feat: Added basic user authorization

modules/jwt/claims.go

@@ -0,0 +1,38 @@
+package jwt
+
+import (
+	"os"
+	"slices"
+	"strings"
+
+	"github.com/golang-jwt/jwt/v5"
+)
+
+type Claims struct {
+	*jwt.RegisteredClaims
+
+	UserID uint64 `json:"userId"`
+}
+
+func NewClaims() *Claims {
+	c := &Claims{
+		RegisteredClaims: &jwt.RegisteredClaims{},
+	}
+
+	var (
+		trustedHosts = os.Getenv("JWT_TRUSTED_HOSTS")
+		audienceList []string
+	)
+
+	c.Issuer = os.Getenv("APP_HOST")
+
+	audienceList = append(audienceList, strings.Split(trustedHosts, ",")...)
+	audienceList = append(audienceList, c.Issuer)
+	audienceList = slices.DeleteFunc(audienceList, func(s string) bool {
+		return s == ""
+	})
+
+	c.Audience = audienceList
+
+	return c
+}