import unittest
from unittest.mock import patch
from app import app


def _bypass_cache(cache_key, sheet_id, fetch_func, *args, serialize=None, deserialize=None, **kwargs):
    """Test helper: call fetch_func directly, bypassing the cache layer."""
    return fetch_func(*args, **kwargs)


class TestWebApp(unittest.TestCase):
    def setUp(self):
        app.config['TESTING'] = True
        self.client = app.test_client()

    def test_index_page(self):
        """Test that / returns the refresh meta tag"""
        response = self.client.get('/')
        self.assertEqual(response.status_code, 200)
        self.assertIn(b'url=/fees', response.data)

    @patch('app.get_cached_data', side_effect=_bypass_cache)
    @patch('app.get_members_with_fees')
    @patch('app.fetch_exceptions', return_value={})
    def test_fees_route(self, mock_exceptions, mock_get_members, mock_cache):
        """Test that /fees returns 200 and renders the dashboard"""
        mock_get_members.return_value = (
            [('Test Member', 'A', {'2026-01': (750, 4)})],
            ['2026-01']
        )

        response = self.client.get('/fees')
        self.assertEqual(response.status_code, 200)
        self.assertIn(b'FUJ Fees Dashboard', response.data)
        self.assertIn(b'Test Member', response.data)

    @patch('app.get_cached_data', side_effect=_bypass_cache)
    @patch('app.get_junior_members_with_fees')
    @patch('app.fetch_exceptions', return_value={})
    def test_fees_juniors_route(self, mock_exceptions, mock_get_junior_members, mock_cache):
        """Test that /fees-juniors returns 200 and renders the junior dashboard"""
        mock_get_junior_members.return_value = (
            [
                ('Test Junior 1', 'J', {'2026-01': ('?', 1, 0, 1)}),
                ('Test Junior 2', 'J', {'2026-01': (500, 4, 1, 3)})
            ],
            ['2026-01']
        )

        response = self.client.get('/fees-juniors')
        self.assertEqual(response.status_code, 200)
        self.assertIn(b'FUJ Junior Fees Dashboard', response.data)
        self.assertIn(b'Test Junior 1', response.data)
        self.assertIn(b'? / 1 (J)', response.data)
        self.assertIn(b'500 CZK / 4 (1A+3J)', response.data)

    @patch('app.get_cached_data', side_effect=_bypass_cache)
    @patch('app.fetch_sheet_data')
    @patch('app.fetch_exceptions', return_value={})
    @patch('app.get_members_with_fees')
    def test_reconcile_route(self, mock_get_members, mock_exceptions, mock_fetch_sheet, mock_cache):
        """Test that /reconcile returns 200 and shows matches"""
        mock_get_members.return_value = (
            [('Test Member', 'A', {'2026-01': (750, 4)})],
            ['2026-01']
        )
        mock_fetch_sheet.return_value = [{
            'date': '2026-01-01',
            'amount': 750,
            'person': 'Test Member',
            'purpose': '2026-01',
            'message': 'test payment',
            'sender': 'External Bank User',
            'inferred_amount': 750
        }]

        response = self.client.get('/reconcile')
        self.assertEqual(response.status_code, 200)
        self.assertIn(b'Payment Reconciliation', response.data)
        self.assertIn(b'Test Member', response.data)
        self.assertIn(b'OK', response.data)

    @patch('app.get_cached_data', side_effect=_bypass_cache)
    @patch('app.fetch_sheet_data')
    def test_payments_route(self, mock_fetch_sheet, mock_cache):
        """Test that /payments returns 200 and groups transactions"""
        mock_fetch_sheet.return_value = [{
            'date': '2026-01-01',
            'amount': 750,
            'person': 'Test Member',
            'purpose': '2026-01',
            'message': 'Direct Member Payment',
            'sender': 'External Bank User'
        }]
        response = self.client.get('/payments')
        self.assertEqual(response.status_code, 200)
        self.assertIn(b'Payments Ledger', response.data)
        self.assertIn(b'Test Member', response.data)
        self.assertIn(b'Direct Member Payment', response.data)

    @patch('app.get_cached_data', side_effect=_bypass_cache)
    @patch('app.fetch_sheet_data')
    @patch('app.fetch_exceptions')
    @patch('app.get_junior_members_with_fees')
    def test_reconcile_juniors_route(self, mock_get_junior, mock_exceptions, mock_transactions, mock_cache):
        """Test that /reconcile-juniors correctly computes balances for juniors."""
        mock_get_junior.return_value = (
            [
                ('Junior One', 'J', {'2026-01': (500, 4, 2, 2)}),
                ('Junior Two', 'X', {'2026-01': ('?', 1, 0, 1)})
            ],
            ['2026-01']
        )
        mock_exceptions.return_value = {}
        mock_transactions.return_value = [{
            'date': '2026-01-15',
            'amount': 500,
            'person': 'Junior One',
            'purpose': '2026-01',
            'message': '',
            'sender': 'Parent',
            'inferred_amount': 500
        }]

        response = self.client.get('/reconcile-juniors')
        self.assertEqual(response.status_code, 200)
        self.assertIn(b'Junior Payment Reconciliation', response.data)
        self.assertIn(b'Junior One', response.data)
        self.assertIn(b'Junior Two', response.data)
        self.assertIn(b'OK', response.data)
        self.assertIn(b'?', response.data)

if __name__ == '__main__':
    unittest.main()