# Switch Configuration for Mercury Device Middleware

import Config

# Switch System Configuration
config :da_product_app, :switch,
  # Feature toggles
  features: %{
    enhanced_message_handler: true,
    enhanced_routing: true,
    connection_pooling: true,
    circuit_breakers: true,
    performance_monitoring: true,
    security_logging: true
  },
  
  # Performance settings
  performance: %{
    max_concurrent_messages: 1000,
    message_processing_timeout_ms: 30_000,
    enable_async_processing: true,
    queue_max_size: 10_000
  },
  
  # Security settings
  security: %{
    enable_audit_logging: true,
    mask_sensitive_data: true,
    max_connection_rate: 100,  # per minute
    enable_rate_limiting: true
  },
  
  # Monitoring and alerting
  monitoring: %{
    enable_metrics: true,
    metrics_interval_ms: 60_000,
    enable_health_checks: true,
    health_check_interval_ms: 30_000,
    enable_alerts: true
  }

# Message Handler Configuration
config :da_product_app, :switch_message_handler,
  # Handler selection: :iso8583b (enhanced), :legacy, :auto
  handler: :iso8583b,  # Use modern comprehensive implementation
  
  # Fallback configuration
  enable_fallback: false,  # No need for legacy fallback anymore
  fallback_handler: nil,
  
  # Performance settings
  timeout_ms: 30_000,
  max_message_size: 8192,
  
  # Validation settings
  strict_validation: false,
  enable_business_rules: true,
  
  # TPDU configuration
  tpdu: %{
    enabled: true,
    patterns: [
      %{
        pattern: <<0x60, 0x00, 0x78, 0x20, 0x00>>,
        length: 5,
        description: "Mercury Device TPDU"
      },
      %{
        pattern: <<0x60, 0x00, 0x78, 0x00, 0x00>>,
        length: 5,
        description: "Alternative Mercury TPDU"
      }
    ]
  },
  
  # Error handling
  error_handling: %{
    max_parse_retries: 3,
    enable_error_recovery: true,
    log_parse_errors: true,
    create_error_responses: true
  }

# Protocol Handler Configuration
config :da_product_app, :switch_protocol,
  # Connection settings
  tcp: %{
    port: 8583,
    max_connections: 100,
    timeout_ms: 30_000,
    socket_options: [
      {:active, :once},
      {:packet, :raw},
      {:reuseaddr, true},
      {:nodelay, true}
    ]
  },
  
  # SSL/TLS settings
  ssl: %{
    enabled: false,
    port: 8584,
    certfile: nil,
    keyfile: nil,
    cacertfile: nil,
    verify: :verify_peer
  },
  
  # Message processing
  processing: %{
    buffer_size: 16384,
    max_buffer_size: 65536,
    message_framing: :length_header,
    enable_keepalive: true
  },
  
  # Logging and monitoring
  logging: %{
    log_connections: true,
    log_raw_data: false,  # Set to true for debugging
    log_message_flow: true,
    log_performance: true
  }

# Routing Configuration
config :da_product_app, :switch_routing,
  # Router selection: :enhanced, :legacy
  router: :enhanced,
  
  # Routing strategies
  strategies: [
    :processing_code,
    :card_type,
    :bin_range,
    :merchant_config,
    :default
  ],
  
  # Load balancing
  load_balancing: %{
    enabled: true,
    strategy: :round_robin,
    health_check_interval: 30_000
  },
  
  # Failover configuration
  failover: %{
    enabled: true,
    max_retries: 3,
    retry_delay_ms: 1000,
    circuit_breaker: %{
      enabled: true,
      failure_threshold: 5,
      timeout_ms: 60_000
    }
  },
  
  # BIN range routing (for enhanced router)
  bin_routing: %{
    enabled: true,
    ranges: %{
      "411111" => %{connector: :visa, priority: 1},
      "555555" => %{connector: :mastercard, priority: 1},
      "378282" => %{connector: :amex, priority: 1},
      "6011" => %{connector: :discover, priority: 1}
    }
  }

# Connector Configuration
config :da_product_app, :switch_connectors,
  # Connection pooling
  pool: %{
    size: 10,
    max_overflow: 20,
    timeout_ms: 30_000,
    checkout_timeout_ms: 5_000
  },
  
  # Connector-specific settings
  visa: %{
    enabled: true,
    host: "visa.gateway.example.com",
    port: 8583,
    ssl: false,
    timeout_ms: 30_000,
    max_retries: 3
  },
  
  mastercard: %{
    enabled: true,
    host: "mc.gateway.example.com", 
    port: 8583,
    ssl: false,
    timeout_ms: 30_000,
    max_retries: 3
  },
  
  master: %{
    enabled: true,
    host: "master.processor.example.com",
    port: 8583,
    ssl: false,
    timeout_ms: 30_000,
    max_retries: 3
  },
  
  fallback: %{
    enabled: true,
    default_response_code: "96",
    enable_logging: true
  }

# ISO8583B TPDU Configuration (for enhanced handler)
config :da_product_app, :iso8583b_tpdu,
  patterns: [
    %{
      pattern: <<0x60, 0x00, 0x78, 0x20, 0x00>>,
      length: 5,
      description: "Mercury Device TPDU"
    },
    %{
      pattern: <<0x60, 0x00, 0x78, 0x00, 0x00>>,
      length: 5,
      description: "Alternative Mercury TPDU"
    }
  ]

# Environment-specific overrides
import_config "#{config_env()}.exs"