/**
 * 权限控制指令
 * 用法: v-has-permission="'增删成员'"
 * 如果用户有该权限则显示元素，否则隐藏
 */
export default {
    install(app) {
        app.directive('has-permission', {
            mounted(el, binding) {
                checkPermission(el, binding);
            },
            updated(el, binding) {
                checkPermission(el, binding);
            }
        });
    }
};

function checkPermission(el, binding) {
    // 获取权限值，支持字符串或数组
    const permission = binding.value;
    
    // 从 localStorage 获取用户信息
    const userInfoStr = localStorage.getItem('localUserInfo');
    if (!userInfoStr) {
        el.style.display = 'none';
        return;
    }

    try {
        const userInfo = JSON.parse(userInfoStr);
        const permissions = userInfo.agriculturalPermissions || [];

        // 如果权限是字符串，检查是否包含
        if (typeof permission === 'string') {
            const hasPermission = permissions.includes(permission);
            el.style.display = hasPermission ? '' : 'none';
        }
        // 如果权限是数组，检查是否包含任一权限
        else if (Array.isArray(permission)) {
            const hasPermission = permission.some(p => permissions.includes(p));
            el.style.display = hasPermission ? '' : 'none';
        }
        // 如果没有传入权限值，默认隐藏
        else {
            el.style.display = 'none';
        }
    } catch (error) {
        console.error('解析用户信息失败:', error);
        el.style.display = 'none';
    }
}