upd

Jenkinsfile

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+pipeline {
+    agent any
+    
+    environment {
+        BOT_DIR = '/srv/fymious-tg-bot'
+        VENV_DIR = '/srv/fymious-tg-bot/.venv'
+    }
+    
+    stages {
+        stage('Checkout') {
+            steps {
+                echo 'Pulling latest code...'
+                checkout scm
+            }
+        }
+        
+        stage('Setup') {
+            steps {
+                echo 'Setting up virtual environment and dependencies...'
+                sh '''
+                    # Create bot directory if it doesn't exist
+                    mkdir -p ${BOT_DIR}
+                    
+                    # Copy files to bot directory
+                    cp -r * ${BOT_DIR}/
+                    
+                    cd ${BOT_DIR}
+                    
+                    # Create virtual environment if it doesn't exist
+                    if [ ! -d "${VENV_DIR}" ]; then
+                        python3 -m venv ${VENV_DIR}
+                    fi
+                    
+                    # Install/update dependencies
+                    ${VENV_DIR}/bin/pip install -r requirements.txt
+                '''
+            }
+        }
+        
+        stage('Deploy') {
+            steps {
+                echo 'Restarting bot...'
+                sh '''
+                    # Kill existing bot process
+                    pkill -f "python.*bot.py" || true
+                    
+                    # Wait a moment
+                    sleep 2
+                    
+                    # Start bot in background
+                    cd ${BOT_DIR}
+                    nohup ${VENV_DIR}/bin/python bot.py > ${BOT_DIR}/bot.log 2>&1 &
+                    
+                    # Verify bot started
+                    sleep 3
+                    if pgrep -f "python.*bot.py" > /dev/null; then
+                        echo "Bot started successfully!"
+                    else
+                        echo "Failed to start bot. Check logs at ${BOT_DIR}/bot.log"
+                        exit 1
+                    fi
+                '''
+            }
+        }
+    }
+    
+    post {
+        success {
+            echo 'Deployment successful!'
+        }
+        failure {
+            echo 'Deployment failed!'
+        }
+    }
+}

main.py

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+import os
+import logging
+from telegram import Update
+from telegram.ext import Application, CommandHandler, MessageHandler, filters, ContextTypes
+
+# Enable logging
+logging.basicConfig(
+    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
+    level=logging.INFO
+)
+logger = logging.getLogger(__name__)
+
+# Bot token from environment variable
+TOKEN = os.getenv('TELEGRAM_BOT_TOKEN')
+
+async def start(update: Update, context: ContextTypes.DEFAULT_TYPE):
+    """Send a message when the command /start is issued."""
+    await update.message.reply_text(
+        'Hi! I am Fymious Bot. Send me any message and I will echo it back!'
+    )
+
+async def help_command(update: Update, context: ContextTypes.DEFAULT_TYPE):
+    """Send a message when the command /help is issued."""
+    await update.message.reply_text(
+        'Available commands:\n'
+        '/start - Start the bot\n'
+        '/help - Show this help message\n'
+        '\nJust send me any text and I will echo it back!'
+    )
+
+async def echo(update: Update, context: ContextTypes.DEFAULT_TYPE):
+    """Echo the user message."""
+    await update.message.reply_text(f"You said: {update.message.text}")
+
+def main():
+    """Start the bot."""
+    if not TOKEN:
+        logger.error("TELEGRAM_BOT_TOKEN environment variable not set!")
+        return
+    
+    # Create the Application
+    application = Application.builder().token(TOKEN).build()
+
+    # Register handlers
+    application.add_handler(CommandHandler("start", start))
+    application.add_handler(CommandHandler("help", help_command))
+    application.add_handler(MessageHandler(filters.TEXT & ~filters.COMMAND, echo))
+
+    # Start the Bot
+    logger.info("Bot is starting...")
+    application.run_polling(allowed_updates=Update.ALL_TYPES)
+
+if __name__ == '__main__':
+    main()

requirements.txt

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+python-telegram-bot==21.0