From 6c0440f06d1af2d7b53523e9ed52c17decf99b87 Mon Sep 17 00:00:00 2001
From: kalipso <kalipso@c3d2.de>
Date: Wed, 2 Jul 2025 00:28:13 +0200
Subject: [PATCH] add coverpage to price calculation

---
 models/printer.go | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/models/printer.go b/models/printer.go
index 9de3af4..d8cd2ee 100644
--- a/models/printer.go
+++ b/models/printer.go
@@ -133,6 +133,11 @@ func (p *PrintJob) Execute() error {
 
 func (p *PrintJob) CalculatePrintCosts() (float64, error) {
 	pageCount := utils.CountPagesAtPath(p.ShopItem.Pdf)
+
+	if pageCount == 0 {
+		return 0, fmt.Errorf("Cant calculate price, pdf seems to be empty")
+	}
+
 	printMode := GetPrintMode(p.ShopItem.PrintMode)
 
 	//Get actual pagecount depending on printmode
@@ -154,7 +159,15 @@ func (p *PrintJob) CalculatePrintCosts() (float64, error) {
 	if p.IsColored() {
 		partCost = 0.0478
 	}
-	printingCosts := float64(actualPageCount) * p.PaperType.Price
+
+	printingCosts := float64(actualPageCount-1) * p.PaperType.Price
+
+	if p.CoverPaperType != nil {
+		printingCosts += p.CoverPaperType.Price
+	} else {
+		printingCosts += p.PaperType.Price
+	}
+
 	printingCosts += float64(actualPageCount/2) * PPC
 	printingCosts += partCost * float64(actualPageCount)