package config_test

import (
	"os"
	"testing"
	"time"

	"sneak.berlin/go/neoirc/internal/config"
	"sneak.berlin/go/neoirc/internal/globals"
	"sneak.berlin/go/neoirc/internal/logger"
)

func newConfig(t *testing.T) *config.Config {
	t.Helper()

	globs := &globals.Globals{
		Appname:   "neoirc-test",
		Version:   "test",
		StartTime: time.Now(),
	}

	log, err := logger.New(nil, logger.Params{Globals: globs})
	if err != nil {
		t.Fatal(err)
	}

	cfg, err := config.New(
		nil, config.Params{Globals: globs, Logger: log},
	)
	if err != nil {
		t.Fatal(err)
	}

	return cfg
}

func TestIRCListenAddrUnsetKeepsDefault(t *testing.T) {
	// t.Setenv puts back whatever value was there after the test.
	t.Setenv("IRC_LISTEN_ADDR", "")

	err := os.Unsetenv("IRC_LISTEN_ADDR")
	if err != nil {
		t.Fatal(err)
	}

	const want = ":6667"

	cfg := newConfig(t)
	if cfg.IRCListenAddr != want {
		t.Errorf("IRCListenAddr = %q, want %q", cfg.IRCListenAddr, want)
	}
}

func TestIRCListenAddrEmptyTurnsListenerOff(t *testing.T) {
	t.Setenv("IRC_LISTEN_ADDR", "")

	cfg := newConfig(t)
	if cfg.IRCListenAddr != "" {
		t.Errorf("IRCListenAddr = %q, want empty", cfg.IRCListenAddr)
	}
}