#include "dgram_mod_socket.h"
#include "shm_mm.h"
#include "usg_common.h"
#include "mm.h"



void server(int port, bool restart) {
  void * server_socket = dgram_mod_open_socket();

  if(restart) {
    dgram_mod_force_bind(server_socket, port);
  } else {
     dgram_mod_bind(server_socket, port);
  }
 
   
  dgram_mod_start_bus(server_socket);
}


void *run_recv(void *socket) {
  pthread_detach(pthread_self());
  void *recvbuf;
  int size;
  int port;
  while (dgram_mod_recvfrom( socket, &recvbuf, &size, &port) == 0) {
    printf("收到订阅消息:%s\n", recvbuf);
    free(recvbuf);
  }
  
}

void client(int port) {
  void *socket = dgram_mod_open_socket();
  pthread_t tid;
  pthread_create(&tid, NULL, run_recv, socket);
  int size;
  
  char action[512];
  char topic[512];
  char content[512];
  long i = 0;
  while (true) {
    //printf("Usage: pub <topic> [content] or sub <topic>\n");
    printf("Can I help you? sub, pub or quit\n");
    scanf("%s",action);
    
    if(strcmp(action, "sub") == 0) {
      printf("Please input topic!\n");
      scanf("%s", topic);
      dgram_mod_sub(socket, topic, strlen(topic),  port);
      printf("Sub success!\n");
    }
    else if(strcmp(action, "pub") == 0) {
      // printf("%s %s %s\n", action, topic, content);
      printf("Please input topic and content\n");
      scanf("%s %s", topic, content);
      dgram_mod_pub(socket, topic, strlen(topic)+1, content, strlen(content)+1,  port);
      printf("Pub success!\n");
    } else if(strcmp(action, "quit") == 0) {
      break;
    } else {
      printf("error input\n");
      continue;
    }
   
  }
  printf("(%d) quit\n", dgram_mod_get_port(socket));
  dgram_mod_close_socket(socket);
}

 

int main(int argc, char *argv[]) {
  shm_init(512);
  int port;
  if (argc < 3) {
    fprintf(stderr, "Usage: %s %s|%s <PORT> ...\n", argv[0], "server", "client");
    return 1;
  }

  port = atoi(argv[2]);

  if (strcmp("server", argv[1]) == 0) {
    if(argc >= 4 && strcmp("restart", argv[3]) == 0) {
      server(port, true);
    }
    else{
      server(port, false);
    }
    
  }

  if (strcmp("client", argv[1]) == 0)
    client(port);

  
  return 0;
}