<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
use Modules\EcommerceFinance\Services\AccountLedgerRemarkMap;
use PhpOffice\PhpSpreadsheet\IOFactory;
use Throwable;

/**
 * 导入「平台 | 账单项目 | 总账备注」映射表，供店铺收款账户账单的「总账备注」列使用。
 */
class ImportAccountLedgerRemarks extends Command
{
    protected $signature = 'account-ledger-remarks:import {path : xlsx/csv 文件} {--sheet=1 : 工作表序号（从 1 开始）或名称} {--replace : 先清空再导入（默认按平台+账单项目覆盖）}';

    protected $description = '导入账单项目对应的总账备注映射表';

    public function handle(AccountLedgerRemarkMap $map): int
    {
        $path = (string) $this->argument('path');
        if (! is_file($path)) {
            $this->error('文件不存在：' . $path);

            return self::FAILURE;
        }

        try {
            $rows = $this->readRows($path);
        } catch (Throwable $e) {
            $this->error('读取失败：' . $e->getMessage());

            return self::FAILURE;
        }

        if ($rows === []) {
            $this->error('没有解析到有效数据（需要表头：平台 / 账单项目 / 总账备注）。');

            return self::FAILURE;
        }

        $now = now();
        DB::transaction(function () use ($rows, $now): void {
            if ($this->option('replace')) {
                DB::table('ec_account_ledger_remarks')->delete();
            }

            foreach (array_chunk($rows, 500) as $chunk) {
                DB::table('ec_account_ledger_remarks')->upsert(
                    array_map(static fn (array $row): array => $row + ['created_at' => $now, 'updated_at' => $now], $chunk),
                    ['platform', 'bill_item'],
                    ['ledger_remark', 'updated_at'],
                );
            }
        });

        $map->forget();

        $platforms = [];
        foreach ($rows as $row) {
            $platforms[$row['platform']] = ($platforms[$row['platform']] ?? 0) + 1;
        }
        ksort($platforms);

        $this->info(sprintf('已导入 %d 条总账备注映射。', count($rows)));
        foreach ($platforms as $platform => $count) {
            $this->line(sprintf('  %s：%d 条', $platform, $count));
        }

        return self::SUCCESS;
    }

    /**
     * @return list<array{platform:string,bill_item:string,ledger_remark:string}>
     */
    private function readRows(string $path): array
    {
        $extension = strtolower(pathinfo($path, PATHINFO_EXTENSION));
        $readerType = match ($extension) {
            'xlsx' => 'Xlsx',
            'xls' => 'Xls',
            'csv' => 'Csv',
            default => throw new \InvalidArgumentException('只支持 xlsx / xls / csv 文件。'),
        };

        $reader = IOFactory::createReader($readerType);
        $reader->setReadDataOnly(true);
        if ($readerType === 'Csv') {
            $reader->setInputEncoding('UTF-8');
        }
            $book = $reader->load($path);
            $sheetOption = trim((string) $this->option('sheet'));
            if ($sheetOption !== '' && ctype_digit($sheetOption)) {
                $index = (int) $sheetOption - 1;
                if ($index < 0 || $index >= $book->getSheetCount()) {
                    throw new \InvalidArgumentException('工作表序号超出范围：' . $sheetOption);
                }
                $sheet = $book->getSheet($index);
            } else {
                $sheet = $sheetOption === '' ? $book->getActiveSheet() : $book->getSheetByName($sheetOption);
                if ($sheet === null) {
                    throw new \InvalidArgumentException('找不到工作表：' . $sheetOption);
                }
            }

        $rows = [];
        $header = null;
        foreach ($sheet->getRowIterator() as $row) {
            $cells = [];
            $cellIterator = $row->getCellIterator();
            $cellIterator->setIterateOnlyExistingCells(false);
            foreach ($cellIterator as $cell) {
                $cells[] = trim((string) $cell->getValue());
            }

            if ($header === null) {
                $cells[0] = preg_replace('/^\xEF\xBB\xBF/', '', $cells[0] ?? '');
                $header = $cells;
                continue;
            }

            $platform = trim($cells[0] ?? '');
            $item = trim($cells[1] ?? '');
            $remark = trim($cells[2] ?? '');
            if ($platform === '' || $item === '') {
                continue;
            }

            $rows[] = [
                'platform' => mb_substr($platform, 0, 32),
                'bill_item' => mb_substr($item, 0, 191),
                'ledger_remark' => mb_substr($remark, 0, 191),
            ];
        }

        return $rows;
    }
}