package webutils_test

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

	webutils "git.mstar.dev/mstar/goutils/http"
)

func TestChainMiddlewares(t *testing.T) {
	wrapper1 := webutils.HandlerBuilder(func(h http.Handler) http.Handler {
		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			r.Header.Add("X-Foo", "bar")
			h.ServeHTTP(w, r)
		})
	})
	wrapper2 := webutils.HandlerBuilder(func(h http.Handler) http.Handler {
		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			r.Header.Add("X-Foos", r.Header.Get("X-Foo")+"baz")
			h.ServeHTTP(w, r)
		})
	})
	baseHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if x := r.Header.Get("X-Foos"); x != "barbaz" {
			t.Fatalf(`Expected header "X-Foos" to be "barbaz", got %v`, x)
		}
	})
	handler := webutils.ChainMiddlewares(baseHandler, wrapper1, wrapper2)
	recorder := httptest.NewRecorder()
	req := httptest.NewRequest("GET", "/", nil)
	handler.ServeHTTP(recorder, req)
}