package server

import (
	"net/http"
	"net/http/httptest"
	"testing"
)

func TestCORSMiddleware(t *testing.T) {
	handler := CORSMiddleware(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusOK)
	}))

	// Test regular request
	req := httptest.NewRequest("GET", "/test", nil)
	w := httptest.NewRecorder()
	handler.ServeHTTP(w, req)

	if w.Header().Get("Access-Control-Allow-Origin") != "*" {
		t.Error("CORS origin header missing")
	}
	if w.Header().Get("Access-Control-Allow-Methods") != "*" {
		t.Error("CORS methods header missing")
	}
	if w.Header().Get("Access-Control-Allow-Headers") != "*" {
		t.Error("CORS headers header missing")
	}
	if w.Code != http.StatusOK {
		t.Errorf("expected 200, got %d", w.Code)
	}
}

func TestCORSPreflightOptions(t *testing.T) {
	called := false
	handler := CORSMiddleware(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		called = true
	}))

	req := httptest.NewRequest("OPTIONS", "/test", nil)
	w := httptest.NewRecorder()
	handler.ServeHTTP(w, req)

	if called {
		t.Error("OPTIONS request should not reach inner handler")
	}
	if w.Code != http.StatusOK {
		t.Errorf("expected 200 for OPTIONS, got %d", w.Code)
	}
}

func TestNewRouter(t *testing.T) {
	r := NewRouter()
	if r == nil {
		t.Fatal("NewRouter returned nil")
	}

	// Add a test route and verify it works
	r.Get("/test", func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("ok"))
	})

	req := httptest.NewRequest("GET", "/test", nil)
	w := httptest.NewRecorder()
	r.ServeHTTP(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("expected 200, got %d", w.Code)
	}
	if w.Body.String() != "ok" {
		t.Errorf("expected 'ok', got %q", w.Body.String())
	}
}