Refactor code structure and remove redundant changes

src-old/lib/sessionFlags.ts

@@ -0,0 +1,83 @@
+/**
+ * Type-safe session storage management for authentication flows
+ */
+
+export const SessionFlags = {
+  MFA_STEP_UP_REQUIRED: 'mfa_step_up_required',
+  MFA_INTENDED_PATH: 'mfa_intended_path',
+  MFA_CHALLENGE_ID: 'mfa_challenge_id',
+  AUTH_METHOD: 'auth_method',
+} as const;
+
+export type SessionFlagKey = typeof SessionFlags[keyof typeof SessionFlags];
+
+/**
+ * Set the MFA step-up required flag
+ */
+export function setStepUpRequired(required: boolean, intendedPath?: string): void {
+  if (required) {
+    sessionStorage.setItem(SessionFlags.MFA_STEP_UP_REQUIRED, 'true');
+    if (intendedPath) {
+      sessionStorage.setItem(SessionFlags.MFA_INTENDED_PATH, intendedPath);
+    }
+  } else {
+    clearStepUpFlags();
+  }
+}
+
+/**
+ * Check if MFA step-up is required
+ */
+export function getStepUpRequired(): boolean {
+  return sessionStorage.getItem(SessionFlags.MFA_STEP_UP_REQUIRED) === 'true';
+}
+
+/**
+ * Get the intended path after MFA verification
+ */
+export function getIntendedPath(): string {
+  return sessionStorage.getItem(SessionFlags.MFA_INTENDED_PATH) || '/';
+}
+
+/**
+ * Clear all MFA step-up flags
+ */
+export function clearStepUpFlags(): void {
+  sessionStorage.removeItem(SessionFlags.MFA_STEP_UP_REQUIRED);
+  sessionStorage.removeItem(SessionFlags.MFA_INTENDED_PATH);
+  sessionStorage.removeItem(SessionFlags.MFA_CHALLENGE_ID);
+}
+
+/**
+ * Store the authentication method used
+ */
+export function setAuthMethod(method: 'password' | 'oauth' | 'magiclink'): void {
+  sessionStorage.setItem(SessionFlags.AUTH_METHOD, method);
+}
+
+/**
+ * Get the authentication method used
+ */
+export function getAuthMethod(): 'password' | 'oauth' | 'magiclink' | null {
+  const method = sessionStorage.getItem(SessionFlags.AUTH_METHOD);
+  if (method === 'password' || method === 'oauth' || method === 'magiclink') {
+    return method;
+  }
+  return null;
+}
+
+/**
+ * Clear the authentication method
+ */
+export function clearAuthMethod(): void {
+  sessionStorage.removeItem(SessionFlags.AUTH_METHOD);
+}
+
+/**
+ * Clear all authentication-related session flags
+ */
+export function clearAllAuthFlags(): void {
+  Object.values(SessionFlags).forEach(flag => {
+    sessionStorage.removeItem(flag);
+  });
+}