Function generateWorkflowDiffSummary

apps/sim/lib/workflows/comparison/compare.ts:73–404

(
  currentState: WorkflowState,
  previousState: WorkflowState | null
)

 * Generate a detailed diff summary between two workflow states
 */
export function generateWorkflowDiffSummary(
  currentState: WorkflowState,
  previousState: WorkflowState | null
): WorkflowDiffSummary {
  const result: WorkflowDiffSummary = {
    addedBlocks: [],
    removedBlocks: [],
    modifiedBlocks: [],
    edgeChanges: { added: 0, removed: 0, addedDetails: [], removedDetails: [] },
    loopChanges: { added: 0, removed: 0, modified: 0 },
    parallelChanges: { added: 0, removed: 0, modified: 0 },
    variableChanges: {
      added: 0,
      removed: 0,
      modified: 0,
      addedNames: [],
      removedNames: [],
      modifiedNames: [],
    },
    hasChanges: false,
  }

  if (!previousState) {
    const currentBlocks = currentState.blocks || {}
    for (const [id, block] of Object.entries(currentBlocks)) {
      result.addedBlocks.push({
        id,
        type: block.type,
        name: block.name,
      })
    }

    const edges = currentState.edges || []
    result.edgeChanges.added = edges.length
    for (const edge of edges) {
      const sourceBlock = currentBlocks[edge.source]
      const targetBlock = currentBlocks[edge.target]
      result.edgeChanges.addedDetails.push({
        sourceName: sourceBlock?.name || sourceBlock?.type || edge.source,
        targetName: targetBlock?.name || targetBlock?.type || edge.target,
      })
    }

    result.loopChanges.added = Object.keys(currentState.loops || {}).length
    result.parallelChanges.added = Object.keys(currentState.parallels || {}).length

    const variables = currentState.variables || {}
    const varEntries = Object.entries(variables)
    result.variableChanges.added = varEntries.length
    for (const [id, variable] of varEntries) {
      result.variableChanges.addedNames.push((variable as { name?: string }).name || id)
    }

    result.hasChanges = true
    return result
  }

  const currentBlocks = currentState.blocks || {}