<?php

namespace app\common\library\ps;

use app\common\library\Auth as FrontendAuth;

/**
 * 工厂端成员权限。管理员始终全开；操作员按 factory_perms 限制。
 */
class FactoryPerm
{
    const ALWAYS = ['factory.view'];

    /**
     * 可分配给操作员的权限（不含管理员专属）
     * @return array
     */
    public static function catalog()
    {
        return [
            ['key' => 'workorder.view', 'label' => '查看工单', 'group' => '工单套打'],
            ['key' => 'workorder.edit', 'label' => '新建 / 编辑工单', 'group' => '工单套打'],
            ['key' => 'workorder.delete', 'label' => '删除工单', 'group' => '工单套打'],
            ['key' => 'workorder.import', 'label' => '文件导入工单', 'group' => '工单套打'],
            ['key' => 'product.view', 'label' => '查看产品', 'group' => '产品工艺'],
            ['key' => 'product.edit', 'label' => '新建 / 编辑产品', 'group' => '产品工艺'],
            ['key' => 'product.delete', 'label' => '删除产品', 'group' => '产品工艺'],
            ['key' => 'product.import', 'label' => '文件导入产品', 'group' => '产品工艺'],
            ['key' => 'template.view', 'label' => '查看模板', 'group' => '本厂模板'],
            ['key' => 'template.edit', 'label' => '修改本厂模板', 'group' => '本厂模板'],
            ['key' => 'template.delete', 'label' => '删除本厂模板', 'group' => '本厂模板'],
            ['key' => 'print.do', 'label' => '套打打印', 'group' => '套打'],
            ['key' => 'print.view', 'label' => '查看打印记录', 'group' => '套打'],
            ['key' => 'print.delete', 'label' => '删除打印记录', 'group' => '套打'],
            ['key' => 'market.view', 'label' => '浏览商城', 'group' => '模板商城'],
            ['key' => 'market.buy', 'label' => '购买模板', 'group' => '模板商城'],
        ];
    }

    /**
     * @return string[]
     */
    public static function keys()
    {
        $keys = [];
        foreach (self::catalog() as $item) {
            $keys[] = $item['key'];
        }
        return $keys;
    }

    /**
     * @param string $key
     * @return string
     */
    public static function label($key)
    {
        foreach (self::catalog() as $item) {
            if ($item['key'] === $key) {
                return $item['label'];
            }
        }
        if ($key === 'factory.view') {
            return '查看本厂信息';
        }
        return $key;
    }

    /**
     * 未单独配置时，操作员默认拥有全部业务权限（与上线前行为一致）
     * @return string[]
     */
    public static function defaults()
    {
        return array_values(array_unique(array_merge(self::ALWAYS, self::keys())));
    }

    /**
     * @param mixed $raw
     * @return string[]|null null 表示沿用默认
     */
    public static function decode($raw)
    {
        if ($raw === null || $raw === '') {
            return null;
        }
        if (is_array($raw)) {
            $list = $raw;
        } else {
            $list = json_decode((string)$raw, true);
        }
        if (!is_array($list)) {
            return null;
        }
        return self::normalize($list, false);
    }

    /**
     * @param array $keys
     * @param bool  $keepAlways
     * @return string[]
     */
    public static function normalize(array $keys, $keepAlways = true)
    {
        $allow = array_flip(self::keys());
        $out = [];
        foreach ($keys as $key) {
            $key = trim((string)$key);
            if ($key !== '' && isset($allow[$key])) {
                $out[$key] = $key;
            }
        }
        $implies = [
            'workorder.edit'   => 'workorder.view',
            'workorder.delete' => 'workorder.view',
            'workorder.import' => 'workorder.view',
            'product.edit'     => 'product.view',
            'product.delete'   => 'product.view',
            'product.import'   => 'product.view',
            'template.edit'    => 'template.view',
            'template.delete'  => 'template.view',
            'print.delete'     => 'print.view',
            'market.buy'       => 'market.view',
        ];
        foreach ($implies as $from => $to) {
            if (isset($out[$from])) {
                $out[$to] = $to;
            }
        }
        if ($keepAlways) {
            foreach (self::ALWAYS as $key) {
                $out[$key] = $key;
            }
        }
        return array_values($out);
    }

    /**
     * @param mixed $raw
     * @return string[]
     */
    public static function resolve($raw)
    {
        $decoded = self::decode($raw);
        return $decoded === null ? self::defaults() : self::normalize($decoded, true);
    }

    /**
     * @param string $perm
     * @return bool
     */
    public static function can($perm)
    {
        $perm = trim((string)$perm);
        if ($perm === '') {
            return true;
        }
        if (FactoryContext::bypass() || FactoryContext::isApiBound()) {
            return true;
        }
        if (FactoryContext::isOwner()) {
            return true;
        }
        $auth = FrontendAuth::instance();
        if (!$auth || !$auth->isLogin()) {
            return false;
        }
        $raw = isset($auth->factory_perms) ? $auth->factory_perms : '';
        return in_array($perm, self::resolve($raw), true);
    }

    /**
     * @param array $perms
     * @return bool
     */
    public static function canAny(array $perms)
    {
        foreach ($perms as $perm) {
            if (self::can($perm)) {
                return true;
            }
        }
        return false;
    }

    /**
     * @param string $perm
     * @return bool
     */
    public static function deny($perm)
    {
        return !self::can($perm);
    }

    /**
     * 当前登录成员的有效权限
     * @return string[]
     */
    public static function current()
    {
        if (FactoryContext::bypass() || FactoryContext::isApiBound() || FactoryContext::isOwner()) {
            return array_values(array_unique(array_merge(['*:*:*'], self::defaults())));
        }
        $auth = FrontendAuth::instance();
        if (!$auth || !$auth->isLogin()) {
            return self::ALWAYS;
        }
        $raw = isset($auth->factory_perms) ? $auth->factory_perms : '';
        return self::resolve($raw);
    }
}