Initial commit

src/models/User.js

@@ -0,0 +1,66 @@
+import db from '../config/database.js';
+
+export default class User {
+  static async create(telegramId) {
+    try {
+      // First check if user exists
+      const existingUser = await this.getById(telegramId);
+      if (existingUser) {
+        return existingUser.id;
+      }
+
+      // Begin transaction
+      await db.runAsync('BEGIN TRANSACTION');
+
+      // Create new user
+      const result = await db.runAsync(
+        'INSERT INTO users (telegram_id) VALUES (?)',
+        [telegramId.toString()]
+      );
+
+      // Commit transaction
+      await db.runAsync('COMMIT');
+
+      return result.lastID;
+    } catch (error) {
+      // Rollback on error
+      await db.runAsync('ROLLBACK');
+      console.error('Error creating user:', error);
+      throw error;
+    }
+  }
+
+  static async getById(telegramId) {
+    try {
+      return await db.getAsync(
+        'SELECT * FROM users WHERE telegram_id = ?',
+        [telegramId.toString()]
+      );
+    } catch (error) {
+      console.error('Error getting user:', error);
+      throw error;
+    }
+  }
+
+  static async getUserStats(telegramId) {
+    try {
+      return await db.getAsync(`
+        SELECT 
+          u.*,
+          COUNT(DISTINCT p.id) as purchase_count,
+          COALESCE(SUM(p.total_price), 0) as total_spent,
+          COUNT(DISTINCT cw.id) as crypto_wallet_count,
+          COUNT(DISTINCT cw2.id) as archived_wallet_count
+        FROM users u
+        LEFT JOIN purchases p ON u.id = p.user_id
+        LEFT JOIN crypto_wallets cw ON u.id = cw.user_id AND cw.wallet_type NOT LIKE '%_%'
+        LEFT JOIN crypto_wallets cw2 ON u.id = cw2.user_id AND cw2.wallet_type LIKE '%_%'
+        WHERE u.telegram_id = ?
+        GROUP BY u.id
+      `, [telegramId.toString()]);
+    } catch (error) {
+      console.error('Error getting user stats:', error);
+      throw error;
+    }
+  }
+}