| | | 1 | | using Dropbox.Api.Files; |
| | | 2 | | using Dropbox.Api; |
| | | 3 | | using Newtonsoft.Json; |
| | | 4 | | using System.IO; |
| | | 5 | | |
| | | 6 | | |
| | | 7 | | namespace Services.ApiServices.DropBoxApi |
| | | 8 | | { |
| | | 9 | | public class DropboxApiClient |
| | | 10 | | { |
| | | 11 | | private static readonly HttpClient _tokenClient = new(new SocketsHttpHandler |
| | | 12 | | { |
| | | 13 | | PooledConnectionLifetime = TimeSpan.FromMinutes(5) |
| | | 14 | | }); |
| | | 15 | | |
| | | 16 | | private string _accessToken = null!; |
| | | 17 | | private readonly string _refreshToken; |
| | | 18 | | private readonly string _appKey; |
| | | 19 | | private readonly string _appSecret; |
| | | 20 | | |
| | | 21 | | public DropboxApiClient(string refreshToken, string appKey, string appSecret) |
| | | 22 | | { |
| | | 23 | | _refreshToken = refreshToken; |
| | | 24 | | _appKey = appKey; |
| | | 25 | | _appSecret = appSecret; |
| | | 26 | | } |
| | | 27 | | |
| | | 28 | | private async Task<string> RefreshAccessTokenAsync() |
| | | 29 | | { |
| | | 30 | | var client = _tokenClient; |
| | | 31 | | var requestContent = new FormUrlEncodedContent(new[] |
| | | 32 | | { |
| | | 33 | | new KeyValuePair<string, string>("grant_type", "refresh_token"), |
| | | 34 | | new KeyValuePair<string, string>("refresh_token", _refreshToken), |
| | | 35 | | new KeyValuePair<string, string>("client_id", _appKey), |
| | | 36 | | new KeyValuePair<string, string>("client_secret", _appSecret) |
| | | 37 | | }); |
| | | 38 | | |
| | | 39 | | var response = await client.PostAsync("https://api.dropbox.com/oauth2/token", requestContent); |
| | | 40 | | response.EnsureSuccessStatusCode(); |
| | | 41 | | |
| | | 42 | | var responseContent = await response.Content.ReadAsStringAsync(); |
| | | 43 | | var tokenResponse = JsonConvert.DeserializeObject<Dictionary<string, string>>(responseContent); |
| | | 44 | | if (tokenResponse == null || !tokenResponse.TryGetValue("access_token", out var accessToken)) |
| | | 45 | | throw new InvalidOperationException("Dropbox token response missing access_token"); |
| | | 46 | | |
| | | 47 | | _accessToken = accessToken; |
| | | 48 | | return _accessToken; |
| | | 49 | | } |
| | | 50 | | |
| | | 51 | | public async Task<string> GetViewLinkAsync(string filePath, string fileName) |
| | | 52 | | { |
| | | 53 | | await Task.CompletedTask; |
| | | 54 | | var baseSegments = new[] { "Приложения", "Studio2", "Orders" } |
| | | 55 | | .Select(Uri.EscapeDataString); |
| | | 56 | | var pathSegments = filePath.Split('/', StringSplitOptions.RemoveEmptyEntries) |
| | | 57 | | .Select(Uri.EscapeDataString); |
| | | 58 | | var fileSegment = Uri.EscapeDataString(fileName); |
| | | 59 | | var allSegments = baseSegments.Concat(pathSegments).Concat(new[] { fileSegment }); |
| | | 60 | | var encodedPath = string.Join('/', allSegments); |
| | | 61 | | return $"https://www.dropbox.com/home/{encodedPath}"; |
| | | 62 | | } |
| | | 63 | | |
| | | 64 | | public async Task UploadFileAsync(string localFilePath, string dropboxFolderPath, string dropboxFileName) |
| | | 65 | | { |
| | | 66 | | await RefreshAccessTokenAsync(); |
| | | 67 | | |
| | | 68 | | using (var dropboxClient = new DropboxClient(_accessToken)) |
| | | 69 | | { |
| | | 70 | | using (var fileStream = new FileStream(localFilePath, FileMode.Open, FileAccess.Read)) |
| | | 71 | | { |
| | | 72 | | await dropboxClient.Files.UploadAsync( |
| | | 73 | | path: $"{dropboxFolderPath}/{dropboxFileName}", |
| | | 74 | | WriteMode.Overwrite.Instance, |
| | | 75 | | body: fileStream |
| | | 76 | | ); |
| | | 77 | | } |
| | | 78 | | } |
| | | 79 | | } |
| | | 80 | | |
| | | 81 | | /// <summary> |
| | | 82 | | /// Получение ссылки для скачивания файла из Dropbox |
| | | 83 | | /// </summary> |
| | | 84 | | public async Task<string> GetDownloadLinkAsync(string dropboxFolderPath, string fileName) |
| | | 85 | | { |
| | | 86 | | await RefreshAccessTokenAsync(); |
| | | 87 | | |
| | | 88 | | using (var dropboxClient = new DropboxClient(_accessToken)) |
| | | 89 | | { |
| | | 90 | | var fullPath = $"{dropboxFolderPath.TrimEnd('/')}/{fileName}"; |
| | | 91 | | var tempLinkResult = await dropboxClient.Files.GetTemporaryLinkAsync(fullPath); |
| | | 92 | | return tempLinkResult.Link; |
| | | 93 | | } |
| | | 94 | | } |
| | | 95 | | |
| | | 96 | | /// <summary> |
| | | 97 | | /// Возвращает файлы из подпапок указанной папки Dropbox вместе с временными ссылками. |
| | | 98 | | /// </summary> |
| | | 99 | | /// <param name="folderPath">Путь к папке с подпапками.</param> |
| | | 100 | | /// <param name="maxFilesPerFolder"> |
| | | 101 | | /// Максимум файлов на подпапку (по дате изменения, новые сначала). null — без ограничения (все файлы). |
| | | 102 | | /// </param> |
| | | 103 | | /// <param name="filterKnownFileNames"> |
| | | 104 | | /// Необязательный колбэк: получает список имён файлов подпапки, возвращает набор уже известных — |
| | | 105 | | /// для них временная ссылка не запрашивается (экономит дорогие вызовы Dropbox API). |
| | | 106 | | /// </param> |
| | | 107 | | public async Task<Dictionary<string, Dictionary<string, string>>> GetFolderContentsAsync( |
| | | 108 | | string folderPath, |
| | | 109 | | int? maxFilesPerFolder = 10, |
| | | 110 | | Func<IReadOnlyCollection<string>, Task<HashSet<string>>>? filterKnownFileNames = null) |
| | | 111 | | { |
| | | 112 | | var result = new Dictionary<string, Dictionary<string, string>>(); |
| | | 113 | | try |
| | | 114 | | { |
| | | 115 | | await RefreshAccessTokenAsync(); |
| | | 116 | | using (var client = new DropboxClient(_accessToken)) |
| | | 117 | | { |
| | | 118 | | // Получаем список файлов и папок в указанной папке |
| | | 119 | | var list = await client.Files.ListFolderAsync(folderPath); |
| | | 120 | | |
| | | 121 | | // Проходим по всем элементам в папке |
| | | 122 | | foreach (var item in list.Entries.Where(i => i.IsFolder)) |
| | | 123 | | { |
| | | 124 | | var folderName = item.AsFolder.Name; |
| | | 125 | | var folderPathLower = item.AsFolder.PathLower; |
| | | 126 | | |
| | | 127 | | // Получаем список файлов в подпапке (с пагинацией, если лимит не задан — |
| | | 128 | | // иначе часть файлов Dropbox не покажет за один вызов ListFolderAsync) |
| | | 129 | | var folderFiles = await client.Files.ListFolderAsync(folderPathLower); |
| | | 130 | | var entries = folderFiles.Entries.ToList(); |
| | | 131 | | if (maxFilesPerFolder == null) |
| | | 132 | | { |
| | | 133 | | var hasMore = folderFiles.HasMore; |
| | | 134 | | var cursor = folderFiles.Cursor; |
| | | 135 | | while (hasMore) |
| | | 136 | | { |
| | | 137 | | var next = await client.Files.ListFolderContinueAsync(cursor); |
| | | 138 | | entries.AddRange(next.Entries); |
| | | 139 | | hasMore = next.HasMore; |
| | | 140 | | cursor = next.Cursor; |
| | | 141 | | } |
| | | 142 | | } |
| | | 143 | | |
| | | 144 | | // Сортируем файлы по дате изменения (от новых к старым), при заданном лимите — берём верхушку |
| | | 145 | | var candidateFiles = entries |
| | | 146 | | .Where(i => i.IsFile) |
| | | 147 | | .OrderByDescending(f => f.AsFile.ClientModified) // Сначала новые файлы |
| | | 148 | | .ToList(); |
| | | 149 | | if (maxFilesPerFolder.HasValue) |
| | | 150 | | { |
| | | 151 | | candidateFiles = candidateFiles.Take(maxFilesPerFolder.Value).ToList(); |
| | | 152 | | } |
| | | 153 | | |
| | | 154 | | // Отсеиваем уже известные файлы ДО генерации временных ссылок |
| | | 155 | | var known = filterKnownFileNames == null |
| | | 156 | | ? new HashSet<string>() |
| | | 157 | | : await filterKnownFileNames(candidateFiles.Select(f => f.AsFile.Name).ToList()); |
| | | 158 | | |
| | | 159 | | // Создаем словарь для хранения названий файлов и ссылок |
| | | 160 | | var fileLinks = new Dictionary<string, string>(); |
| | | 161 | | foreach (var file in candidateFiles) |
| | | 162 | | { |
| | | 163 | | var fileName = file.AsFile.Name; |
| | | 164 | | if (known.Contains(fileName)) |
| | | 165 | | continue; |
| | | 166 | | |
| | | 167 | | var filePath = file.AsFile.PathLower; |
| | | 168 | | var link = await client.Files.GetTemporaryLinkAsync(filePath); |
| | | 169 | | fileLinks[fileName] = link.Link; |
| | | 170 | | } |
| | | 171 | | |
| | | 172 | | // Добавляем в результат |
| | | 173 | | result[folderName] = fileLinks; |
| | | 174 | | } |
| | | 175 | | } |
| | | 176 | | } |
| | | 177 | | catch (Exception e) |
| | | 178 | | { |
| | | 179 | | Console.WriteLine(e); |
| | | 180 | | } |
| | | 181 | | |
| | | 182 | | return result; |
| | | 183 | | } |
| | | 184 | | |
| | | 185 | | /// <summary> |
| | | 186 | | /// Проверяет существование файла в Dropbox |
| | | 187 | | /// </summary> |
| | | 188 | | public async Task<bool> FileExistsAsync(string dropboxFolderPath, string fileName) |
| | | 189 | | { |
| | | 190 | | try |
| | | 191 | | { |
| | | 192 | | await RefreshAccessTokenAsync(); |
| | | 193 | | using (var client = new DropboxClient(_accessToken)) |
| | | 194 | | { |
| | | 195 | | var fullPath = $"{dropboxFolderPath.TrimEnd('/')}/{fileName}"; |
| | | 196 | | try |
| | | 197 | | { |
| | | 198 | | var metadata = await client.Files.GetMetadataAsync(fullPath); |
| | | 199 | | return metadata != null && metadata.IsFile; |
| | | 200 | | } |
| | | 201 | | catch (Exception ex) |
| | | 202 | | { |
| | | 203 | | // Проверяем, является ли это ошибкой "файл не найден" |
| | | 204 | | // В Dropbox API это обычно HttpException с кодом 409 или 404 |
| | | 205 | | if (ex.Message.Contains("not_found") || |
| | | 206 | | ex.Message.Contains("path") || |
| | | 207 | | ex.Message.Contains("not found") || |
| | | 208 | | ex.GetType().Name.Contains("HttpException")) |
| | | 209 | | { |
| | | 210 | | return false; |
| | | 211 | | } |
| | | 212 | | |
| | | 213 | | // Другие ошибки - считаем что файла нет |
| | | 214 | | return false; |
| | | 215 | | } |
| | | 216 | | } |
| | | 217 | | } |
| | | 218 | | catch |
| | | 219 | | { |
| | | 220 | | return false; |
| | | 221 | | } |
| | | 222 | | } |
| | | 223 | | |
| | | 224 | | /// <summary> |
| | | 225 | | /// Загружает файл из байтов в Dropbox |
| | | 226 | | /// </summary> |
| | | 227 | | public async Task UploadFileFromBytesAsync(byte[] fileBytes, string dropboxFolderPath, string dropboxFileName) |
| | | 228 | | { |
| | | 229 | | await RefreshAccessTokenAsync(); |
| | | 230 | | |
| | | 231 | | using (var dropboxClient = new DropboxClient(_accessToken)) |
| | | 232 | | { |
| | | 233 | | using (var memoryStream = new MemoryStream(fileBytes)) |
| | | 234 | | { |
| | | 235 | | var fullPath = $"{dropboxFolderPath.TrimEnd('/')}/{dropboxFileName}"; |
| | | 236 | | await dropboxClient.Files.UploadAsync( |
| | | 237 | | path: fullPath, |
| | | 238 | | WriteMode.Overwrite.Instance, |
| | | 239 | | body: memoryStream |
| | | 240 | | ); |
| | | 241 | | } |
| | | 242 | | } |
| | | 243 | | } |
| | | 244 | | |
| | | 245 | | /// <summary> |
| | | 246 | | /// Загружает файл из байтов и возвращает ссылку для скачивания |
| | | 247 | | /// </summary> |
| | | 248 | | public async Task<string> UploadFileAndGetLinkAsync(byte[] fileBytes, string dropboxFolderPath, |
| | | 249 | | string dropboxFileName) |
| | | 250 | | { |
| | | 251 | | await UploadFileFromBytesAsync(fileBytes, dropboxFolderPath, dropboxFileName); |
| | | 252 | | return await GetDownloadLinkAsync(dropboxFolderPath, dropboxFileName); |
| | | 253 | | } |
| | | 254 | | |
| | | 255 | | /// <summary> |
| | | 256 | | /// Получает список всех файлов в папке с их метаданными |
| | | 257 | | /// </summary> |
| | | 258 | | public async Task<List<DropboxFileInfo>> GetFilesListAsync(string dropboxFolderPath) |
| | | 259 | | { |
| | | 260 | | var filesList = new List<DropboxFileInfo>(); |
| | | 261 | | try |
| | | 262 | | { |
| | | 263 | | await RefreshAccessTokenAsync(); |
| | | 264 | | using (var client = new DropboxClient(_accessToken)) |
| | | 265 | | { |
| | | 266 | | var list = await client.Files.ListFolderAsync(dropboxFolderPath); |
| | | 267 | | |
| | | 268 | | foreach (var item in list.Entries.Where(i => i.IsFile)) |
| | | 269 | | { |
| | | 270 | | var file = item.AsFile; |
| | | 271 | | filesList.Add(new DropboxFileInfo |
| | | 272 | | { |
| | | 273 | | Name = file.Name, |
| | | 274 | | Path = file.PathLower, |
| | | 275 | | Size = file.Size, |
| | | 276 | | Modified = file.ServerModified |
| | | 277 | | }); |
| | | 278 | | } |
| | | 279 | | } |
| | | 280 | | } |
| | | 281 | | catch (Exception e) |
| | | 282 | | { |
| | | 283 | | Console.WriteLine($"Ошибка при получении списка файлов: {e.Message}"); |
| | | 284 | | } |
| | | 285 | | |
| | | 286 | | return filesList.OrderByDescending(f => f.Modified).ToList(); |
| | | 287 | | } |
| | | 288 | | |
| | | 289 | | /// <summary> |
| | | 290 | | /// Индекс имён PDF в папке (без расширения) — один list_folder вместо N get_metadata. |
| | | 291 | | /// </summary> |
| | | 292 | | public async Task<HashSet<string>> GetPdfShipmentNumberIndexAsync(string dropboxFolderPath) |
| | | 293 | | { |
| | | 294 | | var index = new HashSet<string>(StringComparer.OrdinalIgnoreCase); |
| | | 295 | | try |
| | | 296 | | { |
| | | 297 | | await RefreshAccessTokenAsync(); |
| | | 298 | | using var client = new DropboxClient(_accessToken); |
| | | 299 | | var list = await client.Files.ListFolderAsync(dropboxFolderPath); |
| | | 300 | | AddPdfNamesToIndex(list, index); |
| | | 301 | | while (list.HasMore) |
| | | 302 | | { |
| | | 303 | | list = await client.Files.ListFolderContinueAsync(list.Cursor); |
| | | 304 | | AddPdfNamesToIndex(list, index); |
| | | 305 | | } |
| | | 306 | | } |
| | | 307 | | catch (Exception e) |
| | | 308 | | { |
| | | 309 | | Console.WriteLine($"Ошибка при построении индекса этикеток: {e.Message}"); |
| | | 310 | | } |
| | | 311 | | |
| | | 312 | | return index; |
| | | 313 | | } |
| | | 314 | | |
| | | 315 | | private static void AddPdfNamesToIndex(ListFolderResult list, HashSet<string> index) |
| | | 316 | | { |
| | | 317 | | foreach (var item in list.Entries.Where(i => i.IsFile)) |
| | | 318 | | { |
| | | 319 | | var name = item.AsFile.Name; |
| | | 320 | | if (!name.EndsWith(".pdf", StringComparison.OrdinalIgnoreCase)) |
| | | 321 | | { |
| | | 322 | | continue; |
| | | 323 | | } |
| | | 324 | | |
| | | 325 | | index.Add(name[..^4]); |
| | | 326 | | } |
| | | 327 | | } |
| | | 328 | | |
| | | 329 | | /// <summary> |
| | | 330 | | /// Получает файл из Dropbox в виде байтов |
| | | 331 | | /// </summary> |
| | | 332 | | public async Task<byte[]> DownloadFileAsync(string dropboxFolderPath, string fileName) |
| | | 333 | | { |
| | | 334 | | await RefreshAccessTokenAsync(); |
| | | 335 | | |
| | | 336 | | using (var dropboxClient = new DropboxClient(_accessToken)) |
| | | 337 | | { |
| | | 338 | | var fullPath = $"{dropboxFolderPath.TrimEnd('/')}/{fileName}"; |
| | | 339 | | var downloadResult = await dropboxClient.Files.DownloadAsync(fullPath); |
| | | 340 | | |
| | | 341 | | using (var contentStream = await downloadResult.GetContentAsStreamAsync()) |
| | | 342 | | using (var memoryStream = new MemoryStream()) |
| | | 343 | | { |
| | | 344 | | await contentStream.CopyToAsync(memoryStream); |
| | | 345 | | return memoryStream.ToArray(); |
| | | 346 | | } |
| | | 347 | | } |
| | | 348 | | } |
| | | 349 | | } |
| | | 350 | | |
| | | 351 | | /// <summary> |
| | | 352 | | /// Информация о файле в Dropbox |
| | | 353 | | /// </summary> |
| | | 354 | | public class DropboxFileInfo |
| | | 355 | | { |
| | 0 | 356 | | public string Name { get; set; } = null!; |
| | 0 | 357 | | public string Path { get; set; } = null!; |
| | 0 | 358 | | public ulong Size { get; set; } |
| | 0 | 359 | | public DateTime Modified { get; set; } |
| | | 360 | | } |
| | | 361 | | } |