#pragma once

#include <array>
#include <cstdint>
#include <functional>
#include <string>
#include <string_view>
#include <vector>

#include "gateway_cache.hpp"
#include "esp_err.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"

namespace gateway {

class DaliDomainService;
struct DaliRawFrame;
class GatewayRuntime;

struct GatewayControllerConfig {
  uint32_t task_stack_size{6144};
  UBaseType_t task_priority{5};
  int color_temperature_min{2000};
  int color_temperature_max{6500};
  bool setup_supported{true};
  bool ble_supported{false};
  bool wifi_supported{true};
  bool ip_router_supported{true};
  bool internal_scene_supported{true};
  bool internal_group_supported{true};
};

struct GatewayChannelSnapshot {
  uint8_t channel_index{0};
  uint8_t gateway_id{0};
  std::string name;
  std::string phy;
  uint8_t scene_mask_low{0};
  uint8_t scene_mask_high{0};
  uint8_t group_mask_low{0};
  uint8_t group_mask_high{0};
  bool allocating{false};
  int last_alloc_addr{0};
};

struct GatewayControllerSnapshot {
  bool setup_mode{false};
  bool wireless_setup_mode{false};
  bool ble_enabled{false};
  bool wifi_enabled{false};
  bool ip_router_enabled{false};
  bool internal_scene_supported{false};
  bool internal_group_supported{false};
  std::vector<GatewayChannelSnapshot> channels;
};

class GatewayController {
 public:
  using NotificationSink = std::function<void(const std::vector<uint8_t>& frame)>;
  using BleStateSink = std::function<void(bool enabled)>;
  using WifiStateSink = std::function<void(uint8_t mode)>;
  using GatewayNameSink = std::function<void(uint8_t gateway_id)>;

  GatewayController(GatewayRuntime& runtime, DaliDomainService& dali_domain,
                      GatewayCache& cache,
                    GatewayControllerConfig config = {});
  ~GatewayController();

  esp_err_t start();
  bool enqueueCommandFrame(const std::vector<uint8_t>& frame);
  void addNotificationSink(NotificationSink sink);
  void addBleStateSink(BleStateSink sink);
  void addWifiStateSink(WifiStateSink sink);
  void addGatewayNameSink(GatewayNameSink sink);

  bool setupMode() const;
  bool wirelessSetupMode() const;
  void setWirelessSetupMode(bool enabled);
  bool bleEnabled() const;
  bool wifiEnabled() const;
  bool ipRouterEnabled() const;
  GatewayControllerSnapshot snapshot();

 private:
  static void TaskEntry(void* arg);
  void taskLoop();
  void dispatchCommand(const std::vector<uint8_t>& command);

  bool hasGateway(uint8_t gateway_id) const;
  std::vector<uint8_t> gatewayIds() const;
  std::string gatewayName(uint8_t gateway_id) const;
  void refreshRuntimeGatewayNames();
  void publishPayload(uint8_t gateway_id, const std::vector<uint8_t>& payload);
  void publishFrame(const std::vector<uint8_t>& frame);
  void handleDaliRawFrame(const DaliRawFrame& frame);

  uint8_t resolveInternalGroupRawAddress(uint8_t gateway_id, uint8_t raw_addr);
  static uint8_t normalizeGroupTargetType(uint8_t target_type);
  static uint8_t normalizeGroupTargetValue(uint8_t target_type, uint8_t target_value);
  static uint8_t internalGroupRawTargetAddress(uint8_t target_type, uint8_t target_value,
                                               uint8_t raw_addr);
  static int internalGroupDecTargetAddress(uint8_t target_type, uint8_t target_value);
  static int shortAddressFromRaw(uint8_t raw_addr);
  static int reverseInRange(int value, int min_value, int max_value);

  bool setSceneEnabled(uint8_t gateway_id, uint8_t scene_id, bool enabled);
  bool setSceneDetail(uint8_t gateway_id, uint8_t scene_id, uint8_t brightness,
                      uint8_t color_mode, uint8_t data1, uint8_t data2, uint8_t data3);
  bool setSceneName(uint8_t gateway_id, uint8_t scene_id, std::string_view name);
  bool deleteScene(uint8_t gateway_id, uint8_t scene_id);
  std::pair<uint8_t, uint8_t> sceneMask(uint8_t gateway_id);
  bool executeScene(uint8_t gateway_id, int short_address, uint8_t scene_id);

  bool setGroupEnabled(uint8_t gateway_id, uint8_t group_id, bool enabled);
  bool setGroupDetail(uint8_t gateway_id, uint8_t group_id, uint8_t target_type,
                      uint8_t target_value);
  bool setGroupName(uint8_t gateway_id, uint8_t group_id, std::string_view name);
  bool deleteGroup(uint8_t gateway_id, uint8_t group_id);
  std::pair<uint8_t, uint8_t> groupMask(uint8_t gateway_id);
  bool executeGroup(uint8_t gateway_id, uint8_t group_id);

  void handleGatewayNameCommand(uint8_t gateway_id, const std::vector<uint8_t>& command);
  void handleGatewayIdentityCommand(uint8_t gateway_id, uint8_t op);
  void handleAllocationCommand(uint8_t gateway_id, const std::vector<uint8_t>& command);
  void handleInternalSceneCommand(uint8_t gateway_id, const std::vector<uint8_t>& command);
  void handleInternalGroupCommand(uint8_t gateway_id, const std::vector<uint8_t>& command);

  GatewayRuntime& runtime_;
  DaliDomainService& dali_domain_;
  GatewayCache& cache_;
  GatewayControllerConfig config_;
  TaskHandle_t task_handle_{nullptr};
  std::vector<NotificationSink> notification_sinks_;
  std::vector<BleStateSink> ble_state_sinks_;
  std::vector<WifiStateSink> wifi_state_sinks_;
  std::vector<GatewayNameSink> gateway_name_sinks_;
  bool setup_mode_{false};
  bool wireless_setup_mode_{false};
  bool ble_enabled_{false};
  bool wifi_enabled_{false};
  bool ip_router_enabled_{true};
};

}  // namespace gateway