#pragma once

#ifdef WITH_ETHERNET

#include <Arduino.h>
#include "INetworkManager.h"

// ENC28J60 SPI pin configuration for Heltec V3
// Using available GPIOs that don't conflict with LoRa SPI
#ifndef ETH_SPI_SCK
#define ETH_SPI_SCK   19   // GPIO19 - safe for external use
#endif
#ifndef ETH_SPI_MOSI
#define ETH_SPI_MOSI  20   // GPIO20 - safe for external use
#endif
#ifndef ETH_SPI_MISO
#define ETH_SPI_MISO  47   // GPIO47 - safe for external use
#endif
#ifndef ETH_SPI_CS
#define ETH_SPI_CS    48   // GPIO48 - safe for external use
#endif

// Configuration for Ethernet manager
struct EthernetConfig {
  uint8_t spi_sck;
  uint8_t spi_mosi;
  uint8_t spi_miso;
  uint8_t spi_cs;
  uint32_t connect_timeout_ms;
  uint32_t reconnect_interval_ms;
  bool use_dhcp;            // true = DHCP, false = static IP
  // Static IP config (only used if use_dhcp = false)
  uint32_t static_ip;
  uint32_t gateway;
  uint32_t subnet;
  uint32_t dns1;
  uint32_t dns2;
  // MAC address (if all zeros, generate from ESP32 chip ID)
  uint8_t mac[6];
};

class EthernetManager : public INetworkManager {
public:
  EthernetManager();

  // Initialize Ethernet with configuration
  void begin(const EthernetConfig& config);

  // INetworkManager interface
  void loop() override;
  void end() override;
  NetworkState getState() const override { return _state; }
  bool isConnected() const override { return _state == NetworkState::CONNECTED; }
  IPAddress getLocalIP() const override;
  String getMacAddress() const override;
  int32_t getRSSI() const override { return 0; }  // Wired = no RSSI
  const char* getConnectionName() const override { return "ENC28J60"; }
  void reconnect() override;
  uint32_t getConnectionUptime() const override;
  const char* getNetworkType() const override { return "Ethernet"; }

  // Ethernet-specific
  bool isLinkUp() const;

private:
  EthernetConfig _config;
  NetworkState _state;
  unsigned long _connect_start_time;
  unsigned long _last_connect_attempt;
  unsigned long _connected_since;
  bool _initialized;
  uint8_t _mac[6];

  void attemptConnection();
  void generateMacFromChipId();
};

#endif // WITH_ETHERNET