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[add] Simulate Telegram OAuth2 login #796

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[add] Simulate Telegram OAuth2 login #796

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16 changes: 16 additions & 0 deletions telegram/telegram.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,16 @@
package telegram

import "golang.org/x/oauth2"

var Endpoint = oauth2.Endpoint{
AuthURL: "https://oauth.telegram.org/auth",
}

func SetTelegramAuthStyle(botID string, originDomain string, redirectURL string) []oauth2.AuthCodeOption {
return []oauth2.AuthCodeOption{
oauth2.SetAuthURLParam("bot_id", botID),
oauth2.SetAuthURLParam("origin", originDomain),
oauth2.SetAuthURLParam("return_to", redirectURL),
oauth2.SetAuthURLParam("request_access", "write&embed=0"),
}
}
6 changes: 6 additions & 0 deletions token.go
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ package oauth2

import (
"context"
"errors"
"fmt"
"net/http"
"net/url"
Expand Down Expand Up @@ -172,6 +173,11 @@ func tokenFromInternal(t *internal.Token) *Token {
// This token is then mapped from *internal.Token into an *oauth2.Token which is returned along
// with an error.
func retrieveToken(ctx context.Context, c *Config, v url.Values) (*Token, error) {

if c.Endpoint.TokenURL == "" {
return nil, errors.New("oauth2: no token endpoint")
}

tk, err := internal.RetrieveToken(ctx, c.ClientID, c.ClientSecret, c.Endpoint.TokenURL, v, internal.AuthStyle(c.Endpoint.AuthStyle), c.authStyleCache.Get())
if err != nil {
if rErr, ok := err.(*internal.RetrieveError); ok {
Expand Down