users pagination

src/handlers/adminUserHandler.js

@@ -11,12 +11,7 @@ export default class AdminUserHandler {
         return config.ADMIN_IDS.includes(userId.toString());
     }
 
-  async handleUserList(msg) {
+    async calculateStatistics() {
-    if (!this.isAdmin(msg.from.id)) {
-      await this.bot.sendMessage(msg.chat.id, 'Unauthorized access.');
-      return;
-    }
-
         try {
             const users = await db.allAsync(`
         SELECT 
@@ -31,10 +26,6 @@ export default class AdminUserHandler {
         GROUP BY u.id
         ORDER BY u.created_at DESC
       ` );
-      if (users.length === 0) {
-        await this.bot.sendMessage(msg.chat.id, 'No users registered yet.');
-        return;
-      }
 
             // Calculate general statistics
             const totalUsers = users.length;
@@ -47,8 +38,47 @@ export default class AdminUserHandler {
             message += `👥 Total Users: ${totalUsers}\n`;
             message += `✅ Active Users: ${activeUsers}\n`;
             message += `💰 Total Balance: $${totalBalance.toFixed(2)}\n`;
-      message += `🛍 Total Purchases: ${totalPurchases}\n\n`;
+            message += `🛍 Total Purchases: ${totalPurchases}`;
-      message += `Select a user from the list below:`;
+
+            return message;
+        } catch (error) {
+            return null
+        }
+    }
+
+    async viewUserPage(page) {
+        const limit = 10;
+        const offset = (page || 0) * limit;
+
+        const previousPage = page > 0 ? page - 1 : 0;
+        const nextPage = page + 1;
+
+        try {
+            const users = await db.allAsync(`
+        SELECT 
+          u.*,
+          COUNT(DISTINCT p.id) as total_purchases,
+          COUNT(DISTINCT cw.id) as total_wallets,
+          COALESCE(SUM(t.amount), 0) as total_balance
+        FROM users u
+        LEFT JOIN purchases p ON u.id = p.user_id
+        LEFT JOIN crypto_wallets cw ON u.id = cw.user_id
+        LEFT JOIN transactions t ON u.id = t.user_id
+        GROUP BY u.id
+        ORDER BY u.created_at DESC
+        LIMIT ?
+        OFFSET ?
+      `, [limit, offset]);
+            if ((users.length === 0) && (page == 0)) {
+                return {text: 'No users registered yet.'};
+            }
+
+            if ((users.length === 0) && (page > 0)) {
+                return await this.viewUserPage(page - 1);
+            }
+
+            const statistics = await this.calculateStatistics()
+            const message = `${statistics}\n\nSelect a user from the list below:`;
 
             // Create inline keyboard with user list
             const keyboard = {
@@ -58,13 +88,46 @@ export default class AdminUserHandler {
                 }])
             };
 
-      await this.bot.sendMessage(msg.chat.id, message, {
+            keyboard.inline_keyboard.push([
-        parse_mode: 'HTML',
+                {text: `«`, callback_data: `list_users_${previousPage}`},
-        reply_markup: keyboard
+                {text: `»`, callback_data: `list_users_${nextPage}`},
-      });
+            ])
+
+            return {text: message, markup: keyboard}
         } catch (error) {
             console.error('Error in handleUserList:', error);
-      await this.bot.sendMessage(msg.chat.id, 'Error loading user list. Please try again.');
+            return {text: 'Error loading user list. Please try again.'}
+        }
+    }
+
+    async handleUserList(msg) {
+        if (!this.isAdmin(msg.from.id)) {
+            await this.bot.sendMessage(msg.chat.id, 'Unauthorized access.');
+            return;
+        }
+
+        const {text, markup} = await this.viewUserPage(0);
+        await this.bot.sendMessage(msg.chat.id, text, {reply_markup: markup})
+    }
+
+    async handleUserListPage(callbackQuery) {
+        if (!this.isAdmin(callbackQuery.from.id)) {
+            return;
+        }
+
+        const chatId = callbackQuery.message.chat.id;
+        const page = parseInt(callbackQuery.data.replace('list_users_', ''));
+
+        try {
+            const {text, markup} = await this.viewUserPage(page);
+            await this.bot.editMessageText(text, {
+                chat_id: chatId,
+                message_id: callbackQuery.message.message_id,
+                reply_markup: markup,
+                parse_mode: 'HTML'
+            });
+        } catch (e) {
+            return;
         }
     }
 
@@ -248,7 +311,10 @@ ${purchases.map(p => `  • ${p.product_name} x${p.quantity} - $${p.total_price}
             const keyboard = {
                 inline_keyboard: [
                     ...wallets.map(wallet => [
-            { text: `${wallet.wallet_type}: ${wallet.address}`, callback_data: `edit_wallet_${wallet.wallet_type}` }
+                        {
+                            text: `${wallet.wallet_type}: ${wallet.address}`,
+                            callback_data: `edit_wallet_${wallet.wallet_type}`
+                        }
                     ]),
                     [{text: '« Back', callback_data: `view_user_${userId}`}]
                 ]

src/index.js

@@ -254,6 +254,9 @@ bot.on('callback_query', async (callbackQuery) => {
         else if (action.startsWith('view_user_')) {
             logDebug(action, 'handleViewUser');
             await adminUserHandler.handleViewUser(callbackQuery);
+        } else if (action.startsWith('list_users_')) {
+            logDebug(action, 'handleViewUser');
+            await adminUserHandler.handleUserListPage(callbackQuery);
         } else if (action.startsWith('delete_user_')) {
             logDebug(action, 'handleDeleteUser');
             await adminUserHandler.handleDeleteUser(callbackQuery);