Function buildCopilotRequestPayload

apps/sim/lib/copilot/chat/payload.ts:249–383

(
  params: BuildPayloadParams,
  options: {
    selectedModel: string
  }
)

 * Build the request payload for the copilot backend.
 */
export async function buildCopilotRequestPayload(
  params: BuildPayloadParams,
  options: {
    selectedModel: string
  }
): Promise<Record<string, unknown>> {
  const {
    message,
    workflowId,
    userId,
    userMessageId,
    mode,
    provider,
    contexts,
    fileAttachments,
    commands,
    chatId,
    prefetch,
    implicitFeedback,
  } = params

  const selectedModel = options.selectedModel

  const effectiveMode = mode === 'agent' ? 'build' : mode
  const transportMode = effectiveMode === 'build' ? 'agent' : effectiveMode

  // Track uploaded files in the DB and build context tags instead of base64 inlining
  const uploadContexts: Array<{ type: string; content: string; tag?: string; path?: string }> = []
  if (chatId && params.workspaceId && fileAttachments && fileAttachments.length > 0) {
    for (const f of fileAttachments) {
      const filename = (f.filename ?? f.name ?? 'file') as string
      const mediaType = (f.media_type ?? f.mimeType ?? 'application/octet-stream') as string
      try {
        const { displayName } = await trackChatUpload(
          params.workspaceId,
          userId,
          chatId,
          f.key,
          filename,
          mediaType,
          f.size
        )
        // Encode the read path per the percent-encoded VFS convention (matches
        // files/ and the uploads glob output). The materialize_file `fileName`
        // arg stays the raw display name — the upload resolver accepts both.
        let encodedUploadName = displayName
        try {
          encodedUploadName = encodeVfsSegment(displayName)
        } catch {
          encodedUploadName = displayName
        }
        const lines = [
          `File "${displayName}" (${mediaType}, ${f.size} bytes) uploaded.`,
          `Read with: read("uploads/${encodedUploadName}")`,
          `To save permanently: materialize_file(fileName: "${displayName}")`,
        ]
        if (displayName.endsWith('.json')) {
          lines.push(