Added early event start notifications (#5)

totally didn't take 2 painful days

Co-authored-by: Octol1ttle <l1ttleofficial@outlook.com>

Boyfriend/Boyfriend.cs

@@ -49,7 +49,8 @@ public static class Boyfriend {
         { "EventCreatedChannel", "0" },
         { "EventStartedChannel", "0" },
         { "EventCancelledChannel", "0" },
-        { "EventCompletedChannel", "0" }
+        { "EventCompletedChannel", "0" },
+        { "EventEarlyNotificationOffset", "0" }
     };
 
     public static void Main() {

Boyfriend/EventHandler.cs

@@ -132,6 +132,9 @@ public static class EventHandler {
                     scheduledEvent.StartTime.ToUnixTimeSeconds().ToString(), Utils.Wrap(scheduledEvent.Description)),
                 true);
         }
+        if (eventConfig["EventEarlyNotificationOffset"] != "0") {
+            _ = Utils.SendEarlyEventStartNotificationAsync(channel, scheduledEvent, Convert.ToInt32(eventConfig["EventEarlyNotificationOffset"]));
+        }
     }
 
     private static async Task ScheduledEventCancelledEvent(SocketGuildEvent scheduledEvent) {

Boyfriend/Messages.Designer.cs

@@ -410,6 +410,15 @@ namespace Boyfriend {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to {0}Event {1} will start &lt;t:{2}:R&gt;!.
+        /// </summary>
+        internal static string EventEarlyNotification {
+            get {
+                return ResourceManager.GetString("EventEarlyNotification", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to {0}Event {1} is starting at {2}!.
         /// </summary>
@@ -788,6 +797,15 @@ namespace Boyfriend {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to .
+        /// </summary>
+        internal static string SettingsEventEarlyNotificationOffset {
+            get {
+                return ResourceManager.GetString("SettingsEventEarlyNotificationOffset", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Role for event creation notifications.
         /// </summary>

Boyfriend/Messages.resx

@@ -384,4 +384,10 @@
     <data name="ServerBlacklisted" xml:space="preserve">
         <value>This feature is unavailable because this guild is currently blacklisted.</value>
     </data>
+    <data name="EventEarlyNotification" xml:space="preserve">
+        <value>{0}Event {1} will start &lt;t:{2}:R&gt;!</value>
+    </data>
+    <data name="SettingsEventEarlyNotificationOffset" xml:space="preserve">
+        <value>Early event start notification offset</value>
+    </data>
 </root>

Boyfriend/Messages.ru.resx

@@ -375,4 +375,10 @@
     <data name="ServerBlacklisted" xml:space="preserve">
         <value>Эта функция недоступна потому что этот сервер находится в чёрном списке.</value>
     </data>
+    <data name="EventEarlyNotification" xml:space="preserve">
+        <value>{0}Событие {1} начнется &lt;t:{2}:R&gt;!</value>
+    </data>
+    <data name="SettingsEventEarlyNotificationOffset" xml:space="preserve">
+        <value>Офсет отправки преждевременного уведомления о начале события</value>
+    </data>
 </root>

Boyfriend/Messages.tt-ru.resx

@@ -371,4 +371,10 @@
     <data name="ServerBlacklisted" xml:space="preserve">
         <value>упс, кажется ваш сервер в черном списке, и я вам ничем помочь не смогу)</value>
     </data>
+    <data name="EventEarlyNotification" xml:space="preserve">
+        <value>{0}квест {1} начнется &lt;t:{2}:R&gt;!</value>
+    </data>
+    <data name="SettingsEventEarlyNotificationOffset" xml:space="preserve">
+        <value>заранее пнуть в минутах до начала квеста</value>
+    </data>
 </root>

Boyfriend/Utils.cs

@@ -167,4 +167,22 @@ public static class Utils {
         return guild.GetUser(196160375593369600) != null && guild.OwnerId != 326642240229474304 &&
                guild.OwnerId != 504343489664909322;
     }
+
+    public static async Task SendEarlyEventStartNotificationAsync(SocketTextChannel? channel, SocketGuildEvent scheduledEvent, int minuteOffset) {
+        await Task.Delay(scheduledEvent.StartTime.Subtract(DateTimeOffset.Now).Subtract(TimeSpan.FromMinutes(minuteOffset)));
+        var guild = scheduledEvent.Guild;
+        if (guild.GetEvent(scheduledEvent.Id) is null) return;
+        var eventConfig = Boyfriend.GetGuildConfig(guild.Id);
+
+        var receivers = eventConfig["EventStartedReceivers"];
+        var role = guild.GetRole(Convert.ToUInt64(eventConfig["EventNotifyReceiverRole"]));
+        var mentions = Boyfriend.StringBuilder;
+
+        if (receivers.Contains("role") && role != null) mentions.Append($"{role.Mention} ");
+        if (receivers.Contains("users") || receivers.Contains("interested"))
+            mentions = (await scheduledEvent.GetUsersAsync(15)).Aggregate(mentions,
+                (current, user) => current.Append($"{user.Mention} "));
+        await channel?.SendMessageAsync(string.Format(Messages.EventEarlyNotification, mentions, Wrap(scheduledEvent.Name), scheduledEvent.StartTime.ToUnixTimeSeconds()))!;
+        mentions.Clear();
+    }
 }