Function createOpenCodeZenRequest

web/src/llm-api/opencode-zen.ts:110–142

(params: {
  body: ChatCompletionRequestBody
  originalModel: string
  fetch: typeof globalThis.fetch
})

}

function createOpenCodeZenRequest(params: {
  body: ChatCompletionRequestBody
  originalModel: string
  fetch: typeof globalThis.fetch
}) {
  const { body, originalModel, fetch } = params
  const opencodeBody: Record<string, unknown> = {
    ...body,
    messages: normalizeOpenCodeZenMessages(body.messages ?? []),
    tools: body.tools?.map(normalizeOpenCodeZenTool),
    model: getOpenCodeZenModelId(originalModel),
  }

  delete opencodeBody.provider
  delete opencodeBody.transforms
  delete opencodeBody.codebuff_metadata
  delete opencodeBody.usage

  if (opencodeBody.stream) {
    opencodeBody.stream_options = { include_usage: true }
  }

  return fetch(`${OPENCODE_ZEN_BASE_URL}/chat/completions`, {
    method: 'POST',
    headers: {
      Authorization: `Bearer ${getOpenCodeZenApiKey()}`,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify(opencodeBody),
    // @ts-expect-error - dispatcher is a valid undici option not in fetch types
    dispatcher: opencodeZenAgent,
  })
}

function normalizeOpenCodeZenMessages(
  messages: ChatCompletionRequestBody['messages'],