Initial release of go-telegram

A fully-generated, strongly-typed Go client for the Telegram Bot API.

* 176 methods + 301 types generated from Bot API v10.0
* 1408 auto-generated tests (8 scenarios per method)
* Typed unions throughout — no 'any' in the public surface
* Pluggable HTTP transport and JSON codec (default goccy/go-json)
* Built-in retry middleware honouring Telegram's retry_after
* Generic dispatcher with filters and conversation handlers
* Self-verifying codegen pipeline (regen → audit → emit → run tests)
* 14 example bots covering common patterns

examples/webhook/README.md

@@ -0,0 +1,14 @@
+# webhook
+
+Bot using HTTPS webhooks. Replies to `/ping` with `pong`.
+
+## Run
+
+You need a public HTTPS endpoint pointed at port 8080. For local development use a tunnel like Cloudflare Tunnel or ngrok.
+
+```bash
+export TELEGRAM_BOT_TOKEN=123456:ABC...
+export WEBHOOK_URL=https://your.tunnel.example/bot
+export WEBHOOK_SECRET=randomsecret123
+go run ./examples/webhook
+```

examples/webhook/handlers.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"github.com/lukaszraczylo/go-telegram/api"
+	"github.com/lukaszraczylo/go-telegram/dispatch"
+)
+
+// register wires all handlers onto the router.
+func register(r *dispatch.Router) {
+	r.OnCommand("/ping", handlePing)
+}
+
+func handlePing(c *dispatch.Context, m *api.Message) error {
+	_, err := api.SendMessage(c.Ctx, c.Bot, &api.SendMessageParams{
+		ChatID: api.ChatIDFromInt(m.Chat.ID),
+		Text:   "pong",
+	})
+	return err
+}

examples/webhook/handlers_test.go

@@ -0,0 +1,61 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/lukaszraczylo/go-telegram/api"
+	"github.com/lukaszraczylo/go-telegram/client"
+	"github.com/lukaszraczylo/go-telegram/dispatch"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+type mockDoer struct{ mock.Mock }
+
+func (m *mockDoer) Do(r *http.Request) (*http.Response, error) {
+	args := m.Called(r)
+	if v := args.Get(0); v != nil {
+		return v.(*http.Response), args.Error(1)
+	}
+	return nil, args.Error(1)
+}
+
+func okResp(body string) *http.Response {
+	return &http.Response{
+		StatusCode: 200,
+		Body:       io.NopCloser(bytes.NewBufferString(body)),
+		Header:     http.Header{"Content-Type": []string{"application/json"}},
+	}
+}
+
+const sendMsgResult = `{"ok":true,"result":{"message_id":1,"date":0,"chat":{"id":42,"type":"private"}}}`
+
+func TestHandlePing_RepliesWithPong(t *testing.T) {
+	m := &mockDoer{}
+	m.On("Do", mock.MatchedBy(func(r *http.Request) bool {
+		if !strings.HasSuffix(r.URL.Path, "/sendMessage") {
+			return false
+		}
+		buf := new(bytes.Buffer)
+		_, _ = buf.ReadFrom(r.Body)
+		return strings.Contains(buf.String(), `"pong"`)
+	})).Return(okResp(sendMsgResult), nil)
+
+	bot := client.New("test:token", client.WithHTTPClient(m))
+	msg := &api.Message{
+		MessageID: 1,
+		Chat:      api.Chat{ID: 42, Type: string(api.ChatTypePrivate)},
+		From:      &api.User{ID: 7, FirstName: "Alice"},
+		Text:      "/ping",
+	}
+	upd := &api.Update{UpdateID: 1, Message: msg}
+	c := dispatch.NewContext(context.Background(), bot, upd)
+
+	require.NoError(t, handlePing(c, msg))
+	m.AssertExpectations(t)
+}

examples/webhook/main.go

@@ -0,0 +1,75 @@
+// Package main is a webhook bot. Run with:
+//
+//	TELEGRAM_BOT_TOKEN=xxx \
+//	WEBHOOK_URL=https://example.com/bot \
+//	WEBHOOK_SECRET=somethingrandom \
+//	go run ./examples/webhook
+//
+// The bot sets its webhook to WEBHOOK_URL on startup, listens on :8080,
+// and clears the webhook on shutdown.
+package main
+
+import (
+	"context"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"github.com/lukaszraczylo/go-telegram/api"
+	"github.com/lukaszraczylo/go-telegram/client"
+	"github.com/lukaszraczylo/go-telegram/dispatch"
+	"github.com/lukaszraczylo/go-telegram/transport"
+)
+
+func main() {
+	token := os.Getenv("TELEGRAM_BOT_TOKEN")
+	url := os.Getenv("WEBHOOK_URL")
+	secret := os.Getenv("WEBHOOK_SECRET")
+	if token == "" || url == "" {
+		log.Fatal("TELEGRAM_BOT_TOKEN and WEBHOOK_URL required")
+	}
+
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+
+	bot := client.New(token,
+		client.WithHTTPClient(client.NewRetryDoer(client.NewDefaultHTTPDoer())))
+
+	if _, err := api.SetWebhook(ctx, bot, &api.SetWebhookParams{
+		URL:         url,
+		SecretToken: secret,
+	}); err != nil {
+		log.Fatalf("setWebhook: %v", err)
+	}
+	defer func() {
+		_, _ = api.DeleteWebhook(context.Background(), bot, &api.DeleteWebhookParams{})
+	}()
+
+	wh := transport.NewWebhookServer(bot)
+	wh.SecretToken = secret
+
+	router := dispatch.New(bot)
+	register(router)
+
+	mux := http.NewServeMux()
+	mux.Handle("/bot", wh)
+	srv := &http.Server{
+		Addr:              ":8080",
+		Handler:           mux,
+		ReadHeaderTimeout: 10 * time.Second,
+	}
+	go func() {
+		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			log.Printf("http server exited: %v", err)
+			stop()
+		}
+	}()
+
+	if err := router.Run(ctx, wh); err != nil && err != context.Canceled {
+		log.Printf("router exited: %v", err)
+	}
+	_ = srv.Shutdown(context.Background())
+}