Telegram ChatGPT bot on AWS Lambda

Build:

./gradlew clean build

Deploy to AWS Lambda:

./gradlew deploy

Environment variables:

AI_MODEL=gpt-3.5-turbo
OPENAI_API_KEY=sk-xxx
OPENAI_API_URL=https://api.openai.com/v1/chat/completions
ALLOWED_USERS=123456789
BOT_TOKEN=1234567890:xxx
BOT_URL=https://{api-id}.execute-api.{region}.amazonaws.com/{api-path}
BOT_USERNAME=@BotName
JAVA_TOOL_OPTIONS=-Dorg.slf4j.simpleLogger.defaultLogLevel=debug
DYNAMO_TABLE_NAME=chat-history
HISTORY_LENGTH=8
SESSION_MAX_LIFETIME=60

Create a Telegram bot: https://core.telegram.org/bots/features#botfather

Create AWS resources by CloudFormation template: cloudformation_template.yaml or manually

Register bot:

curl -X POST "https://api.telegram.org/bot{BOT_TOKEN}/setWebhook?url={BOT_URL}"