const DEFAULT_AZURE_OPENAI_API_VERSION = "2024-12-01-preview";

const OPENAI_CODEX_RESPONSES_EMPTY_INPUT_TEXT = " ";

const GEMINI_THOUGHT_SIGNATURE_VALIDATOR_SKIP = "skip_thought_signature_validator";

const log = createSubsystemLogger("openai-transport");

type ReplayableResponseOutputMessage = Omit<ResponseOutputMessage, "id"> & { id?: string };

);

}

function requiresGoogleCompatToolCallThoughtSignature(model: OpenAIModeModel): boolean {

return model.id.toLowerCase().includes("gemini-3");

}

function injectToolCallThoughtSignatures(

outgoingMessages: unknown[],

context: Context,

return;

}

const sigById = new Map<string, string>();

const fallbackSig = requiresGoogleCompatToolCallThoughtSignature(model)

? GEMINI_THOUGHT_SIGNATURE_VALIDATOR_SKIP

: undefined;

for (const msg of context.messages ?? []) {

if ((msg as { role?: string }).role !== "assistant") {

continue;

}

const source = msg as { api?: string; provider?: string; model?: string; content?: unknown };

if (

source.api !== model.api ||

source.provider !== model.provider ||

source.model !== model.id

) {

continue;

}

if (!Array.isArray(source.content)) {

continue;

}

const id = block.id;

const sig = block.thoughtSignature;

if (typeof id === "string" && typeof sig === "string" && sig.length > 0) {

sigById.set(id, sig);

const isSameRoute =

source.api === model.api &&

source.provider === model.provider &&

source.model === model.id;

sigById.set(id, isSameRoute ? sig : (fallbackSig ?? sig));

}

}

}

if (sigById.size === 0) {

if (sigById.size === 0 && !fallbackSig) {

return;

}

for (const message of outgoingMessages) {

if (typeof id !== "string") {

continue;

}

const sig = sigById.get(id);

const sig = sigById.get(id) ?? fallbackSig;

if (!sig) {

continue;

}