fix saving and display of stocks

lib/tables/prescriptions.dart

@@ -0,0 +1,27 @@
+import 'package:supabase_flutter/supabase_flutter.dart';
+import 'package:uuid/uuid.dart';
+
+class Prescriptions {
+  final SupabaseClient _supabase = Supabase.instance.client;
+
+  Future<List> getPrescriptions(String uuid) async {
+    try {
+      final data = await _supabase.from('prescriptions').select('prescriptions_uuid').eq('user_id', uuid);
+      return data.toList();
+    } catch (e) {
+      return [];
+    }
+  }
+
+  Future<bool> postPrescription(String userId, String medicineUuid) async {
+    try {
+      final prescriptionUUID = Uuid().v4();
+      await _supabase
+          .from('prescriptions')
+          .insert({'prescriptions_uuid': prescriptionUUID, 'user_id': userId, 'ref_medicine_uuid': medicineUuid});
+      return true;
+    } catch (e) {
+      return false;
+    }
+  }
+}

lib/tables/ref_medicines.dart

@@ -90,7 +90,7 @@ class RefMedicines {
     final medicine = {
       'ref_medicines_uuid': uuid,
       'medicine_name': name,
-      'ref_manufactorers_uuid': muuid,
+      'ref_manufacturers_uuid': muuid,
       'ref_generic_names_uuid': guuid,
       'ref_types_uuid': tuuid,
       'barcode': barcode

lib/tables/stocks.dart

@@ -29,6 +29,33 @@ class Stocks {
     }
   }
 
+  Future<List> getListWithUUID() async {
+    List<Map<String, dynamic>> stockData = [];
+
+    try {
+      final data = await _supabase
+          .from('stocks')
+          .select(
+              'ref_medicines_uuid, ref_medicines(medicine_name, ref_generic_names(generic_name)), expiration_date, quantity, price')
+          .order('ref_medicines(medicine_name)', ascending: true);
+
+      for (var item in data) {
+        stockData.add({
+          'uuid': item['ref_medicines_uuid'],
+          'medicine_name': item['ref_medicines']['medicine_name'],
+          'generic_name': item['ref_medicines']['ref_generic_names']['generic_name'],
+          'expiration_date': item['expiration_date'],
+          'quantity': item['quantity'],
+          'price': item['price'],
+        });
+      }
+
+      return stockData;
+    } catch (e) {
+      return [];
+    }
+  }
+
   Future<String> getUUID(String name) async {
     try {
       final medUUID = await _supabase.from('ref_medicines').select('ref_medicines_uuid').eq('medicine_name', name);