Updated database content, new "add" command for earnings.

src/commands/add.rb

@@ -0,0 +1,38 @@
+# FrugalityBot
+# Copyright (C) 2026 Eri (csxkdv/nxkdv) nxkdv@thenight.club
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+module Commands
+    module Add
+        extend self
+        
+            def register(bot, db)
+                bot.register_application_command(:add, 'Adds money to the wallet.', server_id: ENV['TEST_SERVER_ID']) do |cmd|
+                cmd.integer('amount', 'The amount you want to add.', required: true)
+                cmd.string('reason', "Reason you're adding money to the wallet. Leave empty for default.", required: false)
+            end
+
+            bot.application_command(:add) do |event|
+                user_id = event.user.id
+                amount = event.options['amount']
+                reason = event.options['reason'] ||= 'transaction'
+                
+                db.update_balance(user_id, amount, reason)
+
+                event.respond(content: "Added: #{amount} to the wallet.\nReason: #{reason}")
+            end
+        end
+    end
+end

src/commands/echo.rb

@@ -17,6 +17,7 @@
 module Commands
     module Echo
         extend self
+        
             def register(bot, _db)
                 bot.register_application_command(:echo, 'Repeats what you say', server_id: ENV['TEST_SERVER_ID']) do |cmd|
                 cmd.string('message', 'The text you want the bot to repeat', required: true)

src/database.rb

@@ -19,27 +19,44 @@ require 'pg'
 class Database
     def initialize
         # Connect once when the bot starts
-        @conn = PG.connect(dbname: 'frugality_database')
+        @conn = PG.connect(dbname: 'fgbot_db')
 
         init_tables
     end
 
     def init_tables
-        sql = <<~SQL
+        sql_wallet = <<~SQL
-        CREATE TABLE IF NOT EXISTS total_money (
+        CREATE TABLE IF NOT EXISTS wallets (
             user_id BIGINT PRIMARY KEY,
             amount BIGINT DEFAULT 0
         );
         SQL
 
-        @conn.exec(sql)
+        sql_ledger = <<~SQL
+        CREATE TABLE IF NOT EXISTS transactions (
+            id SERIAL PRIMARY KEY,
+            user_id BIGINT NOT NULL,
+            amount BIGINT NOT NULL,
+            reason VARCHAR(50),
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        );
+        SQL
+
+        sql_index = <<~SQL
+        CREATE INDEX IF NOT EXISTS idx_user_history 
+        ON transactions(user_id, created_at);
+        SQL
+
+        @conn.exec(sql_wallet)
+        @conn.exec(sql_ledger)
+        @conn.exec(sql_index)
         puts "Database tables have been initialized."
     end
 
     # We pass the user_id
     def get_currency(user_id)
         # 1. Run the query using parameters ($1) to prevent SQL injection
-        result = @conn.exec_params("SELECT amount FROM total_money WHERE user_id = $1", [user_id])
+        result = @conn.exec_params("SELECT amount FROM wallets WHERE user_id = $1", [user_id])
 
         # 2. Check if the user exists
         if result.num_tuples.zero?
@@ -49,4 +66,23 @@ class Database
             return result[0]['amount'].to_i
         end
     end
+
+    def update_balance(user_id, amount, reason = "transaction")
+        @conn.transaction do
+            @conn.exec_params(
+                "INSERT INTO transactions (user_id, amount, reason) VALUES ($1, $2, $3)",
+                [user_id, amount, reason]
+            )
+            
+            # We update the user's wallet
+            sql_update = <<~SQL
+            INSERT INTO wallets (user_id, amount)
+            VALUES ($1, $2)
+            ON CONFLICT (user_id)
+            DO UPDATE SET amount = wallets.amount + $2
+            SQL
+
+            @conn.exec_params(sql_update, [user_id, amount])
+        end
+    end
 end