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clessy/broker/telegram.go

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package main
import (
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"encoding/json"
"errors"
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"log"
"net/http"
"net/url"
"../tg"
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)
const APIEndpoint = "https://api.telegram.org/"
type Telegram struct {
Token string
}
func mkAPI(token string) *Telegram {
tg := new(Telegram)
tg.Token = token
return tg
}
func (t Telegram) setWebhook(webhook string) {
resp, err := http.PostForm(t.apiURL("setWebhook"), url.Values{"url": {webhook}})
if !checkerr("setWebhook", err) {
defer resp.Body.Close()
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var result tg.APIResponse
err = json.NewDecoder(resp.Body).Decode(&result)
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if err != nil {
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log.Println("Could not read reply: " + err.Error())
return
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}
if result.Ok {
log.Println("Webhook successfully set!")
} else {
log.Printf("Error setting webhook (errcode %d): %s\n", *(result.ErrCode), *(result.Description))
panic(errors.New("Cannot set webhook"))
}
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}
}
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func (t Telegram) apiURL(method string) string {
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return APIEndpoint + "bot" + t.Token + "/" + method
}
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func checkerr(method string, err error) bool {
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if err != nil {
log.Printf("Received error with call to %s: %s\n", method, err.Error())
return true
}
return false
}