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oauth.go
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55 lines (45 loc) · 1.09 KB
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package main
import (
"context"
"log/slog"
"time"
"github.com/green-ecolution/backend/pkg/plugin"
"golang.org/x/oauth2"
)
var _ oauth2.TokenSource = (*TokenSource)(nil)
type TokenSource struct {
refreshTokenFn func(context.Context) (*plugin.Token, error)
token *oauth2.Token
}
func NewTokenSource(
refreshTokenFn func(context.Context) (*plugin.Token, error),
initToken *oauth2.Token,
) *TokenSource {
return &TokenSource{
refreshTokenFn: refreshTokenFn,
token: initToken,
}
}
func (t *TokenSource) Token() (*oauth2.Token, error) {
if t.token.Expiry.Before(time.Now()) {
slog.Info("refresh token")
newToken, err := t.refreshTokenFn(context.Background())
if err != nil {
return nil, err
}
oauthToken, err := t.mapToken(newToken)
if err != nil {
return nil, err
}
t.token = oauthToken
}
return t.token, nil
}
func (t *TokenSource) mapToken(token *plugin.Token) (*oauth2.Token, error) {
return &oauth2.Token{
AccessToken: token.AccessToken,
RefreshToken: token.RefreshToken,
Expiry: token.Expiry,
TokenType: token.TokenType,
}, nil
}