| | | 1 | | using TeleFlow.Telegram.Schema.Abstractions; |
| | | 2 | | using TeleFlow.Telegram.Schema.Constants; |
| | | 3 | | using TeleFlow.Telegram.Schema.Types; |
| | | 4 | | |
| | | 5 | | namespace TeleFlow.Telegram.Internal; |
| | | 6 | | |
| | | 7 | | /// <summary> |
| | | 8 | | /// Derives the Bot API target for ephemeral actions from message and callback updates. |
| | | 9 | | /// It keeps Telegram's group-only recipient rules out of the public action classes. |
| | | 10 | | /// </summary> |
| | | 11 | | internal static class EphemeralMessageTargetResolver |
| | | 12 | | { |
| | | 13 | | public static EphemeralMessageTarget ResolveForMessage(Message message) |
| | | 14 | | { |
| | 2 | 15 | | ArgumentNullException.ThrowIfNull(message); |
| | | 16 | | |
| | 2 | 17 | | return CreateTarget( |
| | 2 | 18 | | message.Chat, |
| | 2 | 19 | | message.ReceiverUser?.Id ?? message.From?.Id, |
| | 2 | 20 | | "The current message does not identify a user who can receive an ephemeral message."); |
| | | 21 | | } |
| | | 22 | | |
| | | 23 | | public static EphemeralMessageTarget ResolveForCallback( |
| | | 24 | | CallbackQuery callbackQuery, |
| | | 25 | | TelegramMessageTarget messageTarget) |
| | | 26 | | { |
| | 1 | 27 | | ArgumentNullException.ThrowIfNull(callbackQuery); |
| | | 28 | | |
| | 1 | 29 | | return CreateTarget( |
| | 1 | 30 | | messageTarget.Chat, |
| | 1 | 31 | | callbackQuery.From.Id, |
| | 1 | 32 | | "The current callback query does not identify a user who can receive an ephemeral message."); |
| | | 33 | | } |
| | | 34 | | |
| | | 35 | | public static EphemeralMessageTarget ResolveForEphemeralMessage(Message message) |
| | | 36 | | { |
| | 3 | 37 | | ArgumentNullException.ThrowIfNull(message); |
| | | 38 | | |
| | 3 | 39 | | return CreateTarget( |
| | 3 | 40 | | message.Chat, |
| | 3 | 41 | | message.ReceiverUser?.Id, |
| | 3 | 42 | | "The current ephemeral message does not identify its receiver."); |
| | | 43 | | } |
| | | 44 | | |
| | | 45 | | public static long ResolveReceiverUserId( |
| | | 46 | | CallbackQuery callbackQuery, |
| | | 47 | | TelegramMessageTarget messageTarget) |
| | | 48 | | { |
| | 3 | 49 | | ArgumentNullException.ThrowIfNull(callbackQuery); |
| | | 50 | | |
| | 3 | 51 | | return messageTarget.ReceiverUserId ?? callbackQuery.From.Id; |
| | | 52 | | } |
| | | 53 | | |
| | | 54 | | private static EphemeralMessageTarget CreateTarget( |
| | | 55 | | Chat chat, |
| | | 56 | | long? receiverUserId, |
| | | 57 | | string missingReceiverMessage) |
| | | 58 | | { |
| | 6 | 59 | | ArgumentNullException.ThrowIfNull(chat); |
| | | 60 | | |
| | 6 | 61 | | if (!string.Equals(chat.Type, ChatTypes.Group, StringComparison.Ordinal) && |
| | 6 | 62 | | !string.Equals(chat.Type, ChatTypes.Supergroup, StringComparison.Ordinal)) |
| | | 63 | | { |
| | 1 | 64 | | throw new InvalidOperationException( |
| | 1 | 65 | | "Ephemeral messages can only be sent in a group or supergroup chat."); |
| | | 66 | | } |
| | | 67 | | |
| | 5 | 68 | | if (receiverUserId is not long userId || userId <= 0) |
| | | 69 | | { |
| | 0 | 70 | | throw new InvalidOperationException(missingReceiverMessage); |
| | | 71 | | } |
| | | 72 | | |
| | 5 | 73 | | return new EphemeralMessageTarget(IntegerString.From(chat.Id), userId); |
| | | 74 | | } |
| | | 75 | | } |