<?php

namespace App\Console\Commands;

use App\Models\Incentive;
use App\Models\IncentiveParticipant;
use App\Services\Incentive\IncentivePointsLogRepairService;
use App\Services\Incentive\IncentiveTracker;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Log;

/**
 * Batch-Neuberechnung fuer Incentives.
 *
 * Abo-Wertung (nicht hier codiert, sondern in {@see IncentiveParticipant::rebuildFromSourceTables}
 * und {@see IncentivePointsLogRepairService::syncMissingTrackingAbos}):
 *
 * - Eigenabo (me): zaehlt auch wenn es vor dem Qualifikationszeitraum abgeschlossen wurde;
 *   Einmalpunkte wirken dann ab Qualifikationsbeginn (aktiviert_at/Log-Monat auf Start des Zeitraums).
 * - Kundenabo (ot): nur wenn im Qualifikationszeitraum neu abgeschlossen (created_at im Zeitraum).
 *
 * Zu Beginn werden fuer alle Berater (User mit m_level) fehlende Teilnehmerzeilen ohne
 * accepted_terms angelegt ({@see IncentiveParticipant::ensureConsultantsForIncentive}), damit
 * Punkte ohne Checkbox mitlaufen; die Rangliste blendet Namen erst nach Zustimmung ein.
 */
class IncentiveCalculate extends Command
{
    protected $signature = 'incentive:calculate
        {incentive_id? : ID des Incentives (leer = alle aktiven)}
        {--force : Tracking-Tabellen + Log loeschen und komplett neu aufbauen}
        {--skip-repair : Kein Nachziehen von Trackings/FKs/SV-Logs (nur Summen aus bestehendem Log)}
        {--verbose-details : Zeigt Details pro Teilnehmer}';

    protected $description = 'Incentive-Punkte: fehlende Partner-/Abo-Trackings, FK-Reparatur, fehlende SV-Logs, Summen/Ranking; --force = kompletter Neuaufbau aus Quelldaten';

    public function handle(IncentivePointsLogRepairService $repairService): int
    {
        if ($id = $this->argument('incentive_id')) {
            $incentive = Incentive::find($id);
            if (! $incentive) {
                $this->error("Incentive #{$id} nicht gefunden.");

                return self::FAILURE;
            }

            return $this->processIncentive($incentive, $repairService);
        }

        $incentives = Incentive::active()->get();
        if ($incentives->isEmpty()) {
            $this->info('Keine aktiven Incentives gefunden.');

            return self::SUCCESS;
        }

        $exitCode = self::SUCCESS;
        foreach ($incentives as $incentive) {
            if ($this->processIncentive($incentive, $repairService) !== self::SUCCESS) {
                $exitCode = self::FAILURE;
            }
        }

        return $exitCode;
    }

    private function processIncentive(Incentive $incentive, IncentivePointsLogRepairService $repairService): int
    {
        $force = $this->option('force');
        $skipRepair = $this->option('skip-repair');
        $verbose = $this->option('verbose-details');

        $this->info("=== {$incentive->name} (ID: {$incentive->id}) ===");
        $this->info("  Zeitraum: {$incentive->qualification_start->format('d.m.Y')} - {$incentive->qualification_end->format('d.m.Y')}");
        if ($force) {
            $this->info('  Modus: FORCE (Tracking + Log aus Quelldaten neu aufbauen)');
        } elseif ($skipRepair) {
            $this->info('  Modus: Nur Neuberechnung (Summen/Ranking aus bestehendem Log)');
        } else {
            $this->info('  Modus: Tracking nachziehen + FK-Reparatur + SV-Logs + Neuberechnung');
        }

        $stubAdded = IncentiveParticipant::ensureConsultantsForIncentive($incentive);
        if ($stubAdded > 0) {
            $this->info("  Berater-Teilnehmer neu angelegt (ohne Zustimmung): {$stubAdded}");
        }

        $participants = $incentive->participants()->with('user', 'user.account')->get();
        $this->info("  Teilnehmer: {$participants->count()}");
        $this->newLine();

        $stats = [
            'processed' => 0,
            'errors' => 0,
            'with_points' => 0,
            'with_partners' => 0,
            'with_abos' => 0,
            'tracking_partner_added' => 0,
            'tracking_abo_added' => 0,
            'repair_partner_fk' => 0,
            'repair_abo_fk' => 0,
            'repair_onetime_partner_fk' => 0,
            'repair_onetime_abo_fk' => 0,
            'sv_logs_added' => 0,
        ];
        $errors = [];

        $bar = $this->output->createProgressBar($participants->count());
        $bar->start();

        foreach ($participants as $participant) {
            try {
                if (! $participant->user) {
                    $bar->advance();

                    continue;
                }

                if ($force) {
                    $participant->rebuildFromSourceTables()->save();
                } else {
                    if (! $skipRepair) {
                        $stats['tracking_partner_added'] += $repairService->syncMissingTrackingPartners($participant);
                        $stats['tracking_abo_added'] += $repairService->syncMissingTrackingAbos($participant);
                        $r = $repairService->repairForeignKeys($participant);
                        $stats['repair_partner_fk'] += $r['partner_fk'];
                        $stats['repair_abo_fk'] += $r['abo_fk'];
                        $stats['repair_onetime_partner_fk'] += $r['onetime_partner_fk'];
                        $stats['repair_onetime_abo_fk'] += $r['onetime_abo_fk'];
                        $stats['sv_logs_added'] += $repairService->syncMissingSalesVolumeLogs($participant);
                    }
                    $participant->recalculateFromTrackingTables()->save();
                }

                $stats['processed']++;

                if ($participant->total_points > 0) {
                    $stats['with_points']++;
                }
                if ($participant->qualified_partners > 0) {
                    $stats['with_partners']++;
                }
                if ($participant->qualified_abos > 0) {
                    $stats['with_abos']++;
                }

                if ($verbose && $participant->total_points > 0) {
                    $name = $participant->user->account
                        ? $participant->user->account->first_name.' '.$participant->user->account->last_name
                        : ($participant->user->email ?? 'User #'.$participant->user_id);
                    $bar->clear();
                    $this->line("    {$name}: {$participant->total_points} Pkt, {$participant->qualified_partners} Partner, {$participant->qualified_abos} Abos");
                    $bar->display();
                }
            } catch (\Throwable $e) {
                $stats['errors']++;
                $errors[] = "Participant #{$participant->id} (User #{$participant->user_id}): {$e->getMessage()}";
                Log::error('IncentiveCalculation error for participant '.$participant->id.': '.$e->getMessage());
            }

            $bar->advance();
        }

        $bar->finish();
        $this->newLine(2);

        IncentiveTracker::updateRanking($incentive);
        $ranked = IncentiveParticipant::where('incentive_id', $incentive->id)
            ->whereNotNull('rank')
            ->count();

        $tableRows = [
            ['Verarbeitet', (string) $stats['processed']],
            ['Fehler', (string) $stats['errors']],
            ['Mit Punkten', (string) $stats['with_points']],
            ['Mit Partnern', (string) $stats['with_partners']],
            ['Mit Abos', (string) $stats['with_abos']],
            ['Im Ranking', (string) $ranked],
        ];

        if (! $force) {
            $tableRows[] = ['Neupartner-Trackings nachgezogen', (string) $stats['tracking_partner_added']];
            $tableRows[] = ['Neuabo-Trackings nachgezogen', (string) $stats['tracking_abo_added']];
            $tableRows[] = ['FK Partner (akkum.) repariert', (string) $stats['repair_partner_fk']];
            $tableRows[] = ['FK Abo (akkum.) repariert', (string) $stats['repair_abo_fk']];
            $tableRows[] = ['FK Partner (Einmal) repariert', (string) $stats['repair_onetime_partner_fk']];
            $tableRows[] = ['FK Abo (Einmal) repariert', (string) $stats['repair_onetime_abo_fk']];
            $tableRows[] = ['Neue SV-Log-Eintraege', (string) $stats['sv_logs_added']];
        }

        $this->table(['Metrik', 'Wert'], $tableRows);

        if (! empty($errors)) {
            $this->error('Fehler:');
            foreach ($errors as $err) {
                $this->line("  - {$err}");
            }

            return self::FAILURE;
        }

        $this->info('Fertig.');

        return self::SUCCESS;
    }
}