#ifndef H_MSG
#define H_MSG

#include "hosts.h"
#include <stdbool.h>
#include <stdint.h>

typedef struct {
  bool is_timed_out;
  uint8_t *data; // always in network byte order
  uint8_t len;
} packet;

// client msg requests: (ADD(x), SUB(x), MUL(x), GET)
//                    state += x, -= x, *= x,   returns state

struct msg {
  uint8_t msg_type; // 0 = request, 1 = preprepare, 2 = prepare, 3 = commit, 4 =
                    // response

  // request fields
  uint8_t req_message;   // 0 = add, 1 = sub, 2 = mul, 3 = get
  uint32_t option_value; // value for message.
  uint64_t timestamp;
  uint32_t client_index;

  // preprepare, prepare, commit, checkpoint fields
  uint32_t view;
  uint32_t seq;
  uint32_t digest;
  uint32_t server_index;
  uint32_t signature;
};

struct msg_log {
  struct msg_log *next;
  struct msg *m;
};

void append_msg(struct msg *m);

void discard_before_seq(uint32_t seq);

void clean_packet(packet *p);

struct msg *init_msg();

void clean_msg(struct msg *m);

void display_msg(struct msg *m);

struct msg *parse_packet_as_msg(packet *p);
packet *parse_msg_as_packet(struct msg *m);

void broadcast(struct host **conns, int num_conns, packet *data);
void send_to(struct host *conn, packet *data);

void send_to_replica(struct host **conns, int num_conns, int replica,
                     packet *data);

#endif