Localization added, but not implemented yet.

Gemfile

@@ -3,4 +3,5 @@ source 'https://rubygems.org'
 
 gem 'discordrb', git: 'https://github.com/shardlab/discordrb.git', branch: 'main'
 gem 'dotenv'
-gem 'pg'
+gem 'pg'
+gem 'i18n'

Gemfile.lock

@@ -17,6 +17,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     base64 (0.3.0)
+    concurrent-ruby (1.3.6)
     domain_name (0.6.20240107)
     dotenv (3.2.0)
     event_emitter (0.2.6)
@@ -34,6 +35,8 @@ GEM
     http-accept (1.7.0)
     http-cookie (1.1.0)
       domain_name (~> 0.5)
+    i18n (1.14.8)
+      concurrent-ruby (~> 1.0)
     logger (1.7.0)
     mime-types (3.7.0)
       logger
@@ -78,10 +81,12 @@ PLATFORMS
 DEPENDENCIES
   discordrb!
   dotenv
+  i18n
   pg
 
 CHECKSUMS
   base64 (0.3.0) sha256=27337aeabad6ffae05c265c450490628ef3ebd4b67be58257393227588f5a97b
+  concurrent-ruby (1.3.6) sha256=6b56837e1e7e5292f9864f34b69c5a2cbc75c0cf5338f1ce9903d10fa762d5ab
   discordrb (3.7.2)
   discordrb-webhooks (3.7.2)
   domain_name (0.6.20240107) sha256=5f693b2215708476517479bf2b3802e49068ad82167bcd2286f899536a17d933
@@ -100,6 +105,7 @@ CHECKSUMS
   ffi (1.17.3-x86_64-linux-musl) sha256=086b221c3a68320b7564066f46fed23449a44f7a1935f1fe5a245bd89d9aea56
   http-accept (1.7.0) sha256=c626860682bfbb3b46462f8c39cd470fd7b0584f61b3cc9df5b2e9eb9972a126
   http-cookie (1.1.0) sha256=38a5e60d1527eebc396831b8c4b9455440509881219273a6c99943d29eadbb19
+  i18n (1.14.8) sha256=285778639134865c5e0f6269e0b818256017e8cde89993fdfcbfb64d088824a5
   logger (1.7.0) sha256=196edec7cc44b66cfb40f9755ce11b392f21f7967696af15d274dde7edff0203
   mime-types (3.7.0) sha256=dcebf61c246f08e15a4de34e386ebe8233791e868564a470c3fe77c00eed5e56
   mime-types-data (3.2025.0924) sha256=f276bca15e59f35767cbcf2bc10e023e9200b30bd6a572c1daf7f4cc24994728

src/bot.rb

@@ -15,10 +15,22 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 require 'discordrb'
+require 'i18n'
 require_relative 'database'
+require_relative 'utils/locales_helper'
 
 class FrugalityBot
   def initialize
+
+    I18n.config.enforce_available_locales = false
+
+    locales_path = File.join(File.dirname(__dir__), 'locales')
+    I18n.load_path += Dir["#{locales_path}/*.yml"]
+
+    I18n.backend.load_translations
+    I18n.default_locale = :en
+
+
     @bot = Discordrb::Bot.new(
       token: ENV['BOT_TOKEN'],
       intents: [:servers, :server_messages]

src/commands/add.rb

@@ -14,25 +14,40 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+require 'i18n'
+
 module Commands
-    module Add
-        extend self
+  module Add
+    extend self
+
+    def register(bot, db)
+      command_key = :add
+      arg_amount_key = :amount
+      arg_reason_key = :reason
+
+      cmd_desc = I18n.t('commands.add.description', locale: :en)
+      amount_desc = I18n.t('commands.add.args.amount_desc', locale: :en)
+      reason_desc = I18n.t('commands.add.args.reason_desc', locale: :en)
+
+      bot.register_application_command(command_key, cmd_desc, server_id: ENV['TEST_SERVER_ID']) do |cmd|
+        cmd.integer(arg_amount_key, amount_desc, required: true)
+        cmd.string(arg_reason_key, reason_desc, required: false) 
+      end
+
+      bot.application_command(command_key) do |event|
+        db_lang = db.get_language(event.user.id)
+        discord_lang = event.locale.to_s[0..1]
+        I18n.locale = db_lang || (I18n.available_locales.include?(discord_lang.to_sym) ? discord_lang : :en)
+
+        user_id = event.user.id
+        amount = event.options['amount']
+        reason = event.options['reason'] || 'income'
         
-            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
+        db.update_balance(user_id, amount, reason)
 
-            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
+        msg = I18n.t('responses.add.success', amount: amount, reason: reason, default: "Added #{amount} (Reason: #{reason})")
+        event.respond(content: msg)
+      end
     end
+  end
 end

src/commands/balance.rb

@@ -15,13 +15,13 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 module Commands
-    module Currency
+    module Balance
         extend self
 
         def register(bot, db)
-            bot.register_application_command(:currency, 'Get your currency', server_id: ENV['TEST_SERVER_ID'])
+            bot.register_application_command(:balance, 'Get your currency', server_id: ENV['TEST_SERVER_ID'])
 
-            bot.application_command(:currency) do |event|
+            bot.application_command(:balance) do |event|
             # 1. Get the User ID from the event
             user_id = event.user.id
 

src/database.rb

@@ -50,19 +50,23 @@ class Database
         @conn.exec(sql_wallet)
         @conn.exec(sql_ledger)
         @conn.exec(sql_index)
+
+        begin
+            @conn.exec("ALTER TABLE wallets ADD COLUMN IF NOT EXISTS locale VARCHAR(5) DEFAULT 'en'")
+        rescue PG::Error => e
+            puts "Migration note: #{e.message}"
+        end
+
         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
+        # Run the query using parameters ($1) to prevent SQL injection
         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?
             return 0 # User has no money/row yet
         else
-        # 3. Return the value (don't print it)
             return result[0]['amount'].to_i
         end
     end
@@ -106,4 +110,23 @@ class Database
             net: row['net_change'].to_i
         }
     end
+
+    def get_language(user_id)
+        result = @conn.exec("SELECT locale FROM wallets WHERE user_id = $1", [user_id])
+
+        return nil if result.num_tuples.zero?
+
+        return result[0]['locale']
+    end
+
+    def set_language(user_id, locale)
+        sql = <<~SQL
+            INSERT INTO wallets(user_id, amount, locale)
+            VALUES ($1, 0, $2)
+            ON CONFLICT (user_id)
+            DO UPDATE SET locale = $2
+        SQL
+
+        @conn.exec(sql, [user_id, locale])
+    end
 end

src/locales/en.yml

@@ -0,0 +1,19 @@
+en:
+  commands:
+    add:
+      name: "add"
+      description: "Add money to the wallet."
+      args:
+        amount: "amount"
+        amount_desc: "How much money you're adding to the wallet."
+        reason: "reason"
+        reason_desc: "Reason you're adding money. Leave blank for deafult."
+    balance:
+      name: "balance"
+      description: "Check your wallet."
+  
+  responses:
+    add:
+      success: "Added **%{amount}** coins to the wallet. Reason: **%{reason}**"
+    balance:
+      view: "You have **%{balance}** coins."

src/locales/es.yml

@@ -0,0 +1,19 @@
+es:
+  commands:
+    add:
+      name: "añadir"
+      description: "Añade monedas a la billetera."
+      args:
+        amount: "cantidad"
+        amount_desc: "La cantidad de monedas que añades."
+        reason: "motivo"
+        reason_desc: "El motivo por el cual añades monedas. Déjalo vacío para default."
+    balance:
+      name: "saldo"
+      description: "Revisa tu billetera."
+  
+  responses:
+    add:
+      success: "Se añadieron **%{amount}** monedas a la billetera. Motivo: **%{reason}**"
+    balance:
+      view: "Tienes **%{balance}** monedas."

src/utils/locales_helper.rb

@@ -0,0 +1,41 @@
+# 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/>.
+
+require 'i18n'
+
+module LocalesHelper
+    def self.generate(key_path)
+        locales_map = {}
+
+        discord_map = {
+            :en => 'en-US',
+            :es => 'es-ES'
+        }
+
+        I18n.available_locales.each do |lang|
+            next if lang == :en
+
+            text = I18n.t(key_path, locale: lang, default: nil)
+
+            if text && text != 'nil'
+                discord_code = discord_map[lang] || lang.to_s
+                locales_map[discord_code] = text
+            end
+        end
+
+        return locales_map
+    end
+end