jules/chat/telegram/telegram_test.go

package telegram

import (
	"context"
	"encoding/json"
	"fmt"
	"net"
	"net/http"
	"net/http/httptest"
	"sync"
	"testing"
	"time"

	"github.com/armon/go-socks5"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

type mockTelegramServer struct {
	mu       sync.Mutex
	messages []mockMessage
	updateID int64
}

type mockMessage struct {
	chatID int64
	text   string
}

func (m *mockTelegramServer) addMessage(chatID int64, text string) {
	m.mu.Lock()
	defer m.mu.Unlock()
	m.messages = append(m.messages, mockMessage{chatID: chatID, text: text})
}

func (m *mockTelegramServer) handler() http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Path {
		case "/bottest_token/getMe":
			json.NewEncoder(w).Encode(map[string]any{
				"ok":     true,
				"result": map[string]string{"username": "test_bot"},
			})
		case "/bottest_token/sendMessage":
			json.NewEncoder(w).Encode(map[string]any{
				"ok":     true,
				"result": map[string]any{"message_id": 1},
			})
		case "/bottest_token/getUpdates":
			m.mu.Lock()
			defer m.mu.Unlock()

			updates := []map[string]any{}
			for _, msg := range m.messages {
				m.updateID++
				updates = append(updates, map[string]any{
					"update_id": m.updateID,
					"message": map[string]any{
						"message_id": m.updateID,
						"chat":       map[string]any{"id": msg.chatID},
						"text":       msg.text,
					},
				})
			}
			m.messages = nil

			json.NewEncoder(w).Encode(map[string]any{
				"ok":     true,
				"result": updates,
			})
		default:
			w.WriteHeader(http.StatusNotFound)
		}
	}
}

func startMockSocks5Server(t *testing.T) (string, func()) {
	conf := &socks5.Config{}
	server, err := socks5.New(conf)
	require.NoError(t, err)

	listener, err := net.Listen("tcp", "127.0.0.1:0")
	require.NoError(t, err)

	port := listener.Addr().(*net.TCPAddr).Port
	proxyURL := fmt.Sprintf("socks5://127.0.0.1:%d", port)

	go func() {
		_ = server.Serve(listener)
	}()

	return proxyURL, func() {
		listener.Close()
	}
}

func newMockServer() (*httptest.Server, *mockTelegramServer) {
	mock := &mockTelegramServer{}
	return httptest.NewServer(mock.handler()), mock
}

func newTestBot(t *testing.T, server *httptest.Server) *Bot {
	t.Helper()
	bot, err := New("test_token", server.URL+"/bot%s/%s", "")
	require.NoError(t, err)
	return bot
}

func TestNew_MockAPI(t *testing.T) {
	server, _ := newMockServer()
	defer server.Close()

	bot := newTestBot(t, server)
	assert.NotNil(t, bot)
}

func TestNew_Error(t *testing.T) {
	server, _ := newMockServer()
	defer server.Close()

	_, err := New("test_token", server.URL+"/invalid", "")
	assert.Error(t, err)
}

func TestNew_GetMeError(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path == "/bottest_token/getMe" {
			w.WriteHeader(http.StatusUnauthorized)
			w.Write([]byte(`{"ok":false,"description":"Unauthorized"}`))
			return
		}
		json.NewEncoder(w).Encode(map[string]any{"ok": true, "result": map[string]string{}})
	}))
	defer server.Close()

	_, err := New("test_token", server.URL+"/bot%s/%s", "")
	assert.Error(t, err)
	assert.Contains(t, err.Error(), "failed to connect to telegram")
}

func TestSend_MockAPI(t *testing.T) {
	server, _ := newMockServer()
	defer server.Close()

	bot := newTestBot(t, server)
	err := bot.Send(t.Context(), "123456789", "hello")
	assert.NoError(t, err)
}

func TestSend_InvalidID(t *testing.T) {
	server, _ := newMockServer()
	defer server.Close()

	bot := newTestBot(t, server)
	err := bot.Send(t.Context(), "not_a_number", "test")
	assert.Error(t, err)
}

func TestReceive_MockAPI(t *testing.T) {
	server, mock := newMockServer()
	defer server.Close()

	bot := newTestBot(t, server)
	mock.addMessage(123456789, "hello world")

	ctx2, cancel := context.WithCancel(t.Context())
	defer cancel()

	msgs := bot.Receive(ctx2)

	select {
	case msg := <-msgs:
		assert.Equal(t, "123456789", msg.ID)
		assert.Equal(t, "hello world", msg.Text)
		assert.Equal(t, "telegram", msg.Chat)
	case <-time.After(time.Second):
		t.Fatal("timeout waiting for message")
	}
}

func TestReceive_ContextCancel(t *testing.T) {
	server, _ := newMockServer()
	defer server.Close()

	bot := newTestBot(t, server)

	ctx, cancel := context.WithCancel(t.Context())
	msgs := bot.Receive(ctx)
	cancel()

	select {
	case _, ok := <-msgs:
		assert.False(t, ok)
	case <-time.After(time.Second):
		t.Fatal("channel not closed after context cancel")
	}
}

func TestReceive_ContextCancelDuringSend(t *testing.T) {
	server, mock := newMockServer()
	defer server.Close()

	bot := newTestBot(t, server)
	mock.addMessage(123456789, "hello world")

	ctx, cancel := context.WithCancel(t.Context())
	msgs := bot.Receive(ctx)

	time.Sleep(100 * time.Millisecond)

	cancel()

	select {
	case _, ok := <-msgs:
		assert.False(t, ok)
	case <-time.After(time.Second):
		t.Fatal("channel not closed")
	}
}

func TestNew_WithProxy(t *testing.T) {
	proxyURL, cleanup := startMockSocks5Server(t)
	defer cleanup()

	server, _ := newMockServer()
	defer server.Close()

	bot, err := New("test_token", server.URL+"/bot%s/%s", proxyURL)
	require.NoError(t, err)
	assert.NotNil(t, bot)
}

func TestNew_WithProxy_InvalidURL(t *testing.T) {
	_, err := New("test_token", "http://api.telegram.org", "invalid-url")
	assert.Error(t, err)
}

func TestNew_WithProxy_ConnectionRefused(t *testing.T) {
	_, err := New("test_token", "http://api.telegram.org", "socks5://localhost:1081")
	assert.Error(t, err)
}

func TestNew_WithoutProxy(t *testing.T) {
	server, _ := newMockServer()
	defer server.Close()

	bot, err := New("test_token", server.URL+"/bot%s/%s", "")
	require.NoError(t, err)
	assert.NotNil(t, bot)
}