// Copyright IBM Corp. 2020, 2026
// SPDX-License-Identifier: MPL-2.0

package testutil

import (
	"fmt"
	"io"
	"net/http"
	"net/http/httptest"
	"os"
	"testing"
)

func NewTestServer(t testing.TB, mockDir string) *httptest.Server {
	t.Helper()

	mux := http.NewServeMux()
	mux.Handle("/", http.FileServer(http.Dir(mockDir)))

	ts := httptest.NewServer(mux)

	t.Cleanup(ts.Close)

	return ts
}

func JsonFromFile(file string) http.HandlerFunc {
	return func(w http.ResponseWriter, req *http.Request) {
		w.Header().Add("Content-Type", "application/json")

		f, err := os.Open(file)
		if err != nil {
			w.WriteHeader(500)
			fmt.Fprintf(w, `{"error": %q}`, err)
			return
		}
		defer f.Close()

		_, err = io.Copy(w, f)
		if err != nil {
			w.WriteHeader(500)
			fmt.Fprintf(w, `{"error": %q}`, err)
			return
		}
	}
}
