Initial commit

WebApi_data_value/Controllers/ExcelControlle.cs

@@ -0,0 +1,84 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using OfficeOpenXml; // 引入 EPPlus 套件
+using WebApi_data_value.Models; // 更新為正確的命名空間
+using Microsoft.EntityFrameworkCore;
+using Parking_space_WebAPI.Services;
+
+namespace WebApi_data_value.Controllers
+{
+    [Route("api/[controller]")]
+    [ApiController]
+    public class ExcelController : ControllerBase
+    {
+        private readonly SqlContext _context;
+
+        public ExcelController(SqlContext context)
+        {
+            _context = context;
+        }
+
+        // GET: api/Excel/Download
+        [HttpGet("Download")]
+        public async Task<IActionResult> DownloadExcel()
+        {
+            // 從資料庫中讀取 yuntech_parking 表的數據
+            var parkingSpaces = await _context.yuntech_parking.ToListAsync();
+
+            if (parkingSpaces == null || !parkingSpaces.Any())
+            {
+                return NotFound("No parking spaces data found.");
+            }
+
+            // 從資料庫中讀取月租車與臨停車的數據
+            var monthlyRent = await _context.yuntech_monthly_rent_number
+                .FirstOrDefaultAsync(x => x.category == "月租");
+            var temporaryParking = await _context.yuntech_monthly_rent_number
+                .FirstOrDefaultAsync(x => x.category == "臨停");
+
+            if (monthlyRent == null || temporaryParking == null)
+            {
+                return NotFound("No data found for monthly rent or temporary parking.");
+            }
+
+            var file = GenerateExcel(parkingSpaces, monthlyRent, temporaryParking);
+            var fileName = $"ParkingSpaces_{DateTime.Now:yyyyMMddHHmmss}.xlsx";
+            return File(file, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", fileName);
+        }
+
+        private byte[] GenerateExcel(IEnumerable<Yuntech_parking> parkingData, Yuntech_monthly_rent_number monthlyRent, Yuntech_monthly_rent_number temporaryParking)
+        {
+            using var package = new ExcelPackage();
+            var worksheet = package.Workbook.Worksheets.Add("Yuntech Parking");
+
+            // 設定標題
+            worksheet.Cells[1, 1].Value = "總車位";
+            worksheet.Cells[1, 2].Value = "剩餘車位";
+            worksheet.Cells[1, 3].Value = "月租車數量";
+            worksheet.Cells[1, 4].Value = "臨停數量";
+
+            // 添加下載時間
+            worksheet.Cells[1, 6].Value = "下載時間";
+            worksheet.Cells[2, 6].Value = DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss");
+
+            var row = 2;
+
+            // 添加每一行的數據
+            foreach (var item in parkingData)
+            {
+                worksheet.Cells[2, 1].Value = item.all_num;
+                worksheet.Cells[2, 2].Value = item.now_num;
+                row++;
+            }
+
+            // 添加月租車與臨停車的數據
+            worksheet.Cells[2, 3].Value = monthlyRent.number;
+            worksheet.Cells[2, 4].Value = temporaryParking.number;
+
+            return package.GetAsByteArray();
+        }
+    }
+}

WebApi_data_value/Program.cs

@@ -16,7 +16,8 @@ builder.Services.AddCors();
 // Add services to the container.
 builder.Services.AddControllers();
 
-
+// 註冊 ExcelGenerationService 為 HostedService  
+builder.Services.AddHostedService<ExcelGenerationService>(); // 如果不要自動保存就不要加
 
 // 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";

WebApi_data_value/Services/ExcelGenerationService.cs

@@ -0,0 +1,92 @@
+using System;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using OfficeOpenXml;
+using WebApi_data_value.Models; 
+using Microsoft.EntityFrameworkCore;
+
+namespace Parking_space_WebAPI.Services
+{
+    public class ExcelGenerationService : BackgroundService
+    {
+        private readonly IServiceProvider _serviceProvider;
+        private readonly string _saveDirectory = @"C:\Users\ste92\Desktop\parking-e\excel"; // 指定儲存 Excel 的資料夾
+
+        public ExcelGenerationService(IServiceProvider serviceProvider)
+        {
+            _serviceProvider = serviceProvider;
+        }
+
+        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+        {
+            while (!stoppingToken.IsCancellationRequested)
+            {
+                await GenerateAndSaveExcel();
+                await Task.Delay(TimeSpan.FromHours(1), stoppingToken); // 每小時執行一次
+                //await Task.Delay(TimeSpan.FromMinutes(2), stoppingToken); // 每 2 分鐘執行一次
+            }
+        }
+
+        private async Task GenerateAndSaveExcel()
+        {
+            using (var scope = _serviceProvider.CreateScope())
+            {
+                var _context = scope.ServiceProvider.GetRequiredService<SqlContext>();
+
+                // 從資料庫讀取數據
+                var parkingSpaces = await _context.yuntech_parking.ToListAsync();
+                var monthlyRent = await _context.yuntech_monthly_rent_number
+                    .FirstOrDefaultAsync(x => x.category == "月租");
+                var temporaryParking = await _context.yuntech_monthly_rent_number
+                    .FirstOrDefaultAsync(x => x.category == "臨停");
+
+                if (parkingSpaces != null && monthlyRent != null && temporaryParking != null)
+                {
+                    // 生成 Excel 文件
+                    var fileBytes = GenerateExcel(parkingSpaces, monthlyRent, temporaryParking);
+
+                    // 文件名帶上當前時間
+                    var fileName = $"ParkingSpaces_{DateTime.Now:yyyyMMddHHmmss}.xlsx";
+                    var filePath = Path.Combine(_saveDirectory, fileName);
+
+                    // 保存文件
+                    await File.WriteAllBytesAsync(filePath, fileBytes);
+                }
+            }
+        }
+
+        private byte[] GenerateExcel(IEnumerable<Yuntech_parking> parkingData, Yuntech_monthly_rent_number monthlyRent, Yuntech_monthly_rent_number temporaryParking)
+        {
+            using var package = new ExcelPackage();
+            var worksheet = package.Workbook.Worksheets.Add("Yuntech Parking");
+
+            // 設定標題
+            worksheet.Cells[1, 1].Value = "總車位";
+            worksheet.Cells[1, 2].Value = "剩餘車位";
+            worksheet.Cells[1, 3].Value = "月租車數量";
+            worksheet.Cells[1, 4].Value = "臨停數量";
+
+            // 添加下載時間
+            worksheet.Cells[1, 6].Value = "下載時間";
+            worksheet.Cells[2, 6].Value = DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss");
+
+            var row = 2;
+            foreach (var item in parkingData)
+            {
+                worksheet.Cells[row, 1].Value = item.all_num;
+                worksheet.Cells[row, 2].Value = item.now_num;
+                row++;
+            }
+
+            // 添加月租車與臨停車數據
+            worksheet.Cells[2, 3].Value = monthlyRent.number;
+            worksheet.Cells[2, 4].Value = temporaryParking.number;
+
+            return package.GetAsByteArray();
+        }
+    }
+}