refactor(src): split oversized modules

src/discord/monitor/system-events.ts

@@ -0,0 +1,101 @@
+import { type Message, MessageType } from "@buape/carbon";
+
+import { formatDiscordUserTag } from "./format.js";
+
+export function resolveDiscordSystemEvent(
+  message: Message,
+  location: string,
+): string | null {
+  switch (message.type) {
+    case MessageType.ChannelPinnedMessage:
+      return buildDiscordSystemEvent(message, location, "pinned a message");
+    case MessageType.RecipientAdd:
+      return buildDiscordSystemEvent(message, location, "added a recipient");
+    case MessageType.RecipientRemove:
+      return buildDiscordSystemEvent(message, location, "removed a recipient");
+    case MessageType.UserJoin:
+      return buildDiscordSystemEvent(message, location, "user joined");
+    case MessageType.GuildBoost:
+      return buildDiscordSystemEvent(message, location, "boosted the server");
+    case MessageType.GuildBoostTier1:
+      return buildDiscordSystemEvent(
+        message,
+        location,
+        "boosted the server (Tier 1 reached)",
+      );
+    case MessageType.GuildBoostTier2:
+      return buildDiscordSystemEvent(
+        message,
+        location,
+        "boosted the server (Tier 2 reached)",
+      );
+    case MessageType.GuildBoostTier3:
+      return buildDiscordSystemEvent(
+        message,
+        location,
+        "boosted the server (Tier 3 reached)",
+      );
+    case MessageType.ThreadCreated:
+      return buildDiscordSystemEvent(message, location, "created a thread");
+    case MessageType.AutoModerationAction:
+      return buildDiscordSystemEvent(
+        message,
+        location,
+        "auto moderation action",
+      );
+    case MessageType.GuildIncidentAlertModeEnabled:
+      return buildDiscordSystemEvent(
+        message,
+        location,
+        "raid protection enabled",
+      );
+    case MessageType.GuildIncidentAlertModeDisabled:
+      return buildDiscordSystemEvent(
+        message,
+        location,
+        "raid protection disabled",
+      );
+    case MessageType.GuildIncidentReportRaid:
+      return buildDiscordSystemEvent(message, location, "raid reported");
+    case MessageType.GuildIncidentReportFalseAlarm:
+      return buildDiscordSystemEvent(
+        message,
+        location,
+        "raid report marked false alarm",
+      );
+    case MessageType.StageStart:
+      return buildDiscordSystemEvent(message, location, "stage started");
+    case MessageType.StageEnd:
+      return buildDiscordSystemEvent(message, location, "stage ended");
+    case MessageType.StageSpeaker:
+      return buildDiscordSystemEvent(
+        message,
+        location,
+        "stage speaker updated",
+      );
+    case MessageType.StageTopic:
+      return buildDiscordSystemEvent(message, location, "stage topic updated");
+    case MessageType.PollResult:
+      return buildDiscordSystemEvent(message, location, "poll results posted");
+    case MessageType.PurchaseNotification:
+      return buildDiscordSystemEvent(
+        message,
+        location,
+        "purchase notification",
+      );
+    default:
+      return null;
+  }
+}
+
+function buildDiscordSystemEvent(
+  message: Message,
+  location: string,
+  action: string,
+) {
+  const authorLabel = message.author
+    ? formatDiscordUserTag(message.author)
+    : "";
+  const actor = authorLabel ? `${authorLabel} ` : "";
+  return `Discord system: ${actor}${action} in ${location}`;
+}