# OpenAI API key for GPT-based chat assistant
# Required for AI chat functionality
OPENAI_API_KEY=sk-proj-your-key-here

# Port the server listens on
# Default: 3000
PORT=3000

# MongoDB connection URI
# Default: mongodb://localhost:27017/calchat
# The Docker Compose setup uses root:mongoose credentials with authSource=admin
MONGODB_URI=mongodb://root:mongoose@localhost:27017/calchat?authSource=admin

# Use static test responses instead of real GPT calls
# Values: true | false
# Default: false
USE_TEST_RESPONSES=false

# Log level for pino logger
# Values: debug | info | warn | error | fatal
# Default: debug (development), info (production)
LOG_LEVEL=debug

# Node environment
# Values: development | production
# development = pretty-printed logs, production = JSON logs
# Default: development
NODE_ENV=development