telegram-bot-api/README.md

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# Golang bindings for the Telegram Bot API
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[![GoDoc](https://godoc.org/github.com/go-telegram-bot-api/telegram-bot-api?status.svg)](http://godoc.org/github.com/go-telegram-bot-api/telegram-bot-api)
[![Travis](https://travis-ci.org/go-telegram-bot-api/telegram-bot-api.svg)](https://travis-ci.org/go-telegram-bot-api/telegram-bot-api)
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All methods have been added, and all features should be available.
If you want a feature that hasn't been added yet or something is broken,
open an issue and I'll see what I can do.
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All methods are fairly self explanatory, and reading the godoc page should
explain everything. If something isn't clear, open an issue or submit
a pull request.
The scope of this project is just to provide a wrapper around the API
without any additional features. There are other projects for creating
something with plugins and command handlers without having to design
all that yourself.
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Use `github.com/go-telegram-bot-api/telegram-bot-api` for the latest
version, or use `gopkg.in/telegram-bot-api.v4` for the stable build.
Join [the development group](https://telegram.me/go_telegram_bot_api) if
you want to ask questions or discuss development.
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## Example
This is a very simple bot that just displays any gotten updates,
then replies it to that chat.
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```go
package main
import (
"log"
"gopkg.in/telegram-bot-api.v4"
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)
func main() {
bot, err := tgbotapi.NewBotAPI("MyAwesomeBotToken")
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if err != nil {
log.Panic(err)
}
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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)
u.Timeout = 60
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updates, err := bot.GetUpdatesChan(u)
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for update := range updates {
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if update.Message == nil {
continue
}
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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)
msg.ReplyToMessageID = update.Message.MessageID
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bot.Send(msg)
}
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}
```
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If you need to use webhooks (if you wish to run on Google App Engine),
you may use a slightly different method.
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```go
package main
import (
"gopkg.in/telegram-bot-api.v4"
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"log"
"net/http"
)
func main() {
bot, err := tgbotapi.NewBotAPI("MyAwesomeBotToken")
if err != nil {
log.Fatal(err)
}
bot.Debug = true
log.Printf("Authorized on account %s", bot.Self.UserName)
_, err = bot.SetWebhook(tgbotapi.NewWebhookWithCert("https://www.google.com:8443/"+bot.Token, "cert.pem"))
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if err != nil {
log.Fatal(err)
}
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info, err := bot.GetWebhookInfo()
if err != nil {
log.Fatal(err)
}
if info.LastErrorDate != 0 {
log.Printf("[Telegram callback failed]%s", info.LastErrorMessage)
}
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)
}
}
```
If you need, you may generate a self signed certficate, as this requires
HTTPS / TLS. The above example tells Telegram that this is your
certificate and that it should be trusted, even though it is not
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
Now that [Let's Encrypt](https://letsencrypt.org) has entered public beta,
you may wish to generate your free TLS certificate there.