Function exchangeCodeForTokens

packages/opencode/src/plugin/openai/codex.ts:107–123

(code: string, redirectUri: string, pkce: PkceCodes)

}

async function exchangeCodeForTokens(code: string, redirectUri: string, pkce: PkceCodes): Promise<TokenResponse> {
  const response = await fetch(`${ISSUER}/oauth/token`, {
    method: "POST",
    headers: { "Content-Type": "application/x-www-form-urlencoded" },
    body: new URLSearchParams({
      grant_type: "authorization_code",
      code,
      redirect_uri: redirectUri,
      client_id: CLIENT_ID,
      code_verifier: pkce.verifier,
    }).toString(),
  })
  if (!response.ok) {
    throw new Error(`Token exchange failed: ${response.status}`)
  }
  return response.json()
}

async function refreshAccessToken(refreshToken: string, issuer = ISSUER): Promise<TokenResponse> {
  const response = await fetch(`${issuer}/oauth/token`, {