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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: f5c79efc-51d8-4913-8961-701522797f9e
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September 14, 2026 23:42
Signed-off-by: Babak K. Shandiz <babakks@github.com>
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Copilot review overview
🟡 Changes recommended
Standard invalid_grant refresh failures are not mapped to ErrRefreshTokenInvalid, and the README example references unavailable API methods.
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Review tier: Lite
Findings: 1
Open (2)
What changed in this PR
Adds OAuth token refresh support, token expiry metadata, and offline_access opt-in for web and device flows.
Changes:
- Adds refresh-token exchange and invalid-token error handling.
- Parses access and refresh token expiry values.
- Updates flows, documentation, examples, tests, and CI workflows.
| File | Reviewed change |
|---|---|
refresh.go |
Implements token refresh exchanges. |
refresh_test.go |
Tests refresh behavior and errors. |
README.md |
Documents refresh usage. |
oauth.go |
Adds refresh-token flow configuration. |
oauth_webapp.go |
Adds offline_access to web scopes. |
oauth_test.go |
Tests scope handling. |
oauth_device.go |
Adds offline_access to device scopes. |
examples_test.go |
Adds a refresh example. |
api/access_token.go |
Parses token expiry metadata. |
api/access_token_test.go |
Tests expiry parsing. |
.github/workflows/lint.yml |
Updates lint workflow dependencies. |
.github/workflows/ci.yml |
Updates CI actions and Go versions. |
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| token, err := resp.AccessToken() | ||
| if err != nil { | ||
| var apiError *api.Error | ||
| if errors.As(err, &apiError) && apiError.Code == "bad_refresh_token" { |
| Before using an expired token, exchange its refresh token and persist the returned token pair: | ||
|
|
||
| ```go | ||
| if token.IsExpired() && token.CanRefresh() { |
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Description
Adds explicit OAuth token refresh support, consumed by the refreshable (short-lived) token stack in
cli/cli.Refreshfunction (refresh.go) exchanges a refresh token at the token endpoint for a new access and refresh token pair. It comes withRefreshOptionsand a distinctErrRefreshTokenInvalid, so callers can tell a permanently rejected refresh token from a transient failure and avoid pointless retries.api.AccessTokengainsExpiresInandRefreshTokenExpiresIn, parsed from the token response, so callers know when the access and refresh tokens expire. Zero means the server returned no expiry metadata.Flow.RequestRefreshTokenopts an authorization into an expiring access token plus a refresh token by adding theoffline_accessscope. Servers that do not support it simply return an ordinary non-expiring token with no refresh token.How did you test this change?
Unit tests:
refresh_test.gocovers the refresh exchange (success, empty and rejected refresh tokens, error mapping);access_token_test.goandoauth_test.gocover expiry parsing and theoffline_accessopt-in. The README and runnable examples are updated. Also bumps workflow action versions.