1package main
  2
  3import (
  4	"strconv"
  5
  6	"github.com/signintech/gopdf"
  7)
  8
  9const quantityColumnOffset = 360
 10const rateColumnOffset = 405
 11const amountColumnOffset = 480
 12
 13const (
 14	subtotalLabel = "Subtotal"
 15	discountLabel = "Discount"
 16	taxLabel      = "Tax"
 17	totalLabel    = "Total"
 18)
 19
 20func writeLogo(pdf *gopdf.GoPdf, logo string, from string) {
 21	if logo != "" {
 22		_ = pdf.Image(logo, pdf.GetX(), pdf.GetY(), &gopdf.Rect{W: 44, H: 44})
 23		pdf.Br(64)
 24	}
 25	_ = pdf.SetFont("Inter", "", 12)
 26	pdf.SetTextColor(155, 155, 155)
 27	_ = pdf.Cell(nil, from)
 28	pdf.Br(36)
 29	pdf.SetStrokeColor(225, 225, 225)
 30	pdf.Line(pdf.GetX(), pdf.GetY(), 100, pdf.GetY())
 31	pdf.Br(36)
 32}
 33
 34func writeTitle(pdf *gopdf.GoPdf, title, id string) {
 35	_ = pdf.SetFont("Inter", "", 24)
 36	pdf.SetTextColor(0, 0, 0)
 37	_ = pdf.Cell(nil, title)
 38	pdf.Br(36)
 39	_ = pdf.SetFont("Inter", "", 12)
 40	pdf.SetTextColor(225, 225, 225)
 41	_ = pdf.Cell(nil, "#")
 42	pdf.SetTextColor(175, 175, 175)
 43	_ = pdf.Cell(nil, id)
 44	pdf.Br(48)
 45}
 46
 47func writeBillTo(pdf *gopdf.GoPdf, to string) {
 48	pdf.SetTextColor(200, 200, 200)
 49	_ = pdf.SetFont("Inter", "", 9)
 50	_ = pdf.Cell(nil, "BILL TO")
 51	pdf.Br(14)
 52	pdf.SetTextColor(175, 175, 175)
 53	_ = pdf.SetFont("Inter", "", 15)
 54	_ = pdf.Cell(nil, to)
 55	pdf.Br(64)
 56}
 57
 58func writeHeaderRow(pdf *gopdf.GoPdf) {
 59	_ = pdf.SetFont("Inter", "", 9)
 60	pdf.SetTextColor(175, 175, 175)
 61	_ = pdf.Cell(nil, "ITEM")
 62	pdf.SetX(quantityColumnOffset)
 63	_ = pdf.Cell(nil, "QTY")
 64	pdf.SetX(rateColumnOffset)
 65	_ = pdf.Cell(nil, "RATE")
 66	pdf.SetX(amountColumnOffset)
 67	_ = pdf.Cell(nil, "AMOUNT")
 68	pdf.Br(24)
 69}
 70
 71func writeNotes(pdf *gopdf.GoPdf, notes string) {
 72	pdf.SetY(650)
 73
 74	_ = pdf.SetFont("Inter", "", 10)
 75	pdf.SetTextColor(155, 155, 155)
 76	_ = pdf.Cell(nil, "Notes")
 77	pdf.Br(18)
 78	pdf.SetTextColor(0, 0, 0)
 79	_ = pdf.Cell(nil, notes)
 80	pdf.Br(48)
 81}
 82
 83func writeFooter(pdf *gopdf.GoPdf, id string) {
 84	pdf.SetY(800)
 85
 86	_ = pdf.SetFont("Inter", "", 10)
 87	pdf.SetTextColor(155, 155, 155)
 88	_ = pdf.Cell(nil, id)
 89	pdf.SetStrokeColor(225, 225, 225)
 90	pdf.Line(pdf.GetX()+10, pdf.GetY()+6, 550, pdf.GetY()+6)
 91	pdf.Br(48)
 92}
 93
 94func writeRow(pdf *gopdf.GoPdf, item string, quantity int, rate float64) {
 95	_ = pdf.SetFont("Inter", "", 11)
 96	pdf.SetTextColor(0, 0, 0)
 97
 98	total := float64(quantity) * rate
 99	amount := strconv.FormatFloat(total, 'f', 2, 64)
100
101	_ = pdf.Cell(nil, item)
102	pdf.SetX(quantityColumnOffset)
103	_ = pdf.Cell(nil, strconv.Itoa(quantity))
104	pdf.SetX(rateColumnOffset)
105	_ = pdf.Cell(nil, currencySymbols[currency]+strconv.FormatFloat(rate, 'f', 2, 64))
106	pdf.SetX(amountColumnOffset)
107	_ = pdf.Cell(nil, currencySymbols[currency]+amount)
108	pdf.Br(24)
109}
110
111func writeTotals(pdf *gopdf.GoPdf, subtotal float64, tax float64, discount float64) {
112	pdf.SetY(650)
113
114	writeTotal(pdf, subtotalLabel, subtotal)
115	if tax > 0 {
116		writeTotal(pdf, taxLabel, tax)
117	}
118	if discount > 0 {
119		writeTotal(pdf, discountLabel, discount)
120	}
121	writeTotal(pdf, totalLabel, subtotal+tax-discount)
122}
123
124func writeTotal(pdf *gopdf.GoPdf, label string, total float64) {
125	_ = pdf.SetFont("Inter", "", 9)
126	pdf.SetTextColor(175, 175, 175)
127	pdf.SetX(rateColumnOffset)
128	_ = pdf.Cell(nil, label)
129	pdf.SetTextColor(0, 0, 0)
130	_ = pdf.SetFontSize(12)
131	pdf.SetX(amountColumnOffset - 15)
132	_ = pdf.Cell(nil, currencySymbols[currency]+strconv.FormatFloat(total, 'f', 2, 64))
133	pdf.Br(24)
134}