109 lines
3.8 KiB
C#
109 lines
3.8 KiB
C#
namespace CloudGaming.Core.Files;
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public static class FileManagerContextExtensions
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{
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public static async Task<FileContextInfo> FileUploadAsync(this FileManagerContext context, IFormFile formFile)
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{
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var fileContextInfo = new FileContextInfo();
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try
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{
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if (formFile == null)
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{
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fileContextInfo.State = FileContextStates.NoneFile;
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fileContextInfo.Exception = new Exception("文件不能为空!");
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return fileContextInfo;
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}
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fileContextInfo.OldName = formFile.FileName;
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var fileExt = Path.GetExtension(formFile.FileName);
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if (!context.FileExtensions.Contains(fileExt.ToLower()))
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{
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fileContextInfo.State = FileContextStates.NoneExtensions;
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fileContextInfo.Exception = new Exception("不支持上传的文件格式!");
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return fileContextInfo;
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}
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if (formFile.Length > context.MaxFileSizeLimit)
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{
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fileContextInfo.State = FileContextStates.MaxLimit;
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fileContextInfo.Exception = new Exception("上传文件长度超限!");
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return fileContextInfo;
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}
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var hash = SHA1.Create();
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var hashBytes = await hash.ComputeHashAsync(formFile.OpenReadStream());
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var saveName = BitConverter.ToString(hashBytes).Replace("-", "") + fileExt;
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var fullPath = context.FileDir + saveName;
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FileInfo fileInfo = new FileInfo(fullPath);
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if (!fileInfo.Exists)
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{
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using (FileStream fs = File.Create(fullPath))
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{
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await formFile.CopyToAsync(fs);
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fs.Flush();
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}
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fileContextInfo.State = FileContextStates.Ok;
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}
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else
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{
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fileContextInfo.State = FileContextStates.FileExists;
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}
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fileContextInfo.FileName = saveName;
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fileContextInfo.FullName = fullPath;
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fileContextInfo.FileRoot = context.ServerUrl + saveName;
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}
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catch (Exception ex)
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{
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fileContextInfo.State = FileContextStates.ErrorException;
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fileContextInfo.Exception = ex;
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throw fileContextInfo.Exception;
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}
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return fileContextInfo;
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}
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public static async Task<FileContextInfo> Success(this Task<FileContextInfo> contextInfo, Action<FileContextInfo> actionInfo)
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{
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var fileContextInfo = await contextInfo;
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if (fileContextInfo.State == FileContextStates.Ok)
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{
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actionInfo(fileContextInfo);
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}
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return fileContextInfo;
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}
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public static async Task<FileContextInfo> Exists(this Task<FileContextInfo> contextInfo, Action<FileContextInfo> actionInfo)
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{
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var fileContextInfo = await contextInfo;
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if (fileContextInfo.State == FileContextStates.FileExists)
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{
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actionInfo(fileContextInfo);
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}
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return fileContextInfo;
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}
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public static async Task<FileContextInfo> Error(this Task<FileContextInfo> contextInfo, Action<FileContextInfo> actionInfo)
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{
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var fileContextInfo = new FileContextInfo();
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try
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{
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fileContextInfo = await contextInfo;
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}
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catch (Exception ex)
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{
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fileContextInfo.State = FileContextStates.ErrorException;
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fileContextInfo.Exception = ex;
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actionInfo(fileContextInfo);
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return fileContextInfo;
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}
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if (fileContextInfo.State != FileContextStates.Ok && fileContextInfo.State != FileContextStates.FileExists)
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{
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actionInfo(fileContextInfo);
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}
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return fileContextInfo;
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}
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} |