using System;
using System.Collections.Generic;
using System.Reflection;
using System.Web.Mvc;
using NewLife.Log;
using XCode.Membership;

namespace NewLife.Cube
{
    /// <summary>控制器基类</summary>
    public class ControllerBaseX : Controller
    {
        #region 权限菜单
        /// <summary>获取可用于生成权限菜单的Action集合</summary>
        /// <param name="menu">该控制器所在菜单</param>
        /// <returns></returns>
        protected virtual IDictionary<MethodInfo, Int32> ScanActionMenu(IMenu menu)
        {
            var dic = new Dictionary<MethodInfo, Int32>();

            var type = this.GetType();
            // 添加该类型下的所有Action
            foreach (var method in type.GetMethods())
            {
                if (method.IsStatic || !method.IsPublic) continue;

                if (!typeof(ActionResult).IsAssignableFrom(method.ReturnType)) continue;

                if (method.GetCustomAttribute<HttpPostAttribute>() != null) continue;
                if (method.GetCustomAttribute<AllowAnonymousAttribute>() != null) continue;

                var att = method.GetCustomAttribute<EntityAuthorizeAttribute>();
                if (att == null)
                {
                    dic.Add(method, 0);
                }
                else
                {
                    var name = att.ResourceName;
                    var pm = (Int32)att.Permission;
                    if (name.IsNullOrEmpty() || name == type.Name.TrimEnd("Controller"))
                    {
                        dic.Add(method, pm);
                    }
                    else
                    {
                        // 指定了资源名称，也就是专有菜单
                        var nodeName = method.Name;
                        var dis = method.GetDisplayName();
                        var node = menu.Parent.FindByPath(nodeName);
                        if (node == null)
                        {
                            XTrace.WriteLine("为控制器{0}添加独立菜单{1}[{2}]", type.FullName, nodeName, name);
                            node = menu.Parent.Add(nodeName, dis, menu.Url + "/" + nodeName);
                        }

                        // 权限名
                        if (pm >= 0x10)
                            node.Permissions[pm] = dis ?? method.Name;
                        else if (att.Permission.ToString().Contains("|"))
                            node.Permissions[pm] = att.Permission.GetDescription();
                        else
                        {
                            // 附加的独立Action菜单，遍历所有权限位
                            var n = 1;
                            for (int i = 0; i < 8; i++)
                            {
                                var v = (PermissionFlags)n;
                                if (att.Permission.Has(v)) node.Permissions[n] = v.GetDescription();

                                n <<= 1;
                            }
                        }

                        node.Save();
                    }
                }
            }

            return dic;
        }
        #endregion
    }
}