#pragma once

#include "driver/uart.h"
#include "esp_log.h"
#include "freertos/FreeRTOS.h"
#include "freertos/queue.h"
#include "freertos/task.h"
#include "pins.h"
#include "servergprs.h"

typedef struct {
  SemaphoreHandle_t done;
  char response[256];
  bool success;
} sim800_cmd_t;

typedef enum {
  MODEM_STATE_OFF = 0,
  MODEM_STATE_INIT,
  MODEM_STATE_READY,

  MODEM_STATE_REGISTERING,
  MODEM_STATE_REGISTERED,

  MODEM_STATE_SMS_READY,

  MODEM_STATE_CALL_ACTIVE,

  MODEM_STATE_GPRS_CONNECTING,
  MODEM_STATE_GPRS_UP,

  MODEM_STATE_TCP_CONNECTING,
  MODEM_STATE_TCP_CONNECTED,

  MODEM_STATE_ERROR
} modem_state_t;

typedef struct {
  modem_state_t state;

  bool in_call;
  bool gprs_active;
  bool need_gprs_restart;

  int signal;
  int network_registered;

  int last_rssi;
  int last_ber;

  bool tcp_connected;
  char tcp_host[64];
  int tcp_port;

  SemaphoreHandle_t state_mutex;
} modem_t;

typedef enum {
  EV_NONE = 0,

  EV_MODEM_OK,
  EV_MODEM_ERROR,

  EV_NETWORK_REG_OK,
  EV_NETWORK_LOST,

  EV_INCOMING_CALL,
  EV_CALL_ENDED,

  EV_SMS_RECEIVED,

  EV_GPRS_UP,
  EV_GPRS_DOWN
} modem_event_t;


void print_state();

void sim800_uart_init(void);

void modem_update_flags(void);

void modem_set_state(modem_state_t new_state);

void modem_handle_event(modem_event_t ev);

bool modem_start_gprs(void);

void sim800_csq_task(void *arg);

void sim800_task(void *arg);

void sim800_handle_line(char *line);

void sim800_parse(char *data);

void sim800_send(const char *cmd);

bool sim800_command(const char *cmd, uint32_t timeout_ms);

void init_modem(void *arg);

bool sim800_send_sms(const char *number, const char *msg);

bool sim800_call(const char *number);

bool sim800_hangup(void);

bool sim800_answer(void);

bool sim800_tcp_connect(const char *host, int port);

bool sim800_tcp_send(const void *data, int len);

bool sim800_tcp_close(void);