/// <inheritdoc />
public async Task ExecuteAsync(CancellationToken cancellation = default)
{
var subscriptions = await _subscriptionsStore.GetAllAsync(cancellation);
var channels = await _channelStore.GetAllAsync(cancellation);
var orphanSubscriptions = new List <AlertsSubscription>();
foreach (var subscription in subscriptions)
{
var hasMatchedChannel = channels.Any(c => string
.Equals(c.Name, subscription.Channel, StringComparison.InvariantCultureIgnoreCase));
if (!hasMatchedChannel)
{
orphanSubscriptions.Add(subscription);
}
}
_logger.LogInformation($"Found '{orphanSubscriptions.Count}' orphan subscriptions");
foreach (var orphanSubscription in orphanSubscriptions)
{
_logger.LogInformation("Removing orphan subscription {Chat} {Channel}",
orphanSubscription.ChatName, orphanSubscription.Channel);
await _subscriptionsStore.RemoveAsync(orphanSubscription, cancellation);
}
}
/// <inheritdoc />
protected override async Task Handle(BotActionRequest <ChannelsAction> request, CancellationToken cancellationToken)
{
var chatId = request.Message.Chat.Id;
var channels = await _channelStore.GetAllAsync(cancellationToken);
if (channels.Count < 1)
{
var notSubscribedText = Localizer.GetString(BotResources.ChannelsNotFound);
var replyRequest = new SendTelegramReply(chatId, notSubscribedText);
await Reply.SendAsync(replyRequest, cancellationToken);
return;
}
var subscribedText = Localizer.GetString(BotResources.Channels);
var messageBuilder = new StringBuilder(subscribedText)
.AppendLines(count: 2);
foreach (var(index, channel) in channels.Index())
{
var userSubscribed = await _subscriptionsStore.ExistsAsync(channel.Name, chatId, cancellationToken);
var descriptionSuffix = string.IsNullOrWhiteSpace(channel.Description)
? string.Empty
: $" — {channel.Description}";
var subscribeSuffix = userSubscribed
? string.Empty
: $" (/subscribe_{channel.Name.Replace('-', '_')})";
messageBuilder.AppendLine($"{index + 1}. {channel.Name}{descriptionSuffix}{subscribeSuffix}");
}
await Reply.SendAsync(new SendTelegramReply(chatId, messageBuilder.ToString()), cancellationToken);
}
