# Lightning Lottery Backend - Environment Configuration
# Copy this file to .env and fill in your values

# ======================
# Server Configuration
# ======================
PORT=3000
APP_BASE_URL=http://localhost:3000
FRONTEND_BASE_URL=http://localhost:3001
# Optional: comma-separated list to override allowed origins
# CORS_ALLOWED_ORIGINS=http://localhost:3001,https://app.yourdomain.com
NODE_ENV=development

# ======================
# Database Configuration
# ======================
# Database type: "postgres" or "sqlite"
DATABASE_TYPE=sqlite

# Database connection
# For PostgreSQL: postgresql://username:password@host:port/database
# For SQLite: ./data/lightning_lotto.db (relative path)
DATABASE_URL=./data/lightning_lotto.db

# PostgreSQL example:
# DATABASE_TYPE=postgres
# DATABASE_URL=postgresql://user:password@localhost:5432/lightning_lotto

# ======================
# LNbits Configuration
# ======================
# Your LNbits instance URL
LNBITS_API_BASE_URL=https://legend.lnbits.com

# LNbits admin/invoice key (required for creating invoices and payouts)
# Get this from your LNbits wallet settings
LNBITS_ADMIN_KEY=your_lnbits_admin_key_here

# Webhook secret for validating LNbits payment notifications
# Choose a random secret string
LNBITS_WEBHOOK_SECRET=your_webhook_secret_here

# ======================
# Security Configuration
# ======================
# Secret for signing JWT tokens (use a strong random string)
# Generate with: openssl rand -hex 32
JWT_SECRET=your_jwt_secret_here_change_in_production

# Admin API key for admin endpoints
# Generate with: openssl rand -hex 32
ADMIN_API_KEY=your_admin_api_key_here_change_in_production

# ======================
# Scheduler Configuration
# ======================
# How often to check for draws that need to be executed (in seconds)
DRAW_SCHEDULER_INTERVAL_SECONDS=60

# How often to generate future cycles (in seconds)
CYCLE_GENERATOR_INTERVAL_SECONDS=300

# ======================
# Lottery Configuration
# ======================
# Default ticket price in satoshis
DEFAULT_TICKET_PRICE_SATS=1000

# House fee percentage (0-100)
# Example: 5 means 5% fee, winner gets 95% of pot
DEFAULT_HOUSE_FEE_PERCENT=5

# Maximum Lightning payout attempts before drawing a new winner
PAYOUT_MAX_ATTEMPTS=2

# ======================
# Draw Cycle Configuration
# ======================
# Cycle type: "minutes" | "hourly" | "daily" | "weekly" | "custom"
CYCLE_TYPE=hourly

# ---- For MINUTES cycle ----
# Draw every X minutes (e.g., 30 = every 30 minutes)
CYCLE_INTERVAL_MINUTES=60

# ---- For HOURLY cycle ----
# Draw every X hours (e.g., 1 = every hour, 4 = every 4 hours)
CYCLE_INTERVAL_HOURS=1

# ---- For DAILY cycle ----
# Draw time in 24-hour format (HH:MM in UTC)
# Example: 18:00 = 6 PM UTC
CYCLE_DAILY_TIME=18:00

# ---- For WEEKLY cycle ----
# Day of week: 0=Sunday, 1=Monday, 2=Tuesday, 3=Wednesday, 4=Thursday, 5=Friday, 6=Saturday
CYCLE_WEEKLY_DAY=6
# Draw time in 24-hour format (HH:MM in UTC)
CYCLE_WEEKLY_TIME=20:00

# ---- For CUSTOM cycle (advanced) ----
# Cron expression for custom schedules
# Format: "minute hour day-of-month month day-of-week"
# Example: "0 */4 * * *" = every 4 hours
# Example: "0 20 * * 6" = every Saturday at 8 PM
# Example: "30 12,18 * * *" = 12:30 PM and 6:30 PM daily
CYCLE_CRON_EXPRESSION=0 * * * *

# ---- Sales Window ----
# How many minutes before the draw to stop accepting tickets
SALES_CLOSE_BEFORE_DRAW_MINUTES=5

# How many cycles to pre-generate in advance
CYCLES_TO_GENERATE_AHEAD=5

# ======================
# Notes
# ======================
# - SQLite is perfect for development and testing (no setup required!)
# - Use PostgreSQL for production deployments
# - Never commit the actual .env file to version control
# - Use strong, unique secrets in production
# - Keep your LNbits keys secure
# - Test with small amounts first