"""Bank-rec specific migration step.

Hooks into fusion.migration.wizard (defined by fusion_accounting_migration)
to bootstrap fusion.reconcile.precedent from existing
account.partial.reconcile rows. This gives the AI immediate "memory" from
past Enterprise reconciles so suggestions can be ranked by precedent
similarity from day one.

The bootstrap step is exposed as a public method (_bank_rec_bootstrap_step)
so tests and the audit report can invoke it directly. action_run_migration
is overridden to call super() then run the bootstrap.
"""

import logging

from odoo import _, models

from ..services.precedent_backfill import backfill_precedents

_logger = logging.getLogger(__name__)


class FusionMigrationWizard(models.TransientModel):
    _inherit = "fusion.migration.wizard"

    def _bank_rec_bootstrap_step(self):
        """Migration step: backfill precedents + refresh patterns + refresh MV.

        Returns a dict describing what happened, suitable for surfacing to
        the user via notification or PDF audit report.
        """
        self.ensure_one()
        _logger.info(
            "fusion_accounting_bank_rec migration step: bootstrap starting")

        company_id = None
        if 'company_id' in self._fields and self.company_id:
            company_id = self.company_id.id

        precedent_result = backfill_precedents(
            self.env, company_id=company_id, limit=10000)

        try:
            self.env['fusion.bank.rec.cron']._cron_refresh_patterns()
            patterns_ok = True
        except Exception as e:  # noqa: BLE001
            _logger.warning(
                "Pattern refresh during migration failed: %s", e)
            patterns_ok = False

        try:
            self.env['fusion.unreconciled.bank.line.mv']._refresh(
                concurrently=False)
            mv_ok = True
        except Exception as e:  # noqa: BLE001
            _logger.warning("MV refresh during migration failed: %s", e)
            mv_ok = False

        result = {
            'step': 'bank_rec_bootstrap',
            'precedents_created': precedent_result['created'],
            'precedents_skipped': precedent_result['skipped'],
            'patterns_refreshed': patterns_ok,
            'mv_refreshed': mv_ok,
        }
        _logger.info(
            "fusion_accounting_bank_rec bootstrap complete: %s", result)
        return result

    def action_run_migration(self):
        """Override the migration entry-point to add the bank-rec step.

        Calls super() (which currently returns a notification stub from
        Phase 0) and then runs the bank-rec bootstrap. Returns a
        notification summarizing both.
        """
        # Don't bind super()'s return value to `_` \u2014 that shadows the
        # imported translation function and breaks the _("...") calls below.
        super().action_run_migration()
        result = self._bank_rec_bootstrap_step()
        return {
            'type': 'ir.actions.client',
            'tag': 'display_notification',
            'params': {
                'type': 'success',
                'title': _("Bank-Rec Migration Complete"),
                'message': _(
                    "Backfilled %(created)d precedents "
                    "(skipped %(skipped)d). "
                    "Patterns refreshed: %(p)s. MV refreshed: %(m)s."
                ) % {
                    'created': result['precedents_created'],
                    'skipped': result['precedents_skipped'],
                    'p': 'yes' if result['patterns_refreshed'] else 'no',
                    'm': 'yes' if result['mv_refreshed'] else 'no',
                },
                'sticky': False,
            },
        }