#pragma once

#include <Arduino.h>
#include <Mesh.h>
#include <RTClib.h>
#include <target.h>

#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
  #include <InternalFileSystem.h>
#elif defined(RP2040_PLATFORM)
  #include <LittleFS.h>
#elif defined(ESP32)
  #include <SPIFFS.h>
  #include "../../arch/esp32/CPUUsageTracker.h"
  using File = fs::File;
#endif

#ifdef WITH_RS232_BRIDGE
#include "helpers/bridges/RS232Bridge.h"
#define WITH_BRIDGE
#endif

#ifdef WITH_ESPNOW_BRIDGE
#include "helpers/bridges/ESPNowBridge.h"
#define WITH_BRIDGE
#endif

#ifdef WITH_MQTT_BRIDGE
#include "helpers/bridges/MQTTBridge.h"
#define WITH_BRIDGE
#endif

#ifdef WITH_MQTT_UPLINK
#include <helpers/mqtt/MQTTUplink.h>
#endif
#include <helpers/NetworkService.h>
#include <helpers/web/WebService.h>

#include <helpers/AdvertDataHelpers.h>
#include <helpers/ArchiveStorage.h>
#include <helpers/AdvertJail.h>
#include <helpers/ChannelBudget.h>

// Сколько отправителей помним в таблице лимита анонсов (24 байта на запись)
#ifndef ADVERT_JAIL_TABLE_SIZE
  #define ADVERT_JAIL_TABLE_SIZE 24
#endif
#include <helpers/ArduinoHelpers.h>
#include <helpers/ClientACL.h>
#include <helpers/CommonCLI.h>
#include <helpers/IdentityStore.h>
#include <helpers/SimpleMeshTables.h>
#include <helpers/StatsHistory.h>
#include <helpers/StaticPoolPacketManager.h>
#include <helpers/StatsFormatHelper.h>
#include <helpers/TxtDataHelpers.h>
#include <helpers/RegionMap.h>
#include <helpers/RoutingPolicy.h>
#include "RateLimiter.h"

#ifdef WITH_BRIDGE
extern AbstractBridge* bridge;
#endif

struct RepeaterStats {
  uint16_t batt_milli_volts;
  uint16_t curr_tx_queue_len;
  int16_t  noise_floor;
  int16_t  last_rssi;
  uint32_t n_packets_recv;
  uint32_t n_packets_sent;
  uint32_t total_air_time_secs;
  uint32_t total_up_time_secs;
  uint32_t n_sent_flood, n_sent_direct;
  uint32_t n_recv_flood, n_recv_direct;
  uint16_t err_events;                // was 'n_full_events'
  int16_t  last_snr;   // x 4
  uint16_t n_direct_dups, n_flood_dups;
  uint32_t total_rx_air_time_secs;
  uint32_t n_recv_errors;
};

struct WebSensorSnapshot {
  bool has_battery = false;
  uint16_t battery_mv = 0;

  bool has_supply_voltage = false;
  float supply_voltage_v = NAN;

  bool has_sensor_temp = false;
  float sensor_temp_c = NAN;

  bool has_mcu_temp = false;
  float mcu_temp_c = NAN;

  bool has_humidity = false;
  float humidity_pct = NAN;

  bool has_pressure = false;
  float pressure_hpa = NAN;

  bool has_pressure_altitude = false;
  float pressure_altitude_m = NAN;

  bool has_gps = false;
  bool gps_enabled = false;
  bool gps_fix = false;
  bool has_gps_lat = false;
  float gps_lat = NAN;
  bool has_gps_lon = false;
  float gps_lon = NAN;
  bool has_gps_altitude = false;
  float gps_altitude_m = NAN;
  bool has_satellites = false;
  long satellites = 0;
};

#ifndef MAX_CLIENTS
  #define MAX_CLIENTS           32
#endif

#define MAX_PATH_PREFIX_LEN  4
#define MAX_BLACKLIST_ENTRIES 64
#define MAX_CHAN_NAME_FILTERS 32

struct BlacklistEntry {
  uint8_t len;                          // 0 = empty slot
  uint8_t prefix[MAX_PATH_PREFIX_LEN];
};

struct ChanNameFilter {
  uint8_t hash[PATH_HASH_SIZE];
  uint8_t secret[PUB_KEY_SIZE];
  char    name[32];
};

struct NeighbourInfo {
  mesh::Identity id;
  uint32_t advert_timestamp;
  uint32_t heard_timestamp;
  int8_t snr; // multiplied by 4, user should divide to get float value
  char name[24];      // имя из анонса (обрезается), пусто = неизвестно
  float lat, lon;     // координаты из анонса
  uint8_t has_pos;    // 1 = координаты достоверны
};

#ifndef FIRMWARE_BUILD_DATE
  #define FIRMWARE_BUILD_DATE   "15 Oct 2026"
#endif

#ifndef FIRMWARE_VERSION
  #define FIRMWARE_VERSION   "v1.18.0"
#endif

#define FIRMWARE_ROLE "repeater"

#define PACKET_LOG_FILE  "/packet_log"

class MyMesh : public mesh::Mesh, public CommonCLICallbacks, public WebPanelCommandRunner {
  FILESYSTEM* _fs;
  ArchiveStorage* _archive;
  uint32_t last_millis;
  uint64_t uptime_millis;
  unsigned long next_archive_neighbours_flush_ms;
  unsigned long next_archive_recover_ms;
  unsigned long next_battery_sample_ms;
  unsigned long next_history_sample_ms;
  unsigned long next_local_advert, next_flood_advert;
  bool _logging;
  bool _archive_neighbours_dirty;
  bool _battery_sample_valid;
  uint16_t _battery_mv_cache;
  bool _web_sensor_snapshot_valid;
  WebSensorSnapshot _web_sensor_snapshot;
  NodePrefs _prefs;
  ClientACL  acl;
  CommonCLI _cli;
  uint8_t reply_data[MAX_PACKET_PAYLOAD];
  uint8_t reply_path[MAX_PATH_SIZE];
  uint8_t reply_path_len;
  TransportKeyStore key_store;
  RegionMap region_map, temp_map;
  RegionEntry* load_stack[8];
  RegionEntry* recv_pkt_region;
  TransportKey default_scope;
  RateLimiter discover_limiter, anon_limiter;
  uint32_t pending_discover_tag;
  unsigned long pending_discover_until;
  bool region_load_active;
  unsigned long dirty_contacts_expiry;
  BlacklistEntry _path_blacklist[MAX_BLACKLIST_ENTRIES];
  BlacklistEntry _chan_blacklist[MAX_BLACKLIST_ENTRIES];
  // Защита сети: таблица лимита анонсов и бюджет эфира на канал (около 1,6 КБ на ESP32)
#if defined(ESP32)
  AdvertJailEntry _advert_jail[ADVERT_JAIL_TABLE_SIZE];
  uint32_t _chan_budget[CHAN_BUDGET_CHANNELS];
#endif
  ChanNameFilter _chan_name_filters[MAX_CHAN_NAME_FILTERS];
  int _num_chan_name_filters;
#if MAX_NEIGHBOURS
  NeighbourInfo neighbours[MAX_NEIGHBOURS];
#endif
  CayenneLPP telemetry;
  unsigned long set_radio_at, revert_radio_at;
  float pending_freq;
  float pending_bw;
  uint8_t pending_sf;
  uint8_t pending_cr;
  int  matching_peer_indexes[MAX_CLIENTS];
#if defined(WITH_RS232_BRIDGE)
  RS232Bridge bridge;
#elif defined(WITH_ESPNOW_BRIDGE)
  ESPNowBridge bridge;
#elif defined(WITH_MQTT_BRIDGE)
  MQTTBridge bridge;
#endif
#ifdef WITH_MQTT_UPLINK
  MQTTUplink mqtt;
#endif
#if defined(ESP_PLATFORM)
  NetworkService network;
#endif
#if defined(ESP_PLATFORM) && WITH_WEB_PANEL
  WebService web;
#endif
#if defined(ESP32)
  CPUUsageTracker _cpu_tracker;
#endif
  StatsHistory _stats_history;
  struct {
    bool initialized;
    bool wifi_connected;
    bool mqtt_connected;
    bool web_panel_up;
    bool archive_mounted;
    bool low_memory;
    uint32_t mqtt_token_refresh_count;
    uint32_t last_low_memory_event_uptime_secs;
  } _stats_state;

  void putNeighbour(const mesh::Identity& id, uint32_t timestamp, float snr, const char* name = nullptr,
                    float lat = 0.0f, float lon = 0.0f, bool has_pos = false);
  size_t getNeighbourCount() const;
  void updateStatsHistory(unsigned long now_ms);
  void maybeRecoverArchive(unsigned long now_ms);
  bool restoreArchiveNeighbours();
  void flushArchiveNeighbours();
  void maybeFlushArchiveNeighbours(unsigned long now_ms);
  void recordStatsEvent(uint8_t type, int16_t value = 0);
  bool appendJsonEvents(char* reply, size_t reply_size, size_t& offset) const;
  bool appendJsonNeighbours(char* reply, size_t reply_size, size_t& offset) const;
  bool appendJsonSensors(char* reply, size_t reply_size, size_t& offset, const WebSensorSnapshot& snapshot) const;
  uint16_t getBatteryMilliVolts(bool force_refresh = false);
  uint8_t handleLoginReq(const mesh::Identity& sender, const uint8_t* secret, uint32_t sender_timestamp, const uint8_t* data, bool is_flood);
  uint8_t handleAnonRegionsReq(const mesh::Identity& sender, uint32_t sender_timestamp, const uint8_t* data);
  uint8_t handleAnonOwnerReq(const mesh::Identity& sender, uint32_t sender_timestamp, const uint8_t* data);
  uint8_t handleAnonClockReq(const mesh::Identity& sender, uint32_t sender_timestamp, const uint8_t* data);
  int handleRequest(ClientInfo* sender, uint32_t sender_timestamp, uint8_t* payload, size_t payload_len);
  mesh::Packet* createSelfAdvert();

  File openAppend(const char* fname);
  bool isLooped(const mesh::Packet* packet, const uint8_t max_counters[]);

  bool isPathBlacklisted(const mesh::Packet* packet) const;
  bool isChanBlacklisted(const mesh::Packet* packet) const;
  void loadBlacklist(const char* fname, BlacklistEntry* list);
  void saveBlacklist(const char* fname, const BlacklistEntry* list);
  bool addToBlacklist(BlacklistEntry* list, const uint8_t* prefix, uint8_t len);
  bool removeFromBlacklist(BlacklistEntry* list, const uint8_t* prefix, uint8_t len);
  void formatBlacklist(const BlacklistEntry* list, char* reply);
  void deriveChanNameFilter(ChanNameFilter& entry, const char* name);
  bool addChanNameFilter(const char* name);
  bool removeChanNameFilter(const char* name);
  void loadChanBlacklist(const char* fname);
  void saveChanBlacklist(const char* fname);
  void formatChanBlacklist(char* reply);

protected:
  float getAirtimeBudgetFactor() const override {
    return _prefs.airtime_factor;
  }

  bool allowPacketForward(const mesh::Packet* packet) override;
  const char* getLogDateTime() override;
  void logRxRaw(float snr, float rssi, const uint8_t raw[], int len) override;

  void logRx(mesh::Packet* pkt, int len, float score) override;
  void logTx(mesh::Packet* pkt, int len) override;
  void logTxFail(mesh::Packet* pkt, int len) override;
  int calcRxDelay(float score, uint32_t air_time) const override;

  uint32_t getRetransmitDelay(const mesh::Packet* packet) override;
  uint32_t getDirectRetransmitDelay(const mesh::Packet* packet) override;

  int getInterferenceThreshold() const override {
    return _prefs.interference_threshold;
  }
  bool getCADEnabled() const override {
    return _prefs.cad_enabled;
  }
  int getAGCResetInterval() const override {
    return ((int)_prefs.agc_reset_interval) * 4000;   // milliseconds
  }
  uint8_t getExtraAckTransmitCount() const override {
    return _prefs.multi_acks;
  }

#if ENV_INCLUDE_GPS == 1
  void applyGpsPrefs() {
    sensors.setSettingValue("gps", _prefs.gps_enabled?"1":"0");
  }
#endif

  mesh::DispatcherAction onRecvPacket(mesh::Packet* pkt) override;

  void onAnonDataRecv(mesh::Packet* packet, const uint8_t* secret, const mesh::Identity& sender, uint8_t* data, size_t len) override;
  int searchPeersByHash(const uint8_t* hash) override;
  void getPeerSharedSecret(uint8_t* dest_secret, int peer_idx) override;
  void onAdvertRecv(mesh::Packet* packet, const mesh::Identity& id, uint32_t timestamp, const uint8_t* app_data, size_t app_data_len);
  void onPeerDataRecv(mesh::Packet* packet, uint8_t type, int sender_idx, const uint8_t* secret, uint8_t* data, size_t len) override;
  bool onPeerPathRecv(mesh::Packet* packet, int sender_idx, const uint8_t* secret, uint8_t* path, uint8_t path_len, uint8_t extra_type, uint8_t* extra, uint8_t extra_len) override;
  void onControlDataRecv(mesh::Packet* packet) override;

  void sendFloodReply(mesh::Packet* packet, unsigned long delay_millis, uint8_t path_hash_size);

public:
  MyMesh(mesh::MainBoard& board, mesh::Radio& radio, mesh::MillisecondClock& ms, mesh::RNG& rng, mesh::RTCClock& rtc, mesh::MeshTables& tables);

  void begin(FILESYSTEM* fs, ArchiveStorage* archive = nullptr);
  void sendNodeDiscoverReq();
  const char* getFirmwareVer() override { return FIRMWARE_VERSION; }
  const char* getBuildDate() override { return FIRMWARE_BUILD_DATE; }
  const char* getRole() override { return FIRMWARE_ROLE; }
  const char* getNodeName() { return _prefs.node_name; }
  NodePrefs* getNodePrefs() {
    return &_prefs;
  }
  // Локальному мастеру настройки (UITask) нужен тот же обработчик команд, что и
  // последовательному порту: проверка значений и сохранение остаются в CommonCLI.
  CommonCLI& getCLI() { return _cli; }

  bool isHiddenNode() const {
    return _prefs.advert_interval == 0 && _prefs.flood_advert_interval == 0;
  }

  void savePrefs() override {
    _cli.savePrefs(_fs);
  }

  void sendFloodScoped(const TransportKey& scope, mesh::Packet* pkt, uint32_t delay_millis, uint8_t path_hash_size);

  // CommonCLICallbacks
  void applyTempRadioParams(float freq, float bw, uint8_t sf, uint8_t cr, int timeout_mins) override;
  bool formatFileSystem() override;
  void sendSelfAdvertisement(int delay_millis, bool flood) override;
  void updateAdvertTimer() override;
  void updateFloodAdvertTimer() override;

  void setLoggingOn(bool enable) override { _logging = enable; }

  void eraseLogFile() override {
    _fs->remove(PACKET_LOG_FILE);
  }

  void dumpLogFile() override;
  void setTxPower(int8_t power_dbm) override;
  void formatNeighborsReply(char *reply) override;
  void clearNeighbours() override;
  void removeNeighbor(const uint8_t* pubkey, int key_len) override;
  void formatStatsReply(char *reply, size_t reply_size) override;
  void formatRadioStatsReply(char *reply, size_t reply_size) override;
  void formatPacketStatsReply(char *reply, size_t reply_size) override;
  void formatMemoryReply(char *reply, size_t reply_size) override;
  bool purgeSdCard(char* reply, size_t reply_size);
  void prepareForOTAStart() override;
  void startRegionsLoad() override;
  bool saveRegions() override;
  void onDefaultRegionChanged(const RegionEntry* r) override;

  mesh::LocalIdentity& getSelfId() override { return self_id; }

  void saveIdentity(const mesh::LocalIdentity& new_id) override;
  void clearStats() override;

  void handleCommand(uint32_t sender_timestamp, char* command, char* reply);
  void runWebCommand(const char* command, char* reply, size_t reply_size) override;
  const char* getWebAdminPassword() const override { return _prefs.password; }
#if defined(ESP_PLATFORM) && WITH_WEB_PANEL
  bool installWebCertBundle(const char* pem, size_t len, char* err, size_t err_size) override {
    return web.installCertBundle(pem, len, err, err_size);
  }
#endif
  bool isWebStatsEnabled() const override;
  bool formatWebStatsSummaryJson(char* reply, size_t reply_size) override;
  bool formatWebStatsSeriesJson(const char* series, char* reply, size_t reply_size) override;
  void loop();

#if defined(WITH_BRIDGE)
  void setBridgeState(bool enable) override {
    if (enable == bridge.isRunning()) return;
    if (enable)
    {
      bridge.begin();
    }
    else 
    {
      bridge.end();
    }
  }

  void restartBridge() override {
    if (!bridge.isRunning()) return;
    bridge.end();
    bridge.begin();
  }
#endif

  // To check if there is pending work
  bool hasPendingWork() const;

  bool setRxBoostedGain(bool enable) override;

  #if defined(USE_LR2021)
  virtual bool configSideDetectors(const uint8_t sideDetSFs[], uint8_t num, float bw) override;
  #endif

};