<?php

declare(strict_types=1);

namespace App\Command;

use App\Entity\Bovine;
use App\Entity\Building;
use App\Entity\Supplier;
use Doctrine\ORM\EntityManagerInterface;
use PhpOffice\PhpSpreadsheet\IOFactory;
use Symfony\Component\Console\Attribute\AsCommand;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
use Throwable;

#[AsCommand(
    name: 'app:feed-bovine-prices',
    description: 'Met à jour le poids, le prix au kilo et le fournisseur des bovins existants depuis un fichier XLSX.'
)]
final class FeedBovinePricesCommand extends Command
{
    public function __construct(
        private EntityManagerInterface $em,
    ) {
        parent::__construct();
    }

    protected function configure(): void
    {
        $this
            ->addArgument('file', InputArgument::REQUIRED, 'Chemin absolu vers le fichier XLSX')
            ->addOption('dry-run', null, InputOption::VALUE_NONE, 'Simule sans persister en BDD')
        ;
    }

    protected function execute(InputInterface $input, OutputInterface $output): int
    {
        $io     = new SymfonyStyle($input, $output);
        $file   = (string) $input->getArgument('file');
        $dryRun = (bool) $input->getOption('dry-run');

        if (!file_exists($file)) {
            $io->error(sprintf('Fichier introuvable : %s', $file));

            return Command::FAILURE;
        }

        $io->title('Feed bovins depuis '.basename($file));
        if ($dryRun) {
            $io->warning('Dry-run activé : aucune écriture en BDD.');
        }

        try {
            $spreadsheet = IOFactory::load($file);
        } catch (Throwable $e) {
            $io->error('Impossible de lire le fichier : '.$e->getMessage());

            return Command::FAILURE;
        }

        $sheet      = $spreadsheet->getActiveSheet();
        $highestRow = $sheet->getHighestRow();

        // Pré-chargement des fournisseurs pour des lookups rapides (insensible casse).
        $supplierByName = [];
        foreach ($this->em->getRepository(Supplier::class)->findAll() as $supplier) {
            $supplierByName[mb_strtoupper($supplier->getName())] = $supplier;
        }

        // Pré-chargement des bâtiments par code (insensible casse).
        $buildingByCode = [];
        foreach ($this->em->getRepository(Building::class)->findAll() as $building) {
            $buildingByCode[mb_strtoupper($building->getCode())] = $building;
        }

        $bovineRepo = $this->em->getRepository(Bovine::class);

        $stats = [
            'total'           => 0,
            'updated'         => 0,
            'notFound'        => 0,
            'invalid'         => 0,
            'supplierMissing' => 0,
            'buildingMissing' => 0,
        ];
        $missingNationalNumbers = [];
        $missingSuppliers       = [];
        $missingBuildings       = [];

        $io->progressStart($highestRow);
        for ($row = 1; $row <= $highestRow; ++$row) {
            ++$stats['total'];

            $rawNationalNumber = (string) ($sheet->getCell([1, $row])->getValue() ?? '');
            $rawSupplier       = (string) ($sheet->getCell([2, $row])->getValue() ?? '');
            $rawWeight         = $sheet->getCell([3, $row])->getValue();
            $rawPrice          = $sheet->getCell([4, $row])->getValue();
            $rawBuilding       = (string) ($sheet->getCell([5, $row])->getValue() ?? '');

            $rawNationalNumber = trim($rawNationalNumber);
            if ('' === $rawNationalNumber) {
                ++$stats['invalid'];
                $io->progressAdvance();

                continue;
            }

            // Garde : strip "FR" + espace optionnel uniquement s'il est présent.
            $nationalNumber = preg_replace('/^FR\s*/i', '', $rawNationalNumber);

            $bovine = $bovineRepo->findOneBy(['nationalNumber' => $nationalNumber]);
            if (null === $bovine) {
                ++$stats['notFound'];
                $missingNationalNumbers[] = $nationalNumber;
                $io->progressAdvance();

                continue;
            }

            // Lookup supplier (peut être null si introuvable ou colonne vide).
            $supplier     = null;
            $supplierName = mb_strtoupper(trim($rawSupplier));
            if ('' !== $supplierName) {
                $supplier = $supplierByName[$supplierName] ?? null;
                if (null === $supplier) {
                    ++$stats['supplierMissing'];
                    $missingSuppliers[$supplierName] = ($missingSuppliers[$supplierName] ?? 0) + 1;
                }
            }

            $weight = is_numeric($rawWeight) ? (int) $rawWeight : null;
            $price  = is_numeric($rawPrice) ? (float) $rawPrice : null;

            if (null !== $weight) {
                $bovine->setReceivedWeight($weight);
            }
            if (null !== $price) {
                $bovine->setPricePerKg($price);
            }
            $bovine->setSupplier($supplier);

            // Bâtiment direct : on n'écrase pas une affectation à une case existante.
            $buildingCode = mb_strtoupper(trim($rawBuilding));
            if ('' !== $buildingCode && null === $bovine->getBuildingCase()) {
                $building = $buildingByCode[$buildingCode] ?? null;
                if (null !== $building) {
                    $bovine->setBuilding($building);
                } else {
                    ++$stats['buildingMissing'];
                    $missingBuildings[$buildingCode] = ($missingBuildings[$buildingCode] ?? 0) + 1;
                }
            }

            ++$stats['updated'];
            $io->progressAdvance();
        }
        $io->progressFinish();

        if (!$dryRun) {
            $this->em->flush();
        }

        $io->section('Résultats');
        $io->table(
            ['Métrique', 'Valeur'],
            [
                ['Lignes totales', $stats['total']],
                ['Bovins mis à jour', $stats['updated']],
                ['Bovins introuvables', $stats['notFound']],
                ['Lignes invalides', $stats['invalid']],
                ['Fournisseurs introuvables (supplier=null)', $stats['supplierMissing']],
                ['Bâtiments introuvables (building non set)', $stats['buildingMissing']],
            ]
        );

        if ([] !== $missingNationalNumbers) {
            $preview = array_slice($missingNationalNumbers, 0, 10);
            $io->warning(sprintf(
                '%d bovin(s) introuvable(s). Aperçu : %s%s',
                count($missingNationalNumbers),
                implode(', ', $preview),
                count($missingNationalNumbers) > 10 ? '…' : '',
            ));
        }

        if ([] !== $missingSuppliers) {
            $list = [];
            foreach ($missingSuppliers as $name => $count) {
                $list[] = sprintf('%s (%d)', $name, $count);
            }
            $io->warning('Fournisseurs introuvables (bovins rattachés en null) : '.implode(', ', $list));
        }

        if ([] !== $missingBuildings) {
            $list = [];
            foreach ($missingBuildings as $code => $count) {
                $list[] = sprintf('%s (%d)', $code, $count);
            }
            $io->warning('Bâtiments introuvables (champ non renseigné) : '.implode(', ', $list));
        }

        if ($dryRun) {
            $io->success('Dry-run terminé. Relance sans --dry-run pour persister.');
        } else {
            $io->success('Feed terminé avec succès.');
        }

        return Command::SUCCESS;
    }
}