Flask app progress

docker/router-dash/app/action_save_preferences.py

@@ -0,0 +1,48 @@
+from flask import Blueprint, request, session, redirect, flash
+import json
+from auth import require_level
+import sanitize
+
+bp = Blueprint('action_save_preferences', __name__)
+
+DATA_DIR      = '/data'
+ACCOUNTS_FILE = f'{DATA_DIR}/authorized_accounts.json'
+
+
+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_log_in')
+
+    account['timezone'] = tz
+    _save_accounts(data)
+
+    session['timezone'] = tz
+
+    flash('Preferences saved.', 'success')
+    return redirect('/view/view_preferences')