<?php
/**
 * 企业 CSV 导入接口  POST /api/company/import.php  (multipart/form-data, 字段名 file)
 * CSV 表头：name_zh,name_en,display_name,business_role,country,registration_number,address,
 *           legal_form,legal_representative,industry,industry_subdivision,website,
 *           registered_capital,established_date,is_listed,stock_code
 * 仅 display_name 为必填。
 */
require_once __DIR__ . '/../common/db.php';
require_once __DIR__ . '/../common/response.php';
require_once __DIR__ . '/../common/auth.php';
require_once __DIR__ . '/../common/logger.php';
require_once __DIR__ . '/../common/completeness.php';

checkAjax();
checkPermission('company');

if (empty($_FILES['file']) || $_FILES['file']['error'] !== UPLOAD_ERR_OK) {
    Response::error('请选择要上传的CSV文件', 400);
}

$tmp = $_FILES['file']['tmp_name'];
$handle = fopen($tmp, 'r');
if (!$handle) {
    Response::error('无法读取文件', 400);
}

// 去掉 UTF-8 BOM
$first = fgets($handle);
$first = preg_replace('/^\xEF\xBB\xBF/', '', $first);
$header = str_getcsv(trim($first));

$map = [
    'name_zh' => 'name_zh', 'name_en' => 'name_en', 'display_name' => 'display_name',
    'business_role' => 'business_role', 'country' => 'country', 'registration_number' => 'registration_number',
    'address' => 'address', 'legal_form' => 'legal_form', 'legal_representative' => 'legal_representative',
    'industry' => 'industry', 'industry_subdivision' => 'industry_subdivision', 'website' => 'website',
    'registered_capital' => 'registered_capital', 'established_date' => 'established_date',
    'is_listed' => 'is_listed', 'stock_code' => 'stock_code',
    'source_channel' => 'source_channel', 'source_detail' => 'source_detail',
];

$pdo = DB::getInstance()->getPdo();
$inserted = 0;
$failed = 0;

$stmt = $pdo->prepare(
    "INSERT INTO companies
        (name_zh, name_en, display_name, business_role, country, registration_number,
         address, legal_form, legal_representative, industry, industry_subdivision, website,
         registered_capital, established_date, is_listed, stock_code, source_channel, source_detail)
     VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)"
);

while (($row = fgetcsv($handle)) !== false) {
    $row = array_map('trim', $row);
    $rec = [];
    foreach ($header as $idx => $col) {
        $col = trim($col);
        if (isset($map[$col]) && isset($row[$idx])) {
            $rec[$map[$col]] = $row[$idx];
        }
    }
    if (empty($rec['display_name'])) {
        $failed++;
        continue;
    }
    $rec['established_date'] = ($rec['established_date'] ?? '') !== '' ? date('Y-m-d', strtotime($rec['established_date'])) : null;
    try {
        $stmt->execute([
            $rec['name_zh'] ?? null, $rec['name_en'] ?? null, $rec['display_name'],
            $rec['business_role'] ?? null, $rec['country'] ?? null, $rec['registration_number'] ?? null,
            $rec['address'] ?? null, $rec['legal_form'] ?? null, $rec['legal_representative'] ?? null,
            $rec['industry'] ?? null, $rec['industry_subdivision'] ?? null, $rec['website'] ?? null,
            $rec['registered_capital'] ?? null, $rec['established_date'],
            ($rec['is_listed'] ?? 0) ? 1 : 0, $rec['stock_code'] ?? null,
            $rec['source_channel'] ?? null, $rec['source_detail'] ?? null,
        ]);
        // 完整度检查（导入每行入库后）
        updateIncomplete($pdo, 'companies', (int)$pdo->lastInsertId());
        $inserted++;
    } catch (Exception $e) {
        $failed++;
    }
}
fclose($handle);

logCurrent('import', 'company', 'companies', null, ['inserted' => $inserted, 'failed' => $failed]);
Response::success(['inserted' => $inserted, 'failed' => $failed], "导入完成：成功 $inserted 条，失败 $failed 条");