506 lines
17 KiB
Go
506 lines
17 KiB
Go
package main
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import (
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"bytes"
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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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"image/png"
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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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"path/filepath"
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"strings"
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"github.com/stapelberg/qrbill"
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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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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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VatNumber string `yaml:"vat_number"`
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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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StreetNumber string `yaml:"streetnumber"`
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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 totalItemLines 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 smallFontSize = 7
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const paymentSlipTitleFontSize = 11
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const paymentSlipHeadingFontSize = 6
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const paymentSlipValuesFontSize = 8
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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 = 4.5
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const lineSpacingPaymentSlipBig = 6
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const lineSpacingPaymentSlipBelowHeading = 2.8
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const lineSpacingPaymentSlipSmall = 3.175
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const addressTop = 50
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const metadataTopFirstPage = 70
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const metadataTopNotFirstPage = 30
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const tabstopLeft = 20
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const tabstopLeftAlt = 40
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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 itemsTopFirstPage = 105
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const itemsTopNotFirstPage = 50
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const totalsTop = 158
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const maxYPos = 265
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const paymentSlipTop = 193.5
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const paymentSlipWaehrung = 270
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const paymentSlipDashLeft = 60.5
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const tabstopPaymentSlipLeft = 5
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const tabstopPaymentSlipLeft2 = 17
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const tabstopPaymentSlipLeft3 = 40
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const tabstopPaymentSlipMiddle = 68
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const tabstopPaymentSlipMiddle2 = 80
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const tabstopPaymentSlipRight = 125
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const scissorsTop = 200
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const widthA4 = 210
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const lengthA4 = 297
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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, sep string) string {
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p := message.NewPrinter(language.English)
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s := strings.ReplaceAll(p.Sprintf("%.2f", f), ",", sep)
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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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}
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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.SetAutoPageBreak(false, 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", "", defaultFontSize)
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writeText(tabstopLeft, yPos, 0, invoiceData.SenderAddress.Name)
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pdf.SetFont("Dejavusans", "", defaultFontSize)
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yPos = yPos + lineSpacing
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writeText(tabstopLeft, yPos, 0, invoiceData.SenderAddress.Street+" "+invoiceData.SenderAddress.StreetNumber)
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yPos = yPos + lineSpacing
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writeText(tabstopLeft, yPos, 0, invoiceData.SenderAddress.Zip+" "+invoiceData.SenderAddress.City)
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if firstPage {
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yPos = yPos + lineSpacing
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yPos = yPos + lineSpacing
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writeText(tabstopLeft, yPos, 0, "Telefon")
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writeText(tabstopLeftAlt, yPos, 0, invoiceData.SenderAddress.TelNo)
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yPos = yPos + lineSpacing
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writeText(tabstopLeft, yPos, 0, "E-Mail")
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writeText(tabstopLeftAlt, yPos, 0, invoiceData.SenderAddress.Email)
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yPos = yPos + lineSpacing
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writeText(tabstopLeft, yPos, 0, "MwSt. Nr.")
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writeText(tabstopLeftAlt, yPos, 0, invoiceData.Metadata.VatNumber)
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}
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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+" "+invoiceData.BillingAddress.StreetNumber)
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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 printMetadata(firstPage bool) {
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yPos = metadataTopNotFirstPage
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if firstPage {
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yPos = metadataTopFirstPage
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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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}
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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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if firstPage {
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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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yPos = yPos + lineSpacing
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}
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pdf.SetFont("Dejavusans-Bold", "", defaultFontSize)
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writeText(tabstopLeft, yPos, 0, "Seite:")
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pdf.SetFont("Dejavusans", "", defaultFontSize)
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writeText(tabstopMetadata, yPos, 0, fmt.Sprintf("%d von %d", currentPage, totalPages))
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}
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func printItemsHeader() {
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if currentPage == 1 {
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yPos = itemsTopFirstPage
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} else {
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yPos = itemsTopNotFirstPage
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}
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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 maybeNewPage() {
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if yPos > maxYPos {
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printPageHeader(false)
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printMetadata(false)
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printItemsHeader()
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}
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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("%g", 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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totalItemLines = totalItemLines + 1
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writeText(tabstopLeft, yPos, 0, strings.ReplaceAll(il, "_", " "))
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yPos = yPos + lineSpacing
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maybeNewPage()
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}
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} else {
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totalItemLines = totalItemLines + 1
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yPos = yPos + lineSpacing
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maybeNewPage()
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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+(lineSpacing/2), tabstopRight, yPos+(lineSpacing/2))
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pdf.SetFont("Dejavusans-Bold", "", defaultFontSize)
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yPos = yPos + lineSpacing
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writeText(tabstopLeft, yPos, 0, "Summe")
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pdf.SetFont("Dejavusans", "", defaultFontSize)
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writeText(tabstopPrice, yPos, widthPrice, floatToString(totalNetAmount, "'"), "TR")
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yPos = yPos + lineSpacing
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pdf.SetFont("Dejavusans-Bold", "", defaultFontSize)
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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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pdf.SetFont("Dejavusans", "", defaultFontSize)
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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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pdf.SetFont("Dejavusans-Bold", "", defaultFontSize)
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writeText(tabstopLeft, yPos, 0, "Rechnungbetrag in CHF")
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totalInvoiceAmount = totalNetAmount + mwstAmount
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writeText(tabstopPrice, yPos, widthPrice, floatToString(totalNetAmount+mwstAmount, "'"), "TR")
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yPos = yPos + lineSpacingSmall
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pdf.SetFont("Dejavusans", "", smallFontSize)
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writeText(tabstopLeft, yPos, 0, "30 Tage netto")
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}
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func qrchFromInvoiceData(id InvoiceData) *qrbill.QRCH {
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return &qrbill.QRCH{
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CdtrInf: qrbill.QRCHCdtrInf{
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IBAN: id.Metadata.Account,
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Cdtr: qrbill.Address{
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AdrTp: qrbill.AddressType(string(qrbill.AddressTypeStructured)),
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Name: id.SenderAddress.Name,
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StrtNmOrAdrLine1: id.SenderAddress.Street,
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BldgNbOrAdrLine2: id.SenderAddress.StreetNumber,
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PstCd: id.SenderAddress.Zip,
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TwnNm: id.SenderAddress.City,
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Ctry: "CH",
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},
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},
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CcyAmt: qrbill.QRCHCcyAmt{
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Amt: fmt.Sprintf("%.2f", totalInvoiceAmount),
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Ccy: "CHF",
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},
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UltmtDbtr: qrbill.Address{
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AdrTp: qrbill.AddressType(string(qrbill.AddressTypeStructured)),
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Name: id.BillingAddress.Name,
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StrtNmOrAdrLine1: id.BillingAddress.Street,
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BldgNbOrAdrLine2: id.BillingAddress.StreetNumber,
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PstCd: id.BillingAddress.Zip,
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TwnNm: id.BillingAddress.City,
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Ctry: "CH",
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},
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RmtInf: qrbill.QRCHRmtInf{
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Tp: "NON", // Reference type
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Ref: "", // Reference
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AddInf: qrbill.QRCHRmtInfAddInf{
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Ustrd: "Rechnung Nummer " + id.Metadata.InvoiceNr,
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},
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},
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}
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}
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func printPaymentSlip() {
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var opt gofpdf.ImageOptions
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pdf.SetDashPattern([]float64{0.8, 0.8}, 0)
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pdf.Line(0, paymentSlipTop, widthA4, paymentSlipTop)
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pdf.Line(paymentSlipDashLeft, paymentSlipTop, paymentSlipDashLeft, lengthA4)
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opt.ImageType = "png"
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pdf.ImageOptions("logos/scissors-rotated.png", paymentSlipDashLeft-1.5, paymentSlipTop+10, 3, 3, false, opt, 0, "")
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pdf.SetFont("Helvetica", "B", paymentSlipTitleFontSize)
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yPos = paymentSlipTop + 7
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writeText(tabstopPaymentSlipLeft, yPos, 0, "Empfangsschein")
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yPos = yPos + lineSpacingPaymentSlipBig
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pdf.SetFont("Helvetica", "B", paymentSlipHeadingFontSize)
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writeText(tabstopPaymentSlipLeft, yPos, 0, "Konto / Zahlbar an")
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yPos = yPos + lineSpacingPaymentSlipBelowHeading
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pdf.SetFont("Helvetica", "", paymentSlipValuesFontSize)
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writeText(tabstopPaymentSlipLeft, yPos, 0, invoiceData.Metadata.Account)
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yPos = yPos + lineSpacingPaymentSlipSmall
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writeText(tabstopPaymentSlipLeft, yPos, 0, invoiceData.SenderAddress.Name)
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yPos = yPos + lineSpacingPaymentSlipSmall
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writeText(tabstopPaymentSlipLeft, yPos, 0, invoiceData.SenderAddress.Street+" "+invoiceData.SenderAddress.StreetNumber)
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yPos = yPos + lineSpacingPaymentSlipSmall
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writeText(tabstopPaymentSlipLeft, yPos, 0, invoiceData.SenderAddress.Zip+" "+invoiceData.SenderAddress.City)
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yPos = yPos + lineSpacingPaymentSlipSmall
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yPos = yPos + lineSpacingPaymentSlipSmall
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pdf.SetFont("Helvetica", "B", paymentSlipHeadingFontSize)
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writeText(tabstopPaymentSlipLeft, yPos, 0, "Zahlbar durch")
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yPos = yPos + lineSpacingPaymentSlipBelowHeading
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pdf.SetFont("Helvetica", "", paymentSlipValuesFontSize)
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writeText(tabstopPaymentSlipLeft, yPos, 0, invoiceData.BillingAddress.Name)
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yPos = yPos + lineSpacingPaymentSlipSmall
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writeText(tabstopPaymentSlipLeft, yPos, 0, invoiceData.BillingAddress.Street+" "+invoiceData.BillingAddress.StreetNumber)
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yPos = yPos + lineSpacingPaymentSlipSmall
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writeText(tabstopPaymentSlipLeft, yPos, 0, invoiceData.BillingAddress.Zip+" "+invoiceData.BillingAddress.City)
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yPos = paymentSlipWaehrung
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pdf.SetFont("Helvetica", "B", paymentSlipHeadingFontSize)
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writeText(tabstopPaymentSlipLeft, yPos, 0, "Währung")
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writeText(tabstopPaymentSlipLeft2, yPos, 0, "Betrag")
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yPos = yPos + lineSpacingPaymentSlipBelowHeading
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pdf.SetFont("Helvetica", "", paymentSlipValuesFontSize)
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writeText(tabstopPaymentSlipLeft, yPos, 0, "CHF")
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writeText(tabstopPaymentSlipLeft2, yPos, 0, floatToString(totalInvoiceAmount, " "))
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yPos = yPos + lineSpacingPaymentSlipSmall
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yPos = yPos + lineSpacingPaymentSlipSmall
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pdf.SetFont("Helvetica", "B", paymentSlipHeadingFontSize)
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writeText(tabstopPaymentSlipLeft3, yPos, 0, "Annahmestelle")
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pdf.SetFont("Helvetica", "B", paymentSlipTitleFontSize)
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yPos = paymentSlipTop + 7
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writeText(tabstopPaymentSlipMiddle, yPos, 0, "Zahlteil")
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yPos = paymentSlipWaehrung
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pdf.SetFont("Helvetica", "B", paymentSlipHeadingFontSize)
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writeText(tabstopPaymentSlipMiddle, yPos, 0, "Währung")
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writeText(tabstopPaymentSlipMiddle2, yPos, 0, "Betrag")
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yPos = yPos + lineSpacingPaymentSlipBelowHeading
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pdf.SetFont("Helvetica", "", paymentSlipValuesFontSize)
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writeText(tabstopPaymentSlipMiddle, yPos, 0, "CHF")
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writeText(tabstopPaymentSlipMiddle2, yPos, 0, floatToString(totalInvoiceAmount, " "))
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yPos = paymentSlipTop + 7
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pdf.SetFont("Helvetica", "B", paymentSlipHeadingFontSize)
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writeText(tabstopPaymentSlipRight, yPos, 0, "Konto / Zahlbar an")
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yPos = yPos + lineSpacingPaymentSlipBelowHeading
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pdf.SetFont("Helvetica", "", paymentSlipValuesFontSize)
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writeText(tabstopPaymentSlipRight, yPos, 0, invoiceData.Metadata.Account)
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yPos = yPos + lineSpacingPaymentSlipSmall
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writeText(tabstopPaymentSlipRight, yPos, 0, invoiceData.SenderAddress.Name)
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yPos = yPos + lineSpacingPaymentSlipSmall
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writeText(tabstopPaymentSlipRight, yPos, 0, invoiceData.SenderAddress.Street+" "+invoiceData.SenderAddress.StreetNumber)
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yPos = yPos + lineSpacingPaymentSlipSmall
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writeText(tabstopPaymentSlipRight, yPos, 0, invoiceData.SenderAddress.Zip+" "+invoiceData.SenderAddress.City)
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yPos = yPos + (lineSpacingPaymentSlipSmall * 1.5)
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pdf.SetFont("Helvetica", "B", paymentSlipHeadingFontSize)
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writeText(tabstopPaymentSlipRight, yPos, 0, "Zusätzliche Informationen")
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yPos = yPos + lineSpacingPaymentSlipBelowHeading
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pdf.SetFont("Helvetica", "", paymentSlipValuesFontSize)
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writeText(tabstopPaymentSlipRight, yPos, 0, "Rechnung Nummer "+invoiceData.Metadata.InvoiceNr)
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yPos = yPos + (lineSpacingPaymentSlipSmall * 1.5)
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pdf.SetFont("Helvetica", "B", paymentSlipHeadingFontSize)
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writeText(tabstopPaymentSlipRight, yPos, 0, "Zahlbar durch")
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yPos = yPos + lineSpacingPaymentSlipBelowHeading
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pdf.SetFont("Helvetica", "", paymentSlipValuesFontSize)
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writeText(tabstopPaymentSlipRight, yPos, 0, invoiceData.BillingAddress.Name)
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yPos = yPos + lineSpacingPaymentSlipSmall
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writeText(tabstopPaymentSlipRight, yPos, 0, invoiceData.BillingAddress.Street+" "+invoiceData.BillingAddress.StreetNumber)
|
|
yPos = yPos + lineSpacingPaymentSlipSmall
|
|
writeText(tabstopPaymentSlipRight, yPos, 0, invoiceData.BillingAddress.Zip+" "+invoiceData.BillingAddress.City)
|
|
}
|
|
|
|
func printQR() {
|
|
var opt gofpdf.ImageOptions
|
|
|
|
var b []byte
|
|
var err error
|
|
qrch := qrchFromInvoiceData(invoiceData)
|
|
bill, err := qrch.Encode()
|
|
|
|
code, err := bill.EncodeToImage()
|
|
if err != nil {
|
|
log.Printf("%s", err)
|
|
return
|
|
}
|
|
|
|
var buf bytes.Buffer
|
|
if err := png.Encode(&buf, code); err != nil {
|
|
log.Printf("%s", err)
|
|
return
|
|
}
|
|
b = buf.Bytes()
|
|
|
|
err = ioutil.WriteFile("qr-images/"+invoiceData.Metadata.InvoiceNr+".png", b, 0644)
|
|
if err != nil {
|
|
// handle error
|
|
}
|
|
|
|
opt.ImageType = "png"
|
|
opt.ReadDpi = false
|
|
|
|
pdf.ImageOptions("qr-images/"+invoiceData.Metadata.InvoiceNr+".png", tabstopPaymentSlipMiddle-2, paymentSlipTop+13, 56, 56, false, opt, 0, "")
|
|
}
|
|
|
|
func CreateInvoice() {
|
|
totalNetAmount = 0
|
|
totalItemLines = 0
|
|
readInvoiceData(os.Args[1])
|
|
setupInvoice()
|
|
printPageHeader(true)
|
|
printAddress()
|
|
printMetadata(true)
|
|
printItemsHeader()
|
|
printItems()
|
|
printTotals()
|
|
printPaymentSlip()
|
|
printQR()
|
|
}
|
|
|
|
func main() {
|
|
dir, err := filepath.Abs(filepath.Dir(os.Args[0]))
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
progDir = dir
|
|
|
|
if len(os.Args) != 2 {
|
|
fmt.Printf("usage: mkinvoice <yaml-file>\n")
|
|
os.Exit(1)
|
|
}
|
|
|
|
// First Run to get total number of pages
|
|
CreateInvoice()
|
|
totalPages = pdf.PageNo()
|
|
fmt.Printf("Total Pages is: %d\n", totalPages)
|
|
fmt.Printf("Total Item Lines is: %d\n", totalItemLines)
|
|
|
|
// Second Run
|
|
CreateInvoice()
|
|
|
|
err = pdf.OutputFileAndClose(filepath.Join(progDir, "output", invoiceData.Metadata.InvoiceNr+".pdf"))
|
|
if err == nil {
|
|
fmt.Printf("Successfully created invoice\n")
|
|
} else {
|
|
fmt.Printf("Error: %v\n", err)
|
|
}
|
|
}
|