Cleanup on bot start

src/service/cleanup.ts

@@ -0,0 +1,39 @@
+import { Badword, database, GuildSetting } from "../data";
+import client from "../client";
+import { DiscordAPIError } from "discord.js";
+
+export default async function execute(): Promise<void> {
+    const guilds = await database.getRepository(GuildSetting).find({
+        where: {
+            preserveDataOnGuildLeave: false
+        }
+    });
+
+    for (const guild of guilds) {
+        try {
+            await client.guilds.fetch(guild.id);
+        } catch (error) {
+            if (!(error instanceof DiscordAPIError)) {
+                console.error(`service.cleanup failed: ${error}`);
+                return;
+            } 
+
+            const id = guild.id;
+
+            // 5001 = Missing access
+            if (error.code.toString() !== "50001") {
+                console.warn(`Guild ${guild.id} is unavailable but not because of error 5001:\n${error}`);
+                continue;
+            }
+
+            await database.getRepository(Badword).delete({
+                guildID: guild.id
+            });
+
+            await database.getRepository(GuildSetting).remove(guild);
+            console.log(`Removed data for guild ${id}`);
+        }
+    }
+
+    console.log("Cleanup completed");
+}