<?php
/**
 * 企业列表接口  GET/POST /api/company/list.php
 * 参数：page / limit / keyword（公司名/注册号）/ industry / business_role / country / is_active
 * 返回：{ list, total, page, limit }
 */
require_once __DIR__ . '/../common/db.php';
require_once __DIR__ . '/../common/response.php';
require_once __DIR__ . '/../common/auth.php';

checkPermission('company');

[$page, $limit] = pageParams();
$keyword  = trim($_REQUEST['keyword'] ?? '');
$industry = trim($_REQUEST['industry'] ?? '');
$role     = trim($_REQUEST['business_role'] ?? '');
$country  = trim($_REQUEST['country'] ?? '');
$active   = isset($_REQUEST['is_active']) && $_REQUEST['is_active'] !== '' ? (int)$_REQUEST['is_active'] : null;

$where  = ['is_active = 1'];
$params = [];
if ($active !== null) {
    $where = [];
    $params = [];
    $where[] = 'is_active = ?';
    $params[] = $active;
}
if ($keyword !== '') {
    $where[] = '(display_name LIKE ? OR name_zh LIKE ? OR name_en LIKE ? OR registration_number LIKE ?)';
    $like = "%$keyword%";
    array_push($params, $like, $like, $like, $like);
}
if ($industry !== '') {
    $where[] = 'industry = ?';
    $params[] = $industry;
}
if ($role !== '') {
    $where[] = 'business_role = ?';
    $params[] = $role;
}
if ($country !== '') {
    $where[] = 'country = ?';
    $params[] = $country;
}
$whereSql = implode(' AND ', $where);

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

$stmt = $pdo->prepare("SELECT COUNT(*) FROM companies WHERE $whereSql");
$stmt->execute($params);
$total = (int)$stmt->fetchColumn();

$offset = ($page - 1) * $limit;
$stmt = $pdo->prepare(
    "SELECT id, name_zh, name_en, display_name, business_role, country, registration_number,
            address, legal_representative, industry, industry_subdivision, website,
            latest_employee_count, latest_annual_revenue, is_listed, stock_code,
            is_active, created_at, updated_at
     FROM companies
     WHERE $whereSql
     ORDER BY id DESC
     LIMIT $limit OFFSET $offset"
);
$stmt->execute($params);
$list = $stmt->fetchAll();

Response::success(['list' => $list, 'total' => $total, 'page' => $page, 'limit' => $limit]);