"""Tests for commentary_generator service."""

from odoo.tests.common import TransactionCase, tagged
from odoo.addons.fusion_accounting_reports.services.commentary_generator import (
    generate_commentary, _templated_fallback,
)


@tagged('post_install', '-at_install')
class TestCommentaryGenerator(TransactionCase):

    def setUp(self):
        super().setUp()
        # Ensure no provider is configured so we exercise the fallback path
        self.env['ir.config_parameter'].sudo().search([
            ('key', 'in', ['fusion_accounting.provider.reports_commentary',
                           'fusion_accounting.provider.default'])
        ]).unlink()

    def test_fallback_when_no_provider(self):
        report = {
            'report_name': 'P&L',
            'period': {'label': 'Apr 2026'},
            'rows': [
                {'id': 'r1', 'label': 'Revenue', 'amount': 100000, 'is_subtotal': False},
                {'id': 'r2', 'label': 'Net Income', 'amount': 25000, 'is_subtotal': True},
            ],
        }
        result = generate_commentary(self.env, report_result=report)
        self.assertIn('summary', result)
        self.assertIn('Net Income', result['summary'])
        self.assertIn('25,000', result['summary'])

    def test_fallback_includes_anomalies_in_concerns(self):
        report = {
            'report_name': 'P&L',
            'period': {'label': 'Apr 2026'},
            'rows': [],
        }
        anomalies = [
            {'label': 'Revenue', 'direction': 'increase', 'variance_pct': 30.0,
             'variance_amount': 5000, 'severity': 'medium'},
        ]
        result = generate_commentary(self.env, report_result=report, anomalies=anomalies)
        self.assertEqual(len(result['concerns']), 1)
        self.assertIn('Revenue', result['concerns'][0])
        self.assertIn('30.0%', result['concerns'][0])
        self.assertGreater(len(result['next_actions']), 0)

    def test_returns_dict_with_required_keys(self):
        report = {'report_name': 'Test', 'period': {'label': 'X'}, 'rows': []}
        result = generate_commentary(self.env, report_result=report)
        for key in ('summary', 'highlights', 'concerns', 'next_actions'):
            self.assertIn(key, result)