#include <string.h>
#include <stdlib.h>

#include "cmd.h"

char *getselector(char *str);
char **getparams(char *str, int *len);

struct cmd eval(char *str)
{
  struct cmd ret;
  ret.params = NULL;
  ret.selector = NULL;
  if (!strncmp(str, "GET", 3)) {
    ret.type = GET;
  } else if (!strncmp(str, "SET", 3)) {
    ret.type = SET;
  } else if (!strncmp(str, "DEL", 3)) {
    ret.type = DEL;
  } else {
    ret.type = ERR;
    return ret;
  }

  ret.selector = getselector(str);
  ret.params = getparams(str, &ret.plen);
  return ret;
}

char *getselector(char *str)
{
  char *selector = calloc(1, sizeof(char));
  int pos = 4, i;
  for (i = 0; str[pos] != '/' && pos < strlen(str); ++pos) {
    if (i >= 1) {
      selector = realloc(selector, (i + 1) * sizeof(char));
    }
    selector[i++] = str[pos];
  }
  selector = realloc(selector, (i + 1) * sizeof(char));
  selector[i] = '\0';
  return selector;
}

char **getparams(char *str, int *len)
{
  char **params = calloc(1, sizeof(char *));
  char *tok = strtok(str, "/");
  int i = 0;
  while ((tok = strtok(NULL, "/"))) {
    if (i >= 1)
      params = realloc(params, (i + 1) * sizeof(char *));
    params[i] = calloc(strlen(tok) + 1, sizeof(char));
    strcpy(params[i++], tok);
  }
  if (i == 0) {
    free(params);
    return NULL;
  }
  *len = i;
  return params;
}