add middlewares, handlers and database models

internal/middleware/chain.go

@@ -0,0 +1,21 @@
+package middleware
+
+import "net/http"
+
+// Chain applies multiple middleware in order (first to last)
+// The middleware are executed in the order they are provided
+//
+// Example:
+//
+//	handler := Chain(mux,
+//	    AuthMiddleware(...),  // Executes first
+//	    WithURLPath,          // Executes second
+//	    Config(...),          // Executes third
+//	)
+func Chain(h http.Handler, middlewares ...func(http.Handler) http.Handler) http.Handler {
+	// Apply middleware in reverse order so they execute in the order provided
+	for i := len(middlewares) - 1; i >= 0; i-- {
+		h = middlewares[i](h)
+	}
+	return h
+}