using Hh.Mes.Common.log;
using Hh.Mes.Common.Request;
using Hh.Mes.POJO.Entity;
using Hh.Mes.POJO.Response;
using Hh.Mes.Service.Repository;
using SqlSugar;
using System;
using System.Linq;
using System.Linq.Expressions;
using System.Data;
using System.IO;
using Hh.Mes.Pojo.System;
using System.Collections.Generic;
using Microsoft.AspNetCore.Http;
using Hh.Mes.Service.SystemAuth;

namespace Hh.Mes.Service.Base
{
    public class SysFileService : RepositorySqlSugar<sys_File>
    {
        public SysFileService(IAuth auth) : base(auth) { }

        /// <summary>
        /// 文件存储路径  new JoinQueryInfos(JoinType.Left, file.targetId == y.code)
        /// </summary>
        private readonly string FileNamePath = "\\wwwroot\\Document";

        #region 列表、树结构数据
        public dynamic Load(PageReq pageReq, sys_File entity)
        {
            return ExceptionsHelp.Instance.ExecuteT(() =>
            {
                var result = new Response();
                var expression = LinqWhere(entity);
                //先组合查询表达式
                var query = Context.Queryable<sys_File, base_equipment>((x, y) => new JoinQueryInfos(JoinType.Inner, x.targetId == y.equipmentCode))
                                   .Where(expression)
                                   .Select((x, y) => new
                                   {
                                       x.fileName,
                                       x.id,
                                       x.targetId,
                                       x.host,

                                       x.url,
                                       x.size,
                                       x.suffix,
                                       x.remark,

                                       x.createBy,
                                       x.createTime
                                   });
                if (!entity.isSelectEquipment)
                {
                   var expressions=LinqAnotherWhere(entity);
                   query = Context.Queryable<sys_File>()
                                   .Where(expressions)
                                   .Select(x => new
                                   {
                                       x.fileName,
                                       x.id,
                                       x.targetId,
                                       x.host,

                                       x.url,
                                       x.size,
                                       x.suffix,
                                       x.remark,

                                       x.createBy,
                                       x.createTime
                                   });
                }

                //Exel为ture就不分页，因为导出的话是全部导出
                if (pageReq != null)
                {
                    int total = 0;
                    var list = query.ToOffsetPage(pageReq.page, pageReq.limit, ref total).Distinct();
                    result.Result = list;
                    result.Count = total;
                }
                else
                {
                    result.Result = query.ToList().Distinct();
                    result.Count = result.Result.Count;
                }
                return result;
            }, catchRetrunValue: "list");
        }

        public Expression<Func<sys_File, base_equipment, bool>> LinqWhere(sys_File model)
        {
            try
            {
                var exp = Expressionable.Create<sys_File, base_equipment>();
                //数据过滤条件
                //根节点
                if (!string.IsNullOrWhiteSpace(model.targetTableName) && model.targetTableName != "root")
                {
                    exp.And((x, y) => x.targetTableName.Contains(model.targetTableName));
                }
                if (!string.IsNullOrWhiteSpace(model.fileCode))
                {
                    exp.And((x, y) => x.fileCode.Contains(model.fileCode));
                }
                if (!string.IsNullOrWhiteSpace(model.host))
                {
                    exp.And((x, y) => x.host.Contains(model.host));
                }
                //根节点
                if (!string.IsNullOrEmpty(model.targetId) && model.targetId != "r-1")
                {
                    exp.And((x, y) => x.targetId.Equals(model.targetId));
                }
                if (!string.IsNullOrWhiteSpace(model.fileName))
                {
                    exp.And((x, y) => x.fileName.Contains(model.fileName));
                }
                //读取当前用户下面所有的设备
                string currentUser = sysWebUser.Account;
                if (currentUser != SystemVariable.DefaultCreated)
                {
                    var projectRoleKeys = GetProjectRoleKeys(currentUser);
                    exp.And((x, y) => SqlFunc.Subqueryable<sys_role_projects_rel>().Where(c => projectRoleKeys.Contains(c.project_roles_key) && c.project_key == y.projectKeys).Any());
                }
                return exp.ToExpression();//拼接表达式
            }
            catch (Exception ex)
            {
                throw new Exception($"{ex.Message}");
            }
        }

        public Expression<Func<sys_File, bool>> LinqAnotherWhere(sys_File model)
        {
            try
            {
                var exp = Expressionable.Create<sys_File>();
                //数据过滤条件
                //根节点
                if (!string.IsNullOrWhiteSpace(model.targetTableName) && model.targetTableName != "root")
                {
                    exp.And(x => x.targetTableName.Contains(model.targetTableName));
                }
                //根节点
                if (!string.IsNullOrEmpty(model.targetId) && model.targetId != "r-1")
                {
                    exp.And(x => x.targetId.Equals(model.targetId));
                }
                return exp.ToExpression();//拼接表达式
            }
            catch (Exception ex)
            {
                throw new Exception($"{ex.Message}");
            }
        }


        /// <summary>
        /// /左侧列表 设备类型+设备
        /// </summary>
        public dynamic GetTreeList()
        {
            return ExceptionsHelp.Instance.ExecuteT(() =>
            {
                string user = sysWebUser.Account;
                var equipmentNodes = Context.Queryable<base_equipment>().Where(GetTreeListExpression(user)).Select(x => new
                {
                    id = "eq-" + x.id.ToString(),
                    name = x.equipmentName + " " + x.equipmentCode,
                    keys = x.equipmentCode,
                    parentId = x.equipmentTypeCode,
                    isok = true,
                    code = "eq",
                    projectKeys = x.projectKeys
                }).Distinct().ToList();

                var equipmentTypeCodes = equipmentNodes.Select(x => x.parentId).Distinct().ToList();

                var rootNode = new
                {
                    id = Guid.NewGuid(),
                    name = "根节点",
                    keys = "r-1",
                    parentId = "0",
                    isok = false,
                    code = "root",
                    projectKeys = Guid.Empty
                };

                var equipmentTypeNodes = Context.Queryable<base_equipment_type>()
                .Where(x => equipmentTypeCodes.Contains(x.code))
                .Select(x => new
                {
                    id = "eqType-" + x.id.ToString(),
                    name = x.name,
                    keys = x.code,
                    parentId = rootNode.keys,
                    isok = true,
                    code = "eqType",
                    projectKeys = Guid.Empty
                }).ToList();

                var nodes = new List<dynamic>
                {
                    rootNode
                };
                nodes.AddRange(equipmentTypeNodes);
                nodes.AddRange(equipmentNodes);
                return nodes;
            });
        }

        public Expression<Func<base_equipment, bool>> GetTreeListExpression(string userAccount)
        {
            var exp = Expressionable.Create<base_equipment>();
            var ignoreEquipmentTypeCodes = SystemVariable.IotNotContainDevice.Split(',');
            exp.And(x => !ignoreEquipmentTypeCodes.Contains(x.equipmentTypeCode));

            if (userAccount != SystemVariable.DefaultCreated)
            {
                var projectRoleKeys = GetProjectRoleKeys(userAccount);
                exp.And(x => SqlFunc.Subqueryable<sys_role_projects_rel>().Where(c => projectRoleKeys.Contains(c.project_roles_key) && c.project_key == x.projectKeys).Any());
            }
            return exp.ToExpression();
        }

        #endregion


        public dynamic DelByIds(int[] ids)
        {
            return ExceptionsHelp.Instance.ExecuteT(() =>
            {
                var response = new Response();
                var docs = Context.Queryable<sys_File>().Where(x => ids.Contains(x.id)).ToList();
                docs.ForEach((item) =>
                {
                    DeleteDocument(item.url);
                });
                Context.Deleteable<sys_File>(t => ids.Contains(t.id)).ExecuteCommand();
                return response;
            });
        }

        /// <summary>
        /// 删除服务器内文件
        /// </summary>
        /// <param name="fileName"></param>
        public void DeleteDocument(string fileName)
        {
            string path = $"{Directory.GetCurrentDirectory()}{FileNamePath}\\{fileName}";
            if (File.Exists(path))
            {
                File.Delete(path);
            }
        }

        #region 文件上传新增 
        /// <summary>
        /// 文件上传新增 需要在外面指定targetTableName
        /// </summary>
        public dynamic AddOrUpdate(sys_File entity)
        {
            return ExceptionsHelp.Instance.ExecuteT<dynamic>(() =>
            {
                var response = new Response();
                string fileEmptyErrorMessage = "上传文件数据时，文件不能为空！";
                if (!ValidateInitialConditions(entity, response, fileEmptyErrorMessage))
                    return response;

                // 获取目标表名并检查有效性
                entity.targetTableName = GetTargetTableName(entity.targetTableName);

                var uploadPath = EnsureUploadDirectory();

                foreach (var file in entity.excelfile)
                {
                    if (!ValidateFile(file, response, fileEmptyErrorMessage))
                    {
                        return response;
                    }

                    var (newFileName, size) = SaveFile(file, uploadPath);
                    UpdateEntity(entity, newFileName, size);
                    Context.Insertable(entity).AddQueue();
                }
                var result = Context.SaveQueuesAsync().Result > 0;
                if (!result) return response.ResponseError("文件上传保存失败,请刷新后重试,反复出现请联系管理员!");
                return response;
            });
        }

        // 验证初始条件，确保文件列表和targetId有效
        private bool ValidateInitialConditions(sys_File entity, Response response, string errorMessage)
        {
            if (entity.excelfile == null || entity.excelfile.Count == 0)
            {
                response.ResponseError(errorMessage);
                return false;
            }

            if (string.IsNullOrEmpty(entity.targetId))
            {
                response.ResponseError("上传文件,目标targetId不能为空！");
                return false;
            }
            return true;
        }

        private bool ValidateFile(IFormFile file, Response response, string errorMessage)
        {
            if (file == null || file.Length == 0)
            {
                response.ResponseError(errorMessage);
                return false;
            }

            var fileTypes = new List<string>
            {
                ".exe",
                ".bat"
            };

            foreach (var item in fileTypes)
            {
                if (file.FileName.EndsWith(item, StringComparison.OrdinalIgnoreCase))
                {
                    response.ResponseError($"禁止上传“{item}”文件");
                    return false;
                }
            }

            return true;
        }

        // 获取目标表名，
        private string GetTargetTableName(string targetTableName)
        {
            return targetTableName switch
            {
                "eqType" => "base_equipment_type",
                "eq" => "base_equipment",
                _ => targetTableName
            };
        }

        // 确保上传目录存在
        private string EnsureUploadDirectory()
        {
            var uploadPath = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot", "Document");
            if (!Directory.Exists(uploadPath))
            {
                Directory.CreateDirectory(uploadPath);
            }
            return uploadPath;
        }

        // 保存文件并返回新文件名和文件大小
        private (string newFileName, long size) SaveFile(IFormFile file, string uploadPath)
        {
            var suffix = Path.GetExtension(file.FileName);
            var fileName = Path.GetFileNameWithoutExtension(file.FileName);
            var newFileName = $"{fileName}_{DateTime.Now:yyyy-MM-dd-HH-mm-ss}{suffix}";

            long size;
            using (var fs = File.Create(Path.Combine(uploadPath, newFileName)))
            {
                file.CopyTo(fs);
                size = fs.Length / 1024; // 以 KB 为单位
            }
            return (newFileName, size);
        }

        // 更新实体的文件信息
        private void UpdateEntity(sys_File entity, string newFileName, long size)
        {
            entity.size = size > 1024 ? $"{size / 1024:N1}M" : $"{size:N1}Kb";
            entity.suffix = Path.GetExtension(newFileName);
            entity.fileName = Path.GetFileNameWithoutExtension(newFileName);
            entity.url = newFileName;
            entity.createBy = sysWebUser.Account;
            entity.createTime = DateTime.Now;
        }
        #endregion
    }
}