Function handleLine

web/src/llm-api/openrouter.ts:546–621

({
  userId,
  stripeCustomerId,
  agentId,
  clientId,
  clientRequestId,
  costMode,
  byok,
  startTime,
  request,
  line,
  state,
  logger,
  insertMessage,
}: {
  userId: string
  stripeCustomerId?: string | null
  agentId: string
  clientId: string | null
  clientRequestId: string | null
  costMode: string | undefined
  byok: boolean
  startTime: Date
  request: unknown
  line: string
  state: StreamState
  logger: Logger
  insertMessage: InsertMessageBigqueryFn
})

}

async function handleLine({
  userId,
  stripeCustomerId,
  agentId,
  clientId,
  clientRequestId,
  costMode,
  byok,
  startTime,
  request,
  line,
  state,
  logger,
  insertMessage,
}: {
  userId: string
  stripeCustomerId?: string | null
  agentId: string
  clientId: string | null
  clientRequestId: string | null
  costMode: string | undefined
  byok: boolean
  startTime: Date
  request: unknown
  line: string
  state: StreamState
  logger: Logger
  insertMessage: InsertMessageBigqueryFn
}): Promise<LineResult> {
  if (!line.startsWith('data: ')) {
    return { state }
  }

  const raw = line.slice('data: '.length)
  if (raw === '[DONE]\n') {
    return { state }
  }

  // Parse the string into an object
  let obj
  try {
    obj = JSON.parse(raw)
  } catch (error) {
    logger.warn(
      { error: getErrorObject(error, { includeRawError: true }) },
      'Received non-JSON OpenRouter response',
    )
    return { state }
  }

  // Extract usage
  const parsed = OpenRouterStreamChatCompletionChunkSchema.safeParse(obj)
  if (!parsed.success) {
    logger.warn(
      { error: getErrorObject(parsed.error, { includeRawError: true }) },
      'Unable to parse OpenRouter response',
    )
    return { state }