Function refreshAccessToken

Source

export async function refreshAccessToken(): Promise<SpotifyTokenRefreshResponse> {
  ensureCredentialsSet();

  if (!refreshToken) {
    throw new Error("No refresh token available");
  }

  try {
    const { clientId, clientSecret } = getCredentials();
    const response = await axios.post(
      TOKEN_URL,
      querystring.stringify({
        grant_type: "refresh_token",
        refresh_token: refreshToken,
        client_id: clientId,
        client_secret: clientSecret,
      }),
      {
        headers: {
          "Content-Type": "application/x-www-form-urlencoded",
        },
      },
    );

    const tokenResponse = response.data as SpotifyTokenRefreshResponse;
    const new_refresh_token = tokenResponse.refresh_token || refreshToken;

    // Update tokens
    setTokens(
      tokenResponse.access_token,
      new_refresh_token,
      tokenResponse.expires_in,
    );

    saveLog("Successfully refreshed access token", "DEBUG");
    return tokenResponse;
  } catch (error: unknown) {
    const err = error as Error;
    saveLog(`Failed to refresh access token: ${err.message}`, "ERROR");
    throw new Error(`Failed to refresh access token: ${err.message}`);
  }
}
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