feat/user-templates (#9)

feat: user templates

pkg/invoice/report/resource.go

@@ -3,29 +3,41 @@ package report
 import (
 	"time"
 
+	_ "embed"
+
 	"git.schreifuchs.ch/lou-taylor/accounting/pkg/invoice/issue"
 	"git.schreifuchs.ch/lou-taylor/accounting/pkg/invoice/model"
 	"git.schreifuchs.ch/lou-taylor/accounting/pkg/invoice/report/qrbill"
 )
 
+//go:embed assets/template.html
+var htmlTemplate string
+
 type Report struct {
-	Date    time.Time
-	Issues  []issue.Issue
-	Invoice qrbill.Invoice
-	Rate    float64
-	Company model.Entity
-	Client  *model.Entity
+	Date     time.Time
+	Issues   []issue.Issue
+	Invoice  qrbill.Invoice
+	Rate     float64
+	Company  model.Entity
+	Client   *model.Entity
+	template string
 }
 
-func New(issues []issue.Issue, company model.Entity, client *model.Entity, rate float64) *Report {
-	r := &Report{
-		Date:    time.Now(),
-		Issues:  issues,
-		Rate:    rate,
-		Company: company,
-		Client:  client,
+func New(issues []issue.Issue, company model.Entity, client *model.Entity, rate float64) Report {
+	r := Report{
+		Date:     time.Now(),
+		Issues:   issues,
+		Rate:     rate,
+		Company:  company,
+		Client:   client,
+		template: htmlTemplate,
 	}
 	r.Invoice = qrbill.New(r.applyRate(r.Total()), r.Company, r.Client)
 
 	return r
 }
+
+func (r Report) WithTemplate(template string) Report {
+	r.template = template
+	return r
+}