MaysWind
249 lines
11 KiB
Go
249 lines
11 KiB
Go
package beancount
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import (
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"strings"
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"github.com/mayswind/ezbookkeeping/pkg/converters/datatable"
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"github.com/mayswind/ezbookkeeping/pkg/core"
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"github.com/mayswind/ezbookkeeping/pkg/errs"
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"github.com/mayswind/ezbookkeeping/pkg/log"
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"github.com/mayswind/ezbookkeeping/pkg/models"
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"github.com/mayswind/ezbookkeeping/pkg/utils"
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)
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var beancountTransactionSupportedColumns = map[datatable.TransactionDataTableColumn]bool{
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datatable.TRANSACTION_DATA_TABLE_TRANSACTION_TIME: true,
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datatable.TRANSACTION_DATA_TABLE_TRANSACTION_TYPE: true,
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datatable.TRANSACTION_DATA_TABLE_SUB_CATEGORY: true,
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datatable.TRANSACTION_DATA_TABLE_ACCOUNT_NAME: true,
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datatable.TRANSACTION_DATA_TABLE_ACCOUNT_CURRENCY: true,
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datatable.TRANSACTION_DATA_TABLE_AMOUNT: true,
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datatable.TRANSACTION_DATA_TABLE_RELATED_ACCOUNT_NAME: true,
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datatable.TRANSACTION_DATA_TABLE_RELATED_ACCOUNT_CURRENCY: true,
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datatable.TRANSACTION_DATA_TABLE_RELATED_AMOUNT: true,
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datatable.TRANSACTION_DATA_TABLE_DESCRIPTION: true,
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}
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var BEANCOUNT_TRANSACTION_TAG_SEPARATOR = "#"
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// beancountTransactionDataTable defines the structure of Beancount transaction data table
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type beancountTransactionDataTable struct {
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allData []*beancountTransactionEntry
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accountMap map[string]*beancountAccount
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}
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// beancountTransactionDataRow defines the structure of Beancount transaction data row
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type beancountTransactionDataRow struct {
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dataTable *beancountTransactionDataTable
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data *beancountTransactionEntry
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finalItems map[datatable.TransactionDataTableColumn]string
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}
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// beancountTransactionDataRowIterator defines the structure of Beancount transaction data row iterator
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type beancountTransactionDataRowIterator struct {
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dataTable *beancountTransactionDataTable
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currentIndex int
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}
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// HasColumn returns whether the transaction data table has specified column
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func (t *beancountTransactionDataTable) HasColumn(column datatable.TransactionDataTableColumn) bool {
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_, exists := beancountTransactionSupportedColumns[column]
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return exists
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}
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// TransactionRowCount returns the total count of transaction data row
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func (t *beancountTransactionDataTable) TransactionRowCount() int {
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return len(t.allData)
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}
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// TransactionRowIterator returns the iterator of transaction data row
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func (t *beancountTransactionDataTable) TransactionRowIterator() datatable.TransactionDataRowIterator {
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return &beancountTransactionDataRowIterator{
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dataTable: t,
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currentIndex: -1,
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}
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}
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// IsValid returns whether this row is valid data for importing
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func (r *beancountTransactionDataRow) IsValid() bool {
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return true
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}
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// GetData returns the data in the specified column type
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func (r *beancountTransactionDataRow) GetData(column datatable.TransactionDataTableColumn) string {
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_, exists := beancountTransactionSupportedColumns[column]
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if exists {
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return r.finalItems[column]
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}
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return ""
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}
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// HasNext returns whether the iterator does not reach the end
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func (t *beancountTransactionDataRowIterator) HasNext() bool {
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return t.currentIndex+1 < len(t.dataTable.allData)
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}
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// Next returns the next imported data row
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func (t *beancountTransactionDataRowIterator) Next(ctx core.Context, user *models.User) (daraRow datatable.TransactionDataRow, err error) {
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if t.currentIndex+1 >= len(t.dataTable.allData) {
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return nil, nil
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}
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t.currentIndex++
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data := t.dataTable.allData[t.currentIndex]
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rowItems, err := t.parseTransaction(ctx, user, data)
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if err != nil {
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return nil, err
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}
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return &beancountTransactionDataRow{
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dataTable: t.dataTable,
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data: data,
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finalItems: rowItems,
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}, nil
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}
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func (t *beancountTransactionDataRowIterator) parseTransaction(ctx core.Context, user *models.User, beancountEntry *beancountTransactionEntry) (map[datatable.TransactionDataTableColumn]string, error) {
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data := make(map[datatable.TransactionDataTableColumn]string, len(beancountTransactionSupportedColumns))
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if beancountEntry.date == "" {
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return nil, errs.ErrMissingTransactionTime
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}
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// Beancount supports the international ISO 8601 standard format for dates, with dashes or the same ordering with slashes
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data[datatable.TRANSACTION_DATA_TABLE_TRANSACTION_TIME] = strings.ReplaceAll(beancountEntry.date, "/", "-") + " 00:00:00"
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if len(beancountEntry.postings) == 2 {
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splitData1 := beancountEntry.postings[0]
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splitData2 := beancountEntry.postings[1]
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account1 := t.dataTable.accountMap[splitData1.account]
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account2 := t.dataTable.accountMap[splitData2.account]
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if account1 == nil || account2 == nil {
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return nil, errs.ErrMissingAccountData
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}
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amount1, err := utils.ParseAmount(splitData1.amount)
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if err != nil {
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log.Errorf(ctx, "[beancount_transaction_data_table.parseTransaction] cannot parse amount \"%s\", because %s", splitData1.amount, err.Error())
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return nil, errs.ErrAmountInvalid
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}
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amount2, err := utils.ParseAmount(splitData2.amount)
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if err != nil {
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log.Errorf(ctx, "[beancount_transaction_data_table.parseTransaction] cannot parse amount \"%s\", because %s", splitData2.amount, err.Error())
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return nil, errs.ErrAmountInvalid
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}
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if ((account1.accountType == beancountEquityAccountType || account1.accountType == beancountIncomeAccountType) && (account2.accountType == beancountAssetsAccountType || account2.accountType == beancountLiabilitiesAccountType)) ||
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((account2.accountType == beancountEquityAccountType || account2.accountType == beancountIncomeAccountType) && (account1.accountType == beancountAssetsAccountType || account1.accountType == beancountLiabilitiesAccountType)) { // income
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fromAccount := account1
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toAccount := account2
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toCurrency := splitData2.commodity
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toAmount := amount2
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if (account2.accountType == beancountEquityAccountType || account2.accountType == beancountIncomeAccountType) && (account1.accountType == beancountAssetsAccountType || account1.accountType == beancountLiabilitiesAccountType) {
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fromAccount = account2
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toAccount = account1
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toCurrency = splitData1.commodity
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toAmount = amount1
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}
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if fromAccount.isOpeningBalanceEquityAccount() {
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data[datatable.TRANSACTION_DATA_TABLE_TRANSACTION_TYPE] = utils.IntToString(int(models.TRANSACTION_TYPE_MODIFY_BALANCE))
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} else {
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data[datatable.TRANSACTION_DATA_TABLE_TRANSACTION_TYPE] = utils.IntToString(int(models.TRANSACTION_TYPE_INCOME))
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}
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data[datatable.TRANSACTION_DATA_TABLE_SUB_CATEGORY] = fromAccount.name
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data[datatable.TRANSACTION_DATA_TABLE_ACCOUNT_NAME] = toAccount.name
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data[datatable.TRANSACTION_DATA_TABLE_ACCOUNT_CURRENCY] = toCurrency
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data[datatable.TRANSACTION_DATA_TABLE_AMOUNT] = utils.FormatAmount(toAmount)
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} else if account1.accountType == beancountExpensesAccountType && (account2.accountType == beancountAssetsAccountType || account2.accountType == beancountLiabilitiesAccountType) ||
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(account2.accountType == beancountExpensesAccountType && (account1.accountType == beancountAssetsAccountType || account1.accountType == beancountLiabilitiesAccountType)) { // expense
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fromAccount := account1
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fromCurrency := splitData1.commodity
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fromAmount := amount1
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toAccount := account2
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if account1.accountType == beancountExpensesAccountType && (account2.accountType == beancountAssetsAccountType || account2.accountType == beancountLiabilitiesAccountType) {
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fromAccount = account2
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fromCurrency = splitData2.commodity
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fromAmount = amount2
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toAccount = account1
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}
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data[datatable.TRANSACTION_DATA_TABLE_TRANSACTION_TYPE] = utils.IntToString(int(models.TRANSACTION_TYPE_EXPENSE))
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data[datatable.TRANSACTION_DATA_TABLE_SUB_CATEGORY] = toAccount.name
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data[datatable.TRANSACTION_DATA_TABLE_ACCOUNT_NAME] = fromAccount.name
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data[datatable.TRANSACTION_DATA_TABLE_ACCOUNT_CURRENCY] = fromCurrency
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data[datatable.TRANSACTION_DATA_TABLE_AMOUNT] = utils.FormatAmount(-fromAmount)
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} else if (account1.accountType == beancountAssetsAccountType || account1.accountType == beancountLiabilitiesAccountType) &&
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(account2.accountType == beancountAssetsAccountType || account2.accountType == beancountLiabilitiesAccountType) {
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var fromAccount, toAccount *beancountAccount
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var fromAmount, toAmount int64
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var fromCurrency, toCurrency string
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if amount1 < 0 {
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fromAccount = account1
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fromCurrency = splitData1.commodity
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fromAmount = -amount1
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toAccount = account2
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toCurrency = splitData2.commodity
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toAmount = amount2
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} else if amount2 < 0 {
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fromAccount = account2
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fromCurrency = splitData2.commodity
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fromAmount = -amount2
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toAccount = account1
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toCurrency = splitData1.commodity
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toAmount = amount1
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} else {
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log.Errorf(ctx, "[beancount_transaction_data_table.parseTransaction] cannot parse transfer transaction, because unexcepted account amounts \"%d\" and \"%d\"", amount1, amount2)
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return nil, errs.ErrInvalidBeancountFile
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}
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data[datatable.TRANSACTION_DATA_TABLE_TRANSACTION_TYPE] = utils.IntToString(int(models.TRANSACTION_TYPE_TRANSFER))
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data[datatable.TRANSACTION_DATA_TABLE_SUB_CATEGORY] = ""
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data[datatable.TRANSACTION_DATA_TABLE_ACCOUNT_NAME] = fromAccount.name
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data[datatable.TRANSACTION_DATA_TABLE_ACCOUNT_CURRENCY] = fromCurrency
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data[datatable.TRANSACTION_DATA_TABLE_AMOUNT] = utils.FormatAmount(fromAmount)
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data[datatable.TRANSACTION_DATA_TABLE_RELATED_ACCOUNT_NAME] = toAccount.name
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data[datatable.TRANSACTION_DATA_TABLE_RELATED_ACCOUNT_CURRENCY] = toCurrency
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data[datatable.TRANSACTION_DATA_TABLE_RELATED_AMOUNT] = utils.FormatAmount(toAmount)
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} else {
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log.Errorf(ctx, "[beancount_transaction_data_table.parseTransaction] cannot parse transaction, because unexcepted account types \"%d\" and \"%d\"", account1.accountType, account2.accountType)
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return nil, errs.ErrThereAreNotSupportedTransactionType
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}
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} else if len(beancountEntry.postings) <= 1 {
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log.Errorf(ctx, "[beancount_transaction_data_table.parseTransaction] cannot parse transaction, because postings count is %d", len(beancountEntry.postings))
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return nil, errs.ErrInvalidBeancountFile
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} else {
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log.Errorf(ctx, "[beancount_transaction_data_table.parseTransaction] cannot parse split transaction, because postings count is %d", len(beancountEntry.postings))
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return nil, errs.ErrNotSupportedSplitTransactions
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}
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data[datatable.TRANSACTION_DATA_TABLE_TAGS] = strings.Join(beancountEntry.tags, BEANCOUNT_TRANSACTION_TAG_SEPARATOR)
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data[datatable.TRANSACTION_DATA_TABLE_DESCRIPTION] = beancountEntry.narration
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return data, nil
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}
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func createNewBeancountTransactionDataTable(beancountData *beancountData) (*beancountTransactionDataTable, error) {
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if beancountData == nil {
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return nil, errs.ErrNotFoundTransactionDataInFile
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}
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return &beancountTransactionDataTable{
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allData: beancountData.transactions,
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accountMap: beancountData.accounts,
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}, nil
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}
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