♻️ (viewer) Remove barrel exports and flatten folder arch

apps/viewer/src/features/blocks/logic/setVariable/executeSetVariable.ts

@@ -0,0 +1,50 @@
+import { SessionState, SetVariableBlock, Variable } from '@typebot.io/schemas'
+import { byId } from '@typebot.io/lib'
+import { ExecuteLogicResponse } from '@/features/chat/types'
+import { updateVariables } from '@/features/variables/updateVariables'
+import { parseVariables } from '@/features/variables/parseVariables'
+import { parseGuessedValueType } from '@/features/variables/parseGuessedValueType'
+
+export const executeSetVariable = async (
+  state: SessionState,
+  block: SetVariableBlock
+): Promise<ExecuteLogicResponse> => {
+  const { variables } = state.typebot
+  if (!block.options?.variableId)
+    return {
+      outgoingEdgeId: block.outgoingEdgeId,
+    }
+  const evaluatedExpression = block.options.expressionToEvaluate
+    ? evaluateSetVariableExpression(variables)(
+        block.options.expressionToEvaluate
+      )
+    : undefined
+  const existingVariable = variables.find(byId(block.options.variableId))
+  if (!existingVariable) return { outgoingEdgeId: block.outgoingEdgeId }
+  const newVariable = {
+    ...existingVariable,
+    value: evaluatedExpression,
+  }
+  const newSessionState = await updateVariables(state)([newVariable])
+  return {
+    outgoingEdgeId: block.outgoingEdgeId,
+    newSessionState,
+  }
+}
+
+const evaluateSetVariableExpression =
+  (variables: Variable[]) =>
+  (str: string): unknown => {
+    const isSingleVariable =
+      str.startsWith('{{') && str.endsWith('}}') && str.split('{{').length === 2
+    if (isSingleVariable) return parseVariables(variables)(str)
+    const evaluating = parseVariables(variables, { fieldToParse: 'id' })(
+      str.includes('return ') ? str : `return ${str}`
+    )
+    try {
+      const func = Function(...variables.map((v) => v.id), evaluating)
+      return func(...variables.map((v) => parseGuessedValueType(v.value)))
+    } catch (err) {
+      return parseVariables(variables)(str)
+    }
+  }