using Infrastructure.Attribute;
using ZR.Model.Business;
using ZR.Model.System;
using ZR.Repository;
using ZR.Service.Business.IBusinessService;

namespace ZR.Service.Business
{
    /// <summary>
    /// 用户模块权限Service业务层处理
    /// </summary>
    [AppService(ServiceType = typeof(IOdfUserModulesService), ServiceLifetime = LifeTime.Transient)]
    public class OdfUserModulesService : BaseService<OdfUserModules>, IOdfUserModulesService
    {
        /// <summary>
        /// 获取用户的功能版块列表
        /// </summary>
        /// <param name="userId"></param>
        /// <returns></returns>
        public List<string> GetUserModules(long userId)
        {
            return Queryable()
                .Where(x => x.UserId == userId)
                .Select(x => x.ModuleCode)
                .ToList();
        }

        /// <summary>
        /// 获取用户列表（userId, userName）
        /// </summary>
        /// <returns></returns>
        public List<dynamic> GetUserList()
        {
            return Context.Queryable<SysUser>()
                .Where(u => u.DelFlag == 0 && u.Status == 0)
                .Select(u => new { u.UserId, u.NickName })
                .ToList()
                .Select(u => (dynamic)new { u.UserId, userName = u.NickName })
                .ToList();
        }

        /// <summary>
        /// 保存用户模块权限（先删后插，事务保证原子性）
        /// </summary>
        /// <param name="userId"></param>
        /// <param name="modules"></param>
        /// <returns></returns>
        public int SaveUserModules(long userId, List<string> modules)
        {
            var result = UseTran(() =>
            {
                // 先删除该用户的所有模块权限
                Deleteable()
                    .Where(x => x.UserId == userId)
                    .ExecuteCommand();

                // 再插入新的模块权限
                if (modules != null && modules.Count > 0)
                {
                    var list = modules.Select(m => new OdfUserModules
                    {
                        UserId = userId,
                        ModuleCode = m,
                        CreatedAt = DateTime.Now
                    }).ToList();

                    Insert(list);
                }
            });

            return result.IsSuccess ? 1 : 0;
        }
    }
}