using dy.net.dto;
using dy.net.service;
using dy.net.utils;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Newtonsoft.Json;
using System.Drawing.Printing;

namespace dy.net.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class VideoController : ControllerBase
    {
        private readonly DyCollectVideoService dyCollectVideoService;

        public VideoController(DyCollectVideoService dyCollectVideoService)
        {
            this.dyCollectVideoService = dyCollectVideoService;
        }
        /// <summary>
        /// 分页查询收藏视频
        /// </summary>
        /// <param name="dto"></param>
        [HttpPost("paged")]
        public async Task<IActionResult> GetPagedAsync(VideoPageRequestDTO dto)
        {
            // 调试日志：输出接收到的排序参数
            Console.WriteLine($"排序参数 - SortField: {dto.SortField}, SortOrder: {dto.SortOrder}");
            
            var (list, totalCount) = await dyCollectVideoService.GetPagedAsync(dto.PageIndex, dto.PageSize, dto.Tag, dto.Tags, dto.Author, dto.ViedoType, dto.Dates, dto.IsDeleted, dto.SortField, dto.SortOrder);
            return Ok(new
            {
                code = 0,
                data = new
                {
                    data = list,
                    total=totalCount,
                    pageIndex=dto.PageIndex,
                    pageSize=dto.PageSize
                }
            });
        }
        
        /// <summary>
        /// 获取所有视频类型列表（用于下拉框）
        /// </summary>
        /// <returns></returns>
        [HttpGet("categories")]
        public async Task<IActionResult> GetAllCategories()
        {
            var categories = await dyCollectVideoService.GetAllCategoriesAsync();
            return Ok(new
            {
                code = 0,
                data = categories
            });
        }

        /// <summary>
        /// 查询统计数据
        /// </summary>
        /// <returns></returns>
        [HttpGet("statics")]
        public async Task<IActionResult> GetStaticsAsync()
        {
            var data = await dyCollectVideoService.GetStatics();
            return Ok(new
            {
                code = 0,
                data
            });
        }

        /// <summary>
        /// 清理数据库中文件不存在的视频记录
        /// </summary>
        /// <returns></returns>
        [Authorize]
        [HttpPost("cleanup")]
        public async Task<IActionResult> CleanupMissingFilesAsync()
        {
            try
            {
                Serilog.Log.Information("开始清理文件不存在的视频记录");
                var deletedCount = await dyCollectVideoService.CleanupMissingFilesAsync();
                Serilog.Log.Information($"清理完成，删除了 {deletedCount} 条记录");
                return Ok(new
                {
                    code = 0,
                    data = new
                    {
                        deletedCount = deletedCount,
                        message = $"清理完成，删除了 {deletedCount} 条文件不存在的记录"
                    }
                });
            }
            catch (Exception ex)
            {
                Serilog.Log.Error(ex, "清理文件不存在的记录失败");
                return StatusCode(500, new { code = -1, error = "清理失败：" + ex.Message });
            }
        }

        /// <summary>
        /// 删除指定作者的所有视频数据
        /// </summary>
        /// <param name="authorName">作者名称</param>
        /// <returns></returns>
        [Authorize]
        [HttpPost("delete-author")]
        public async Task<IActionResult> DeleteAuthorVideosAsync([FromBody] DeleteAuthorRequest request)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(request?.AuthorName))
                {
                    return BadRequest(new { code = -1, error = "作者名称不能为空" });
                }

                Serilog.Log.Information($"开始删除作者 {request.AuthorName} 的视频数据");
                var deletedCount = await dyCollectVideoService.DeleteAuthorVideosAsync(request.AuthorName);
                Serilog.Log.Information($"删除完成，删除了 {deletedCount} 条记录");
                
                return Ok(new
                {
                    code = 0,
                    data = new
                    {
                        deletedCount = deletedCount,
                        message = $"已删除作者 {request.AuthorName} 的 {deletedCount} 条视频记录"
                    }
                });
            }
            catch (Exception ex)
            {
                Serilog.Log.Error(ex, $"删除作者视频失败: {request?.AuthorName}");
                return StatusCode(500, new { code = -1, error = "删除失败：" + ex.Message });
            }
        }

        /// <summary>
        /// 删除作者请求DTO
        /// </summary>
        public class DeleteAuthorRequest
        {
            public string AuthorName { get; set; }
        }


        /// <summary>
        /// 获取视频流（支持Range请求，用于视频播放）
        /// </summary>
        /// <param name="id">视频ID</param>
        /// <returns></returns>
        [Authorize]
        [HttpGet("stream/{id}")]
        public async Task<IActionResult> GetVideoStream(string id)
        {
            try
            {
                var video = await dyCollectVideoService.GetByIdAsync(id);
                if (video == null || string.IsNullOrWhiteSpace(video.VideoSavePath))
                {
                    return NotFound(new { code = -1, error = "视频不存在" });
                }

                if (!System.IO.File.Exists(video.VideoSavePath))
                {
                    return NotFound(new { code = -1, error = "视频文件不存在" });
                }

                var fileInfo = new FileInfo(video.VideoSavePath);
                var contentType = GetContentType(video.VideoSavePath);
                
                // 记录日志，便于调试
                var rangeHeader = Request.Headers["Range"].ToString();
                Serilog.Log.Debug($"视频流请求: ID={id}, 路径={video.VideoSavePath}, Content-Type={contentType}, Range={rangeHeader}");
                
                var fileStream = new FileStream(video.VideoSavePath, FileMode.Open, FileAccess.Read, FileShare.Read);

                // 使用ASP.NET Core内置的Range支持
                Response.Headers.Add("Accept-Ranges", "bytes");
                
                // 添加缓存控制头，确保浏览器可以缓存视频元数据
                // 但允许 Range 请求，这样浏览器可以快速开始播放
                Response.Headers.Add("Cache-Control", "public, max-age=3600");
                
                // 添加 CORS 头（如果需要）
                Response.Headers.Add("Access-Control-Allow-Origin", "*");
                Response.Headers.Add("Access-Control-Allow-Methods", "GET, HEAD, OPTIONS");
                Response.Headers.Add("Access-Control-Allow-Headers", "Range");
                Response.Headers.Add("Access-Control-Expose-Headers", "Content-Range, Accept-Ranges, Content-Length");
                
                return File(fileStream, contentType, enableRangeProcessing: true);
            }
            catch (Exception ex)
            {
                Serilog.Log.Error(ex, $"获取视频流失败: {id}");
                return StatusCode(500, new { code = -1, error = "获取视频流失败" });
            }
        }

        /// <summary>
        /// 获取视频封面图片
        /// </summary>
        /// <param name="id">视频ID</param>
        /// <returns></returns>
        [Authorize]
        [HttpGet("cover/{id}")]
        public async Task<IActionResult> GetVideoCover(string id)
        {
            try
            {
                var video = await dyCollectVideoService.GetByIdAsync(id);
                if (video == null)
                {
                    return GetDefaultCoverImage();
                }

                // 优先使用本地保存的封面
                if (!string.IsNullOrWhiteSpace(video.VideoCoverSavePath) && System.IO.File.Exists(video.VideoCoverSavePath))
                {
                    var fileInfo = new FileInfo(video.VideoCoverSavePath);
                    var contentType = GetImageContentType(video.VideoCoverSavePath);
                    var fileStream = System.IO.File.OpenRead(video.VideoCoverSavePath);
                    return File(fileStream, contentType);
                }

                // 如果没有本地封面，返回默认图片
                return GetDefaultCoverImage();
            }
            catch (Exception ex)
            {
                Serilog.Log.Error(ex, $"获取视频封面失败: {id}");
                return GetDefaultCoverImage();
            }
        }

        /// <summary>
        /// 返回默认封面图片（SVG 占位图）
        /// </summary>
        private IActionResult GetDefaultCoverImage()
        {
            var svgContent = @"<svg width=""400"" height=""225"" xmlns=""http://www.w3.org/2000/svg"">
  <rect width=""400"" height=""225"" fill=""#f0f0f0""/>
  <text x=""50%"" y=""50%"" font-family=""Arial, sans-serif"" font-size=""16"" fill=""#999"" text-anchor=""middle"" dy="".3em"">暂无封面</text>
</svg>";
            var svgBytes = System.Text.Encoding.UTF8.GetBytes(svgContent);
            return File(svgBytes, "image/svg+xml");
        }

        /// <summary>
        /// 根据文件扩展名获取图片 Content-Type
        /// </summary>
        private string GetImageContentType(string fileName)
        {
            if (string.IsNullOrWhiteSpace(fileName))
            {
                return "image/jpeg";
            }

            var extension = Path.GetExtension(fileName).ToLowerInvariant();
            return extension switch
            {
                ".jpg" or ".jpeg" => "image/jpeg",
                ".png" => "image/png",
                ".gif" => "image/gif",
                ".webp" => "image/webp",
                ".svg" => "image/svg+xml",
                ".bmp" => "image/bmp",
                _ => "image/jpeg"
            };
        }


        /// <summary>
        /// 根据文件扩展名获取Content-Type
        /// </summary>
        private string GetContentType(string fileName)
        {
            if (string.IsNullOrWhiteSpace(fileName))
            {
                Serilog.Log.Warning($"文件名为空，使用默认 video/mp4");
                return "video/mp4"; // 抖音视频默认是 MP4
            }

            var extension = Path.GetExtension(fileName).ToLowerInvariant();
            
            // 如果没有扩展名，尝试从文件名推断（抖音视频格式通常是 mp4）
            if (string.IsNullOrEmpty(extension))
            {
                Serilog.Log.Warning($"文件 {fileName} 没有扩展名，使用默认 video/mp4");
                return "video/mp4";
            }

            var contentType = extension switch
            {
                ".mp4" => "video/mp4",
                ".webm" => "video/webm",
                ".ogg" => "video/ogg",
                ".mov" => "video/quicktime",
                ".avi" => "video/x-msvideo",
                ".mkv" => "video/x-matroska",
                ".flv" => "video/x-flv",
                ".wmv" => "video/x-ms-wmv",
                ".3gp" => "video/3gpp",
                ".m3u8" => "application/x-mpegURL", // HLS 流
                _ => null
            };

            // 如果无法识别扩展名，默认使用 video/mp4（抖音视频通常是 MP4）
            if (contentType == null)
            {
                Serilog.Log.Warning($"无法识别的视频扩展名: {extension}，文件: {fileName}，使用默认 video/mp4");
                return "video/mp4";
            }

            return contentType;
        }

        [AllowAnonymous]
        [HttpGet]
        public IActionResult Index()
        {
            List<MyClass> myClasses = new List<MyClass>();
            foreach (var drive in DriveInfo.GetDrives())
            {
                myClasses.Add(new MyClass { name=drive.Name, x1= drive.TotalSize, x2= drive.TotalFreeSpace });
                Serilog.Log.Debug($"Drive: {drive.Name}, Total Size: {drive.TotalSize}, Free Space: {drive.TotalFreeSpace}");
            }
            //var disk=DiskInfoHelper.GetDockerHostTotalDiskSpaceGB();
            return Ok(JsonConvert.SerializeObject(myClasses)+"\r\n"+JsonConvert.SerializeObject(myClasses.Sum(x=>x.x1)+"\r\n"+ JsonConvert.SerializeObject(myClasses.Sum(x => x.x2))));
        }


        public class MyClass
        {
            public string name { get; set; }

            public long x1 { get; set; }

            public long x2 { get; set; }
        }
    }
}