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docker/routlin-dash/app/pages/preferences/action.py

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+from flask import Blueprint, request, session, redirect, flash
+import json, bcrypt
+from auth import require_level
+from config_utils import ACCOUNTS_FILE
+import sanitize
+
+bp = Blueprint('preferences', __name__)
+
+
+
+def _load_accounts():
+    try:
+        with open(ACCOUNTS_FILE) as f:
+            return json.load(f)
+    except Exception:
+        return {'accounts': []}
+
+def _save_accounts(data):
+    with open(ACCOUNTS_FILE, 'w') as f:
+        json.dump(data, f, indent=2)
+
+
+@bp.route('/action/save_preferences', methods=['POST'])
+@require_level('viewer')
+def save_preferences():
+    tz = sanitize.timezone(request.form.get('timezone', '').strip())
+
+    if not tz:
+        flash('Timezone is required.', 'error')
+        return redirect('/view/view_preferences')
+
+    email    = session.get('email_address', '').lower()
+    data     = _load_accounts()
+    accounts = data.get('accounts', [])
+    account  = next((a for a in accounts if a.get('email_address', '').lower() == email), None)
+
+    if account is None:
+        flash('Account not found. Please log in again.', 'error')
+        return redirect('/view/view_login')
+
+    account['timezone'] = tz
+    _save_accounts(data)
+
+    session['timezone'] = tz
+
+    flash('Preferences saved.', 'success')
+    return redirect('/view/view_preferences')
+
+
+@bp.route('/action/change_password', methods=['POST'])
+@require_level('viewer')
+def change_password():
+    current_password = request.form.get('current_password', '')
+    new_password     = request.form.get('new_password', '')
+    confirm_password = request.form.get('confirm_password', '')
+
+    if not current_password or not new_password or not confirm_password:
+        flash('All fields are required.', 'error')
+        return redirect('/view/view_preferences')
+
+    if new_password != confirm_password:
+        flash('New passwords do not match.', 'error')
+        return redirect('/view/view_preferences')
+
+    if len(new_password) < 8:
+        flash('New password must be at least 8 characters.', 'error')
+        return redirect('/view/view_preferences')
+
+    email    = session.get('email_address', '').lower()
+    data     = _load_accounts()
+    accounts = data.get('accounts', [])
+    account  = next((a for a in accounts if a.get('email_address', '').lower() == email), None)
+
+    if account is None:
+        flash('Account not found. Please log in again.', 'error')
+        return redirect('/view/view_login')
+
+    stored_hash = account.get('hashed_password', '').encode('utf-8')
+    if not bcrypt.checkpw(current_password.encode('utf-8'), stored_hash):
+        flash('Current password is incorrect.', 'error')
+        return redirect('/view/view_preferences')
+
+    salt   = bcrypt.gensalt()
+    hashed = bcrypt.hashpw(new_password.encode('utf-8'), salt)
+
+    account['hashed_password'] = hashed.decode('utf-8')
+    account['salt']            = salt.decode('utf-8')
+    _save_accounts(data)
+
+    flash('Password changed successfully.', 'success')
+    return redirect('/view/view_preferences')