"""End-to-end integration: scan -> escalate -> send -> reset."""

from datetime import date, timedelta
from odoo.tests.common import TransactionCase
from odoo.tests import tagged


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

    def setUp(self):
        super().setUp()
        self.engine = self.env['fusion.followup.engine']
        self.partner = self.env['res.partner'].create({
            'name': 'Full Flow Partner', 'email': 'flow@test.local',
        })
        for seq, name, days, tone in [(701, 'FlowReminder', 7, 'gentle'),
                                      (702, 'FlowWarning', 30, 'firm'),
                                      (703, 'FlowLegal', 60, 'legal')]:
            self.env['fusion.followup.level'].create({
                'name': name, 'sequence': seq,
                'delay_days': days, 'tone': tone,
            })

        line = self.env['account.move.line'].search([
            ('parent_state', '=', 'posted'),
            ('account_id.account_type', '=', 'asset_receivable'),
            ('reconciled', '=', False),
            ('amount_residual', '>', 0),
        ], limit=1)
        if not line:
            self.skipTest("No posted unreconciled receivable lines in test DB")
        line.write({
            'partner_id': self.partner.id,
            'date_maturity': date.today() - timedelta(days=20),
        })

    def test_full_flow_scan_send_reset(self):
        level = self.engine.compute_followup_level(self.partner)
        self.assertTrue(level)
        self.assertGreater(level.delay_days, 0)

        Run = self.env['fusion.followup.run']
        before = Run.search_count([('partner_id', '=', self.partner.id)])
        result = self.engine.send_followup_email(self.partner, force=True)
        after = Run.search_count([('partner_id', '=', self.partner.id)])
        self.assertGreater(after, before)
        self.assertIn(result['status'], ('sent', 'manual_review'))

        self.engine.pause_followup(self.partner,
                                   until_date=date.today() + timedelta(days=14))
        result_paused = self.engine.send_followup_email(self.partner)
        self.assertTrue(result_paused['status'].startswith('paused'))

        self.engine.reset_followup(self.partner)
        self.partner.invalidate_recordset(['fusion_followup_status'])
        self.assertEqual(self.partner.fusion_followup_status, 'no_action')

    def test_escalate_advances_to_next_level(self):
        Level = self.env['fusion.followup.level']
        level1 = Level.search([('sequence', '=', 701)], limit=1)
        self.engine.send_followup_email(self.partner, level=level1, force=True)
        self.partner.invalidate_recordset(['fusion_followup_last_level_id'])
        result = self.engine.escalate_to_next_level(self.partner)
        self.assertIn('partner_id', result)
        self.partner.invalidate_recordset(['fusion_followup_last_level_id'])
        if self.partner.fusion_followup_last_level_id:
            self.assertGreaterEqual(self.partner.fusion_followup_last_level_id.sequence, 702)

    def test_text_cache_reused_on_repeat(self):
        Cache = self.env['fusion.followup.text.cache']
        self.engine.send_followup_email(self.partner, force=True)
        after_first = Cache.search_count([('partner_id', '=', self.partner.id)])
        self.engine.send_followup_email(self.partner, force=True)
        after_second = Cache.search_count([('partner_id', '=', self.partner.id)])
        self.assertEqual(after_first, after_second)

    def test_history_records_each_send(self):
        Run = self.env['fusion.followup.run']
        before = Run.search_count([('partner_id', '=', self.partner.id)])
        self.engine.send_followup_email(self.partner, force=True)
        self.engine.send_followup_email(self.partner, force=True)
        after = Run.search_count([('partner_id', '=', self.partner.id)])
        self.assertEqual(after - before, 2)