# MEV Bot Development Configuration

# Arbitrum node configuration
arbitrum:
  # RPC endpoint for Arbitrum node (using public endpoint for development)
  rpc_endpoint: "https://arb1.arbitrum.io/rpc"
  # WebSocket endpoint for Arbitrum node - CRITICAL FIX: Use HTTP instead of WSS to avoid 403
  # The Chainstack WSS endpoint in .env returns 403 Forbidden
  # Using empty string will make bot use RPC endpoint for both HTTP and WS
  ws_endpoint: ""
  # Chain ID for Arbitrum (42161 for mainnet)
  chain_id: 42161
  # Rate limiting configuration for RPC endpoint
  # CRITICAL FIX: Reduced limits to prevent 429 errors on public endpoints
  rate_limit:
    # Maximum requests per second (reduced from 5 to 2 for public endpoint)
    requests_per_second: 2
    # Maximum concurrent requests (reduced from 3 to 1)
    max_concurrent: 1
    # Burst size for rate limiting (reduced from 10 to 3)
    burst: 3
  # Fallback RPC endpoints - Multiple endpoints for redundancy
  fallback_endpoints:
    - url: "https://arbitrum-rpc.publicnode.com"
      rate_limit:
        requests_per_second: 1
        max_concurrent: 1
        burst: 2
    - url: "https://1rpc.io/arb"
      rate_limit:
        requests_per_second: 1
        max_concurrent: 1
        burst: 2
    - url: "https://arbitrum.llamarpc.com"
      rate_limit:
        requests_per_second: 1
        max_concurrent: 1
        burst: 2

# Bot configuration
bot:
  # Enable or disable the bot
  enabled: true
  # Polling interval in seconds (reduced to lower RPC request rate)
  polling_interval: 5
  # Minimum profit threshold in USD
  min_profit_threshold: 5.0
  # Gas price multiplier (for faster transactions)
  gas_price_multiplier: 1.2
  # Maximum number of concurrent workers for processing (reduced from 5 to 3)
  max_workers: 3
  # Buffer size for channels
  channel_buffer_size: 50
  # Timeout for RPC calls in seconds (increased from 30 to 60 for better retry handling)
  rpc_timeout: 60

# Uniswap configuration
uniswap:
  # Factory contract address
  factory_address: "0x1F98431c8aD98523631AE4a59f267346ea31F984"
  # Position manager contract address
  position_manager_address: "0xC36442b4a4522E871399CD717aBDD847Ab11FE88"
  # Supported fee tiers
  fee_tiers:
    - 500    # 0.05%
    - 3000   # 0.3%
    - 10000  # 1%
  # Cache configuration for pool data
  cache:
    # Enable or disable caching
    enabled: true
    # Cache expiration time in seconds (increased from 300 to 600 to reduce RPC calls)
    expiration: 600
    # Maximum cache size (increased from 1000 to 2000)
    max_size: 2000

# Logging configuration
log:
  # Log level (debug, info, warn, error)
  level: "debug"
  # Log format (json, text)
  format: "text"
  # Log file path (empty for stdout)
  file: ""

# Database configuration
database:
  # Database file path
  file: "data/mev-bot.db"
  # Maximum number of open connections
  max_open_connections: 5
  # Maximum number of idle connections
  max_idle_connections: 2
# Arbitrage configuration
arbitrage:
  # Enable or disable arbitrage service
  enabled: true
  # Minimum profit threshold in USD
  min_profit: 1.0
  # Maximum position size in USD
  max_position_size: 1000.0
  # Gas price limit in gwei
  max_gas_price: 100
  # Minimum swap size to trigger arbitrage detection (in wei)
  min_significant_swap_size: 10000000000000000  # 0.01 ETH
  # Minimum scan amount (in wei) - CRITICAL FIX for amount=0 bug
  min_scan_amount_wei: 10000000000000000  # 0.01 ETH minimum
  # Maximum scan amount (in wei) - fits in int64 (max 9.2e18)
  max_scan_amount_wei: 9000000000000000000  # 9 ETH maximum (fits int64)