把资料库产色的几个文件提交，汇出挂单功能的数据，状态数据要有才能运行

web/App_Code/api/guadanOrderGuestController.cs

@@ -191,8 +191,6 @@ public class guadanOrderGuestController : ApiController
             _db.RegionAndRoomAndBedSchedule.Add(schedul);
         }
         await _db.SaveChangesAsync();
-        await _db.SaveChangesAsync();
-
         return Ok();
     }
 
@@ -328,7 +326,56 @@ public class guadanOrderGuestController : ApiController
         await _db.SaveChangesAsync();
         return Ok();
     }
+    [HttpPost]
+    [Route("api/guadanorderguest/xuzhu")]
+    public async Task<IHttpActionResult> ExtendStay([FromBody] XuZhuModel model)
+    {
+        //续住方法
+        if (model == null)
+            return BadRequest("请求数据为空");
 
+        if (model.GuestUuid == Guid.Empty || model.GuestBedUuid == Guid.Empty)
+            return BadRequest("GuestUuid 或 GuestBedUuid 无效");
+        var guest= await _db.GuaDanOrderGuest.FindAsync(model.GuestUuid);
+        if (guest == null)
+        {
+            return BadRequest("挂单不存在");
+        }
+        if(guest.BedUuid != model.GuestBedUuid)
+        {
+            return BadRequest("床位不正确");
+        }
+        var bedIsCanUse = await RegionAndRoomAndBedSchedule.IsBedAvailableAsync(_db,model.GuestBedUuid, model.CurrentCheckoutDate, model.NewCheckoutDate);
+        if(!bedIsCanUse)
+        {
+            return BadRequest("该床位在续住时间段内被预定，无法续住");
+        }
+
+        var newStartDate = model.CurrentCheckoutDate.Date;
+        var newEndDate = model.NewCheckoutDate.Date.AddDays(-1);
+        if (newEndDate < newStartDate)
+            return BadRequest("续住日期区间无效");
+        for (var date = newStartDate; date <= newEndDate; date = date.AddDays(1))
+        {
+            var newSchedule = new RegionAndRoomAndBedSchedule
+            {
+                GuaDanOrderNo = guest.GuaDanOrderNo,
+                Uuid = Guid.NewGuid(),
+                TargetUuid = model.GuestBedUuid,
+                GuaDanOrderGuestUuid = model.GuestUuid,
+                ScheduleDate = date,
+                Title = "续住挂单",   // 一天一条，开始和结束是同一天
+                Description = "续住挂单",
+                UseType = 30,
+                CreatedAt = DateTime.UtcNow
+            };
+
+            _db.RegionAndRoomAndBedSchedule.Add(newSchedule);
+        }
+        guest.CheckOutAt = model.NewCheckoutDate.Date;
+        await _db.SaveChangesAsync(); // 保存数据库操作
+        return Ok(new { message = "续住成功" });
+    }
     [HttpPost]
     [Route("api/guadanorderguest/cancel")]
     public async Task<IHttpActionResult> CancelGuadanGuest([FromUri] Guid uuid)
@@ -541,12 +588,23 @@ public class guadanOrderGuestController : ApiController
             if (guest.BedUuid != null)
             {
                 var bed = _db.RegionRoomBed.FirstOrDefault(b => b.Uuid == guest.BedUuid);
-                if (bed != null && StatusTransitionManager.CanTransition(bed.StatusCode, "102")) // 102 = 占用
+                if(bed == null)
+                {
+                    return BadRequest("入住床位不存在");
+                }
+                if (StatusTransitionManager.CanTransition(bed.StatusCode, "102")) // 102 = 占用
                 {
                     bed.StatusCode = "102";
                 }
+                else
+                {
+                    return BadRequest($"当前床位状态：{bed.RegionRoomBedStatus.Name} 不能入住");
+                }
+            }
+            else if(guest.BedUuid == null)
+            {
+                return BadRequest("入住床位不存在");
             }
-
             _db.SaveChanges();
 
             return Ok(new { message = "入住成功", statusCode = guest.StatusCode });
@@ -593,5 +651,12 @@ public class guadanOrderGuestController : ApiController
         public int num { get; set; }
         public string u_name { get; set; }
     }
+    public class XuZhuModel
+    {
+        public Guid GuestUuid { get; set; }         // 不可为空
+        public Guid GuestBedUuid { get; set; }      // 不可为空
+        public DateTime CurrentCheckoutDate { get; set; } // 当前退房时间
+        public DateTime NewCheckoutDate { get; set; }     // 新退房时间
+    }
 
 }