<?php

namespace App\Console\Commands;

use App\Models\GestioneContabile;
use App\Models\User;
use App\Modules\Contabilita\Models\Registrazione;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;

class GesconSyncOperazioniPrimaNota extends Command
{
    protected $signature = 'gescon:sync-operazioni-prima-nota
                            {--stabile-id= : ID stabile NetGescon}
                            {--year= : Anno (YYYY)}
                            {--tipo=all : all|ordinaria|straordinaria|riscaldamento}
                            {--dry : Simula senza scrivere}';

    protected $description = 'Sincronizza operazioni legacy in contabilita_registrazioni (Prima Nota), con upsert idempotente per external_reference.';

    public function handle(): int
    {
        $stabileId = (int) ($this->option('stabile-id') ?? 0);
        if ($stabileId <= 0) {
            $this->error('Serve --stabile-id valido.');
            return 1;
        }

        $yearOpt = $this->option('year');
        $year = is_numeric($yearOpt) ? (int) $yearOpt : null;

        $tipo = strtolower((string) ($this->option('tipo') ?? 'all'));
        if (! in_array($tipo, ['all', 'ordinaria', 'straordinaria', 'riscaldamento'], true)) {
            $this->error('Valore --tipo non valido. Usa all|ordinaria|straordinaria|riscaldamento');
            return 1;
        }

        $dry = (bool) $this->option('dry');

        $systemUserId = (int) (User::query()->orderBy('id')->value('id') ?? 0);

        $query = DB::connection('gescon_import')->table('operazioni');

        if ($year) {
            $query->whereYear('dt_spe', $year);
        }

        if ($tipo !== 'all') {
            $gestioneCode = match ($tipo) {
                'ordinaria' => 'O',
                'straordinaria' => 'S',
                'riscaldamento' => 'R',
                default => null,
            };
            if ($gestioneCode) {
                $query->where('gestione', $gestioneCode);
            }
        }

        $rows = $query
            ->orderBy('dt_spe')
            ->orderBy('id_operaz')
            ->get([
                'id_operaz',
                'dt_spe',
                'benef',
                'num_fat',
                'gestione',
                'n_stra',
            ]);

        $created = 0;
        $updated = 0;
        $unchanged = 0;

        foreach ($rows as $row) {
            $legacyId = (int) ($row->id_operaz ?? 0);
            if ($legacyId <= 0) {
                continue;
            }

            $dataReg = ! empty($row->dt_spe) ? (string) $row->dt_spe : now()->toDateString();
            $anno = (int) substr($dataReg, 0, 4);

            $tipoGestione = match (strtoupper((string) ($row->gestione ?? 'O'))) {
                'S' => 'straordinaria',
                'R' => 'riscaldamento',
                default => 'ordinaria',
            };

            $gestioneQuery = GestioneContabile::query()
                ->where('stabile_id', $stabileId)
                ->where('anno_gestione', $anno)
                ->where('tipo_gestione', $tipoGestione);

            if ($tipoGestione === 'straordinaria') {
                $nStra = is_numeric($row->n_stra ?? null) ? (int) $row->n_stra : null;
                if ($nStra && $nStra > 0) {
                    $gestioneQuery->where('numero_straordinaria', $nStra);
                }
            }

            $gestione = $gestioneQuery
                ->orderByDesc('id')
                ->first();

            $resolvedGestioneId = $gestione
                ? Registrazione::resolveGestioneIdOrDefault((int) $gestione->id, $stabileId, $dataReg)
                : Registrazione::resolveGestioneIdOrDefault(0, $stabileId, $dataReg);

            $payload = [
                'stabile_id' => $stabileId,
                'gestione_id' => $resolvedGestioneId,
                'data_registrazione' => $dataReg,
                'entry_date' => $dataReg,
                'description' => trim((string) ($row->benef ?? 'Operazione legacy #' . $legacyId)),
                'document_type' => 'LEGACY_GESCON',
                'document_number' => trim((string) ($row->num_fat ?? '')) !== ''
                    ? trim((string) $row->num_fat)
                    : ('LEG-' . $legacyId),
                'external_reference' => 'OPERAZIONE_LEGACY:' . $legacyId,
                'status' => 'confirmed',
            ];

            if (Schema::hasColumn('contabilita_registrazioni', 'user_id')) {
                $payload['user_id'] = $systemUserId > 0 ? $systemUserId : null;
            }
            if (Schema::hasColumn('contabilita_registrazioni', 'created_by')) {
                $payload['created_by'] = $systemUserId > 0 ? $systemUserId : null;
            }
            if (Schema::hasColumn('contabilita_registrazioni', 'updated_by')) {
                $payload['updated_by'] = $systemUserId > 0 ? $systemUserId : null;
            }

            $existing = Registrazione::query()
                ->where('stabile_id', $stabileId)
                ->where('external_reference', $payload['external_reference'])
                ->first();

            if (! $existing) {
                if (! $dry) {
                    Registrazione::query()->create($payload);
                }
                $created++;
                continue;
            }

            $dirty = false;
            foreach ($payload as $field => $value) {
                if ((string) ($existing->{$field} ?? '') !== (string) ($value ?? '')) {
                    $existing->{$field} = $value;
                    $dirty = true;
                }
            }

            if (! $dry && $dirty) {
                if (empty($existing->protocol) || empty($existing->protocollo_completo)) {
                    $existing->applyAutoProtocols();
                }
                $existing->save();
            }

            if ($dirty) {
                $updated++;
            } else {
                $unchanged++;
            }
        }

        $this->info('Sync completato: creati=' . $created . ' aggiornati=' . $updated . ' invariati=' . $unchanged . ($dry ? ' (DRY-RUN)' : ''));

        return 0;
    }
}