better configuration strategy

config/middleware.go

@@ -1,4 +1,4 @@
-package middleware
+package config
 
 import (
 	"log"

config/views.go

@@ -25,7 +25,7 @@ var ViewMap = map[string][]string{
 	),
 }
 
-var FuncMap = map[string]any{
+var ViewFormatters = map[string]any{
 	"uppercase": func(s string) string { return strings.ToUpper(s) },
 	"firstWord": func(s string) string {
 		words := strings.Fields(s)

forms/formatters.go

@@ -4,6 +4,15 @@ import (
 	"strings"
 )
 
+type Formatter func(string) string
+
+var Formatters = map[string]Formatter{
+	"trim":       strings.TrimSpace,
+	"lower":      strings.ToLower,
+	"upper":      strings.ToUpper,
+	"capitalize": capitalize,
+}
+
 func capitalize(s string) string {
 	words := strings.Fields(s)
 	for i, word := range words {

forms/forms.go

@@ -9,23 +9,6 @@ import (
 	"strings"
 )
 
-type Formatter func(string) string
-
-var Formatters = map[string]Formatter{
-	"trim":       strings.TrimSpace,
-	"lower":      strings.ToLower,
-	"upper":      strings.ToUpper,
-	"capitalize": capitalize,
-}
-
-type Validator func(fieldName string, value any, param string) error
-
-var Validators = map[string]Validator{
-	"nonzero": nonzero,
-	"minlen":  minlen,
-	"email":   email,
-}
-
 func FormToStruct[T any](r *http.Request) (T, error) {
 	var target T
 	if err := r.ParseForm(); err != nil {
@@ -184,8 +167,8 @@ func parseValidators(tag string) []struct {
 		Name  string
 		Param string
 	}
-	parts := strings.SplitSeq(tag, ",")
-	for part := range parts {
+	parts := strings.Split(tag, ",")
+	for _, part := range parts {
 		pair := strings.SplitN(part, ":", 2)
 		if len(pair) == 2 {
 			result = append(result, struct{ Name, Param string }{pair[0], pair[1]})

forms/validators.go

@@ -4,20 +4,32 @@ import (
 	"fmt"
 	"reflect"
 	"strconv"
-	"strings"
+	"net/mail"
 )
 
+type Validator func(fieldName string, value any, param string) error
+
+var Validators = map[string]Validator{
+	"nonzero": nonzero,
+	"minlen":  minlen,
+	"email":   email,
+}
+
 func nonzero(field string, value any, _ string) error {
 	v := reflect.ValueOf(value)
+
 	if v.Kind() == reflect.String && v.Len() == 0 {
 		return fmt.Errorf("field '%s' must not be empty", field)
 	}
+
 	if v.Kind() == reflect.Slice && v.Len() == 0 {
 		return fmt.Errorf("field '%s' must not be empty", field)
 	}
+
 	if v.Kind() >= reflect.Int && v.Kind() <= reflect.Float64 && v.IsZero() {
 		return fmt.Errorf("field '%s' must be non-zero", field)
 	}
+
 	return nil
 }
 
@@ -26,16 +38,24 @@ func minlen(field string, value any, param string) error {
 	if err != nil {
 		return fmt.Errorf("invalid minlen param for field '%s'", field)
 	}
+
 	if str, ok := value.(string); ok && len(str) < min {
 		return fmt.Errorf("field '%s' must be at least %d characters", field, min)
 	}
+
 	return nil
 }
 
 func email(field string, value any, _ string) error {
 	str, ok := value.(string)
-	if !ok || !strings.Contains(str, "@") {
+	if !ok {
 		return fmt.Errorf("field '%s' must be a valid email address", field)
 	}
+
+	_, err := mail.ParseAddress(str)
+	if err != nil {
+		return fmt.Errorf("invalid email address: %v", err)
+	}
+
 	return nil
 }

main.go

@@ -39,7 +39,7 @@ func init() {
 }
 
 func main() {
-	err := views.Init(viewFS, config.ViewMap, config.FuncMap)
+	err := views.Init(viewFS, config.ViewMap, config.ViewFormatters)
 	if err != nil {
 		log.Fatalf("failed to initialize templates: %v", err)
 	}

routes.go

@@ -3,6 +3,7 @@ package main
 import (
 	"net/http"
 
+	"git.tavo.one/tavo/axiom/config"
 	"git.tavo.one/tavo/axiom/handlers"
 	"git.tavo.one/tavo/axiom/middleware"
 )
@@ -11,7 +12,7 @@ func routes(handler *handlers.Handler) *http.ServeMux {
 	router := http.NewServeMux()
 
 	protectedStack := middleware.Stack(
-		middleware.AuthCheck,
+		config.AuthCheck,
 	)
 
 	router.HandleFunc(