<?php

namespace App\Console\Commands;

use App\Business\SupplierSummaryInboundImporter;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\File;
use Throwable;

/**
 * 供应商汇总表月度增量导入：读取已解密工作簿的「明细」子表，仅追加目标月份数据。
 */
class ImportSupplierSummaryInbound extends Command
{
    protected $signature = 'inventory:supplier-summary:import
        {file : 已解密的供应商汇总 XLSX 文件}
        {--month= : 目标月份 YYYY-MM，默认上一个月}
        {--result-json= : 将执行结果写入指定 JSON 文件}';

    protected $description = '将供应商汇总表「明细」增量导入入库明细数据';

    public function handle(SupplierSummaryInboundImporter $importer): int
    {
        $month = trim((string) $this->option('month'));
        if ($month === '') {
            $month = now('Asia/Shanghai')->subMonthNoOverflow()->format('Y-m');
        }

        $lock = Cache::lock('inventory-supplier-summary-inbound-import', 21600);
        if (! $lock->get()) {
            return $this->finish([
                'status' => 'failed',
                'report_month' => $month,
                'source_filename' => basename((string) $this->argument('file')),
                'success' => 0,
                'duplicates' => 0,
                'failed' => 1,
                'mapped' => 0,
                'total_in_table' => 0,
                'failure_reason_count' => 1,
                'failure_reasons' => [[
                    'row' => 0,
                    'reason' => '已有供应商汇总导入任务正在执行',
                ]],
            ]);
        }

        try {
            $result = $importer->import((string) $this->argument('file'), $month);
        } catch (Throwable $exception) {
            report($exception);
            $result = [
                'status' => 'failed',
                'report_month' => $month,
                'source_filename' => basename((string) $this->argument('file')),
                'success' => 0,
                'duplicates' => 0,
                'failed' => 1,
                'mapped' => 0,
                'total_in_table' => 0,
                'failure_reason_count' => 1,
                'failure_reasons' => [[
                    'row' => 0,
                    'reason' => $exception->getMessage(),
                ]],
            ];
        } finally {
            $lock->release();
        }

        return $this->finish($result);
    }

    /** @param array<string,mixed> $result */
    private function finish(array $result): int
    {
        $reasons = is_array($result['failure_reasons'] ?? null)
            ? $result['failure_reasons']
            : [];
        $result['failure_reason_count'] = count($reasons);

        $json = json_encode($result, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
        if (! is_string($json)) {
            $json = '{"status":"failed","failure_reasons":[{"row":0,"reason":"结果 JSON 编码失败"}]}';
        }

        $resultPath = trim((string) $this->option('result-json'));
        if ($resultPath !== '') {
            File::ensureDirectoryExists(dirname($resultPath));
            File::put($resultPath, $json . PHP_EOL);
        }

        $this->line(sprintf(
            '%s 导入状态=%s，成功=%s，重复=%s，失败=%s，目标月份总行数=%s',
            (string) ($result['report_month'] ?? ''),
            (string) ($result['status'] ?? 'failed'),
            number_format((int) ($result['success'] ?? 0)),
            number_format((int) ($result['duplicates'] ?? 0)),
            number_format((int) ($result['failed'] ?? 0)),
            number_format((int) ($result['total_in_table'] ?? 0)),
        ));
        foreach (array_slice($reasons, 0, 10) as $reason) {
            $this->warn(sprintf(
                '第 %s 行：%s',
                (string) ($reason['row'] ?? ''),
                (string) ($reason['reason'] ?? '未知错误'),
            ));
        }
        if (count($reasons) > 10) {
            $this->line(sprintf(
                '另有 %s 条失败原因，完整清单见结果 JSON。',
                number_format(count($reasons) - 10),
            ));
        }

        return ($result['status'] ?? 'failed') === 'success'
            ? self::SUCCESS
            : self::FAILURE;
    }
}