App_V2.3/SourceCode/WeApp.EntityFramework/SeedData/DefaultAppGuidsCreator.cs

using System.Linq;
using WeApp.BaseInfo;
using WeApp.EF;
using IwbZero.Authorization.Base.SystemInfo;

namespace WeApp.SeedData
{
    public class DefaultAppGuidsCreator
    {
        private readonly WeAppDbContext _context;

        public DefaultAppGuidsCreator(WeAppDbContext context)
        {
            _context = context;
        }

        public void Create()
        {
            _context.TruncateTable("[dbo].[Sys_AppGuids]");
            AddAppGuidIfNotExists((short)AppGuidType.UserNo);
            AddAppGuidIfNotExists((short)AppGuidType.Guest);
            AddAppGuidIfNotExists((short)AppGuidType.DataLib, 1000);

        }

        private void AddAppGuidIfNotExists(short type, int start = 100000, short step = 1)
        {
            if (_context.SysAppGuids.Any(s => s.IdType == type))
                return;
            _context.SysAppGuids.Add(new SysAppGuid()
            {
                IdType = type,
                LastId = start,
                Step = step,
            });
            _context.SaveChanges();
        }

    }
}