/// <summary>
/// Helper method to start or update the recurring job.
/// </summary>
/// <param name="reminder"></param>
private void StartOrUpdateJob(RecurringReminderMessage reminder)
{
using (var scope = _scopeFactory.CreateScope())
{
var reminderJob = scope.ServiceProvider.GetRequiredService <RecurringReminderMessageJob>();
try
{
_jobService.ScheduleRecurringJob(() => reminderJob.Run(reminder),
reminder.CronExpression,
reminder.GetJobId());
}
catch (ArgumentException)
{
var reminderService = scope.ServiceProvider.GetRequiredService <IEntityService <RecurringReminderMessage> >();
reminder.Fault = RecurringReminderMessage.FaultType.InvalidCron;
reminderService.Update(reminder);
}
}
}
/// <summary>
/// Background job execution for reminder messages for the Remembot module.
/// ** NOTE - DO NOT make changes to this signature. If changes are needed, make a new method to use.
/// Changing this file's signature will cause errors with the existing job queues.
/// </summary>
/// <param name="reminder"></param>
/// <returns></returns>
public async Task Run(RecurringReminderMessage reminder)
{
using (var scope = _scopeFactory.CreateScope())
{
var channel = _bot.Client.GetChannel(reminder.ChannelId);
if (channel is null)
{
_logger.LogWarning("Attempt was made to send reminder to channel {ChannelId} that doesn't exist. Removing reminder and stopping job for guild {GuildId}.",
reminder.ChannelId,
reminder.GuildId);
await DisableJob();
return;
}
if (channel is SocketTextChannel stc)
{
await stc.SendMessageAsync(reminder.Message);
}
else
{
_logger.LogInformation("Attempt was made to send reminder to a non-text channel {ChannelId}. Disabling reminder for guild {GuildId}.",
reminder.ChannelId,
reminder.GuildId);
await DisableJob();
}
async Task DisableJob()
{
var entityService = scope.ServiceProvider.GetRequiredService <IEntityService <RecurringReminderMessage> >();
var trackedEntity = await entityService.Find(reminder.Id);
trackedEntity.Enabled = false;
trackedEntity.Fault = RecurringReminderMessage.FaultType.InvalidChannel;
await entityService.Update(trackedEntity);
_jobService.CancelRecurringJob(reminder.GetJobId());
}
}
}
/// <summary>
/// Helper method to stop the recurring job if it exists.
/// </summary>
/// <param name="reminder"></param>
private void StopJobIfExists(RecurringReminderMessage reminder)
{
_jobService.CancelRecurringJob(reminder.GetJobId());
}