feat: sync current progress (P0 hardening + P1 observability + deploy docs/systemd)

internal/api/middleware.go

@@ -0,0 +1,31 @@
+package api
+
+import (
+	"strings"
+
+	"asset-tracker/internal/auth"
+
+	"github.com/gin-gonic/gin"
+)
+
+func AuthRequired(tm *auth.TokenManager) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" || !strings.HasPrefix(authHeader, "Bearer ") {
+			JSONUnauthorized(c, "AUTH_MISSING_BEARER", "missing bearer token")
+			c.Abort()
+			return
+		}
+		token := strings.TrimSpace(strings.TrimPrefix(authHeader, "Bearer "))
+		claims, err := tm.ParseAndValidate(token, "access")
+		if err != nil {
+			JSONUnauthorized(c, "AUTH_INVALID_TOKEN", "invalid token")
+			c.Abort()
+			return
+		}
+		c.Set("user_id", claims.UserID)
+		c.Set("username", claims.Username)
+		c.Set("timezone", claims.Timezone)
+		c.Next()
+	}
+}