import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:myapp/models/bank.dart';
import 'package:myapp/models/transaction_meta.dart';
import 'package:myapp/services/pb_sync_service.dart';
import 'package:myapp/services/storage_service.dart';

void main() {
  test('mergeTxMetaStores unions labels and metas without dropping either side',
      () {
    final local = TxMetaStoreData(
      byId: {
        'tx1': const TxMeta(labelIds: ['groceries'], notes: 'local note'),
        'tx2': const TxMeta(recurring: true),
      },
      labelsByMerchant: {
        'albert heijn': ['groceries'],
      },
      customLabels: const [
        TxLabel(
          id: 'custom_ah',
          name: 'AH',
          color: Color(0xFF0F766E),
          custom: true,
        ),
      ],
      labelParents: const {'custom_ah': 'groceries'},
    );
    final remote = TxMetaStoreData(
      byId: {
        'tx1': const TxMeta(labelIds: ['dining'], notes: ''),
        'tx3': const TxMeta(notes: 'remote only'),
      },
      labelsByMerchant: {
        'albert heijn': ['shopping'],
        'jumbo': ['groceries'],
      },
      notesByMerchant: const {'jumbo': 'weekly'},
      customLabels: const [
        TxLabel(
          id: 'custom_fuel',
          name: 'Fuel',
          color: Color(0xFFEA580C),
          custom: true,
        ),
      ],
    );

    final merged = mergeTxMetaStores(local, remote);

    expect(merged.byId['tx1']!.labelIds, containsAll(['groceries', 'dining']));
    expect(merged.byId['tx1']!.notes, 'local note');
    expect(merged.byId['tx2']!.recurring, isTrue);
    expect(merged.byId['tx3']!.notes, 'remote only');
    expect(merged.labelsByMerchant['albert heijn'],
        containsAll(['groceries', 'shopping']));
    expect(merged.labelsByMerchant['jumbo'], ['groceries']);
    expect(merged.notesByMerchant['jumbo'], 'weekly');
    expect(merged.customLabels.map((l) => l.id),
        containsAll(['custom_ah', 'custom_fuel']));
    expect(merged.labelParents['custom_ah'], 'groceries');
  });

  test('mergeBankTransactionLists unions without dropping either side', () {
    const localOnly = BankTransaction(
      date: '2024-01-02',
      description: 'Local Cafe',
      amount: -4.5,
      currency: 'EUR',
      pending: false,
    );
    const shared = BankTransaction(
      date: '2024-01-01',
      description: 'Shared Shop',
      amount: -12.0,
      currency: 'EUR',
      pending: false,
    );
    const remoteOnly = BankTransaction(
      date: '2024-01-03',
      description: 'Remote Market',
      amount: -9.25,
      currency: 'EUR',
      pending: true,
    );

    final merged = mergeBankTransactionLists(
      [localOnly, shared],
      [shared, remoteOnly],
    );

    expect(merged.length, 3);
    expect(merged.map((t) => t.id), containsAll([
      localOnly.id,
      shared.id,
      remoteOnly.id,
    ]));
    expect(merged.first.date, '2024-01-03');
  });
}