chore: import upstream snapshot with attribution

apps/sim/lib/workflows/blocks/deterministic-dimensions.ts

@@ -0,0 +1,47 @@
+import { BLOCK_DIMENSIONS } from '@sim/workflow-renderer'
+import type { BlockConfig } from '@/blocks/types'
+
+interface WorkflowBlockDimensionsInput {
+  blockType: string
+  category: BlockConfig['category']
+  displayTriggerMode: boolean
+  visibleSubBlockCount: number
+  conditionRowCount?: number
+  routerRowCount?: number
+}
+
+export function calculateWorkflowBlockDimensions({
+  blockType,
+  category,
+  displayTriggerMode,
+  visibleSubBlockCount,
+  conditionRowCount = 0,
+  routerRowCount = 0,
+}: WorkflowBlockDimensionsInput): { width: number; height: number } {
+  const shouldShowDefaultHandles =
+    category !== 'triggers' && blockType !== 'starter' && !displayTriggerMode
+  const defaultHandlesRow = shouldShowDefaultHandles ? 1 : 0
+
+  let rowsCount = 0
+  if (blockType === 'condition') {
+    rowsCount = conditionRowCount + defaultHandlesRow
+  } else if (blockType === 'router_v2') {
+    rowsCount = 1 + routerRowCount + defaultHandlesRow
+  } else {
+    rowsCount = visibleSubBlockCount + defaultHandlesRow
+  }
+
+  const hasContentBelowHeader = rowsCount > 0
+  const contentHeight = hasContentBelowHeader
+    ? BLOCK_DIMENSIONS.WORKFLOW_CONTENT_PADDING + rowsCount * BLOCK_DIMENSIONS.WORKFLOW_ROW_HEIGHT
+    : 0
+  const height = Math.max(
+    BLOCK_DIMENSIONS.HEADER_HEIGHT + contentHeight,
+    BLOCK_DIMENSIONS.MIN_HEIGHT
+  )
+
+  return {
+    width: BLOCK_DIMENSIONS.FIXED_WIDTH,
+    height,
+  }
+}