feat: reactivate and fully implement order book filter functionality

lib/features/home/providers/home_order_providers.dart

@@ -7,20 +7,71 @@ import 'package:mostro_mobile/shared/providers/order_repository_provider.dart';
 
 final homeOrderTypeProvider = StateProvider((ref) => OrderType.sell);
 
+// Filter state providers
+final currencyFilterProvider = StateProvider<List<String>>((ref) => []);
+final paymentMethodFilterProvider = StateProvider<List<String>>((ref) => []);
+final ratingFilterProvider = StateProvider<({double min, double max})>((ref) => (min: 0.0, max: 5.0));
+final premiumRangeFilterProvider = StateProvider<({double min, double max})>((ref) => (min: -10.0, max: 10.0));
+
 final filteredOrdersProvider = Provider<List<NostrEvent>>((ref) {
   final allOrdersAsync = ref.watch(orderEventsProvider);
   final orderType = ref.watch(homeOrderTypeProvider);
+  final selectedCurrencies = ref.watch(currencyFilterProvider);
+  final selectedPaymentMethods = ref.watch(paymentMethodFilterProvider);
+  final ratingRange = ref.watch(ratingFilterProvider);
+  final premiumRange = ref.watch(premiumRangeFilterProvider);
 
   return allOrdersAsync.maybeWhen(
     data: (allOrders) {
       allOrders
           .sort((o1, o2) => o1.expirationDate.compareTo(o2.expirationDate));
 
-      final filtered = allOrders.reversed
+      var filtered = allOrders.reversed
           .where((o) => o.orderType == orderType)
-          .where((o) => o.status == Status.pending)
-          .toList();
-      return filtered;
+          .where((o) => o.status == Status.pending);
+
+      // Apply currency filter
+      if (selectedCurrencies.isNotEmpty) {
+        filtered = filtered.where((o) => 
+          o.currency != null && selectedCurrencies.contains(o.currency!)
+        );
+      }
+
+      // Apply payment method filter
+      if (selectedPaymentMethods.isNotEmpty) {
+        final methodsLower = selectedPaymentMethods
+            .where((m) => m.trim().isNotEmpty)
+            .map((m) => m.toLowerCase())
+            .toSet();
+        filtered = filtered.where((o) {
+          final pms = o.paymentMethods;
+          if (pms.isEmpty) return false;
+          return pms.any((pm) {
+            final pmLower = pm.toLowerCase();
+            return methodsLower.any(pmLower.contains);
+          });
+        });
+      }
+
+      // Apply rating filter
+      if (ratingRange.min > 0.0 || ratingRange.max < 5.0) {
+        filtered = filtered.where((o) => 
+          o.rating != null && 
+          o.rating!.totalRating >= ratingRange.min &&
+          o.rating!.totalRating <= ratingRange.max
+        );
+      }
+
+      // Apply premium/discount filter
+      if (premiumRange.min > -10.0 || premiumRange.max < 10.0) {
+        filtered = filtered.where((o) {
+          if (o.premium == null || o.premium!.isEmpty) return false;
+          final premiumValue = double.tryParse(o.premium!) ?? 0.0;
+          return premiumValue >= premiumRange.min && premiumValue <= premiumRange.max;
+        });
+      }
+
+      return filtered.toList();
     },
     orElse: () => [],
   );

lib/features/home/screens/home_screen.dart

@@ -8,6 +8,7 @@ import 'package:mostro_mobile/features/home/widgets/order_list_item.dart';
 import 'package:mostro_mobile/shared/widgets/add_order_button.dart';
 import 'package:mostro_mobile/shared/widgets/bottom_nav_bar.dart';
 import 'package:mostro_mobile/shared/widgets/mostro_app_bar.dart';
+import 'package:mostro_mobile/shared/widgets/order_filter.dart';
 import 'package:mostro_mobile/shared/widgets/custom_drawer_overlay.dart';
 import 'package:mostro_mobile/generated/l10n.dart';
 
@@ -196,7 +197,6 @@ class HomeScreen extends ConsumerWidget {
       child: Align(
         alignment: Alignment.centerLeft,
         child: Container(
-          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
           decoration: BoxDecoration(
             color: AppTheme.backgroundInput,
             borderRadius: BorderRadius.circular(30),
@@ -209,40 +209,62 @@ class HomeScreen extends ConsumerWidget {
               ),
             ],
           ),
-          child: Row(
-            mainAxisSize: MainAxisSize.min,
-            children: [
-              const HeroIcon(
-                HeroIcons.funnel,
-                style: HeroIconStyle.outline,
-                color: Colors.white70,
-                size: 18,
-              ),
-              const SizedBox(width: 8),
-              Text(
-                S.of(context)!.filter,
-                style: const TextStyle(
-                  color: Colors.white70,
-                  fontSize: 13,
-                  fontWeight: FontWeight.w500,
-                  letterSpacing: 0.5,
-                ),
-              ),
-              Container(
-                margin: const EdgeInsets.symmetric(horizontal: 8),
-                height: 16,
-                width: 1,
-                color: Colors.white.withValues(alpha: 0.2),
-              ),
-              Text(
-                S.of(context)!.offersCount(filteredOrders.length.toString()),
-                style: const TextStyle(
-                  color: Colors.grey,
-                  fontSize: 12,
-                  fontWeight: FontWeight.normal,
+          child: Material(
+            color: Colors.transparent,
+            borderRadius: BorderRadius.circular(30),
+            child: InkWell(
+              onTap: () {
+                showDialog<void>(
+                  context: context,
+                  builder: (BuildContext context) {
+                    return const Dialog(
+                      child: OrderFilter(),
+                    );
+                  },
+                );
+              },
+              borderRadius: BorderRadius.circular(30),
+              splashColor: AppTheme.activeColor.withValues(alpha: 0.3),
+              highlightColor: AppTheme.activeColor.withValues(alpha: 0.15),
+              child: Padding(
+                padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+                child: Row(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    const HeroIcon(
+                      HeroIcons.funnel,
+                      style: HeroIconStyle.outline,
+                      color: Colors.white70,
+                      size: 18,
+                    ),
+                    const SizedBox(width: 8),
+                    Text(
+                      S.of(context)!.filter,
+                      style: const TextStyle(
+                        color: Colors.white70,
+                        fontSize: 13,
+                        fontWeight: FontWeight.w500,
+                        letterSpacing: 0.5,
+                      ),
+                    ),
+                    Container(
+                      margin: const EdgeInsets.symmetric(horizontal: 8),
+                      height: 16,
+                      width: 1,
+                      color: Colors.white.withValues(alpha: 0.2),
+                    ),
+                    Text(
+                      S.of(context)!.offersCount(filteredOrders.length.toString()),
+                      style: const TextStyle(
+                        color: Colors.grey,
+                        fontSize: 12,
+                        fontWeight: FontWeight.normal,
+                      ),
+                    ),
+                  ],
                 ),
               ),
-            ],
+            ),
           ),
         ),
       ),

lib/l10n/intl_en.arb

@@ -796,9 +796,20 @@
 
 
   "save": "Save",
+  "apply": "Apply",
   "selectCurrency": "Select Currency",
   "noCurrencySelected": "No currency selected",
 
+  "@_comment_filter_section": "Filter section strings",
+  "rating": "Rating",
+  "reputation": "Reputation",
+  "premiumRange": "Premium/Discount",
+  "discount": "Discount",
+  "premium": "Premium",
+  "clear": "Clear",
+  "min": "Min",
+  "max": "Max",
+
   "@_comment_timeout_messages": "Timeout notification messages",
   "orderTimeoutTaker": "You didn't respond in time. The order will be republished",
   "orderTimeoutMaker": "Your counterpart didn't respond in time. The order will be republished",

lib/l10n/intl_es.arb

@@ -823,6 +823,17 @@
   "add": "Agregar",
 
   "save": "Guardar",
+  "apply": "Aplicar",
+
+  "@_comment_filter_section": "Strings de la sección de filtros",
+  "rating": "Calificación",
+  "reputation": "Reputación",
+  "premiumRange": "Prima/Descuento",
+  "discount": "Descuento",
+  "premium": "Prima",
+  "clear": "Limpiar",
+  "min": "Mín",
+  "max": "Máx",
   "selectCurrency": "Seleccionar Moneda",
   "noCurrencySelected": "Ninguna moneda seleccionada",
 

lib/l10n/intl_it.arb

@@ -831,6 +831,17 @@
   "add": "Aggiungi",
 
   "save": "Salva",
+  "apply": "Applica",
+
+  "@_comment_filter_section": "Stringhe della sezione filtri",
+  "rating": "Valutazione",
+  "reputation": "Reputazione",
+  "premiumRange": "Premio/Sconto",
+  "discount": "Sconto",
+  "premium": "Premio",
+  "clear": "Cancella",
+  "min": "Min",
+  "max": "Max",
   "selectCurrency": "Seleziona Valuta",
   "noCurrencySelected": "Nessuna valuta selezionata",