From dc33adb733ace846da99eedee23d78c724a81211 Mon Sep 17 00:00:00 2001
From: "Gustavo \"Guz\" L de Mello" <contact@guz.one>
Date: Thu, 6 Mar 2025 16:55:16 -0300
Subject: [PATCH] feat: args func to pass multiple arguments to templates

---
 templates/templates.go | 27 ++++++++++++++++++++++++---
 1 file changed, 24 insertions(+), 3 deletions(-)

diff --git a/templates/templates.go b/templates/templates.go
index 7bb6723..d87cfbb 100644
--- a/templates/templates.go
+++ b/templates/templates.go
@@ -2,15 +2,36 @@ package templates
 
 import (
 	"embed"
+	"errors"
+	"fmt"
 	"html/template"
 )
 
-//go:embed *.html test/*.html
+//go:embed *.html layouts/*.html
 var embedded embed.FS
 
-var temps = template.Must(template.ParseFS(embedded,
+var temps = template.Must(template.New("templates").Funcs(template.FuncMap{
+	"args": func(pairs ...any) (map[string]any, error) {
+		if len(pairs)%2 != 0 {
+			return nil, errors.New("misaligned map in template arguments")
+		}
+
+		m := make(map[string]any, len(pairs)/2)
+
+		for i := 0; i < len(pairs); i += 2 {
+			key, ok := pairs[i].(string)
+			if !ok {
+				return nil, fmt.Errorf("cannot use type %T as map key", pairs[i])
+			}
+
+			m[key] = pairs[i+1]
+		}
+
+		return m, nil
+	},
+}).ParseFS(embedded,
 	"*.html",
-	"test/*.html",
+	"layouts/*.html",
 ))
 
 func Templates() *template.Template {