feat: initial Papo bot scaffold

src/services/levelService.ts

@@ -0,0 +1,39 @@
+import { Collection, Message } from 'discord.js';
+import { logger } from '../utils/logger.js';
+import { settings } from '../config/state.js';
+
+interface LevelData {
+  xp: number;
+  level: number;
+}
+
+export class LevelService {
+  private data = new Collection<string, LevelData>();
+  private cooldown = new Set<string>();
+
+  handleMessage(message: Message) {
+    if (!message.guild || message.author.bot) return;
+    const guildConfig = settings.get(message.guild.id);
+    if (!guildConfig?.levelingEnabled) return;
+
+    const key = `${message.guild.id}:${message.author.id}`;
+    if (this.cooldown.has(key)) return;
+    this.cooldown.add(key);
+    setTimeout(() => this.cooldown.delete(key), 60_000);
+
+    const entry = this.data.get(key) ?? { xp: 0, level: 0 };
+    entry.xp += 10;
+    const nextLevel = Math.floor(0.2 * Math.sqrt(entry.xp));
+    if (nextLevel > entry.level) {
+      entry.level = nextLevel;
+      message.channel.send({ content: `${message.author} hat Level ${entry.level} erreicht!` }).catch(() => undefined);
+      logger.info(`Level up: ${message.author.tag} -> ${entry.level}`);
+    }
+    this.data.set(key, entry);
+  }
+
+  getLevel(userId: string, guildId: string) {
+    const key = `${guildId}:${userId}`;
+    return this.data.get(key) ?? { xp: 0, level: 0 };
+  }
+}