Function handleLine

web/src/llm-api/opencode-zen.ts:480–560

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

}

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

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

  let obj: Record<string, unknown>
  try {
    obj = JSON.parse(raw)
  } catch (error) {
    logger.warn(
      { error: getErrorObject(error, { includeRawError: true }) },
      'Received non-JSON OpenCode Zen response',
    )
    return { state, patchedLine: line }
  }

  if (obj.model) obj.model = originalModel
  if (!obj.provider) obj.provider = 'OpenCode Zen'

  const result = await handleResponse({
    userId,
    stripeCustomerId,
    agentId,
    clientId,
    clientRequestId,