QRAPI/API/Wood.Service/Controllers/NormalBaseController.cs

using Magicodes.ExporterAndImporter.Core;
using Magicodes.ExporterAndImporter.Excel;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;
using TaskManager.Entity;
using TaskManager.EntityFramework;
using TaskManager.EntityFramework.Repository;

namespace Wood.Service.Controllers
{
    [AllowAnonymous]
    public  class NormalBaseController<T>:ControllerBase where T:BaseEntity
    {

        protected readonly JobDbContext _context;
        protected readonly IServiceProvider _builder;
        protected readonly IConfiguration _configuration;
        protected readonly IRepository<T> _repository;
        public NormalBaseController(JobDbContext context, IServiceProvider builder, IConfiguration configuration, IRepository<T> repository)
        {
            _builder = builder;
            _context = context;
            _configuration = configuration;
            _repository = repository;
        }


        /// <summary>
        /// 通过UID获得实体
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        [HttpGet("{id}")]
        public async Task<ActionResult<T>> GetById(int id)
        {
            var entity = await _repository.GetByIdAsync(id);
            if (entity == null) return NotFound();
            return entity;
        }

        /// <summary>
        /// 创建实体
        /// </summary>
        /// <param name="entity"></param>
        /// <returns></returns>
        [HttpPost]
        public async Task<ActionResult<T>> Create(T entity)
        {
            entity.CreationTime = DateTime.Now;
            var createdEntity = await _repository.AddAsync(entity);
            return new JsonResult(new { Code = 200, Message = "创建成功!" });
        }
        /// <summary>
        /// 更新实体UID
        /// </summary>
        /// <param name="entity"></param>
        /// <returns></returns>
        [HttpPut("{id}")]
        public async Task<IActionResult> Update(T entity)
        {
            var _first = await _repository.GetByIdAsync(entity.UId);
            if (_first == null)
            {
                return new JsonResult(new { Code = 400, Message = "修改失败!" });
            }


            await _repository.UpdateAsync(entity);
            return new JsonResult(new { Code = 200, Message = "修改成功!" });
        }
        /// <summary>
        /// 删除实体通过UID
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        [HttpDelete("{id}")]
        public async Task<IActionResult> Delete(int id)
        {
            await _repository.DeleteAsync(id);
            return new JsonResult(new { Code = 200, Message = "删除成功!" }); ;
        }


        [HttpGet]
        public async Task<ActionResult<PagedResult<T>>> GetPaged(
        [FromQuery] int pageNumber = 1,
        [FromQuery] int pageSize = 10,
        [FromQuery] string sortBy = "",
        [FromQuery] bool isAscending = true,
        [FromQuery] Dictionary<string, string> filters = null)
        {
            var pagingParams = new PagingParams
            {
                PageNumber = pageNumber,
                PageSize = pageSize,
                SortBy = sortBy,
                IsAscending = isAscending,
                Filters = filters
            };

            // 可以在这里构建表达式树过滤条件
            Expression<Func<T, bool>> filter = null;

            var pagedResult = await _repository.GetPagedAsync(filter, pagingParams);
            return Ok(pagedResult);
        }


        public async Task<FileStreamResult> Export<T>([FromQuery] int pageNumber = 1,
        [FromQuery] int pageSize = 10,
        [FromQuery] string sortBy = "",
        [FromQuery] bool isAscending = true,
        [FromQuery] Dictionary<string, string> filters = null) where T : class, new()
        {
            var pagingParams = new PagingParams
            {
                PageNumber = pageNumber,
                PageSize = pageSize,
                SortBy = sortBy,
                IsAscending = isAscending,
                Filters = filters
            };

            // 可以在这里构建表达式树过滤条件
            Expression<Func<T, bool>> filter = null;

            var pagedResult = await _repository.GetPagedAsync(null, pagingParams);
            return await ExportFile<T>(pagedResult.Data as ICollection<T>, Guid.NewGuid().ToString() + ".xlsx");


        }
        protected async Task<FileStreamResult> ExportFile<T>(ICollection<T> dtos, string fileName) where T: class, new()
        {
            var excelExporter = HttpContext.RequestServices.GetRequiredService<IExcelExporter>();
            var res = await excelExporter.ExportAsByteArray<T>(dtos);
            return new FileStreamResult(new MemoryStream(res), "application/octet-stream") { FileDownloadName = DateTime.Now.ToString("yyyyMMddHHmm") + "_" + fileName };
        }


        [HttpGet]
        public async Task<IActionResult> GetImportTemplate<T>() where T: class, new()
        {
            try
            {
                // 创建导入模板生成器
                var importer = new ExcelImporter();

                // 生成导入模板流（这里假设使用 YourModel 作为导入模型）
                byte[] by = await importer.GenerateTemplateBytes<T>();
                using var stream = new MemoryStream(by);
                stream.Seek(0, SeekOrigin.Begin);

                // 设置友好的文件名，例如："导入模板_20250530.xlsx"
                var fileName = $"导入模板_{DateTime.Now:yyyyMMdd}.xlsx";

                // 返回文件流结果
                return File(
                    fileStream: stream,
                    contentType: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
                    fileDownloadName: fileName);
            }
            catch (Exception ex)
            {
                // 记录异常日志
                Console.WriteLine($"生成导入模板时出错: {ex.Message}");

                // 返回错误响应
                return StatusCode(500, "生成导入模板时发生错误");
            }
        }





    }
}