return models.CATEGORY_TYPE_TRANSFER, nil
+	} else {
+		return 0, errs.ErrTransactionTypeInvalid
+	}
+}
+
+func (c *DataTableTransactionDataConverter) getDisplayTransactionTypeName(transactionDbType models.TransactionDbType) string {
+	transactionTypeName, exists := c.transactionTypeMapping[transactionDbType]
+
+	if !exists {
+		return ""
+	}
+
+	return transactionTypeName
+}
+
+func (c *DataTableTransactionDataConverter) getExportedTransactionCategoryName(categoryId int64, categoryMap map[int64]*models.TransactionCategory) string {
+	category, exists := categoryMap[categoryId]
+
+	if !exists {
+		return ""
+	}
+
+	if category.ParentCategoryId == 0 {
+		return c.replaceDelimiters(category.Name)
+	}
+
+	parentCategory, exists := categoryMap[category.ParentCategoryId]
+
+	if !exists {
+		return ""
+	}
+
+	return c.replaceDelimiters(parentCategory.Name)
+}
+
+func (c *DataTableTransactionDataConverter) getExportedTransactionSubCategoryName(categoryId int64, categoryMap map[int64]*models.TransactionCategory) string {
+	category, exists := categoryMap[categoryId]
+
+	if exists {
+		return c.replaceDelimiters(category.Name)
+	} else {
+		return ""
+	}
+}
+
+func (c *DataTableTransactionDataConverter) getExportedAccountName(accountId int64, accountMap map[int64]*models.Account) string {
+	account, exists := accountMap[accountId]
+
+	if exists {
+		return c.replaceDelimiters(account.Name)
+	} else {
+		return ""
+	}
+}
+
+func (c *DataTableTransactionDataConverter) getAccountCurrency(accountId int64, accountMap map[int64]*models.Account) string {
+	account, exists := accountMap[accountId]
+
+	if exists {
+		return c.replaceDelimiters(account.Currency)
+	} else {
+		return ""
+	}
+}
+
+func (c *DataTableTransactionDataConverter) getExportedGeographicLocation(transaction *models.Transaction) string {
+	if transaction.GeoLongitude != 0 || transaction.GeoLatitude != 0 {
+		return fmt.Sprintf("%f%s%f", transaction.GeoLongitude, c.geoLocationSeparator, transaction.GeoLatitude)
+	}
+
+	return ""
+}
+
+func (c *DataTableTransactionDataConverter) getExportedTags(transactionId int64, allTagIndexes map[int64][]int64, tagMap map[int64]*models.TransactionTag) string {
+	tagIndexes, exists := allTagIndexes[transactionId]
+
+	if !exists {
+		return ""
+	}
+
+	var ret strings.Builder
+
+	for i := 0; i < len(tagIndexes); i++ {
+		tagIndex := tagIndexes[i]
+		tag, exists := tagMap[tagIndex]
+
+		if !exists {
+			continue
+		}
+
+		if ret.Len() > 0 {
+			ret.WriteString(c.transactionTagSeparator)
+		}
+
+		ret.WriteString(strings.Replace(tag.Name, c.transactionTagSeparator, " ", -1))
+	}
+
+	return c.replaceDelimiters(ret.String())
+}
+
+func (c *DataTableTransactionDataConverter) replaceDelimiters(text string) string {
+	text = strings.Replace(text, "\r\n", " ", -1)
+	text = strings.Replace(text, "\r", " ", -1)
+	text = strings.Replace(text, "\n", " ", -1)
+	text = strings.Replace(text, c.columnSeparator, " ", -1)
+	text = strings.Replace(text, c.lineSeparator, " ", -1)
+
+	return text
+}
+
+func (c *DataTableTransactionDataConverter) createNewAccountModel(uid int64, accountName string, currency string) *models.Account {
+	return &models.Account{
+		Uid:      uid,
+		Name:     accountName,
+		Currency: currency,
+	}
+}
+
+func (c *DataTableTransactionDataConverter) createNewTransactionCategoryModel(uid int64, categoryName string, transactionCategoryType models.TransactionCategoryType) *models.TransactionCategory {
+	return &models.TransactionCategory{
+		Uid:  uid,
+		Name: categoryName,
+		Type: transactionCategoryType,
+	}
+}
+
+func (c *DataTableTransactionDataConverter) createNewTransactionTagModel(uid int64, tagName string) *models.TransactionTag {
+	return &models.TransactionTag{
+		Uid:  uid,
+		Name: tagName,
+	}
+}

pkg/converters/ezbookkeeping_csv_file.go

@@ -1,22 +0,0 @@
-package converters
-
-import (
-	"github.com/mayswind/ezbookkeeping/pkg/models"
-)
-
-// EzBookKeepingCSVFileConverter defines the structure of CSV file converter
-type EzBookKeepingCSVFileConverter struct {
-	EzBookKeepingPlainFileConverter
-}
-
-const csvSeparator = ","
-
-// ToExportedContent returns the exported CSV data
-func (e *EzBookKeepingCSVFileConverter) ToExportedContent(uid int64, transactions []*models.Transaction, accountMap map[int64]*models.Account, categoryMap map[int64]*models.TransactionCategory, tagMap map[int64]*models.TransactionTag, allTagIndexes map[int64][]int64) ([]byte, error) {
-	return e.toExportedContent(uid, csvSeparator, transactions, accountMap, categoryMap, tagMap, allTagIndexes)
-}
-
-// ParseImportedData parses transactions of ezbookkeeping CSV data
-func (e *EzBookKeepingCSVFileConverter) ParseImportedData(user *models.User, data []byte, defaultTimezoneOffset int16, accountMap map[string]*models.Account, categoryMap map[string]*models.TransactionCategory, tagMap map[string]*models.TransactionTag) ([]*models.Transaction, []*models.Account, []*models.TransactionCategory, []*models.TransactionTag, error) {
-	return e.parseImportedData(user, csvSeparator, data, defaultTimezoneOffset, accountMap, categoryMap, tagMap)
-}

pkg/converters/ezbookkeeping_plain_file.go

@@ -1,491 +0,0 @@
-package converters
-
-import (
-	"fmt"
-	"sort"
-	"strings"
-	"time"
-
-	"github.com/mayswind/ezbookkeeping/pkg/errs"
-	"github.com/mayswind/ezbookkeeping/pkg/models"
-	"github.com/mayswind/ezbookkeeping/pkg/utils"
-	"github.com/mayswind/ezbookkeeping/pkg/validators"
-)
-
-// EzBookKeepingPlainFileConverter defines the structure of plain file converter
-type EzBookKeepingPlainFileConverter struct {
-}
-
-const lineSeparator = "\n"
-const geoLocationSeparator = " "
-const transactionTagSeparator = ";"
-const headerLine = "Time,Timezone,Type,Category,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description" + lineSeparator
-const dataLineFormat = "%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s" + lineSeparator
-
-// toExportedContent returns the exported plain data
-func (e *EzBookKeepingPlainFileConverter) toExportedContent(uid int64, separator string, transactions []*models.Transaction, accountMap map[int64]*models.Account, categoryMap map[int64]*models.TransactionCategory, tagMap map[int64]*models.TransactionTag, allTagIndexes map[int64][]int64) ([]byte, error) {
-	var ret strings.Builder
-
-	ret.Grow(len(transactions) * 100)
-
-	actualHeaderLine := headerLine
-	actualDataLineFormat := dataLineFormat
-
-	if separator != "," {
-		actualHeaderLine = strings.Replace(headerLine, ",", separator, -1)
-		actualDataLineFormat = strings.Replace(dataLineFormat, ",", separator, -1)
-	}
-
-	ret.WriteString(actualHeaderLine)
-
-	for i := 0; i < len(transactions); i++ {
-		transaction := transactions[i]
-
-		if transaction.Type == models.TRANSACTION_DB_TYPE_TRANSFER_IN {
-			continue
-		}
-
-		transactionTimeZone := time.FixedZone("Transaction Timezone", int(transaction.TimezoneUtcOffset)*60)
-		transactionTime := utils.FormatUnixTimeToLongDateTime(utils.GetUnixTimeFromTransactionTime(transaction.TransactionTime), transactionTimeZone)
-		transactionTimezone := utils.FormatTimezoneOffset(transactionTimeZone)
-		transactionType := e.getTransactionTypeName(transaction.Type)
-		category := e.replaceDelimiters(e.getTransactionCategoryName(transaction.CategoryId, categoryMap), separator)
-		subCategory := e.replaceDelimiters(e.getTransactionSubCategoryName(transaction.CategoryId, categoryMap), separator)
-		account := e.replaceDelimiters(e.getAccountName(transaction.AccountId, accountMap), separator)
-		accountCurrency := e.getAccountCurrency(transaction.AccountId, accountMap)
-		amount := utils.FormatAmount(transaction.Amount)
-		account2 := ""
-		account2Currency := ""
-		account2Amount := ""
-		geoLocation := ""
-
-		if transaction.Type == models.TRANSACTION_DB_TYPE_TRANSFER_OUT {
-			account2 = e.replaceDelimiters(e.getAccountName(transaction.RelatedAccountId, accountMap), separator)
-			account2Currency = e.getAccountCurrency(transaction.RelatedAccountId, accountMap)
-			account2Amount = utils.FormatAmount(transaction.RelatedAccountAmount)
-		}
-
-		if transaction.GeoLongitude != 0 || transaction.GeoLatitude != 0 {
-			geoLocation = fmt.Sprintf("%f%s%f", transaction.GeoLongitude, geoLocationSeparator, transaction.GeoLatitude)
-		}
-
-		tags := e.replaceDelimiters(e.getTags(transaction.TransactionId, allTagIndexes, tagMap), separator)
-		comment := e.replaceDelimiters(transaction.Comment, separator)
-
-		ret.WriteString(fmt.Sprintf(actualDataLineFormat, transactionTime, transactionTimezone, transactionType, category, subCategory, account, accountCurrency, amount, account2, account2Currency, account2Amount, geoLocation, tags, comment))
-	}
-
-	return []byte(ret.String()), nil
-}
-
-func (e *EzBookKeepingPlainFileConverter) parseImportedData(user *models.User, separator string, data []byte, defaultTimezoneOffset int16, accountMap map[string]*models.Account, categoryMap map[string]*models.TransactionCategory, tagMap map[string]*models.TransactionTag) ([]*models.Transaction, []*models.Account, []*models.TransactionCategory, []*models.TransactionTag, error) {
-	lines := strings.Split(string(data), lineSeparator)
-
-	if len(lines) < 2 {
-		return nil, nil, nil, nil, errs.ErrOperationFailed
-	}
-
-	headerLineItems := strings.Split(lines[0], separator)
-	headerItemMap := make(map[string]int)
-
-	for i := 0; i < len(headerLineItems); i++ {
-		headerItemMap[headerLineItems[i]] = i
-	}
-
-	timeColumnIdx, timeColumnExists := headerItemMap["Time"]
-	timezoneColumnIdx, timezoneColumnExists := headerItemMap["Timezone"]
-	typeColumnIdx, typeColumnExists := headerItemMap["Type"]
-	subCategoryColumnIdx, subCategoryColumnExists := headerItemMap["Sub Category"]
-	accountColumnIdx, accountColumnExists := headerItemMap["Account"]
-	accountCurrencyColumnIdx, accountCurrencyColumnExists := headerItemMap["Account Currency"]
-	amountColumnIdx, amountColumnExists := headerItemMap["Amount"]
-	account2ColumnIdx, account2ColumnExists := headerItemMap["Account2"]
-	account2CurrencyColumnIdx, account2CurrencyColumnExists := headerItemMap["Account2 Currency"]
-	amount2ColumnIdx, amount2ColumnExists := headerItemMap["Account2 Amount"]
-	geoLocationIdx, geoLocationExists := headerItemMap["Geographic Location"]
-	tagsColumnIdx, tagsColumnExists := headerItemMap["Tags"]
-	descriptionColumnIdx, descriptionColumnExists := headerItemMap["Description"]
-
-	if !timeColumnExists || !typeColumnExists || !subCategoryColumnExists ||
-		!accountColumnExists || !amountColumnExists || !account2ColumnExists || !amount2ColumnExists {
-		return nil, nil, nil, nil, errs.ErrFormatInvalid
-	}
-
-	if accountMap == nil {
-		accountMap = make(map[string]*models.Account)
-	}
-
-	if categoryMap == nil {
-		categoryMap = make(map[string]*models.TransactionCategory)
-	}
-
-	if tagMap == nil {
-		tagMap = make(map[string]*models.TransactionTag)
-	}
-
-	allNewTransactions := make(ImportTransactionSlice, 0, len(lines))
-	allNewAccounts := make([]*models.Account, 0)
-	allNewSubCategories := make([]*models.TransactionCategory, 0)
-	allNewTags := make([]*models.TransactionTag, 0)
-
-	for i := 1; i < len(lines); i++ {
-		line := lines[i]
-
-		if len(line) < 1 {
-			continue
-		}
-
-		lineItems := strings.Split(line, separator)
-
-		if len(lineItems) < len(headerLineItems) {
-			return nil, nil, nil, nil, errs.ErrFormatInvalid
-		}
-
-		timezoneOffset := defaultTimezoneOffset
-
-		if timezoneColumnExists {
-			transactionTimezone, err := utils.ParseFromTimezoneOffset(lineItems[timezoneColumnIdx])
-
-			if err != nil {
-				return nil, nil, nil, nil, err
-			}
-
-			timezoneOffset = utils.GetTimezoneOffsetMinutes(transactionTimezone)
-		}
-
-		transactionTime, err := utils.ParseFromLongDateTime(lineItems[timeColumnIdx], timezoneOffset)
-
-		if err != nil {
-			return nil, nil, nil, nil, err
-		}
-
-		transactionDbType, err := e.getTransactionDbType(lineItems[typeColumnIdx])
-
-		if err != nil {
-			return nil, nil, nil, nil, err
-		}
-
-		categoryId := int64(0)
-
-		if transactionDbType != models.TRANSACTION_DB_TYPE_MODIFY_BALANCE {
-			transactionCategoryType, err := e.getTransactionCategoryType(transactionDbType)
-
-			if err != nil {
-				return nil, nil, nil, nil, err
-			}
-
-			subCategoryName := lineItems[subCategoryColumnIdx]
-
-			if subCategoryName == "" {
-				return nil, nil, nil, nil, errs.ErrFormatInvalid
-			}
-
-			subCategory, exists := categoryMap[subCategoryName]
-
-			if !exists {
-				subCategory = e.createNewTransactionCategoryModel(user.Uid, subCategoryName, transactionCategoryType)
-				allNewSubCategories = append(allNewSubCategories, subCategory)
-				categoryMap[subCategoryName] = subCategory
-			}
-
-			categoryId = subCategory.CategoryId
-		}
-
-		accountName := lineItems[accountColumnIdx]
-
-		if accountName == "" {
-			return nil, nil, nil, nil, errs.ErrFormatInvalid
-		}
-
-		account, exists := accountMap[accountName]
-
-		if !exists {
-			currency := user.DefaultCurrency
-
-			if accountCurrencyColumnExists {
-				currency = lineItems[accountCurrencyColumnIdx]
-
-				if _, ok := validators.AllCurrencyNames[currency]; !ok {
-					return nil, nil, nil, nil, errs.ErrAccountCurrencyInvalid
-				}
-			}
-
-			account = e.createNewAccountModel(user.Uid, accountName, currency)
-			allNewAccounts = append(allNewAccounts, account)
-			accountMap[accountName] = account
-		}
-
-		if accountCurrencyColumnExists {
-			if account.Currency != lineItems[accountCurrencyColumnIdx] {
-				return nil, nil, nil, nil, errs.ErrAccountCurrencyInvalid
-			}
-		}
-
-		amount, err := utils.ParseAmount(lineItems[amountColumnIdx])
-
-		if err != nil {
-			return nil, nil, nil, nil, err
-		}
-
-		relatedAccountId := int64(0)
-		relatedAccountAmount := int64(0)
-
-		if transactionDbType == models.TRANSACTION_DB_TYPE_TRANSFER_OUT {
-			account2Name := lineItems[account2ColumnIdx]
-
-			if account2Name == "" {
-				return nil, nil, nil, nil, errs.ErrFormatInvalid
-			}
-
-			account2, exists := accountMap[account2Name]
-
-			if !exists {
-				currency := user.DefaultCurrency
-
-				if accountCurrencyColumnExists {
-					currency = lineItems[account2CurrencyColumnIdx]
-
-					if _, ok := validators.AllCurrencyNames[currency]; !ok {
-						return nil, nil, nil, nil, errs.ErrAccountCurrencyInvalid
-					}
-				}
-
-				account2 = e.createNewAccountModel(user.Uid, account2Name, currency)
-				allNewAccounts = append(allNewAccounts, account2)
-				accountMap[account2Name] = account2
-			}
-
-			if account2CurrencyColumnExists {
-				if account2.Currency != lineItems[account2CurrencyColumnIdx] {
-					return nil, nil, nil, nil, errs.ErrAccountCurrencyInvalid
-				}
-			}
-
-			relatedAccountId = account2.AccountId
-			relatedAccountAmount, err = utils.ParseAmount(lineItems[amount2ColumnIdx])
-
-			if err != nil {
-				return nil, nil, nil, nil, err
-			}
-		}
-
-		geoLongitude := float64(0)
-		geoLatitude := float64(0)
-
-		if geoLocationExists {
-			geoLocationItems := strings.Split(lineItems[geoLocationIdx], geoLocationSeparator)
-
-			if len(geoLocationItems) == 2 {
-				geoLongitude, err = utils.StringToFloat64(geoLocationItems[0])
-
-				if err != nil {
-					return nil, nil, nil, nil, err
-				}
-
-				geoLatitude, err = utils.StringToFloat64(geoLocationItems[1])
-
-				if err != nil {
-					return nil, nil, nil, nil, err
-				}
-			}
-		}
-
-		if tagsColumnExists {
-			tagNames := strings.Split(lineItems[tagsColumnIdx], transactionTagSeparator)
-
-			for i := 0; i < len(tagNames); i++ {
-				tagName := tagNames[i]
-
-				if tagName == "" {
-					continue
-				}
-
-				tag, exists := tagMap[tagName]
-
-				if !exists {
-					tag = e.createNewTransactionTagModel(user.Uid, tagName)
-					allNewTags = append(allNewTags, tag)
-					tagMap[tagName] = tag
-				}
-			}
-		}
-
-		description := ""
-
-		if descriptionColumnExists {
-			description = lineItems[descriptionColumnIdx]
-		}
-
-		transaction := &models.Transaction{
-			Uid:                  user.Uid,
-			Type:                 transactionDbType,
-			CategoryId:           categoryId,
-			TransactionTime:      utils.GetMinTransactionTimeFromUnixTime(transactionTime.Unix()),
-			TimezoneUtcOffset:    timezoneOffset,
-			AccountId:            account.AccountId,
-			Amount:               amount,
-			HideAmount:           false,
-			RelatedAccountId:     relatedAccountId,
-			RelatedAccountAmount: relatedAccountAmount,
-			Comment:              description,
-			GeoLongitude:         geoLongitude,
-			GeoLatitude:          geoLatitude,
-			CreatedIp:            "127.0.0.1",
-		}
-
-		allNewTransactions = append(allNewTransactions, transaction)
-	}
-
-	sort.Sort(allNewTransactions)
-
-	return allNewTransactions, allNewAccounts, allNewSubCategories, allNewTags, nil
-}
-
-func (e *EzBookKeepingPlainFileConverter) getTransactionTypeName(transactionDbType models.TransactionDbType) string {
-	if transactionDbType == models.TRANSACTION_DB_TYPE_MODIFY_BALANCE {
-		return "Balance Modification"
-	} else if transactionDbType == models.TRANSACTION_DB_TYPE_INCOME {
-		return "Income"
-	} else if transactionDbType == models.TRANSACTION_DB_TYPE_EXPENSE {
-		return "Expense"
-	} else if transactionDbType == models.TRANSACTION_DB_TYPE_TRANSFER_OUT || transactionDbType == models.TRANSACTION_DB_TYPE_TRANSFER_IN {
-		return "Transfer"
-	} else {
-		return ""
-	}
-}
-
-func (e *EzBookKeepingPlainFileConverter) getTransactionDbType(transactionTypeName string) (models.TransactionDbType, error) {
-	if transactionTypeName == "Balance Modification" {
-		return models.TRANSACTION_DB_TYPE_MODIFY_BALANCE, nil
-	} else if transactionTypeName == "Income" {
-		return models.TRANSACTION_DB_TYPE_INCOME, nil
-	} else if transactionTypeName == "Expense" {
-		return models.TRANSACTION_DB_TYPE_EXPENSE, nil
-	} else if transactionTypeName == "Transfer" {
-		return models.TRANSACTION_DB_TYPE_TRANSFER_OUT, nil
-	} else {
-		return 0, errs.ErrTransactionTypeInvalid
-	}
-}
-
-func (e *EzBookKeepingPlainFileConverter) getTransactionCategoryType(transactionType models.TransactionDbType) (models.TransactionCategoryType, error) {
-	if transactionType == models.TRANSACTION_DB_TYPE_INCOME {
-		return models.CATEGORY_TYPE_INCOME, nil
-	} else if transactionType == models.TRANSACTION_DB_TYPE_EXPENSE {
-		return models.CATEGORY_TYPE_EXPENSE, nil
-	} else if transactionType == models.TRANSACTION_DB_TYPE_TRANSFER_OUT {
-		return models.CATEGORY_TYPE_TRANSFER, nil
-	} else {
-		return 0, errs.ErrTransactionTypeInvalid
-	}
-}
-
-func (e *EzBookKeepingPlainFileConverter) getTransactionCategoryName(categoryId int64, categoryMap map[int64]*models.TransactionCategory) string {
-	category, exists := categoryMap[categoryId]
-
-	if !exists {
-		return ""
-	}
-
-	if category.ParentCategoryId == 0 {
-		return category.Name
-	}
-
-	parentCategory, exists := categoryMap[category.ParentCategoryId]
-
-	if !exists {
-		return ""
-	}
-
-	return parentCategory.Name
-}
-
-func (e *EzBookKeepingPlainFileConverter) getTransactionSubCategoryName(categoryId int64, categoryMap map[int64]*models.TransactionCategory) string {
-	category, exists := categoryMap[categoryId]
-
-	if exists {
-		return category.Name
-	} else {
-		return ""
-	}
-}
-
-func (e *EzBookKeepingPlainFileConverter) getAccountName(accountId int64, accountMap map[int64]*models.Account) string {
-	account, exists := accountMap[accountId]
-
-	if exists {
-		return account.Name
-	} else {
-		return ""
-	}
-}
-
-func (e *EzBookKeepingPlainFileConverter) getAccountCurrency(accountId int64, accountMap map[int64]*models.Account) string {
-	account, exists := accountMap[accountId]
-
-	if exists {
-		return account.Currency
-	} else {
-		return ""
-	}
-}
-
-func (e *EzBookKeepingPlainFileConverter) getTags(transactionId int64, allTagIndexes map[int64][]int64, tagMap map[int64]*models.TransactionTag) string {
-	tagIndexes, exists := allTagIndexes[transactionId]
-
-	if !exists {
-		return ""
-	}
-
-	var ret strings.Builder
-
-	for i := 0; i < len(tagIndexes); i++ {
-		tagIndex := tagIndexes[i]
-		tag, exists := tagMap[tagIndex]
-
-		if !exists {
-			continue
-		}
-
-		if ret.Len() > 0 {
-			ret.WriteString(transactionTagSeparator)
-		}
-
-		ret.WriteString(strings.Replace(tag.Name, transactionTagSeparator, " ", -1))
-	}
-
-	return ret.String()
-}
-
-func (e *EzBookKeepingPlainFileConverter) replaceDelimiters(text string, separator string) string {
-	text = strings.Replace(text, separator, " ", -1)
-	text = strings.Replace(text, "\r\n", " ", -1)
-	text = strings.Replace(text, "\r", " ", -1)
-	text = strings.Replace(text, "\n", " ", -1)
-
-	return text
-}
-
-func (e *EzBookKeepingPlainFileConverter) createNewAccountModel(uid int64, accountName string, currency string) *models.Account {
-	return &models.Account{
-		Uid:      uid,
-		Name:     accountName,
-		Currency: currency,
-	}
-}
-
-func (e *EzBookKeepingPlainFileConverter) createNewTransactionCategoryModel(uid int64, categoryName string, transactionCategoryType models.TransactionCategoryType) *models.TransactionCategory {
-	return &models.TransactionCategory{
-		Uid:  uid,
-		Name: categoryName,
-		Type: transactionCategoryType,
-	}
-}
-
-func (e *EzBookKeepingPlainFileConverter) createNewTransactionTagModel(uid int64, tagName string) *models.TransactionTag {
-	return &models.TransactionTag{
-		Uid:  uid,
-		Name: tagName,
-	}
-}

pkg/converters/ezbookkeeping_transaction_data_csv_file_converter.go

@@ -0,0 +1,24 @@
+package converters
+
+// ezBookKeepingTransactionDataCSVFileConverter defines the structure of CSV file converter
+type ezBookKeepingTransactionDataCSVFileConverter struct {
+	ezBookKeepingTransactionDataPlainTextConverter
+}
+
+// Initialize an ezbookkeeping transaction data csv file converter singleton instance
+var (
+	EzBookKeepingTransactionDataCSVFileConverter = &ezBookKeepingTransactionDataCSVFileConverter{
+		ezBookKeepingTransactionDataPlainTextConverter{
+			DataTableTransactionDataConverter: DataTableTransactionDataConverter{
+				dataColumnMapping:          ezbookkeepingDataColumnNameMapping,
+				transactionTypeMapping:     ezbookkeepingTransactionTypeNameMapping,
+				transactionTypeNameMapping: ezbookkeepingNameTransactionTypeMapping,
+				columnSeparator:            ",",
+				lineSeparator:              "\n",
+				geoLocationSeparator:       " ",
+				transactionTagSeparator:    ";",
+			},
+			columns: ezbookkeepingDataColumns,
+		},
+	}
+)

pkg/converters/ezbookkeeping_transaction_data_plain_text_converter.go

@@ -0,0 +1,82 @@
+package converters
+
+import (
+	"github.com/mayswind/ezbookkeeping/pkg/models"
+)
+
+// ezBookKeepingTransactionDataPlainTextConverter defines the structure of plain file converter for transaction data
+type ezBookKeepingTransactionDataPlainTextConverter struct {
+	DataTableTransactionDataConverter
+	columns []DataTableColumn
+}
+
+var ezbookkeepingDataColumnNameMapping = map[DataTableColumn]string{
+	DATA_TABLE_TRANSACTION_TIME:         "Time",
+	DATA_TABLE_TRANSACTION_TIMEZONE:     "Timezone",
+	DATA_TABLE_TRANSACTION_TYPE:         "Type",
+	DATA_TABLE_CATEGORY:                 "Category",
+	DATA_TABLE_SUB_CATEGORY:             "Sub Category",
+	DATA_TABLE_ACCOUNT_NAME:             "Account",
+	DATA_TABLE_ACCOUNT_CURRENCY:         "Account Currency",
+	DATA_TABLE_AMOUNT:                   "Amount",
+	DATA_TABLE_RELATED_ACCOUNT_NAME:     "Account2",
+	DATA_TABLE_RELATED_ACCOUNT_CURRENCY: "Account2 Currency",
+	DATA_TABLE_RELATED_AMOUNT:           "Account2 Amount",
+	DATA_TABLE_GEOGRAPHIC_LOCATION:      "Geographic Location",
+	DATA_TABLE_TAGS:                     "Tags",
+	DATA_TABLE_DESCRIPTION:              "Description",
+}
+
+var ezbookkeepingTransactionTypeNameMapping = map[models.TransactionDbType]string{
+	models.TRANSACTION_DB_TYPE_MODIFY_BALANCE: "Balance Modification",
+	models.TRANSACTION_DB_TYPE_INCOME:         "Income",
+	models.TRANSACTION_DB_TYPE_EXPENSE:        "Expense",
+	models.TRANSACTION_DB_TYPE_TRANSFER_OUT:   "Transfer",
+	models.TRANSACTION_DB_TYPE_TRANSFER_IN:    "Transfer",
+}
+
+var ezbookkeepingNameTransactionTypeMapping = map[string]models.TransactionDbType{
+	"Balance Modification": models.TRANSACTION_DB_TYPE_MODIFY_BALANCE,
+	"Income":               models.TRANSACTION_DB_TYPE_INCOME,
+	"Expense":              models.TRANSACTION_DB_TYPE_EXPENSE,
+	"Transfer":             models.TRANSACTION_DB_TYPE_TRANSFER_OUT,
+}
+
+var ezbookkeepingDataColumns = []DataTableColumn{
+	DATA_TABLE_TRANSACTION_TIME,
+	DATA_TABLE_TRANSACTION_TIMEZONE,
+	DATA_TABLE_TRANSACTION_TYPE,
+	DATA_TABLE_CATEGORY,
+	DATA_TABLE_SUB_CATEGORY,
+	DATA_TABLE_ACCOUNT_NAME,
+	DATA_TABLE_ACCOUNT_CURRENCY,
+	DATA_TABLE_AMOUNT,
+	DATA_TABLE_RELATED_ACCOUNT_NAME,
+	DATA_TABLE_RELATED_ACCOUNT_CURRENCY,
+	DATA_TABLE_RELATED_AMOUNT,
+	DATA_TABLE_GEOGRAPHIC_LOCATION,
+	DATA_TABLE_TAGS,
+	DATA_TABLE_DESCRIPTION,
+}
+
+// ToExportedContent returns the exported plain text transaction data
+func (c *ezBookKeepingTransactionDataPlainTextConverter) ToExportedContent(uid int64, transactions []*models.Transaction, accountMap map[int64]*models.Account, categoryMap map[int64]*models.TransactionCategory, tagMap map[int64]*models.TransactionTag, allTagIndexes map[int64][]int64) ([]byte, error) {
+	dataTableBuilder := createNewezbookkeepingTransactionPlainTextDataTableBuilder(len(transactions), c.columns, c.dataColumnMapping, c.columnSeparator, c.lineSeparator)
+	err := c.buildExportedContent(dataTableBuilder, uid, transactions, accountMap, categoryMap, tagMap, allTagIndexes)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return []byte(dataTableBuilder.String()), nil
+}
+
+func (c *ezBookKeepingTransactionDataPlainTextConverter) ParseImportedData(user *models.User, data []byte, defaultTimezoneOffset int16, accountMap map[string]*models.Account, categoryMap map[string]*models.TransactionCategory, tagMap map[string]*models.TransactionTag) ([]*models.Transaction, []*models.Account, []*models.TransactionCategory, []*models.TransactionTag, error) {
+	dataTable, err := createNewezbookkeepingTransactionPlainTextDataTable(string(data), c.columnSeparator, c.lineSeparator)
+
+	if err != nil {
+		return nil, nil, nil, nil, err
+	}
+
+	return c.parseImportedData(user, dataTable, defaultTimezoneOffset, accountMap, categoryMap, tagMap)
+}

pkg/converters/ezbookkeeping_transaction_data_plain_text_converter_test.go

@@ -10,7 +10,7 @@ import (
 )
 
 func TestEzBookKeepingPlainFileConverterToExportedContent(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	transactions := make([]*models.Transaction, 3)
 	transactions[0] = &models.Transaction{
@@ -116,21 +116,21 @@ func TestEzBookKeepingPlainFileConverterToExportedContent(t *testing.T) {
 		"2024-09-01 12:34:56,+08:00,Income,Test Category,Test Sub Category,Test Account,CNY,123.45,,,,123.450000 45.670000,Test Tag;Test Tag2,Hello World\n" +
 		"2024-09-01 12:34:56,+00:00,Expense,Test Category2,Test Sub Category2,Test Account,CNY,-0.10,,,,,Test Tag,Foo#Bar\n" +
 		"2024-09-01 12:34:56,-05:00,Transfer,Test Category3,Test Sub Category3,Test Account,CNY,123.45,Test Account2,USD,17.35,,Test Tag2,T\te s t test\n"
-	actualContent, err := converter.toExportedContent(123, ",", transactions, accountMap, categoryMap, tagMap, allTagIndexes)
+	actualContent, err := converter.ToExportedContent(123, transactions, accountMap, categoryMap, tagMap, allTagIndexes)
 
 	assert.Nil(t, err)
 	assert.Equal(t, expectedContent, string(actualContent))
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_MinimumValidData(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	allNewTransactions, allNewAccounts, allNewSubCategories, allNewTags, err := converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
+	allNewTransactions, allNewAccounts, allNewSubCategories, allNewTags, err := converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
 		"2024-09-01 00:00:00,Balance Modification,,Test Account,123.45,,\n"+
 		"2024-09-01 01:23:45,Income,Test Category,Test Account,0.12,,\n"+
 		"2024-09-01 12:34:56,Expense,Test Category2,Test Account,1.00,,\n"+
@@ -182,44 +182,44 @@ func TestEzBookKeepingPlainFileConverterParseImportedData_MinimumValidData(t *te
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseInvalidTime(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	_, _, _, _, err := converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
+	_, _, _, _, err := converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
 		"2024-09-01T12:34:56,Expense,Test Category,Test Account,123.45,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
 		"09/01/2024 12:34:56,Expense,Test Category,Test Account,123.45,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseInvalidType(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	_, _, _, _, err := converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
+	_, _, _, _, err := converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
 		"2024-09-01 12:34:56,Type,Test Category,Test Account,123.45,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseValidTimezone(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	allNewTransactions, _, _, _, err := converter.parseImportedData(user, ",", []byte("Time,Timezone,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
+	allNewTransactions, _, _, _, err := converter.ParseImportedData(user, []byte("Time,Timezone,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
 		"2024-09-01 12:34:56,+08:00,Expense,Test Category,Test Account,123.45,,"), 0, nil, nil, nil)
 	assert.Nil(t, err)
 	assert.Equal(t, 1, len(allNewTransactions))
@@ -227,57 +227,57 @@ func TestEzBookKeepingPlainFileConverterParseImportedData_ParseValidTimezone(t *
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseInvalidTimezone(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	_, _, _, _, err := converter.parseImportedData(user, ",", []byte("Time,Timezone,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
+	_, _, _, _, err := converter.ParseImportedData(user, []byte("Time,Timezone,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
 		"2024-09-01 12:34:56,Asia/Shanghai,Expense,Test Category,Test Account,123.45,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseInvalidSubCategoryName(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	_, _, _, _, err := converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
+	_, _, _, _, err := converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
 		"2024-09-01 12:34:56,Expense,,Test Account,123.45,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseInvalidAccountName(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	_, _, _, _, err := converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
+	_, _, _, _, err := converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
 		"2024-09-01 12:34:56,Expense,Test Category,,123.45,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
 		"2024-09-01 12:34:56,Transfer,Test Category,Test Account,123.45,,123.45"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseValidAccountCurrency(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	allNewTransactions, allNewAccounts, _, _, err := converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount\n"+
+	allNewTransactions, allNewAccounts, _, _, err := converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount\n"+
 		"2024-09-01 01:23:45,Balance Modification,Test Category,Test Account,USD,123.45,,,\n"+
 		"2024-09-01 12:34:56,Transfer,Test Category2,Test Account,USD,1.23,Test Account2,EUR,1.10"), 0, nil, nil, nil)
 
@@ -296,67 +296,67 @@ func TestEzBookKeepingPlainFileConverterParseImportedData_ParseValidAccountCurre
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseInvalidAccountCurrency(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	_, _, _, _, err := converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount\n"+
+	_, _, _, _, err := converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount\n"+
 		"2024-09-01 01:23:45,Balance Modification,,Test Account,USD,123.45,,,\n"+
 		"2024-09-01 12:34:56,Transfer,Test Category3,Test Account,CNY,1.23,Test Account2,EUR,1.10"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount\n"+
 		"2024-09-01 01:23:45,Balance Modification,,Test Account,USD,123.45,,,\n"+
 		"2024-09-01 12:34:56,Transfer,Test Category3,Test Account2,CNY,1.23,Test Account,EUR,1.10"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseNotSupportedCurrency(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	_, _, _, _, err := converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount\n"+
+	_, _, _, _, err := converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount\n"+
 		"2024-09-01 01:23:45,Balance Modification,Test Category,Test Account,XXX,123.45,,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount\n"+
 		"2024-09-01 01:23:45,Transfer,Test Category,Test Account,USD,123.45,Test Account2,XXX,123.45"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseInvalidAmount(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	_, _, _, _, err := converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
+	_, _, _, _, err := converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
 		"2024-09-01 12:34:56,Expense,Test Category,Test Account,123 45,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount\n"+
 		"2024-09-01 12:34:56,Transfer,Test Category,Test Account,123.45,Test Account2,123 45"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseValidGeographicLocation(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	allNewTransactions, _, _, _, err := converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount,Geographic Location\n"+
+	allNewTransactions, _, _, _, err := converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount,Geographic Location\n"+
 		"2024-09-01 12:34:56,Expense,Test Category,Test Account,123.45,,,123.45 45.56"), 0, nil, nil, nil)
 
 	assert.Nil(t, err)
@@ -366,38 +366,38 @@ func TestEzBookKeepingPlainFileConverterParseImportedData_ParseValidGeographicLo
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseInvalidGeographicLocation(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	allNewTransactions, _, _, _, err := converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount,Geographic Location\n"+
+	allNewTransactions, _, _, _, err := converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount,Geographic Location\n"+
 		"2024-09-01 12:34:56,Expense,Test Category,Test Account,123.45,,,1"), 0, nil, nil, nil)
 	assert.Nil(t, err)
 	assert.Equal(t, 1, len(allNewTransactions))
 	assert.Equal(t, float64(0), allNewTransactions[0].GeoLongitude)
 	assert.Equal(t, float64(0), allNewTransactions[0].GeoLatitude)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount,Geographic Location\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount,Geographic Location\n"+
 		"2024-09-01 12:34:56,Expense,Test Category,Test Account,123.45,,,a b"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount,Geographic Location\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount,Geographic Location\n"+
 		"2024-09-01 12:34:56,Expense,Test Category,Test Account,123.45,,,1 "), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseTag(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	_, _, _, allNewTags, err := converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount,Tags\n"+
+	_, _, _, allNewTags, err := converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount,Tags\n"+
 		"2024-09-01 00:00:00,Balance Modification,,Test Account,123.45,,,foo;;bar.;#test;hello\tworld;;"), 0, nil, nil, nil)
 
 	assert.Nil(t, err)
@@ -418,14 +418,14 @@ func TestEzBookKeepingPlainFileConverterParseImportedData_ParseTag(t *testing.T)
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_ParseDescription(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1234567890,
 		DefaultCurrency: "CNY",
 	}
 
-	allNewTransactions, _, _, _, err := converter.parseImportedData(user, ",", []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount,Description\n"+
+	allNewTransactions, _, _, _, err := converter.ParseImportedData(user, []byte("Time,Type,Sub Category,Account,Amount,Account2,Account2 Amount,Description\n"+
 		"2024-09-01 12:34:56,Expense,Test Category,Test Account,123.45,,,foo    bar\t#test"), 0, nil, nil, nil)
 
 	assert.Nil(t, err)
@@ -434,45 +434,45 @@ func TestEzBookKeepingPlainFileConverterParseImportedData_ParseDescription(t *te
 }
 
 func TestEzBookKeepingPlainFileConverterParseImportedData_MissingRequiredColumn(t *testing.T) {
-	converter := &EzBookKeepingPlainFileConverter{}
+	converter := EzBookKeepingTransactionDataCSVFileConverter
 
 	user := &models.User{
 		Uid:             1,
 		DefaultCurrency: "CNY",
 	}
 
-	_, _, _, _, err := converter.parseImportedData(user, ",", []byte(""), 0, nil, nil, nil)
+	_, _, _, _, err := converter.ParseImportedData(user, []byte(""), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Timezone,Type,Category,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Timezone,Type,Category,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
 		"+08:00,Balance Modification,Test Category,Test Sub Category,Test Account,CNY,123.45,,,,,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Category,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Category,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
 		"2024-09-01 00:00:00,+08:00,Test Category,Test Sub Category,Test Account,CNY,123.45,,,,,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Type,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Type,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
 		"2024-09-01 00:00:00,+08:00,Balance Modification,Test Account,CNY,123.45,,,,,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Timezone,Type,Category,Sub Category,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Timezone,Type,Category,Sub Category,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
 		"2024-09-01 00:00:00,+08:00,Balance Modification,Test Category,Test Sub Category,CNY,123.45,,,,,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Timezone,Type,Category,Sub Category,Account,Account Currency,Account2,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Timezone,Type,Category,Sub Category,Account,Account Currency,Account2,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
 		"2024-09-01 00:00:00,+08:00,Balance Modification,Test Category,Test Sub Category,Test Account,CNY,,,,,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Timezone,Type,Category,Sub Category,Account,Account Currency,Amount,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Timezone,Type,Category,Sub Category,Account,Account Currency,Amount,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
 		"2024-09-01 00:00:00,+08:00,Balance Modification,Test Category,Test Sub Category,Test Account,CNY,123.45,,,,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Timezone,Type,Category,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Geographic Location,Tags,Description\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Timezone,Type,Category,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Geographic Location,Tags,Description\n"+
 		"2024-09-01 00:00:00,+08:00,Balance Modification,Test Category,Test Sub Category,Test Account,CNY,123.45,,,,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 
-	_, _, _, _, err = converter.parseImportedData(user, ",", []byte("Time,Timezone,Type,Category,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
+	_, _, _, _, err = converter.ParseImportedData(user, []byte("Time,Timezone,Type,Category,Sub Category,Account,Account Currency,Amount,Account2,Account2 Currency,Account2 Amount,Geographic Location,Tags,Description\n"+
 		"2024-09-01 00:00:00,+08:00,Balance Modification,Test Category,Test Sub Category,Test Account,CNY,123.45,,,,,"), 0, nil, nil, nil)
 	assert.NotNil(t, err)
 }

pkg/converters/ezbookkeeping_transaction_data_plain_text_data_table.go

@@ -0,0 +1,179 @@
+package converters
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/mayswind/ezbookkeeping/pkg/errs"
+)
+
+// ezBookKeepingTransactionPlainTextDataTable defines the structure of ezbookkeeping transaction plain text data table
+type ezBookKeepingTransactionPlainTextDataTable struct {
+	columnSeparator       string
+	lineSeparator         string
+	allLines              []string
+	headerLineColumnNames []string
+}
+
+// ezBookKeepingTransactionPlainTextDataRow defines the structure of ezbookkeeping transaction plain text data row
+type ezBookKeepingTransactionPlainTextDataRow struct {
+	allItems []string
+}
+
+// ezBookKeepingTransactionPlainTextDataRowIterator defines the structure of ezbookkeeping transaction plain text data row iterator
+type ezBookKeepingTransactionPlainTextDataRowIterator struct {
+	dataTable    *ezBookKeepingTransactionPlainTextDataTable
+	currentIndex int
+}
+
+// ezBookKeepingTransactionPlainTextDataTableBuilder defines the structure of ezbookkeeping transaction plain text data table builder
+type ezBookKeepingTransactionPlainTextDataTableBuilder struct {
+	columnSeparator       string
+	lineSeparator         string
+	columns               []DataTableColumn
+	dataColumnNameMapping map[DataTableColumn]string
+	dataLineFormat        string
+	builder               *strings.Builder
+}
+
+// DataRowCount returns the total count of data row
+func (t *ezBookKeepingTransactionPlainTextDataTable) DataRowCount() int {
+	if len(t.allLines) < 1 {
+		return 0
+	}
+
+	return len(t.allLines) - 1
+}
+
+// HeaderLineColumnNames returns the header column name list
+func (t *ezBookKeepingTransactionPlainTextDataTable) HeaderLineColumnNames() []string {
+	return t.headerLineColumnNames
+}
+
+// DataRowIterator returns the iterator of data row
+func (t *ezBookKeepingTransactionPlainTextDataTable) DataRowIterator() ImportedDataRowIterator {
+	return &ezBookKeepingTransactionPlainTextDataRowIterator{
+		dataTable:    t,
+		currentIndex: 0,
+	}
+}
+
+// ColumnCount returns the total count of column in this data row
+func (r *ezBookKeepingTransactionPlainTextDataRow) ColumnCount() int {
+	return len(r.allItems)
+}
+
+// GetData returns the data in the specified column index
+func (r *ezBookKeepingTransactionPlainTextDataRow) GetData(columnIndex int) string {
+	return r.allItems[columnIndex]
+}
+
+// HasNext returns whether the iterator does not reach the end
+func (t *ezBookKeepingTransactionPlainTextDataRowIterator) HasNext() bool {
+	return t.currentIndex+1 < len(t.dataTable.allLines)
+}
+
+// Next returns the next imported data row
+func (t *ezBookKeepingTransactionPlainTextDataRowIterator) Next() ImportedDataRow {
+	if t.currentIndex+1 >= len(t.dataTable.allLines) {
+		return nil
+	}
+
+	t.currentIndex++
+
+	rowContent := t.dataTable.allLines[t.currentIndex]
+	rowItems := strings.Split(rowContent, t.dataTable.columnSeparator)
+
+	return &ezBookKeepingTransactionPlainTextDataRow{
+		allItems: rowItems,
+	}
+}
+
+// AppendTransaction appends the specified transaction to data builder
+func (b *ezBookKeepingTransactionPlainTextDataTableBuilder) AppendTransaction(data map[DataTableColumn]string) {
+	dataRowParams := make([]any, len(b.columns))
+
+	for i := 0; i < len(b.columns); i++ {
+		dataRowParams[i] = data[b.columns[i]]
+	}
+
+	b.builder.WriteString(fmt.Sprintf(b.dataLineFormat, dataRowParams...))
+}
+
+// String returns the textual representation of this data
+func (b *ezBookKeepingTransactionPlainTextDataTableBuilder) String() string {
+	return b.builder.String()
+}
+
+func (b *ezBookKeepingTransactionPlainTextDataTableBuilder) generateHeaderLine() string {
+	var ret strings.Builder
+
+	for i := 0; i < len(b.columns); i++ {
+		if ret.Len() > 0 {
+			ret.WriteString(b.columnSeparator)
+		}
+
+		dataColumn := b.columns[i]
+		columnName := b.dataColumnNameMapping[dataColumn]
+
+		ret.WriteString(columnName)
+	}
+
+	ret.WriteString(b.lineSeparator)
+
+	return ret.String()
+}
+
+func (b *ezBookKeepingTransactionPlainTextDataTableBuilder) generateDataLineFormat() string {
+	var ret strings.Builder
+
+	for i := 0; i < len(b.columns); i++ {
+		if ret.Len() > 0 {
+			ret.WriteString(b.columnSeparator)
+		}
+
+		ret.WriteString("%s")
+	}
+
+	ret.WriteString(b.lineSeparator)
+
+	return ret.String()
+}
+
+func createNewezbookkeepingTransactionPlainTextDataTable(content string, columnSeparator string, lineSeparator string) (*ezBookKeepingTransactionPlainTextDataTable, error) {
+	allLines := strings.Split(content, lineSeparator)
+
+	if len(allLines) < 2 {
+		return nil, errs.ErrOperationFailed
+	}
+
+	headerLineItems := strings.Split(allLines[0], columnSeparator)
+
+	return &ezBookKeepingTransactionPlainTextDataTable{
+		columnSeparator:       columnSeparator,
+		lineSeparator:         lineSeparator,
+		allLines:              allLines,
+		headerLineColumnNames: headerLineItems,
+	}, nil
+}
+
+func createNewezbookkeepingTransactionPlainTextDataTableBuilder(transactionCount int, columns []DataTableColumn, dataColumnNameMapping map[DataTableColumn]string, columnSeparator string, lineSeparator string) *ezBookKeepingTransactionPlainTextDataTableBuilder {
+	var builder strings.Builder
+	builder.Grow(transactionCount * 100)
+
+	dataTableBuilder := &ezBookKeepingTransactionPlainTextDataTableBuilder{
+		columnSeparator:       columnSeparator,
+		lineSeparator:         lineSeparator,
+		columns:               columns,
+		dataColumnNameMapping: dataColumnNameMapping,
+		builder:               &builder,
+	}
+
+	headerLine := dataTableBuilder.generateHeaderLine()
+	dataLineFormat := dataTableBuilder.generateDataLineFormat()
+
+	dataTableBuilder.builder.WriteString(headerLine)
+	dataTableBuilder.dataLineFormat = dataLineFormat
+
+	return dataTableBuilder
+}

pkg/converters/ezbookkeeping_transaction_data_tsv_file_converter.go

@@ -0,0 +1,24 @@
+package converters
+
+// ezBookKeepingTransactionDataTSVFileConverter defines the structure of TSV file converter
+type ezBookKeepingTransactionDataTSVFileConverter struct {
+	ezBookKeepingTransactionDataPlainTextConverter
+}
+
+// Initialize an ezbookkeeping transaction data tsv file converter singleton instance
+var (
+	EzBookKeepingTransactionDataTSVFileConverter = &ezBookKeepingTransactionDataTSVFileConverter{
+		ezBookKeepingTransactionDataPlainTextConverter{
+			DataTableTransactionDataConverter: DataTableTransactionDataConverter{
+				dataColumnMapping:          ezbookkeepingDataColumnNameMapping,
+				transactionTypeMapping:     ezbookkeepingTransactionTypeNameMapping,
+				transactionTypeNameMapping: ezbookkeepingNameTransactionTypeMapping,
+				columnSeparator:            "\t",
+				lineSeparator:              "\n",
+				geoLocationSeparator:       " ",
+				transactionTagSeparator:    ";",
+			},
+			columns: ezbookkeepingDataColumns,
+		},
+	}
+)

pkg/converters/ezbookkeeping_tsv_file.go

@@ -1,22 +0,0 @@
-package converters
-
-import (
-	"github.com/mayswind/ezbookkeeping/pkg/models"
-)
-
-// EzBookKeepingTSVFileConverter defines the structure of TSV file converter
-type EzBookKeepingTSVFileConverter struct {
-	EzBookKeepingPlainFileConverter
-}
-
-const tsvSeparator = "\t"
-
-// ToExportedContent returns the exported TSV data
-func (e *EzBookKeepingTSVFileConverter) ToExportedContent(uid int64, transactions []*models.Transaction, accountMap map[int64]*models.Account, categoryMap map[int64]*models.TransactionCategory, tagMap map[int64]*models.TransactionTag, allTagIndexes map[int64][]int64) ([]byte, error) {
-	return e.toExportedContent(uid, tsvSeparator, transactions, accountMap, categoryMap, tagMap, allTagIndexes)
-}
-
-// ParseImportedData parses transactions of ezbookkeeping TSV data
-func (e *EzBookKeepingTSVFileConverter) ParseImportedData(user *models.User, data []byte, defaultTimezoneOffset int16, accountMap map[string]*models.Account, categoryMap map[string]*models.TransactionCategory, tagMap map[string]*models.TransactionTag) ([]*models.Transaction, []*models.Account, []*models.TransactionCategory, []*models.TransactionTag, error) {
-	return e.parseImportedData(user, tsvSeparator, data, defaultTimezoneOffset, accountMap, categoryMap, tagMap)
-}

pkg/converters/imported_transactions.go

@@ -2,21 +2,21 @@ package converters
 
 import "github.com/mayswind/ezbookkeeping/pkg/models"
 
-// ImportTransactionSlice represents the slice data structure of import transaction data
-type ImportTransactionSlice []*models.Transaction
+// ImportedTransactionSlice represents the slice data structure of import transaction data
+type ImportedTransactionSlice []*models.Transaction
 
 // Len returns the count of items
-func (s ImportTransactionSlice) Len() int {
+func (s ImportedTransactionSlice) Len() int {
 	return len(s)
 }
 
 // Swap swaps two items
-func (s ImportTransactionSlice) Swap(i, j int) {
+func (s ImportedTransactionSlice) Swap(i, j int) {
 	s[i], s[j] = s[j], s[i]
 }
 
 // Less reports whether the first item is less than the second one
-func (s ImportTransactionSlice) Less(i, j int) bool {
+func (s ImportedTransactionSlice) Less(i, j int) bool {
 	if s[i].Type != s[j].Type && (s[i].Type == models.TRANSACTION_DB_TYPE_MODIFY_BALANCE || s[j].Type == models.TRANSACTION_DB_TYPE_MODIFY_BALANCE) {
 		if s[i].Type == models.TRANSACTION_DB_TYPE_MODIFY_BALANCE {
 			return true

pkg/converters/imported_transactions_test.go

@@ -10,7 +10,7 @@ import (
 )
 
 func TestImportTransactionSliceLess(t *testing.T) {
-	var transactionSlice ImportTransactionSlice
+	var transactionSlice ImportedTransactionSlice
 	transactionSlice = append(transactionSlice, &models.Transaction{
 		TransactionId:   1,
 		Type:            models.TRANSACTION_DB_TYPE_EXPENSE,

pkg/converters/transaction_data_converter.go

@@ -4,11 +4,20 @@ import (
 	"github.com/mayswind/ezbookkeeping/pkg/models"
 )
 
-// DataConverter defines the structure of data converter
-type DataConverter interface {
+// TransactionDataExporter defines the structure of transaction data exporter
+type TransactionDataExporter interface {
 	// ToExportedContent returns the exported data
 	ToExportedContent(uid int64, transactions []*models.Transaction, accountMap map[int64]*models.Account, categoryMap map[int64]*models.TransactionCategory, tagMap map[int64]*models.TransactionTag, allTagIndexes map[int64][]int64) ([]byte, error)
+}
 
+// TransactionDataImporter defines the structure of transaction data importer
+type TransactionDataImporter interface {
 	// ParseImportedData returns the imported data
 	ParseImportedData(user *models.User, data []byte, defaultTimezoneOffset int16, accountMap map[string]*models.Account, categoryMap map[string]*models.TransactionCategory, tagMap map[string]*models.TransactionTag) ([]*models.Transaction, []*models.Account, []*models.TransactionCategory, []*models.TransactionTag, error)
 }
+
+// TransactionDataConverter defines the structure of transaction data converter
+type TransactionDataConverter interface {
+	TransactionDataExporter
+	TransactionDataImporter
+}