122 lines
3.3 KiB
Markdown
122 lines
3.3 KiB
Markdown
# Golang bindings for the Telegram Bot API
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[](https://pkg.go.dev/github.com/go-telegram-bot-api/telegram-bot-api/v5)
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[](https://github.com/go-telegram-bot-api/telegram-bot-api/actions/workflows/test.yml)
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All methods are fairly self-explanatory, and reading the [godoc](https://pkg.go.dev/github.com/go-telegram-bot-api/telegram-bot-api/v5) page should
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explain everything. If something isn't clear, open an issue or submit
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a pull request.
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There are more tutorials and high-level information on the website, [go-telegram-bot-api.dev](https://go-telegram-bot-api.dev).
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The scope of this project is just to provide a wrapper around the API
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without any additional features. There are other projects for creating
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something with plugins and command handlers without having to design
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all that yourself.
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Join [the development group](https://telegram.me/go_telegram_bot_api) if
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you want to ask questions or discuss development.
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## Example
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First, ensure the library is installed and up to date by running
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`go get -u github.com/go-telegram-bot-api/telegram-bot-api/v5`.
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This is a very simple bot that just displays any gotten updates,
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then replies it to that chat.
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```go
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package main
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import (
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"log"
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tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
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)
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func main() {
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bot, err := tgbotapi.NewBotAPI("MyAwesomeBotToken")
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if err != nil {
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log.Panic(err)
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}
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bot.Debug = true
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log.Printf("Authorized on account %s", bot.Self.UserName)
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u := tgbotapi.NewUpdate(0)
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u.Timeout = 60
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updates := bot.GetUpdatesChan(u)
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for update := range updates {
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if update.Message != nil { // If we got a message
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log.Printf("[%s] %s", update.Message.From.UserName, update.Message.Text)
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msg := tgbotapi.NewMessage(update.Message.Chat.ID, update.Message.Text)
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msg.ReplyToMessageID = update.Message.MessageID
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bot.Send(msg)
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}
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}
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}
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```
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If you need to use webhooks (if you wish to run on Google App Engine),
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you may use a slightly different method.
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```go
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package main
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import (
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"log"
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"net/http"
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"github.com/go-telegram-bot-api/telegram-bot-api/v5"
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)
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func main() {
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bot, err := tgbotapi.NewBotAPI("MyAwesomeBotToken")
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if err != nil {
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log.Fatal(err)
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}
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bot.Debug = true
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log.Printf("Authorized on account %s", bot.Self.UserName)
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wh, _ := tgbotapi.NewWebhookWithCert("https://www.example.com:8443/"+bot.Token, "cert.pem")
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_, err = bot.Request(wh)
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if err != nil {
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log.Fatal(err)
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}
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info, err := bot.GetWebhookInfo()
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if err != nil {
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log.Fatal(err)
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}
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if info.LastErrorDate != 0 {
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log.Printf("Telegram callback failed: %s", info.LastErrorMessage)
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}
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updates := bot.ListenForWebhook("/" + bot.Token)
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go http.ListenAndServeTLS("0.0.0.0:8443", "cert.pem", "key.pem", nil)
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for update := range updates {
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log.Printf("%+v\n", update)
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}
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}
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```
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If you need, you may generate a self-signed certificate, as this requires
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HTTPS / TLS. The above example tells Telegram that this is your
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certificate and that it should be trusted, even though it is not
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properly signed.
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openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 3560 -subj "//O=Org\CN=Test" -nodes
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Now that [Let's Encrypt](https://letsencrypt.org) is available,
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you may wish to generate your free TLS certificate there.
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