315 lines
9.1 KiB
Go
315 lines
9.1 KiB
Go
package main
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import (
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"fmt"
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"github.com/jung-kurt/gofpdf"
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"golang.org/x/text/language"
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"golang.org/x/text/message"
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"gopkg.in/yaml.v2"
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"io/ioutil"
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"log"
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"math"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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)
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// Metadata type
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type Metadata struct {
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InvoiceNr string `yaml:"invoice_nr"`
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InvoiceInfo string `yaml:"invoice_info"`
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InvoiceDate string `yaml:"invoice_date"`
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Vat float64 `yaml:"vat"`
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Account string `yaml:"account"`
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DueDate string `yaml:"due_date"`
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}
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// Address type
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type Address struct {
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Name string `yaml:"name"`
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Street string `yaml:"street"`
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Zip string `yaml:"zip"`
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City string `yaml:"city"`
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TelNo string `yaml:"tel_no"`
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Email string `yaml:"email"`
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}
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// InvoiceItem type
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type InvoiceItem struct {
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Text string `yaml:"text"`
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Quantity float64 `yaml:"quantity"`
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PricePerUnit float64 `yaml:"price_per_unit"`
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}
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// InvoiceData type
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type InvoiceData struct {
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Metadata Metadata `yaml:"metadata"`
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SenderAddress Address `yaml:"sender_address"`
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BillingAddress Address `yaml:"billing_address"`
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InvoiceItems []InvoiceItem `yaml:"invoice_items"`
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}
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/* global variable declaration */
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var pdf *gofpdf.Fpdf
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var yPos float64
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var invoiceData InvoiceData
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var progDir string
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var currentPage int
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var totalPages int
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var totalNetAmount float64
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var totalInvoiceAmount float64
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const defaultFontSize = 9
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const fontSizeSmall = 7
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const marginTop = 7
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const logoTop = 6
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const logoHeight = 20
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const lineSpacing = 5
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const lineSpacingSmall = 3.5
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const addressTop = 50
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const metadataTop = 70
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const tabstopLeft = 20
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const tabstopLeftAlt = 32
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const tabstopMetadata = 60
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const tabstopAddress = 120
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const tabstopLogo = 155
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const tabstopRight = 200
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const widthItemText = 96
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const widthQuantity = 28
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const widthPricePerUnit = 28
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const widthPrice = 28
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const tabstopQuantity = tabstopRight - widthPrice - widthPricePerUnit - widthQuantity
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const tabstopPricePerUnit = tabstopRight - widthPrice - widthPricePerUnit
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const tabstopPrice = tabstopRight - widthPrice
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const itemsTop = 105
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const totalsTop = 150
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func round5rappen(f float64) float64 {
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return (math.Round(f*20) / 20)
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}
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func floatToString(f float64) string {
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p := message.NewPrinter(language.English)
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s := strings.ReplaceAll(p.Sprintf("%.2f", f), ",", "'")
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fmt.Printf("--- s: @%s@\n", s)
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return s
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}
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func readInvoiceData(filename string) {
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data, err := ioutil.ReadFile(filename)
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if err != nil {
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log.Fatal(err)
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}
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//fmt.Printf("File contents: %s", data)
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err = yaml.Unmarshal([]byte(data), &invoiceData)
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if err != nil {
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log.Fatalf("error: %v", err)
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}
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fmt.Printf("--- t:\n%v\n\n", invoiceData)
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fmt.Printf("%s\n", invoiceData.BillingAddress.Name)
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}
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func writeText(x float64, y float64, w float64, text string, alignStr ...string) {
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tr := pdf.UnicodeTranslatorFromDescriptor("")
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align := "LT"
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if len(alignStr) > 0 {
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align = alignStr[0]
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}
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pdf.SetXY(x, y)
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pdf.CellFormat(w, 11, tr(text), "", 0, align, false, 0, "")
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}
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func setupInvoice() {
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pdf = gofpdf.New("P", "mm", "A4", "")
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pdf.SetMargins(0, 0, 0)
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pdf.SetFontLocation("fonts")
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pdf.AddFont("Dejavusans", "", "DejaVuSans.json")
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pdf.AddFont("Dejavusans-Bold", "", "DejaVuSans-Bold.json")
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pdf.SetFont("Dejavusans", "", defaultFontSize)
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currentPage = 0
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}
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func printPageHeader(firstPage bool) {
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var opt gofpdf.ImageOptions
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currentPage = currentPage + 1
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pdf.AddPage()
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yPos = marginTop
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pdf.SetFont("Dejavusans-Bold", "", fontSizeSmall)
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writeText(tabstopLeft, yPos, 0, "nbit Informatik GmbH")
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pdf.SetFont("Dejavusans", "", fontSizeSmall)
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yPos = yPos + lineSpacingSmall
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writeText(tabstopLeft, yPos, 0, "Kirchweg 2")
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yPos = yPos + lineSpacingSmall
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writeText(tabstopLeft, yPos, 0, "3510 Konolfingen")
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yPos = yPos + lineSpacingSmall
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yPos = yPos + lineSpacingSmall
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writeText(tabstopLeft, yPos, 0, "Tel.")
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writeText(tabstopLeftAlt, yPos, 0, "+41 31 792 00 40")
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yPos = yPos + lineSpacingSmall
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writeText(tabstopLeft, yPos, 0, "EMail")
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writeText(tabstopLeftAlt, yPos, 0, "joerg.lehmann@nbit.ch")
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yPos = yPos + lineSpacingSmall
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opt.ImageType = "png"
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opt.ReadDpi = true
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pdf.ImageOptions("logos/nbit-logo-40x20mm-400dpi.png", tabstopLogo, logoTop, 0, logoHeight, false, opt, 0, "")
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pdf.SetFont("Dejavusans", "", defaultFontSize)
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}
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func printAddress() {
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yPos = addressTop
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writeText(tabstopAddress, yPos, 0, invoiceData.BillingAddress.Name)
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yPos = yPos + lineSpacing
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writeText(tabstopAddress, yPos, 0, invoiceData.BillingAddress.Street)
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yPos = yPos + lineSpacing
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writeText(tabstopAddress, yPos, 0, invoiceData.BillingAddress.Zip+" "+invoiceData.BillingAddress.City)
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}
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func printMetadataFirstPage() {
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yPos = metadataTop
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pdf.SetFont("Dejavusans-Bold", "", 16)
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writeText(tabstopLeft, yPos, 0, "Rechnung")
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yPos = yPos + lineSpacing
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yPos = yPos + lineSpacing
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pdf.SetFont("Dejavusans-Bold", "", defaultFontSize)
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writeText(tabstopLeft, yPos, 0, "Rechnungsnummer:")
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pdf.SetFont("Dejavusans", "", defaultFontSize)
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writeText(tabstopMetadata, yPos, 0, invoiceData.Metadata.InvoiceNr)
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yPos = yPos + lineSpacing
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pdf.SetFont("Dejavusans-Bold", "", defaultFontSize)
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writeText(tabstopLeft, yPos, 0, "Rechnungsdatum:")
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pdf.SetFont("Dejavusans", "", defaultFontSize)
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writeText(tabstopMetadata, yPos, 0, invoiceData.Metadata.InvoiceDate)
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}
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func printItemsHeader() {
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yPos = itemsTop
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pdf.SetFont("Dejavusans-Bold", "", defaultFontSize)
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writeText(tabstopLeft, yPos, 0, "Bezeichnung")
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writeText(tabstopQuantity, yPos, widthQuantity, "Menge", "TR")
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writeText(tabstopPricePerUnit, yPos, widthPricePerUnit, "Einheitspreis", "TR")
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writeText(tabstopPrice, yPos, widthPrice, "Preis", "TR")
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pdf.SetFont("Dejavusans", "", defaultFontSize)
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yPos = yPos + lineSpacing
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pdf.Line(tabstopLeft, yPos, tabstopRight, yPos)
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yPos = yPos + lineSpacing
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}
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func printItems() {
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for _, i := range invoiceData.InvoiceItems {
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if i.Quantity != 0 {
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writeText(tabstopQuantity, yPos, widthQuantity, fmt.Sprintf("%.1f", i.Quantity), "TR")
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writeText(tabstopPricePerUnit, yPos, widthPricePerUnit, fmt.Sprintf("%.2f", i.PricePerUnit), "TR")
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itemNetAmount := round5rappen(i.Quantity * i.PricePerUnit)
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totalNetAmount = totalNetAmount + itemNetAmount
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writeText(tabstopPrice, yPos, widthPrice, floatToString(itemNetAmount), "TR")
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}
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if i.Text != "" {
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lines := pdf.SplitText(i.Text, widthItemText)
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for _, il := range lines {
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writeText(tabstopLeft, yPos, 0, strings.ReplaceAll(il, "_", " "))
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yPos = yPos + lineSpacing
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}
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} else {
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yPos = yPos + lineSpacing
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}
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}
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}
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func printTotals() {
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yPos = totalsTop
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pdf.Line(tabstopRight-widthPrice, yPos, tabstopRight, yPos)
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pdf.SetFont("Dejavusans-Bold", "", defaultFontSize)
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yPos = yPos + lineSpacing
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writeText(tabstopLeft, yPos, 0, "Netto Betrag")
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writeText(tabstopPrice, yPos, widthPrice, floatToString(totalNetAmount), "TR")
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yPos = yPos + lineSpacing
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yPos = yPos + lineSpacing
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writeText(tabstopLeft, yPos, 0, fmt.Sprintf("MwSt. %.1f%%", invoiceData.Metadata.Vat))
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mwstAmount := round5rappen(totalNetAmount * invoiceData.Metadata.Vat / 100)
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writeText(tabstopPrice, yPos, widthPrice, floatToString(mwstAmount), "TR")
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yPos = yPos + lineSpacing
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yPos = yPos + lineSpacing
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writeText(tabstopLeft, yPos, 0, "Total Betrag sFr.")
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totalInvoiceAmount = totalNetAmount + mwstAmount
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writeText(tabstopPrice, yPos, widthPrice, floatToString(totalNetAmount+mwstAmount), "TR")
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}
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func printQR() {
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var opt gofpdf.ImageOptions
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cmd := exec.Command(filepath.Join(progDir, "qrbill.sh"),
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"--account", invoiceData.Metadata.Account,
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"--amount", floatToString(totalInvoiceAmount),
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"--creditor-name", invoiceData.SenderAddress.Name,
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"--creditor-street", invoiceData.SenderAddress.Street,
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"--creditor-postalcode", invoiceData.SenderAddress.Zip,
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"--creditor-city", invoiceData.SenderAddress.City,
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"--extra-infos", invoiceData.Metadata.InvoiceInfo,
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"--debtor-name", invoiceData.BillingAddress.Name,
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"--debtor-street", invoiceData.BillingAddress.Street,
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"--debtor-postalcode", invoiceData.BillingAddress.Zip,
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"--debtor-city", invoiceData.BillingAddress.City,
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"--due-date", invoiceData.Metadata.DueDate,
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"--language", "de")
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cmd.Env = append(os.Environ(),
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"INVNO="+invoiceData.Metadata.InvoiceNr,
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)
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stdoutStderr, err := cmd.CombinedOutput()
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fmt.Printf("%s\n", stdoutStderr)
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if err != nil {
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log.Fatal(err)
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}
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fmt.Printf("%s\n", stdoutStderr)
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opt.ImageType = "png"
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opt.ReadDpi = true
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pdf.ImageOptions("qr-images/"+invoiceData.Metadata.InvoiceNr+".png", 0, 200, -1, -1, false, opt, 0, "")
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}
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func CreateInvoice() {
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totalNetAmount = 0
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readInvoiceData(os.Args[1])
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setupInvoice()
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printPageHeader(true)
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printAddress()
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printMetadataFirstPage()
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printItemsHeader()
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printItems()
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printTotals()
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printQR()
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}
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func main() {
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dir, err := filepath.Abs(filepath.Dir(os.Args[0]))
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if err != nil {
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log.Fatal(err)
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}
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progDir = dir
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if len(os.Args) != 2 {
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fmt.Printf("usage: mkinvoice <yaml-file>\n")
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os.Exit(1)
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}
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// First Run to get total number of pages
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CreateInvoice()
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totalPages = pdf.PageNo()
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fmt.Printf("Total Pages is: %d\n", totalPages)
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// Second Run
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CreateInvoice()
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err = pdf.OutputFileAndClose(filepath.Join(progDir, "output", invoiceData.Metadata.InvoiceNr+".pdf"))
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if err == nil {
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fmt.Printf("Successfully created invoice\n")
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} else {
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fmt.Printf("Error: %v\n", err)
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}
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}
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