update

lib/data/database/app_database.dart

@@ -13,12 +13,15 @@ class AppDatabase extends _$AppDatabase {
   AppDatabase() : super(_openConnection());
 
   @override
-  int get schemaVersion => 4;
+  int get schemaVersion => 5;
 
   @override
   MigrationStrategy get migration => MigrationStrategy(
     onUpgrade: (migrator, from, to) async {
+      print('--- DATABASE MIGRATION: from=$from to=$to ---');
+      
       if (from == 1) {
+        print('Migration: Creating accounts table');
         await migrator.createTable(accounts);
         await customStatement(
           'INSERT INTO accounts (name, is_main, currency, sort_order, created_at) '
@@ -26,11 +29,41 @@ class AppDatabase extends _$AppDatabase {
           ['main', 1, 'USD', 0, DateTime.now().millisecondsSinceEpoch],
         );
       }
+      
       if (from == 2) {
+        print('Migration: Adding currency column to accounts');
         await customStatement(
           'ALTER TABLE accounts ADD COLUMN currency TEXT NOT NULL DEFAULT "USD"',
         );
       }
+      
+      // Add account_id column to transactions if upgrading from version < 5
+      if (from < 5) {
+        print('Migration: Adding account_id column to transactions');
+        try {
+          // Check if column exists first
+          final result = await customSelect(
+            'PRAGMA table_info(transactions)',
+          ).get();
+          
+          final hasAccountId = result.any((row) => row.data['name'] == 'account_id');
+          
+          if (!hasAccountId) {
+            print('Migration: account_id column does not exist, adding it now');
+            await customStatement(
+              'ALTER TABLE transactions ADD COLUMN account_id INTEGER NOT NULL DEFAULT 1',
+            );
+            print('Migration: account_id column added successfully');
+          } else {
+            print('Migration: account_id column already exists, skipping');
+          }
+        } catch (e) {
+          print('Migration: Error adding account_id column: $e');
+          // If the column already exists, this will fail, which is fine
+        }
+      }
+      
+      print('--- DATABASE MIGRATION: COMPLETE ---');
     },
   );
 

lib/data/database/app_database.g.dart

@@ -122,7 +122,8 @@ class $TransactionsTable extends Transactions
     aliasedName,
     false,
     type: DriftSqlType.int,
-    requiredDuringInsert: true,
+    requiredDuringInsert: false,
+    defaultValue: const Constant(1),
   );
   static const VerificationMeta _createdAtMeta = const VerificationMeta(
     'createdAt',
@@ -241,8 +242,6 @@ class $TransactionsTable extends Transactions
         _accountIdMeta,
         accountId.isAcceptableOrUnknown(data['account_id']!, _accountIdMeta),
       );
-    } else if (isInserting) {
-      context.missing(_accountIdMeta);
     }
     if (data.containsKey('created_at')) {
       context.handle(
@@ -567,15 +566,14 @@ class TransactionsCompanion extends UpdateCompanion<Transaction> {
     this.lastOccurrence = const Value.absent(),
     this.currency = const Value.absent(),
     this.currencyCode = const Value.absent(),
-    required int accountId,
+    this.accountId = const Value.absent(),
     this.createdAt = const Value.absent(),
     this.rowid = const Value.absent(),
   }) : id = Value(id),
        amount = Value(amount),
        category = Value(category),
        type = Value(type),
-       date = Value(date),
+       date = Value(date);
-       accountId = Value(accountId);
   static Insertable<Transaction> custom({
     Expression<String>? id,
     Expression<double>? amount,
@@ -2324,7 +2322,7 @@ typedef $$TransactionsTableCreateCompanionBuilder =
       Value<DateTime?> lastOccurrence,
       Value<String> currency,
       Value<String> currencyCode,
-      required int accountId,
+      Value<int> accountId,
       Value<DateTime> createdAt,
       Value<int> rowid,
     });
@@ -2608,7 +2606,7 @@ class $$TransactionsTableTableManager
                 Value<DateTime?> lastOccurrence = const Value.absent(),
                 Value<String> currency = const Value.absent(),
                 Value<String> currencyCode = const Value.absent(),
-                required int accountId,
+                Value<int> accountId = const Value.absent(),
                 Value<DateTime> createdAt = const Value.absent(),
                 Value<int> rowid = const Value.absent(),
               }) => TransactionsCompanion.insert(

lib/data/database/tables.dart

@@ -12,7 +12,7 @@ class Transactions extends Table {
   DateTimeColumn get lastOccurrence => dateTime().nullable()();
   TextColumn get currency => text().withDefault(const Constant('\$'))();
   TextColumn get currencyCode => text().withDefault(const Constant('USD'))();
-  IntColumn get accountId => integer()();
+  IntColumn get accountId => integer().withDefault(const Constant(1))();
   DateTimeColumn get createdAt => dateTime().withDefault(currentDateAndTime)();
 
   @override

lib/data/repositories/account_repository.dart

@@ -24,7 +24,7 @@ class AccountRepository {
         // Fallback: insert default account if none exists
         await _db.into(_db.accounts).insert(
               AccountsCompanion.insert(
-                name: 'Main',
+                name: 'main',
                 isMain: const Value(true),
                 currency: const Value('USD'),
                 sortOrder: const Value(0),
@@ -69,7 +69,7 @@ class AccountRepository {
         try {
           await _db.into(_db.accounts).insert(
                 AccountsCompanion.insert(
-                  name: 'Main',
+                  name: 'main',
                   isMain: const Value(true),
                   currency: const Value('USD'),
                   sortOrder: const Value(0),
@@ -103,8 +103,9 @@ class AccountRepository {
   Future<model.Account> getMain() async {
     final row = await (_db.select(_db.accounts)
           ..where((a) => a.isMain.equals(true)))
-        .getSingle();
+        .getSingleOrNull();
 
+    if (row != null) {
       return model.Account(
         id: row.id,
         name: row.name,
@@ -114,4 +115,49 @@ class AccountRepository {
         createdAt: row.createdAt,
       );
     }
+
+    // Fallback if no main account is found
+    final all = await getAll();
+    if (all.isNotEmpty) return all.first;
+
+    // Absolute fallback: create and return a default account
+    try {
+      await _db.into(_db.accounts).insert(
+            AccountsCompanion.insert(
+              name: 'main',
+              isMain: const Value(true),
+              currency: const Value('USD'),
+              sortOrder: const Value(0),
+            ),
+          );
+      
+      // Query the newly created account
+      final newRow = await (_db.select(_db.accounts)
+            ..where((a) => a.isMain.equals(true)))
+          .getSingleOrNull();
+      
+      if (newRow != null) {
+        return model.Account(
+          id: newRow.id,
+          name: newRow.name,
+          isMain: newRow.isMain,
+          sortOrder: newRow.sortOrder,
+          currency: newRow.currency,
+          createdAt: newRow.createdAt,
+        );
+      }
+    } catch (_) {
+      // Ignore insert errors
+    }
+
+    // Final fallback to prevent crashes
+    return model.Account(
+      id: 1,
+      name: 'main',
+      isMain: true,
+      sortOrder: 0,
+      currency: 'USD',
+      createdAt: DateTime.now(),
+    );
+  }
 }

lib/data/repositories/transaction_repository.dart

@@ -56,12 +56,24 @@ class TransactionRepository {
   /// Add transaction
   Future<Result<void>> add(model.Transaction transaction) async {
     return asyncResultOf(() async {
+      print('--- SAVING TRANSACTION: START ---');
+      print('Transaction data: ID=${transaction.id}, Amount=${transaction.amount}, AccId=${transaction.accountId}');
+      print('Category=${transaction.category}, Type=${transaction.type.name}');
+      print('Date=${transaction.date}, Currency=${transaction.currencyCode}');
+      
       final companion = _toCompanion(transaction);
+      print('Companion created successfully');
+      print('Companion: $companion');
+      
       final result = await _db.insertTransaction(companion);
+      print('DB Insert finished. Result Success: ${result.isSuccess}');
 
       if (result.isFailure) {
+        print('!!! DB INSERT FAILED: ${result.errorOrNull}');
         throw Exception(result.errorOrNull);
       }
+      
+      print('--- SAVING TRANSACTION: END (SUCCESS) ---');
     });
   }
 
@@ -173,7 +185,9 @@ class TransactionRepository {
 
   /// Convert app model to companion for insert
   TransactionsCompanion _toCompanion(model.Transaction transaction) {
-    return TransactionsCompanion(
+    try {
+      print('_toCompanion: Creating companion for transaction ${transaction.id}');
+      final companion = TransactionsCompanion(
         id: Value(transaction.id),
         amount: Value(transaction.amount),
         category: Value(transaction.category),
@@ -186,6 +200,14 @@ class TransactionRepository {
         currencyCode: Value(transaction.currencyCode),
         accountId: Value(transaction.accountId),
       );
+      print('_toCompanion: Companion created successfully');
+      return companion;
+    } catch (e, stack) {
+      print('!!! _toCompanion FAILED !!!');
+      print('Error: $e');
+      print('Stack: $stack');
+      rethrow;
+    }
   }
 
   /// Parse recurrence type

lib/features/add_transaction/screen.dart

@@ -154,14 +154,19 @@ class _AddTransactionScreenState extends ConsumerState<AddTransactionScreen>
         : _noteController.text.trim();
 
     try {
-      // Get account ID: use active account or fallback to main
+      print('--- SUBMIT CLICKED ---');
+      print('Amount: $amount, Category: ${state.category}, Type: ${state.type.name}');
+      
       final activeAccount = ref.read(activeAccountProvider);
       int accountId;
       
       if (activeAccount != null) {
+        print('Using active account ID: ${activeAccount.id}, Name: ${activeAccount.name}');
         accountId = activeAccount.id;
       } else {
+        print('No active account. Fetching main account...');
         final mainAccount = await ref.read(accountRepositoryProvider).getMain();
+        print('Main account fetched: ID=${mainAccount.id}, Name: ${mainAccount.name}');
         accountId = mainAccount.id;
       }
 
@@ -177,20 +182,42 @@ class _AddTransactionScreenState extends ConsumerState<AddTransactionScreen>
         accountId: accountId,
       );
       
+      print('Transaction object created: ID=${tx.id}, AccId=${tx.accountId}');
+      print('Calling provider to save...');
+
       if (state.isEditing) {
         await ref.read(transactionsProvider.notifier).update(tx);
+        print('Update completed');
       } else {
-        await ref.read(transactionsProvider.notifier).add(tx);
+        final res = await ref.read(transactionsProvider.notifier).add(tx);
+        print('Add completed. Result: ${res.isSuccess ? "SUCCESS" : "FAILURE"}');
+        
+        if (res.isFailure) {
+          print('!!! Provider returned failure: ${res.errorOrNull}');
+          throw Exception(res.errorOrNull);
+        }
       }
 
+      print('Provider save completed successfully');
       HapticService.medium();
 
-      if (mounted) context.pop();
+      if (mounted) {
-    } catch (e) {
+        print('Popping screen...');
-      // Handle error silently or show a snackbar
+        context.pop();
+      }
+    } catch (e, stack) {
+      print('!!! SAVE CRASHED !!!');
+      print('Error: $e');
+      print('Stack trace:');
+      print(stack);
+      
       if (mounted) {
         ScaffoldMessenger.of(context).showSnackBar(
-          SnackBar(content: Text('Error saving transaction: $e')),
+          SnackBar(
+            content: Text('Save error: $e'),
+            backgroundColor: Colors.red,
+            duration: const Duration(seconds: 5),
+          ),
         );
       }
     } finally {