Function resolveSubBlockForParam

apps/sim/tools/params.ts:209–249

(
  paramId: string,
  subBlocks: BlockSubBlockConfig[],
  valuesWithOperation: Record<string, unknown>,
  paramType: string
)

}

function resolveSubBlockForParam(
  paramId: string,
  subBlocks: BlockSubBlockConfig[],
  valuesWithOperation: Record<string, unknown>,
  paramType: string
): BlockSubBlockConfig | undefined {
  const blockSubBlocks = subBlocks

  // First pass: find subblock with matching condition
  let fallbackMatch: BlockSubBlockConfig | undefined

  for (const sb of blockSubBlocks) {
    const matches = sb.id === paramId || sb.canonicalParamId === paramId
    if (!matches) continue

    // Remember first match as fallback (for condition-based filtering in UI)
    if (!fallbackMatch) fallbackMatch = sb

    if (
      !sb.condition ||
      evaluateSubBlockCondition(sb.condition as SubBlockCondition, valuesWithOperation)
    ) {
      return sb
    }
  }

  // Return fallback so its condition can be used for UI filtering
  if (fallbackMatch) return fallbackMatch

  // Check if boolean param is part of a checkbox-list
  if (paramType === 'boolean') {
    return blockSubBlocks.find(
      (sb) =>
        sb.type === 'checkbox-list' &&
        Array.isArray(sb.options) &&
        (sb.options as Array<{ id?: string }>).some((opt) => opt.id === paramId)
    )
  }

  return undefined
}

/**
 * Gets all parameters for a tool, categorized by their usage