Second upload

WebApi_data_value/Program.cs

@@ -19,11 +19,15 @@ builder.Services.AddCors();
 builder.Services.AddControllers();
 
 //執行每日存取剩餘車位
+builder.Services.AddHostedService<ParkingService>();// 更新月租車位
 builder.Services.AddScoped<ExcelGenerationService>(); // ExcelGenerationService 下載Excel
 builder.Services.AddHostedService<DailyExcelGenerationService>(); //  每天設定ExcelGenerationService 存取剩餘車位
 builder.Services.AddHostedService<ParkingLogCleanupService>(); //執行定期清除3個月前剩餘車位
 builder.Services.AddHostedService<ParkingUpdateService>();  //執行每一分鐘更新剩餘車位
 
+builder.Logging.SetMinimumLevel(LogLevel.Information); // 設置日誌
+
+
 // 連線PostgreSQL資料庫
 var connectionString = "Server=140.125.20.183;UserID=postgres;password=EL404el404;Database=postgres;port=5432;Search Path=public;CommandTimeout=1800";
 //var connectionString = "Server=127.0.0.1;UserID=postgres;password=EL404el404;Database=postgres;port=5432;Search Path=public;CommandTimeout=1800";

WebApi_data_value/Services/BackgroundService.cs

@@ -7,7 +7,105 @@ using System.Threading;
 using System.Threading.Tasks;
 using Parking_space_WebAPI.Services;
 using WebApi_data_value.Models;
-// 執行計算剩餘車位並不為負數存入資料庫ParkingLogs
+using Microsoft.Extensions.Logging; // 確保引用
+using System.Linq;
+
+#region 從進入車輛獲取最新的月租名單
+public class ParkingService : BackgroundService
+{
+    private readonly IServiceScopeFactory _scopeFactory;
+    private readonly ILogger<ParkingService> _logger;
+
+    public ParkingService(IServiceScopeFactory scopeFactory, ILogger<ParkingService> logger)
+    {
+        _scopeFactory = scopeFactory;
+        _logger = logger;
+    }
+
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        await PerformParkingCheckAsync(stoppingToken);
+        while (!stoppingToken.IsCancellationRequested)
+        {
+            await Task.Delay(TimeSpan.FromSeconds(50), stoppingToken); //每50秒執行
+            await PerformParkingCheckAsync(stoppingToken);
+        }
+    }
+
+    private async Task PerformParkingCheckAsync(CancellationToken stoppingToken)
+    {
+        using (var scope = _scopeFactory.CreateScope())
+        {
+            var _context = scope.ServiceProvider.GetRequiredService<SqlContext>();
+
+            var now = DateTime.Now;
+            var startTime = now.AddHours(-12);   // 獲取最近 12 小時進入的車輛
+            var inCars = await _context.yuntech_in_car_table
+                .Where(car => car.in_time >= startTime)
+                .ToListAsync(stoppingToken);
+
+            // 獲取月租名單
+            var monthlyUsers = await _context.yuntech_parking_user_list.ToListAsync(stoppingToken);
+
+            var monthlycar = 0;
+            var temporarycar = 0;
+
+            foreach (var car in inCars)
+            {
+                var matchedUsers = monthlyUsers
+                    .Where(user => user.user_license_plate_number == car.license_plate_number)
+                    .ToList();
+
+                if (matchedUsers.Count > 0)
+                {
+                    
+                    if (matchedUsers.Count % 2 == 1)
+                    {
+                        monthlycar++;
+                    }
+                    else
+                    {
+                        monthlycar--;
+                    }
+                }
+                else
+                {
+                    temporarycar++;
+                }
+            }
+            _logger.LogInformation($"月租車位數量: {monthlycar}");
+            _logger.LogInformation($"臨停車位數量: {temporarycar}");
+
+           
+            await UpdateMonthly(_context, monthlycar, temporarycar, stoppingToken); //更新月租跟臨停
+        }
+    }
+
+    private async Task UpdateMonthly(SqlContext context, int monthlycar, int temporarycar, CancellationToken stoppingToken)
+    {
+        
+        var monthlyRentData = await context.yuntech_monthly_rent_number
+            .FirstOrDefaultAsync(rent => rent.category == "月租", stoppingToken);
+
+        if (monthlyRentData != null)
+        {
+            monthlyRentData.number = monthlycar.ToString();
+        }
+        var temporaryRentData = await context.yuntech_monthly_rent_number
+            .FirstOrDefaultAsync(rent => rent.category == "臨停", stoppingToken);
+
+        if (temporaryRentData != null)
+        {
+            temporaryRentData.number = temporarycar.ToString();
+        }
+
+        await context.SaveChangesAsync(stoppingToken);
+    }
+}
+
+#endregion
+#region 執行計算剩餘車位並不為負數存入資料庫ParkingLogs
+
 public class ParkingUpdateService : BackgroundService
 {
     private readonly IServiceScopeFactory _scopeFactory;
@@ -90,3 +188,4 @@ public class ParkingUpdateService : BackgroundService
         }
     }
 }
+#endregion