# -*- coding: utf-8 -*-
"""Unit tests for reject-history routes."""

import json
import os
import unittest
from unittest.mock import patch

from mes_dashboard.app import create_app
import mes_dashboard.core.database as db


def _login_as_admin(client):
    with client.session_transaction() as sess:
        sess['admin'] = {'displayName': 'Admin', 'employeeNo': 'A001'}


class TestRejectHistoryRoutesBase(unittest.TestCase):
    def setUp(self):
        db._ENGINE = None
        self.app = create_app('testing')
        self.app.config['TESTING'] = True
        self.client = self.app.test_client()


class TestRejectHistoryPageRoute(unittest.TestCase):
    @patch.dict(os.environ, {'PORTAL_SPA_ENABLED': 'false'})
    @patch('mes_dashboard.app.os.path.exists', return_value=False)
    def test_reject_history_page_fallback_contains_vite_entry(self, _mock_exists):
        db._ENGINE = None
        app = create_app('testing')
        app.config['TESTING'] = True
        client = app.test_client()
        _login_as_admin(client)

        response = client.get('/reject-history', follow_redirects=False)
        self.assertEqual(response.status_code, 200)
        html = response.data.decode('utf-8')
        self.assertIn('/static/dist/reject-history.js', html)


class TestRejectHistoryApiRoutes(TestRejectHistoryRoutesBase):
    def test_summary_missing_dates_returns_400(self):
        response = self.client.get('/api/reject-history/summary')
        payload = json.loads(response.data)

        self.assertEqual(response.status_code, 400)
        self.assertFalse(payload['success'])

    def test_summary_invalid_include_excluded_scrap_returns_400(self):
        response = self.client.get(
            '/api/reject-history/summary?start_date=2026-02-01&end_date=2026-02-07'
            '&include_excluded_scrap=invalid'
        )
        payload = json.loads(response.data)

        self.assertEqual(response.status_code, 400)
        self.assertFalse(payload['success'])

    def test_summary_invalid_exclude_material_scrap_returns_400(self):
        response = self.client.get(
            '/api/reject-history/summary?start_date=2026-02-01&end_date=2026-02-07'
            '&exclude_material_scrap=invalid'
        )
        payload = json.loads(response.data)

        self.assertEqual(response.status_code, 400)
        self.assertFalse(payload['success'])

    @patch('mes_dashboard.routes.reject_history_routes.query_summary')
    def test_summary_passes_filters_and_meta(self, mock_summary):
        mock_summary.return_value = {
            'MOVEIN_QTY': 100,
            'REJECT_TOTAL_QTY': 10,
            'DEFECT_QTY': 5,
            'REJECT_RATE_PCT': 10,
            'DEFECT_RATE_PCT': 5,
            'REJECT_SHARE_PCT': 66.7,
            'AFFECTED_LOT_COUNT': 8,
            'AFFECTED_WORKORDER_COUNT': 4,
            'meta': {
                'include_excluded_scrap': False,
                'exclusion_applied': True,
                'excluded_reason_count': 2,
            },
        }

        response = self.client.get(
            '/api/reject-history/summary?start_date=2026-02-01&end_date=2026-02-07'
            '&workcenter_groups=WB&packages=PKG-A&reasons=R1&reasons=R2'
        )
        payload = json.loads(response.data)

        self.assertEqual(response.status_code, 200)
        self.assertTrue(payload['success'])
        self.assertEqual(payload['meta']['include_excluded_scrap'], False)
        _, kwargs = mock_summary.call_args
        self.assertEqual(kwargs['workcenter_groups'], ['WB'])
        self.assertEqual(kwargs['packages'], ['PKG-A'])
        self.assertEqual(kwargs['reasons'], ['R1', 'R2'])
        self.assertIs(kwargs['include_excluded_scrap'], False)
        self.assertIs(kwargs['exclude_material_scrap'], True)

    @patch('mes_dashboard.routes.reject_history_routes.query_trend')
    def test_trend_invalid_granularity_returns_400(self, mock_trend):
        mock_trend.side_effect = ValueError('Invalid granularity. Use day, week, or month')

        response = self.client.get(
            '/api/reject-history/trend?start_date=2026-02-01&end_date=2026-02-07&granularity=hour'
        )
        payload = json.loads(response.data)

        self.assertEqual(response.status_code, 400)
        self.assertFalse(payload['success'])

    @patch('mes_dashboard.routes.reject_history_routes.query_reason_pareto')
    def test_reason_pareto_defaults_top80(self, mock_pareto):
        mock_pareto.return_value = {'items': [], 'metric_mode': 'reject_total', 'pareto_scope': 'top80', 'meta': {}}

        response = self.client.get('/api/reject-history/reason-pareto?start_date=2026-02-01&end_date=2026-02-07')

        self.assertEqual(response.status_code, 200)
        _, kwargs = mock_pareto.call_args
        self.assertEqual(kwargs['pareto_scope'], 'top80')
        self.assertEqual(kwargs['metric_mode'], 'reject_total')

    @patch('mes_dashboard.routes.reject_history_routes.query_list')
    @patch('mes_dashboard.core.rate_limit.check_and_record', return_value=(True, 6))
    def test_list_rate_limited_returns_429(self, _mock_limit, mock_list):
        response = self.client.get('/api/reject-history/list?start_date=2026-02-01&end_date=2026-02-07')
        payload = json.loads(response.data)

        self.assertEqual(response.status_code, 429)
        self.assertEqual(payload['error']['code'], 'TOO_MANY_REQUESTS')
        self.assertEqual(response.headers.get('Retry-After'), '6')
        mock_list.assert_not_called()

    @patch('mes_dashboard.routes.reject_history_routes.export_csv')
    def test_export_returns_csv_response(self, mock_export):
        mock_export.return_value = iter(['A,B\n', '1,2\n'])

        response = self.client.get('/api/reject-history/export?start_date=2026-02-01&end_date=2026-02-07')

        self.assertEqual(response.status_code, 200)
        self.assertIn('attachment; filename=reject_history_2026-02-01_to_2026-02-07.csv', response.headers.get('Content-Disposition', ''))
        self.assertIn('text/csv', response.headers.get('Content-Type', ''))


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