using Azure.Core;
using Dapper;
using Magicodes.ExporterAndImporter.Core.Extension;
using Magicodes.ExporterAndImporter.Excel;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using System.Data;
using System.Drawing.Printing;
using System.Linq.Expressions;
using System.Text;
using System.Text.Json;
using System.Text.Json.Serialization;
using TaskManager.Contracts.Dtos;
using TaskManager.Entity;
using TaskManager.EntityFramework;
using TaskManager.EntityFramework.Repository;

namespace TaskManager.Controllers
{
    public class CheryRecurringJobInputPageController<T,OUTPUT> : RecurringJobBaseController where T  : BaseEntity ,new()
    {
        protected readonly IRepository<T> _repository;
        public CheryRecurringJobInputPageController(HttpClient httpClient, JobDbContext jobDbContext, LogController log, IRepository<T> repository) : base(httpClient, jobDbContext, log)
        {
            _repository = repository;
        }

        protected override async Task DoExecutingAsync(string url, string path, string takName, string client)
        {
            Url = url;
            Path = path;
            TaskName = takName;
            Client = client;
            await SyncTaskSubTable(TaskName,Client);

        }
        private async Task<QRReturnInfo> PostPageAsync(PagedRequest<T> t)
        {
            try
            {
                var inputjson = JsonSerializer.Serialize(t,
                   new JsonSerializerOptions
                   {
                       PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
                       WriteIndented = true // 可选，用于格式化输出
                   }
                   );
                inputjson = RemoveWhitespace(inputjson);
                var content = await Post(Url, Path, inputjson);
                if (!string.IsNullOrEmpty(content))
                {

                    var options = new JsonSerializerOptions
                    {
                        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
                        Converters = {
                         new JsonStringEnumConverter(), // 枚举转换
                         new CustomDateTimeConverter("yyyy-MM-dd HH:mm:ss") // 日期转换
    }
                    };
                    return JsonSerializer.Deserialize<QRReturnInfo>(content, options);
                }
                else
                {
                    await _logger.AddError($"调用接口无返回值{Url}", TaskName);
                    return null;
                }
            }
            catch (Exception ex)
            {
                await _logger.AddError($"调用接口无返回值错误{ex.Message}", TaskName);
                return null;
            }

        }


        public static string GenerateRandomStringWith8EG()
        {
            const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
            var random = new Random();
            var sb = new StringBuilder(32);

            // 随机生成 "8EG" 的插入位置 (0-29)
            int position = random.Next(0, 30);

            // 生成前半部分随机字符串
            for (int i = 0; i < position; i++)
            {
                sb.Append(chars[random.Next(chars.Length)]);
            }

            // 插入 "8EG"
            sb.Append("8EG");

            // 生成后半部分随机字符串，补足32位
            int remainingLength = 32 - sb.Length;
            for (int i = 0; i < remainingLength; i++)
            {
                sb.Append(chars[random.Next(chars.Length)]);
            }

            return sb.ToString();
        }


        private async Task SyncTaskSubTable(string taskName, string client)
        {

            if (string.IsNullOrEmpty(taskName) || string.IsNullOrEmpty(client))
            {
                await _logger.AddError("任务名称或客户端不能为空",taskName);
                return;
            }

            var sublist = _jobDbContext.TaskSub.Where(p => p.TaskName == taskName && p.WriteState == false && p.Subscriber == client).ToList();
            int pageSize = 1000;
            if (!sublist.Any())
            {
                foreach (var sub in sublist)
                {
                    string querystr = $"select * from {sub.TableName} where TaskId='{sub.TaskId}' and WriteState=0 order by uid";//任务表

                    var entites = _jobDbContext.Database.GetDbConnection().Query<T>(querystr);//明细表
                    if (entites.Any())
                    {
                        var total = entites.Count();
                        int totalPages = (int)Math.Ceiling((double)total / pageSize);
                
                        for (int i = 1; i <= totalPages; i++)
                        {

                            var records = entites.Skip((i - 1) * pageSize)
                    .Take(pageSize).ToList();

                            PagedRequest<T> pagedRequest = new PagedRequest<T>()
                            {
                                batchNo = GenerateRandomStringWith8EG(),
                                total = entites.Count(),
                                pageSize = pageSize,
                                list = records,
                                pageNum = i
                            };
                            foreach (var itm in records)
                            {
                                itm.WriteState = true;
                            }
                            var result = await PostPageAsync(pagedRequest);
                            if (result.code == "200")
                            {
                                _jobDbContext.BulkUpdate(records);
                                sub.SyncedPageCount = i;

                                if (result.data.totalGet == total)
                                {
                                    sub.WriteState = true;
                                    _jobDbContext.Set<TaskSub>().Update(sub);
                                    _jobDbContext.SaveChanges();
                                }
                            }                            
                            else
                            {
                                await _logger.AddError($"第 {i} 页数据保存失败，请检查数据。", TaskName);
                            }
                        }

                    }

                }
            }

        }

      
        [HttpGet]
        public async Task<ActionResult<IEnumerable<T>>> GetAll()
        {
            return await _repository.GetAllAsync() as List<T>;
        }

        [HttpGet("{id}")]
        public async Task<ActionResult<T>> GetById(int id)
        {
            var entity = await _repository.GetByIdAsync(id);
            if (entity == null) return NotFound();
            return entity;
        }

        [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!" }); ;
        }

        [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!" });
        }

        [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);
        }

        [HttpGet]
        public async Task<FileStreamResult> Export([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(null, pagingParams);
            return await ExportFile(pagedResult.Data, Guid.NewGuid().ToString() + ".xlsx");


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




        [HttpGet]

        public async Task<IActionResult> GetImportTemplate()
        {
            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）
                var bytes = await importer.GenerateTemplateBytes<T>();


                //using var stream = new MemoryStream(bytes);
                //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 new FileStreamResult(new MemoryStream(bytes), "application/octet-stream") { FileDownloadName = DateTime.Now.ToString("yyyyMMddHHmm") + "_" + fileName };



                //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");
            }
        }








    }




}