using Hopetry.Models;
using Hopetry.Provider;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Hopetry.Services
{
    public class FileUploadService
    {
        //private static readonly SqlSugarScope _db = SqlSugarConfig.GetSqlSugarScope();
        //private static readonly SqlSugarClient _db = SqlSugarConfig.GetSqlSugarScope();
        private static readonly object _dbLock = new object();
        //private readonly SqlSugarClient _db;

        public FileUploadService()
        {
            //_db = SqlSugarConfig.GetSqlSugarScope();
        }

        // 查询所有文件信息 - 带分页优化
        public List<FUpload> GetAllFiles(int pageNumber = 1, int pageSize = 50)
        {
            using var db = SqlSugarConfig.GetSqlSugarScope();
            return db.Queryable<FUpload>()
                .OrderByDescending(f => f.CreateTime) // 按创建时间倒序排列
                .ToPageList(pageNumber, pageSize);
        }

        // 查询未完成的上传文件
        public List<FUpload> GetIncompleteFiles(int pageNumber = 1, int pageSize = 50)
        {
            using var db = SqlSugarConfig.GetSqlSugarScope();
            return db.Queryable<FUpload>()
                .Where(f => f.IsComplete == false)
                .OrderByDescending(f => f.CreateTime)
                .ToPageList(pageNumber, pageSize);
        }

        // 查询已完成的上传文件
        public List<FUpload> GetCompleteFiles(int pageNumber = 1, int pageSize = 50)
        {
            using var db = SqlSugarConfig.GetSqlSugarScope();
            return db.Queryable<FUpload>()
                .Where(f => f.IsComplete == true)
                .OrderByDescending(f => f.CompleteTime)
                .ToPageList(pageNumber, pageSize);
        }

        // 获取文件总数
        public int GetTotalFileCount()
        {
            using var db = SqlSugarConfig.GetSqlSugarScope();
            return db.Queryable<FUpload>().Count();
        }

        // 获取未完成文件数
        public int GetIncompleteFileCount()
        {
            using var db = SqlSugarConfig.GetSqlSugarScope();
            return db.Queryable<FUpload>().Where(f => f.IsComplete == false).Count();
        }

        // 获取已完成文件数
        public int GetCompleteFileCount()
        {
            using var db = SqlSugarConfig.GetSqlSugarScope();
            return db.Queryable<FUpload>().Where(f => f.IsComplete == true).Count();
        }

        // 示例：添加文件信息
        public bool AddFile(FUpload file)
        {
            using var db = SqlSugarConfig.GetSqlSugarScope();
            return db.Insertable(file).ExecuteCommand() > 0;
        }

        // 示例：更新文件信息
        public bool UpdateFile(FUpload file)
        {
            using var db = SqlSugarConfig.GetSqlSugarScope();
            return db.Updateable(file).ExecuteCommand() > 0;
        }

        // 示例：更新文件信息(上传完成更新)
        public async Task<bool> UpdateFileCompleteAsync(string id, bool flag)
        {
            using var db = SqlSugarConfig.GetSqlSugarScope();
            var result = db.Updateable<FUpload>()
                .SetColumns(r => new FUpload { IsComplete = flag, CompleteTime = DateTime.Now })
                .Where(r => r.Id == id)
                .ExecuteCommand();

            //Console.WriteLine($"数据库更新结果: {result}, ID: {id}, Flag: {flag}");
            return result > 0;
        }

        // 同步版本保持兼容性
        public bool UpdateFileComplete(string id, bool flag)
        {
            return UpdateFileCompleteAsync(id, flag).GetAwaiter().GetResult();
        }

        // 批量更新文件状态
        public async Task UpdateMultipleFilesStatusAsync(List<(string id, bool status)> updates)
        {
            await Task.Run(() =>
            {
                using var db = SqlSugarConfig.GetSqlSugarScope();
                foreach (var (id, status) in updates)
                {
                    var result = db.Updateable<FUpload>()
                        .SetColumns(r => new FUpload { IsComplete = status, CompleteTime = DateTime.Now })
                        .Where(r => r.Id == id)
                        .ExecuteCommand();

                    Console.WriteLine($"批量更新结果: {result}, ID: {id}, Status: {status}");
                }
            });
        }

        // 示例：删除文件信息
        public bool DeleteFile(string id)
        {
            using var db = SqlSugarConfig.GetSqlSugarScope();
            return db.Deleteable<FUpload>().Where(f => f.Id == id).ExecuteCommand() > 0;
        }

        // 示例：删除文件信息
        public bool DeleteFiles(List<string> ids)
        {
            using var db = SqlSugarConfig.GetSqlSugarScope();
            var aa = db.Deleteable<FUpload>().Where(f => ids.Contains(f.Id)).ExecuteCommand();
            return aa > 0;
        }

        // 检查数据库是否存在，不存在则创建
        public void InitDatabase()
        {
            using var db = SqlSugarConfig.GetSqlSugarScope();
            db.DbMaintenance.CreateDatabase(); // SQLite不需要创建数据库，但可以用于检查

            // 如果表不存在则创建
            if (!db.DbMaintenance.IsAnyTable("f_upload", false))
            {
                db.CodeFirst.InitTables(typeof(FUpload));
            }
        }
    }
}