#include "report.h"
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>

char severity_names[][4] = {
  "GEN",
  "WRN",
  "ERR",
  "SEV",
  "DBG",
  "NIL"
};

int severity_levels[] = {
  1,
  2,
  4,
  8,
  16,
  32
};
int report_level = REPORT_NORMAL;

int report_count = 0;

void (*doReport)(const char *, ...) = NULL;

void report(int severity, const char *context, const char *message, ...) {
  if ((report_level & severity_levels[severity]) != severity_levels[severity]) {
    return;
  }
  va_list args;
  if (severity < 0 || severity >= NIL) severity = NIL;
  // TODO: if doReport != NULL, write to temp buffer, then pass
  if (doReport == NULL) {
    printf(">>%s>> %s: ", severity_names[severity], context);
    va_start(args, message);
    vfprintf(stdout, message, args);
    va_end(args);
    printf("\n");
  } else {
    char buf[128];
    char *buffer;
    int overflow;
    va_list args;
    
    buffer = buf;
    
    va_start(args, message);
    overflow = vsnprintf(buffer, 128, message, args);
    va_end(args);
    // did we overflow?
    if (overflow >= 128) {
      buffer = (char*)malloc(overflow+1);
      va_start(args, message);
      overflow = vsnprintf(buffer, overflow+1, message, args);
      va_end(args);
    }
    doReport(buffer);

    if (buffer != buf) {
      free(buffer);
    }
  }
}

int setReportLevel(int flags) {
  report_level = flags;
  return report_level;
}

int getReportLevel() {
  return report_level;
}