| | | 1 | | using MailKit; |
| | | 2 | | using MailKit.Net.Imap; |
| | | 3 | | using MailKit.Search; |
| | | 4 | | using Microsoft.Extensions.Logging; |
| | | 5 | | |
| | | 6 | | namespace Services.EmailRoutingServices; |
| | | 7 | | |
| | | 8 | | public static class ImapConnectionTester |
| | | 9 | | { |
| | | 10 | | public static async Task<ImapConnectionStatus> CheckAsync( |
| | | 11 | | ImapSettings settings, |
| | | 12 | | ILogger? logger = null, |
| | | 13 | | CancellationToken cancellationToken = default) |
| | | 14 | | { |
| | 14 | 15 | | var status = new ImapConnectionStatus |
| | 14 | 16 | | { |
| | 14 | 17 | | UserName = settings.UserName, |
| | 14 | 18 | | Host = settings.Host, |
| | 14 | 19 | | Port = settings.Port, |
| | 14 | 20 | | Folder = settings.Folder, |
| | 14 | 21 | | FetchLimit = settings.FetchLimit, |
| | 14 | 22 | | CheckedAtUtc = DateTime.UtcNow |
| | 14 | 23 | | }; |
| | | 24 | | |
| | 14 | 25 | | if (string.IsNullOrWhiteSpace(settings.Host) || string.IsNullOrWhiteSpace(settings.UserName)) |
| | | 26 | | { |
| | 8 | 27 | | status.IsConfigured = false; |
| | 8 | 28 | | status.ErrorMessage = "IMAP не настроен: укажите Host и UserName."; |
| | 8 | 29 | | return status; |
| | | 30 | | } |
| | | 31 | | |
| | 6 | 32 | | if (string.IsNullOrWhiteSpace(settings.Password)) |
| | | 33 | | { |
| | 4 | 34 | | status.IsConfigured = true; |
| | 4 | 35 | | status.IsConnected = false; |
| | 4 | 36 | | status.ErrorMessage = "Пароль не задан."; |
| | 4 | 37 | | return status; |
| | | 38 | | } |
| | | 39 | | |
| | 2 | 40 | | status.IsConfigured = true; |
| | | 41 | | |
| | | 42 | | try |
| | | 43 | | { |
| | 2 | 44 | | using var client = new ImapClient(); |
| | 2 | 45 | | await client.ConnectAsync(settings.Host, settings.Port, settings.UseSsl, cancellationToken); |
| | 0 | 46 | | await client.AuthenticateAsync(settings.UserName, settings.Password, cancellationToken); |
| | | 47 | | |
| | 0 | 48 | | var inbox = client.GetFolder(settings.Folder); |
| | 0 | 49 | | await inbox.OpenAsync(FolderAccess.ReadOnly, cancellationToken); |
| | | 50 | | |
| | 0 | 51 | | var unseenUids = await inbox.SearchAsync(SearchQuery.NotSeen, cancellationToken); |
| | 0 | 52 | | status.UnseenCount = unseenUids.Count; |
| | | 53 | | |
| | 0 | 54 | | var sinceUtc = ImapFetchWindow.ResolveSinceUtc(settings); |
| | 0 | 55 | | var scanLimit = ImapFetchWindow.ResolveScanLimit(settings); |
| | 0 | 56 | | var summaries = await ImapEmailInboxClient.LoadRecentSummariesAsync(inbox, scanLimit, cancellationToken); |
| | 0 | 57 | | status.UnseenReadyCount = summaries.Count(s => ImapFetchWindow.IsCandidateMessage(s, sinceUtc)); |
| | | 58 | | |
| | 0 | 59 | | await client.DisconnectAsync(true, cancellationToken); |
| | 0 | 60 | | status.IsConnected = true; |
| | 0 | 61 | | } |
| | 1 | 62 | | catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested) |
| | | 63 | | { |
| | | 64 | | // Клиент уже отменил HTTP-запрос: это не сбой IMAP и не повод писать Warning в errors-*.log. |
| | 1 | 65 | | throw; |
| | | 66 | | } |
| | 1 | 67 | | catch (Exception ex) |
| | | 68 | | { |
| | 1 | 69 | | if (ImapEmailInboxClient.IsTransientConnectionException(ex)) |
| | | 70 | | { |
| | 1 | 71 | | logger?.LogInformation( |
| | 1 | 72 | | "IMAP connection check encountered transient connection issue for {UserName}@{Host}: {Message}", |
| | 1 | 73 | | settings.UserName, |
| | 1 | 74 | | settings.Host, |
| | 1 | 75 | | ex.Message); |
| | | 76 | | } |
| | | 77 | | else |
| | | 78 | | { |
| | 0 | 79 | | logger?.LogWarning(ex, "IMAP connection check failed for {UserName}@{Host}", settings.UserName, settings |
| | | 80 | | } |
| | | 81 | | |
| | 1 | 82 | | status.IsConnected = false; |
| | 1 | 83 | | status.ErrorMessage = ex.Message; |
| | 1 | 84 | | } |
| | | 85 | | |
| | 1 | 86 | | return status; |
| | 13 | 87 | | } |
| | | 88 | | } |