Function prefetchAllMcpResources

src/services/mcp/client.ts:2408–2473

(
  mcpConfigs: Record<string, ScopedMcpServerConfig>,
)

// (connectToServer, fetch*ForClient) is already cached. Memoizing here by
// mcpConfigs object ref leaked — main.tsx creates fresh config objects each call.
export function prefetchAllMcpResources(
  mcpConfigs: Record<string, ScopedMcpServerConfig>,
): Promise<{
  clients: MCPServerConnection[]
  tools: Tool[]
  commands: Command[]
}> {
  return new Promise(resolve => {
    let pendingCount = 0
    let completedCount = 0

    pendingCount = Object.keys(mcpConfigs).length

    if (pendingCount === 0) {
      void resolve({
        clients: [],
        tools: [],
        commands: [],
      })
      return
    }

    const clients: MCPServerConnection[] = []
    const tools: Tool[] = []
    const commands: Command[] = []

    getMcpToolsCommandsAndResources(result => {
      clients.push(result.client)
      tools.push(...result.tools)
      commands.push(...result.commands)

      completedCount++
      if (completedCount >= pendingCount) {
        const commandsMetadataLength = commands.reduce((sum, command) => {
          const commandMetadataLength =
            command.name.length +
            (command.description ?? '').length +
            (command.argumentHint ?? '').length
          return sum + commandMetadataLength
        }, 0)
        logEvent('tengu_mcp_tools_commands_loaded', {
          tools_count: tools.length,
          commands_count: commands.length,
          commands_metadata_length: commandsMetadataLength,
        })

        void resolve({
          clients,
          tools,
          commands,
        })
      }
    }, mcpConfigs).catch(error => {
      logMCPError(
        'prefetchAllMcpResources',
        `Failed to get MCP resources: ${errorMessage(error)}`,
      )
      // Still resolve with empty results