Function refreshChatGptOAuthToken

sdk/src/credentials.ts:184–247

(
  clientEnv: ClientEnv = env,
)

let chatGptRefreshPromise: Promise<ChatGptOAuthCredentials | null> | null = null

export const refreshChatGptOAuthToken = async (
  clientEnv: ClientEnv = env,
): Promise<ChatGptOAuthCredentials | null> => {
  if (chatGptRefreshPromise) {
    return chatGptRefreshPromise
  }

  const credentials = getChatGptOAuthCredentials(clientEnv)
  if (!credentials?.refreshToken) {
    return null
  }

  chatGptRefreshPromise = (async () => {
    try {
      const response = await fetch(CHATGPT_OAUTH_TOKEN_URL, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({
          grant_type: 'refresh_token',
          refresh_token: credentials.refreshToken,
          client_id: CHATGPT_OAUTH_CLIENT_ID,
        }),
      })

      if (!response.ok) {
        console.debug(`ChatGPT OAuth token refresh failed (status ${response.status})`)
        return null
      }

      const data = await response.json()

      if (
        typeof data?.access_token !== 'string' ||
        data.access_token.trim().length === 0
      ) {
        console.debug('ChatGPT OAuth token refresh returned empty access token')
        return null
      }

      const expiresIn =
        typeof data.expires_in === 'number' ? data.expires_in * 1000 : 3600 * 1000

      const newCredentials: ChatGptOAuthCredentials = {
        accessToken: data.access_token,
        refreshToken: data.refresh_token ?? credentials.refreshToken,
        expiresAt: Date.now() + expiresIn,
        connectedAt: credentials.connectedAt,
      }

      saveChatGptOAuthCredentials(newCredentials, clientEnv)

      return newCredentials
    } catch (error) {
      console.debug('ChatGPT OAuth token refresh failed:', error instanceof Error ? error.message : String(error))
      return null
    } finally {