Luciano Milani
136 lines
3.9 KiB
Go
136 lines
3.9 KiB
Go
package pdf
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import (
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"fmt"
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"os"
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"path/filepath"
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"github.com/go-pdf/fpdf"
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)
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type DocMeta struct {
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CompanyName string
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CompanyNIF string
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CompanyAddress string
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CompanyIBAN string
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CompanyPhone string
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CompanyEmail string
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DocType string // "Fatura" or "Orçamento"
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DocNumber string // e.g. "FAT/2026/001"
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IssuedAt string // e.g. "30/06/2026"
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ClientName string
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ClientNIF string
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VehiclePlate string
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}
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type LineItem struct {
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Description string
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Qty float64
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UnitPrice float64
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DiscountPct float64
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Total float64
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}
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func Generate(meta DocMeta, items []LineItem, staffTotal float64, outPath string) error {
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if err := os.MkdirAll(filepath.Dir(outPath), 0755); err != nil {
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return fmt.Errorf("pdf: mkdir: %w", err)
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}
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f := fpdf.New("P", "mm", "A4", "")
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f.AddPage()
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f.SetMargins(15, 15, 15)
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// Header
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f.SetFont("Helvetica", "B", 18)
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f.CellFormat(120, 10, meta.CompanyName, "", 0, "L", false, 0, "")
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f.SetFont("Helvetica", "B", 14)
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f.CellFormat(60, 10, meta.DocType, "", 1, "R", false, 0, "")
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f.SetFont("Helvetica", "", 9)
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if meta.CompanyNIF != "" {
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f.CellFormat(120, 5, "NIF: "+meta.CompanyNIF, "", 0, "L", false, 0, "")
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} else {
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f.CellFormat(120, 5, "", "", 0, "L", false, 0, "")
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}
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f.SetFont("Helvetica", "", 11)
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f.CellFormat(60, 5, meta.DocNumber, "", 1, "R", false, 0, "")
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f.SetFont("Helvetica", "", 9)
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if meta.CompanyAddress != "" {
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f.MultiCell(120, 5, meta.CompanyAddress, "", "L", false)
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}
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f.Ln(3)
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curY := f.GetY()
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f.SetXY(135, curY-3)
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f.CellFormat(60, 5, "Data: "+meta.IssuedAt, "", 1, "R", false, 0, "")
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f.SetY(curY + 3)
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f.Ln(3)
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// Client block
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if meta.ClientName != "" {
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f.SetFont("Helvetica", "B", 9)
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f.CellFormat(180, 5, "Cliente", "", 1, "L", false, 0, "")
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f.SetFont("Helvetica", "", 9)
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f.CellFormat(180, 5, meta.ClientName, "", 1, "L", false, 0, "")
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if meta.ClientNIF != "" {
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f.CellFormat(180, 5, "NIF: "+meta.ClientNIF, "", 1, "L", false, 0, "")
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}
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if meta.VehiclePlate != "" {
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f.CellFormat(180, 5, "Matrícula: "+meta.VehiclePlate, "", 1, "L", false, 0, "")
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}
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f.Ln(4)
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}
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// Table header
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f.SetFillColor(50, 50, 50)
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f.SetTextColor(255, 255, 255)
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f.SetFont("Helvetica", "B", 9)
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f.CellFormat(90, 7, "Descricao", "1", 0, "L", true, 0, "")
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f.CellFormat(20, 7, "Qtd.", "1", 0, "C", true, 0, "")
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f.CellFormat(25, 7, "Preco Unit.", "1", 0, "R", true, 0, "")
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f.CellFormat(20, 7, "Desc.%", "1", 0, "C", true, 0, "")
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f.CellFormat(25, 7, "Total", "1", 1, "R", true, 0, "")
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// Table rows
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f.SetFillColor(245, 245, 245)
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f.SetTextColor(0, 0, 0)
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f.SetFont("Helvetica", "", 9)
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fill := false
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for _, item := range items {
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f.CellFormat(90, 6, item.Description, "1", 0, "L", fill, 0, "")
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f.CellFormat(20, 6, fmt.Sprintf("%.2f", item.Qty), "1", 0, "C", fill, 0, "")
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f.CellFormat(25, 6, fmt.Sprintf("%.2f EUR", item.UnitPrice), "1", 0, "R", fill, 0, "")
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f.CellFormat(20, 6, fmt.Sprintf("%.0f%%", item.DiscountPct), "1", 0, "C", fill, 0, "")
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f.CellFormat(25, 6, fmt.Sprintf("%.2f EUR", item.Total), "1", 1, "R", fill, 0, "")
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fill = !fill
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}
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// Totals
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var subtotal float64
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for _, item := range items {
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subtotal += item.Total
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}
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grandTotal := subtotal + staffTotal
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f.Ln(3)
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f.SetFont("Helvetica", "", 9)
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if staffTotal > 0 {
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f.CellFormat(155, 6, "Subtotal pecas/servicos", "", 0, "R", false, 0, "")
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f.CellFormat(25, 6, fmt.Sprintf("%.2f EUR", subtotal), "1", 1, "R", false, 0, "")
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f.CellFormat(155, 6, "Mao de obra", "", 0, "R", false, 0, "")
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f.CellFormat(25, 6, fmt.Sprintf("%.2f EUR", staffTotal), "1", 1, "R", false, 0, "")
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}
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f.SetFont("Helvetica", "B", 10)
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f.CellFormat(155, 7, "TOTAL", "", 0, "R", false, 0, "")
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f.CellFormat(25, 7, fmt.Sprintf("%.2f EUR", grandTotal), "1", 1, "R", false, 0, "")
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// IBAN footer
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if meta.CompanyIBAN != "" {
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f.Ln(8)
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f.SetFont("Helvetica", "", 8)
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f.CellFormat(180, 5, "IBAN: "+meta.CompanyIBAN, "", 1, "C", false, 0, "")
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}
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return f.OutputFileAndClose(outPath)
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}
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