add profile page, privacy options

lib/components/pages/legs.dart

@@ -17,6 +17,8 @@ class _LegsPageState extends State<LegsPage> {
   DateTime? _startDate;
   DateTime? _endDate;
   bool _initialised = false;
+  bool _unallocatedOnly = false;
+  bool _showMoreFilters = false;
 
   @override
   void didChangeDependencies() {
@@ -33,6 +35,7 @@ class _LegsPageState extends State<LegsPage> {
       sortDirection: _sortDirection,
       dateRangeStart: _formatDate(_startDate),
       dateRangeEnd: _formatDate(_endDate),
+      unallocatedOnly: _unallocatedOnly,
     );
   }
 
@@ -44,6 +47,7 @@ class _LegsPageState extends State<LegsPage> {
       dateRangeEnd: _formatDate(_endDate),
       offset: data.legs.length,
       append: true,
+      unallocatedOnly: _unallocatedOnly,
     );
   }
 
@@ -84,6 +88,8 @@ class _LegsPageState extends State<LegsPage> {
       _startDate = null;
       _endDate = null;
       _sortDirection = 0;
+      _unallocatedOnly = false;
+      _showMoreFilters = false;
     });
     _refreshLegs();
   }
@@ -177,8 +183,46 @@ class _LegsPageState extends State<LegsPage> {
                               : _formatDate(_endDate!)!,
                         ),
                       ),
+                      TextButton.icon(
+                        onPressed: () => setState(
+                          () => _showMoreFilters = !_showMoreFilters,
+                        ),
+                        icon: Icon(
+                          _showMoreFilters
+                              ? Icons.expand_less
+                              : Icons.expand_more,
+                        ),
+                        label: Text(
+                          _showMoreFilters ? 'Hide filters' : 'More filters',
+                        ),
+                      ),
                     ],
                   ),
+                  AnimatedCrossFade(
+                    crossFadeState: _showMoreFilters
+                        ? CrossFadeState.showFirst
+                        : CrossFadeState.showSecond,
+                    duration: const Duration(milliseconds: 200),
+                    firstChild: Padding(
+                      padding: const EdgeInsets.only(top: 12.0),
+                      child: Wrap(
+                        spacing: 12,
+                        runSpacing: 12,
+                        children: [
+                          FilterChip(
+                            avatar: const Icon(Icons.flash_off),
+                            label: const Text('Unallocated only'),
+                            selected: _unallocatedOnly,
+                            onSelected: (selected) async {
+                              setState(() => _unallocatedOnly = selected);
+                              await _refreshLegs();
+                            },
+                          ),
+                        ],
+                      ),
+                    ),
+                    secondChild: const SizedBox.shrink(),
+                  ),
                 ],
               ),
             ),