package main

import (
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"testing"
)

func TestResolveHealthAddrFromListenAddrFile(t *testing.T) {
	dir := t.TempDir()
	if err := os.WriteFile(filepath.Join(dir, "listen.addr"), []byte("0.0.0.0:19100\n"), 0o644); err != nil {
		t.Fatal(err)
	}
	got, err := resolveHealthAddr(dir, ":7443")
	if err != nil {
		t.Fatal(err)
	}
	if got != "127.0.0.1:19100" {
		t.Fatalf("got %q", got)
	}
}

func TestResolveHealthAddrFromListen(t *testing.T) {
	got, err := resolveHealthAddr(t.TempDir(), ":9555")
	if err != nil {
		t.Fatal(err)
	}
	if got != "127.0.0.1:9555" {
		t.Fatalf("got %q", got)
	}
}

func TestCmdHealthcheckOK(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte("ok"))
	}))
	t.Cleanup(srv.Close)

	dir := t.TempDir()
	// httptest URL is like http://127.0.0.1:port — write host:port into listen.addr
	hostPort := srv.Listener.Addr().String()
	if err := os.WriteFile(filepath.Join(dir, "listen.addr"), []byte(hostPort+"\n"), 0o644); err != nil {
		t.Fatal(err)
	}
	cfgPath := filepath.Join(dir, "config.yaml")
	if err := os.WriteFile(cfgPath, []byte("listen: \":0\"\ndata_dir: \""+filepath.ToSlash(dir)+"\"\n"), 0o644); err != nil {
		t.Fatal(err)
	}
	t.Setenv("NIXMSG_CONFIG", cfgPath)
	if err := cmdHealthcheck(nil); err != nil {
		t.Fatal(err)
	}
}