<?php

namespace App\Console\Commands;

use App\Models\Business\InventoryWarehouseNameMapping;
use Carbon\CarbonImmutable;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
use PhpOffice\PhpSpreadsheet\IOFactory;

/**
 * 进销存报表 → 入库明细数据：按原始 Excel 原样导入，仓库简称用仓库名称映射表按「仓库」唯一匹配。
 */
class ImportInventoryInboundDetail extends Command
{
    protected $signature = 'inventory:inbound-detail:import {file : 入库明细表 Excel} {--month= : 统一指定月份（不传则按创建时间判断）}';

    protected $description = '导入进销存报表的入库明细数据';

    public function handle(): int
    {
        $file = (string) $this->argument('file');
        $connection = (string) config('upstream_mirrors.connection', 'business_mirror');
        $table = 'inventory_inbound_detail_rows';
        $forcedMonth = trim((string) ($this->option('month') ?? ''));
        $now = now();

        $maps = $this->shortNameMap();
        $this->info('仓库名称映射：仓库名 ' . count($maps['warehouse']) . ' 个、仓储方 ' . count($maps['provider']) . ' 个可唯一匹配');

        // 原样导入：以本次文件为准整体重建，不做去重、不做加工。
        DB::connection($connection)->table($table)->delete();

        $reader = IOFactory::createReaderForFile($file);
        $reader->setReadDataOnly(true);
        $sheet = $reader->load($file)->getSheet(0);

        $batch = [];
        $imported = 0;
        $mapped = 0;
        $skipped = 0;
        foreach ($sheet->getRowIterator(2) as $row) {
            $rowNumber = $row->getRowIndex();
            $cells = [];
            foreach ($row->getCellIterator('A', 'U') as $cell) {
                $cells[] = $cell->getFormattedValue();
            }
            $warehouse = trim((string) ($cells[14] ?? ''));
            $createdRaw = trim((string) ($cells[16] ?? ''));
            if ($warehouse === '' && $createdRaw === '') {
                $skipped++;
                continue;
            }

            $month = $forcedMonth !== '' ? $forcedMonth : $this->monthOf($createdRaw);
            if ($month === '') {
                $skipped++;
                continue;
            }

            // 一般用"仓库"匹配仓库简称；含"代发仓"字样的按"仓储方"匹配。
            $shortName = '';
            if ($warehouse !== '') {
                $shortName = str_contains($warehouse, '代发仓')
                    ? ($maps['provider'][$warehouse] ?? $maps['warehouse'][$warehouse] ?? '')
                    : ($maps['warehouse'][$warehouse] ?? '');
            }
            if ($shortName !== '') {
                $mapped++;
            }

            $batch[] = [
                'report_month' => $month . '-01',
                // 唯一键按 Excel 行号生成，保留原表每一行（含重复行）。
                'row_key' => sha1($month . '|' . $rowNumber),
                'source_no' => $this->text($cells[0] ?? ''),
                'document_no' => $this->text($cells[1] ?? ''),
                'created_serial' => $this->text($cells[2] ?? ''),
                'supplier' => $this->text($cells[3] ?? ''),
                'item_no' => $this->text($cells[4] ?? ''),
                'barcode' => $this->text($cells[5] ?? ''),
                'spec_name' => $this->text($cells[6] ?? ''),
                'quantity' => $this->number($cells[7] ?? ''),
                'unit_price' => $this->number($cells[8] ?? ''),
                'amount' => $this->number($cells[9] ?? ''),
                'estimated_unit_price' => $this->number($cells[10] ?? ''),
                'estimated_amount' => $this->number($cells[11] ?? ''),
                'supplier_barcode' => $this->text($cells[12] ?? ''),
                'remark' => $this->text($cells[13] ?? ''),
                'warehouse' => $warehouse !== '' ? $warehouse : null,
                'warehouse_short_name' => $shortName !== '' ? $shortName : null,
                'created_at_raw' => $this->moment($createdRaw),
                'express_name' => $this->text($cells[17] ?? ''),
                'express_no' => $this->text($cells[18] ?? ''),
                'not_sent' => $this->text($cells[19] ?? ''),
                'owner_name' => $this->text($cells[20] ?? ''),
                'imported_at' => $now,
            ];
            $imported++;

            if (count($batch) >= 1000) {
                DB::connection($connection)->table($table)->insertOrIgnore($batch);
                $this->info('已写入 ' . $imported . ' 行');
                $batch = [];
            }
        }

        if ($batch !== []) {
            DB::connection($connection)->table($table)->insertOrIgnore($batch);
        }

        $this->info(sprintf(
            '导入完成：%d 行，仓库简称匹配上 %d 行，跳过 %d 行；库中该表共 %d 行',
            $imported,
            $mapped,
            $skipped,
            DB::connection($connection)->table($table)->count(),
        ));

        return self::SUCCESS;
    }

    /**
     * @return array{warehouse:array<string,string>,provider:array<string,string>}
     *         仅保留能唯一匹配的键
     */
    private function shortNameMap(): array
    {
        $rows = InventoryWarehouseNameMapping::withoutGlobalScopes()
            ->get(['warehouse_provider', 'warehouse', 'warehouse_short_name']);
        $grouped = [];
        foreach ($rows as $row) {
            $warehouse = trim((string) $row->warehouse);
            if ($warehouse === '') {
                continue;
            }
            $grouped[$warehouse][] = trim((string) $row->warehouse_short_name);
        }

        $byWarehouse = [];
        foreach ($grouped as $warehouse => $names) {
            $unique = array_values(array_unique($names));
            if (count($unique) === 1 && $unique[0] !== '') {
                $byWarehouse[$warehouse] = $unique[0];
            }
        }

        $byProvider = [];
        foreach ($rows as $row) {
            $provider = trim((string) $row->warehouse_provider);
            if ($provider === '') {
                continue;
            }
            $byProvider[$provider][] = trim((string) $row->warehouse_short_name);
        }
        foreach ($byProvider as $provider => $names) {
            $unique = array_values(array_unique($names));
            if (count($unique) === 1 && $unique[0] !== '') {
                $byProvider[$provider] = $unique[0];
            }
        }

        return ['warehouse' => $byWarehouse, 'provider' => $byProvider];
    }

    private function monthOf(string $value): string
    {
        $value = trim($value);
        if ($value === '') {
            return '';
        }
        foreach (['Y/m/d H:i:s', 'Y-m-d H:i:s', 'Y/m/d', 'Y-m-d'] as $format) {
            $parsed = \DateTimeImmutable::createFromFormat($format, $value);
            if ($parsed instanceof \DateTimeImmutable) {
                return $parsed->format('Y-m');
            }
        }
        $timestamp = strtotime($value);

        return $timestamp === false ? '' : date('Y-m', $timestamp);
    }

    private function moment(string $value): ?string
    {
        $value = trim($value);
        if ($value === '') {
            return null;
        }
        $timestamp = strtotime($value);

        return $timestamp === false ? null : date('Y-m-d H:i:s', $timestamp);
    }

    private function text(mixed $value): ?string
    {
        $text = trim((string) $value);

        return $text === '' ? null : $text;
    }

    private function number(mixed $value): ?float
    {
        $text = str_replace(',', '', trim((string) $value));
        if ($text === '' || ! is_numeric($text)) {
            return null;
        }

        return (float) $text;
    }
}