early development...

bookkeeper.go

@@ -4,6 +4,8 @@ import (
 	"bufio"
 	"fmt"
 	"github.com/go-pdf/fpdf"
+	"golang.org/x/text/language"
+	"golang.org/x/text/message"
 	"log"
 	"os"
 	"regexp"
@@ -27,19 +29,31 @@ type Transaction struct {
 	Items []TransactionItem
 }
 
+type Balance struct {
+	balance_start float64
+	balance_end   float64
+}
+
 /* global variable declaration */
 var pdf *fpdf.Fpdf
 var yPos float64
 var accounts = make(map[string]string)
 var transactions = make(map[uint16]Transaction)
-var account_balance = make(map[string]string)
+var account_balance = make(map[string]Balance)
-var yearEndDate = "YEARENDDATE"
+var balanceYear = "UNDEFINED"
 
 const reportTitle = "Jahresrechnung - nbit Informatik GmbH"
 const defaultFontSize = 9
+const smallFontSize = 7
 const marginTop = 10
+const smallLineSpacing = 4
 const lineSpacing = 5
-const tabstopLeft = 20
+const tabstopLeft = 25
+const tabstopRight = 100
+const widthAmount = 28
+const dashCorrectionXleft = 1.2
+const dashCorrectionXright = -1.3
+const dashCorrectionY = 3
 
 //func round5rappen(f float64) float64 {
 //	return (math.Round(f*20) / 20)
@@ -60,6 +74,16 @@ func addTransaction(document_number string, date string, text string, account_nu
 		return
 	}
 
+	// we use the first transaction to set the year, all transactions not in this year will be invalid
+	if balanceYear == "UNDEFINED" {
+		balanceYear = date[6:10]
+	} else {
+		if date[6:10] != balanceYear {
+			fmt.Printf("WARNING: transaction with Document Number %s is not in same year as first transaction: %s and will be ignored\n", document_number, balanceYear)
+			return
+		}
+	}
+
 	var myItem TransactionItem
 
 	document_number_i, err := strconv.ParseInt(document_number, 0, 16)
@@ -73,7 +97,8 @@ func addTransaction(document_number string, date string, text string, account_nu
 	if s, err := strconv.ParseFloat(amount, 64); err == nil {
 		myItem.Amount = s
 	} else {
-		fmt.Printf("Cannot convert Amount to Float64: %s\n", amount)
+		fmt.Printf("WARNING: Document %s, cannot convert Amount to Float64: %s and will be ignored\n", document_number, amount)
+		return
 	}
 	myItem.Vat_code = vat_code
 
@@ -103,8 +128,8 @@ func readAccountData(filename string) {
 		line := scanner.Text()
 		matched, _ := regexp.MatchString(`^[0-9][0-9][0-9][0-9],.*`, line)
 		if !matched {
-			fmt.Printf("Line %v in Accountfile %s: line not four digits followed by a comma: %s.\n", line_number, filename, line)
+			fmt.Printf("WARNING: Line %v in Accountfile %s: line not four digits followed by a comma: %s and will be ignored.\n", line_number, filename, line)
-			os.Exit(3)
+			continue
 		}
 
 		token := strings.SplitN(line, ",", 2)
@@ -112,8 +137,8 @@ func readAccountData(filename string) {
 		account_description := token[1]
 
 		if accountExists(account_number) {
-			fmt.Printf("Line %v in Accountfile %s: Account Number %s already exists\n", line_number, filename, account_number)
+			fmt.Printf("WARNING: Line %v in Accountfile %s: Account Number %s already exists and will be ignored\n", line_number, filename, account_number)
-			os.Exit(4)
+			continue
 
 		}
 
@@ -127,6 +152,22 @@ func readAccountData(filename string) {
 	}
 }
 
+func floatToString(f float64, sep string) string {
+	p := message.NewPrinter(language.English)
+	s := strings.ReplaceAll(p.Sprintf("%.2f", f), ",", sep)
+	//fmt.Printf("--- s: @%s@\n", s)
+	return s
+}
+
+func str2float64(f string) float64 {
+	if s, err := strconv.ParseFloat(f, 64); err == nil {
+		return (s)
+	} else {
+		fmt.Printf("WARNING: cannot convert Amount to Float64: %s and will be ignored\n", f)
+		return 0
+	}
+}
+
 func readTransactionData(filename string) {
 	file, err := os.Open(filename)
 	if err != nil {
@@ -150,12 +191,12 @@ func readTransactionData(filename string) {
 			vat_code := token[6]
 
 			if !accountExists(account_number_debit) {
-				fmt.Printf("Line %v in Transactionfile %s: Account Number Debit %s does not exist\n", line_number, filename, account_number_debit)
+				fmt.Printf("WARNING: Line %v in Transactionfile %s: Account Number Debit %s does not exist, and will be ignored\n", line_number, filename, account_number_debit)
-				os.Exit(4)
+				continue
 			}
 			if !accountExists(account_number_credit) {
-				fmt.Printf("Line %v in Transactionfile %s: Account Number Credit %s does not exist\n", line_number, filename, account_number_credit)
+				fmt.Printf("WARNING: Line %v in Transactionfile %s: Account Number Credit %s does not exist and will be ignored\n", line_number, filename, account_number_credit)
-				os.Exit(4)
+				continue
 			}
 
 			addTransaction(document_number, date, text, account_number_debit, account_number_credit, amount, vat_code)
@@ -167,15 +208,20 @@ func readTransactionData(filename string) {
 				account_number := token[0]
 				balance := token[1]
 				if !accountExists(account_number) {
-					fmt.Printf("Line %v in Transactionfile %s: Account Number %s does not exist\n", line_number, filename, account_number)
+					fmt.Printf("WARNING: Line %v in Transactionfile %s: Account Number %s does not exist and will be ignored\n", line_number, filename, account_number)
-					os.Exit(4)
+					continue
 				}
 
-				account_balance[account_number] = balance
+				f := str2float64(balance)
+
+				var myBalance Balance
+				myBalance.balance_start = f
+				myBalance.balance_end = f
+				account_balance[account_number] = myBalance
 
 			} else {
-				fmt.Printf("Line %v in Transactionfile %s is not of the form <document number>,<date>,<text>,<account number debit>,<account number credit>,<amount>,<vat code>.\n", line_number, filename, line)
+				fmt.Printf("WARNING: Line %v in Transactionfile %s is not of the form <document number>,<date>,<text>,<account number debit>,<account number credit>,<amount>,<vat code> and will be ignored.\n", line_number, filename, line)
-				os.Exit(3)
+				continue
 			}
 			line_number++
 		}
@@ -212,29 +258,62 @@ func printPageHeader() {
 	pdf.SetFont("Dejavusans-Bold", "", defaultFontSize)
 	writeText(tabstopLeft, yPos, 0, reportTitle)
 	yPos = yPos + lineSpacing
-	pdf.SetFont("Dejavusans", "", defaultFontSize)
+	pdf.SetFont("Dejavusans", "", smallFontSize)
-	writeText(tabstopLeft, yPos, 0, "per "+yearEndDate)
+	writeText(tabstopLeft, yPos, 0, "per 31.12."+balanceYear)
+	yPos = yPos + lineSpacing + smallLineSpacing
 }
 
-func printAssets() {
+func printSection(section string) {
-}
+	var title string
+	var chars string
+	switch section {
+	case "assets":
+		title = "AKTIVEN"
+		chars = "1"
+	case "liabilities":
+		title = "PASSIVEN"
+		chars = "2"
+	case "expense":
+		title = "AUFWAND"
+		chars = "568"
+	case "income":
+		title = "ERTRAG"
+		chars = "4"
+	default:
+		fmt.Printf("WARNING: invalid section: %s\n", section)
+		return
+	}
 
-func printLiabilities() {
+	var total float64 = 0.0
-}
+	pdf.SetFont("Dejavusans-Bold", "", smallFontSize)
+	writeText(tabstopLeft, yPos, 0, title)
+	writeText(tabstopRight, yPos, widthAmount, "31.12."+balanceYear, "TR")
+	yPos = yPos + smallLineSpacing
+	pdf.SetFont("Dejavusans", "", smallFontSize)
+	pdf.SetDashPattern([]float64{0.2, 0.2}, 0)
+	for key, element := range account_balance {
+		if strings.Contains(chars, key[0:1]) {
+			writeText(tabstopLeft, yPos, 0, accounts[key])
+			writeText(tabstopRight, yPos, widthAmount, floatToString(element.balance_end, "'"), "TR")
+			pdf.Line(tabstopLeft+dashCorrectionXleft, yPos+dashCorrectionY, tabstopRight+widthAmount+dashCorrectionXright, yPos+dashCorrectionY)
+			total = total + element.balance_end
+			yPos = yPos + smallLineSpacing
+		}
+	}
+	pdf.SetFont("Dejavusans-Bold", "", smallFontSize)
+	writeText(tabstopLeft, yPos, 0, "TOTAL "+title)
+	writeText(tabstopRight, yPos, widthAmount, floatToString(total, "'"), "TR")
+	yPos = yPos + smallLineSpacing + smallLineSpacing
 
-func printExpenses() {
-}
-
-func printIncome() {
 }
 
 func createBalanceSheet() {
 	setupBalanceSheet()
 	printPageHeader()
-	printAssets()
+	printSection("assets")
-	printLiabilities()
+	printSection("liabilities")
-	printExpenses()
+	printSection("expense")
-	printIncome()
+	printSection("income")
 	err := pdf.OutputFileAndClose("output.pdf")
 	if err == nil {
 		fmt.Printf("Successfully created Balance Sheet in file output.pdf\n")

go.mod

@@ -4,4 +4,5 @@ go 1.20
 
 require (
 	github.com/go-pdf/fpdf v0.9.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
 )

go.sum

@@ -12,3 +12,5 @@ github.com/ruudk/golang-pdf417 v0.0.0-20181029194003-1af4ab5afa58/go.mod h1:6lfF
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 golang.org/x/image v0.0.0-20190910094157-69e4b8554b2a/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=