From 692f378eab3fe0fad802609e102da70872b85d7c Mon Sep 17 00:00:00 2001
From: Nicolai Ort <info@nicolai-ort.com>
Date: Mon, 9 Dec 2024 16:59:39 +0100
Subject: [PATCH] feat(templater): Implement unit formats

---
 services/templater.go         | 13 +++++++++++++
 templates/certificate/de.html | 10 +++++-----
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/services/templater.go b/services/templater.go
index a51dabe..8feefec 100644
--- a/services/templater.go
+++ b/services/templater.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"encoding/base64"
 	"errors"
+	"fmt"
 	"html/template"
 	"image/png"
 
@@ -89,10 +90,22 @@ func (t *DefaultTemplater) SelectSponsorImage(id int) (string, error) {
 	return templates.GetImage(sponsors[id%len(sponsors)]), nil
 }
 
+func FormatUnit(unit string, amount int) (string, error) {
+	switch unit {
+	case "kilometer":
+		return fmt.Sprintf("%.3f", float64(amount)/1000), nil
+	case "euro":
+		return fmt.Sprintf("%.2f", float64(amount)/100), nil
+	default:
+		return "", errors.New("unknown unit")
+	}
+}
+
 func (t *DefaultTemplater) StringToTemplate(templateString string) (*template.Template, error) {
 	return template.New("template").Funcs(template.FuncMap{
 		"barcode":     t.GenerateBarcode,
 		"sponsorLogo": t.SelectSponsorImage,
+		"formatUnit":  FormatUnit,
 	}).Parse(templateString)
 }
 
diff --git a/templates/certificate/de.html b/templates/certificate/de.html
index 6a59f80..361b1a0 100644
--- a/templates/certificate/de.html
+++ b/templates/certificate/de.html
@@ -56,7 +56,7 @@
         {{ .MiddleName }} {{ .LastName }}
       </p>
       <p style="font-size: 1cm; margin-bottom: 0;">hat beim {{ $.EventName }}</p>
-      <p style="font-size: 2cm; font-weight: bold; margin-bottom: 0;">{{unitFormat "kilometer" .Distance}}km</p>
+      <p style="font-size: 2cm; font-weight: bold; margin-bottom: 0;">{{formatUnit "kilometer" .Distance}}km</p>
       <p style="font-size: 1cm;">für den guten Zweck zurückgelegt</p>
     </main>
     <footer class="certificate-footer">
@@ -78,15 +78,15 @@
           {{ range .DistanceDonations}}
           <tr>
             <td>{{ .Donor.FirstName }} {{ .Donor.MiddleName }} {{ .Donor.LastName }}</td>
-            <td>{{ unitFormat "euro" .AmountPerDistance }} {{ $.CurrencySymbol }}</td>
-            <td>{{ unitFormat "euro" .Amount }} {{ $.CurrencySymbol }}</td>
+            <td>{{ formatUnit "euro" .AmountPerDistance }} {{ $.CurrencySymbol }}</td>
+            <td>{{ formatUnit "euro" .Amount }} {{ $.CurrencySymbol }}</td>
           </tr>
           {{ end }}
         </tbody>
         <tfoot>
           <td>Gesamt</td>
-          <td>{{ unitFormat .TotalPerDistance }} {{ $.CurrencySymbol }}</td>
-          <td>{{ unitFormat .TotalDonations }} {{ $.CurrencySymbol }}</td>
+          <td>{{ formatUnit "euro" .TotalPerDistance }} {{ $.CurrencySymbol }}</td>
+          <td>{{ formatUnit "euro" .TotalDonations }} {{ $.CurrencySymbol }}</td>
         </tfoot>
       </table>
     </main>