Refactor code structure and remove redundant changes

src-old/lib/deletionDialogMachine.ts

@@ -0,0 +1,91 @@
+export type DeletionStep = 'warning' | 'confirm' | 'code';
+
+export type DeletionDialogState = {
+  step: DeletionStep;
+  confirmationCode: string;
+  codeReceived: boolean;
+  scheduledDate: string;
+  isLoading: boolean;
+  error: string | null;
+};
+
+export type DeletionDialogAction =
+  | { type: 'CONTINUE_TO_CONFIRM' }
+  | { type: 'GO_BACK_TO_WARNING' }
+  | { type: 'REQUEST_DELETION'; payload: { scheduledDate: string } }
+  | { type: 'UPDATE_CODE'; payload: { code: string } }
+  | { type: 'TOGGLE_CODE_RECEIVED' }
+  | { type: 'SET_LOADING'; payload: boolean }
+  | { type: 'SET_ERROR'; payload: string | null }
+  | { type: 'RESET' };
+
+export const initialState: DeletionDialogState = {
+  step: 'warning',
+  confirmationCode: '',
+  codeReceived: false,
+  scheduledDate: '',
+  isLoading: false,
+  error: null
+};
+
+export function deletionDialogReducer(
+  state: DeletionDialogState,
+  action: DeletionDialogAction
+): DeletionDialogState {
+  switch (action.type) {
+    case 'CONTINUE_TO_CONFIRM':
+      return { ...state, step: 'confirm' };
+      
+    case 'GO_BACK_TO_WARNING':
+      return { ...state, step: 'warning', error: null };
+      
+    case 'REQUEST_DELETION':
+      return {
+        ...state,
+        step: 'code',
+        scheduledDate: action.payload.scheduledDate,
+        isLoading: false,
+        error: null
+      };
+      
+    case 'UPDATE_CODE':
+      // Only allow digits, max 6
+      const sanitized = action.payload.code.replace(/\D/g, '').slice(0, 6);
+      return { ...state, confirmationCode: sanitized };
+      
+    case 'TOGGLE_CODE_RECEIVED':
+      return { ...state, codeReceived: !state.codeReceived };
+      
+    case 'SET_LOADING':
+      return { ...state, isLoading: action.payload };
+      
+    case 'SET_ERROR':
+      return { ...state, error: action.payload, isLoading: false };
+      
+    case 'RESET':
+      return initialState;
+      
+    default:
+      // Exhaustive check
+      const _exhaustive: never = action;
+      return state;
+  }
+}
+
+// Validation helpers
+export const canProceedToConfirm = (state: DeletionDialogState): boolean => {
+  return state.step === 'warning' && !state.isLoading;
+};
+
+export const canRequestDeletion = (state: DeletionDialogState): boolean => {
+  return state.step === 'confirm' && !state.isLoading;
+};
+
+export const canConfirmDeletion = (state: DeletionDialogState): boolean => {
+  return (
+    state.step === 'code' &&
+    state.confirmationCode.length === 6 &&
+    state.codeReceived &&
+    !state.isLoading
+  );
+};