feat: add (temp?) db mgr

src/modules/db.ts

@@ -0,0 +1,75 @@
+import {
+    Attributes,
+    DataTypes,
+    Model,
+    ModelAttributes,
+    ModelStatic,
+    Sequelize
+} from 'sequelize';
+
+export class DatabaseManager {
+    private readonly db: Sequelize;
+
+    public guildData: ModelStatic<Model> | null = null;
+    public userData: ModelStatic<Model> | null = null;
+
+    private constructor() {
+        this.db = new Sequelize('db', 'luma', '', {
+            host: 'localhost',
+            dialect: 'sqlite',
+            storage: 'db.sqlite',
+            logging: false
+        });
+
+        this.db.sync();
+    }
+
+    public async init(userKeys: object, guildKeys: object) {
+        this.userData = this.db.define('user_data', {
+            user_id: { type: DataTypes.STRING, unique: true, primaryKey: true },
+            ...userKeys
+        });
+
+        this.guildData = this.db.define('guild_data', {
+            guild_id: { type: DataTypes.STRING, unique: true, primaryKey: true },
+            ...guildKeys
+        });
+
+        await this.db.sync({ alter: true });
+    }
+
+    public sync(): void {
+        this.db.sync();
+    }
+
+    public async getUser(userId: string) {
+        if (!this.userData) throw new Error("Database not initialized");
+
+        const [user] = await this.userData.findOrCreate({
+            where: { user_id: userId },
+            defaults: { user_id: userId }
+        });
+        return user;
+    }
+
+    public async getGuild(guildId: string) {
+        if (!this.guildData) throw new Error("Database not initialized");
+
+        const [guild] = await this.guildData.findOrCreate({
+            where: { guild_id: guildId },
+            defaults: { guild_id: guildId }
+        });
+        return guild;
+    }
+
+    /*
+        singleton logic
+    */
+    static #instance: DatabaseManager | null = null;
+
+    public static get get(): DatabaseManager {
+        if (!DatabaseManager.#instance)
+            DatabaseManager.#instance = new DatabaseManager();
+        return DatabaseManager.#instance;
+    }
+}