<?php
namespace app\common\library;

use think\Db;

/** Canonical site identities shared by management and screen APIs. */
class GranarySite
{
    const NAMES = ['center' => '遵义中心库', 'xishui' => '习水库'];
    const STORAGE = ['center' => '遵义直属库有限公司中心库区', 'xishui' => '中央储备粮遵义直属库有限公司习水分公司'];

    public static function valid($site)
    {
        return is_string($site) && isset(self::NAMES[$site]);
    }

    public static function allowed($auth)
    {
        if ($auth->isSuperAdmin()) return array_keys(self::NAMES);
        $scope = Db::name('admin')->where('id', $auth->id)->value('granary_sites');
        return $scope === 'all' ? array_keys(self::NAMES) : (self::valid($scope) ? [$scope] : []);
    }

    public static function options(array $sites)
    {
        $options = [];
        foreach ($sites as $site) $options[] = ['id' => $site, 'name' => self::NAMES[$site], 'storage' => self::STORAGE[$site]];
        return $options;
    }

    public static function granaries(array $sites)
    {
        $rows = Db::name('granary')->where('site', 'in', $sites ?: ['__none__'])
            ->field('id,name,num,site,storage,varieties,granary_type')->order('site,num')->select();
        foreach ($rows as &$row) {
            $row['site_name'] = self::NAMES[$row['site']];
            $row['label'] = $row['site_name'] . ' · ' . $row['name'];
        }
        unset($row);
        return $rows;
    }

    public static function permits($gid, array $sites)
    {
        return (bool) Db::name('granary')->where('id', (int)$gid)->where('site', 'in', $sites ?: ['__none__'])->count();
    }
}