// x-run: tcc -Wextra -Wall -run cbt.c
#ifndef _CBT_H_
#define _CBT_H_

#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>

extern int cbt_verbosity;
extern char *cbt_cc;

void cbt__init(int argc, char **argv);
#define CBT_INIT(ARGC, ARGV) cbt__init(ARGC, ARGV);

enum cbt_loglevel {
  CBT_LOG_FATAL,
  CBT_LOG_ERROR,
  CBT_LOG_WARNING,
  CBT_LOG_INFO,
  CBT_LOG_DEBUG,
  CBT_LOG_ALL
};

const extern char *cbt_log__colors[CBT_LOG_ALL + 1];
const extern char *cbt_log__typecolors[8];

void cbt_log(enum cbt_loglevel lvl, const char *fmt, ...);
unsigned long cbt_get_modtime(const char *filename);
bool cbt_needs_recompilation(const char *input, const char *output);


struct cbt_proc_args {
  char **items;
  size_t size, cap;
};

struct cbt_proc {
  FILE *fp_stdin, *fp_stdout, *fp_stderr;
#ifdef _WIN32
  HANDLE *handle;
#else
  int pid;
#endif
};

struct cbt_procgroup {
  struct cbt_proc *items;
  size_t size, cap;
};

#define CBT_ARRLEN(ARR) (sizeof(ARR)/sizeof(ARR[0]))

#ifndef CBT_REALLOC
#define CBT_REALLOC realloc
#endif

#define CBT_DA_INIT_SIZE 256

#define cbt_da_add(ARR, ITEM) {                                     \
  if (ARR.size >= ARR.cap) {                                        \
    size_t size = ARR.size == 0 ? CBT_DA_INIT_SIZE : ARR.size * 2;  \
    ARR.items = CBT_REALLOC(NULL, size);                            \
  }                                                                 \
  ARR.items[ARR.size] = (ITEM);                                     \
  ARR.size++;                                                       \
}

#endif

// Implementation
#ifdef CBT_IMPLEMENTATION

#include <stdlib.h>
#include <unistd.h>
int cbt_verbosity = 0;
char *cbt_cc = NULL;
const char *cbt_log__colors[CBT_LOG_ALL + 1] = {
  "\x1b[1;31m",
  "\x1b[31m",
  "\x1b[33m",
  "\x1b[32m",
  "\x1b[34m",
  "\x1b[35m"
};
const char *cbt_log__typecolors[8] = {
  /* int    */ "\x1b[31m",
  /* float  */ "\x1b[33m",
  /* char*  */ "\x1b[34m",
  /* void*  */ "\x1b[35m",
  /* bool   */ NULL,
  /*        */ "",
  /*        */ "",
  /*        */ "",
};


void cbt__init(int argc, char **argv) {
  cbt_cc = getenv("CC");
  if (!cbt_cc) cbt_cc = "cc";
  cbt_log(CBT_LOG_INFO, "omg hii hiiii hello %s", "world");
}

struct cbt_proc cbt_proc__open(void);

/*
 * Simplified version of printf, but with pretty colors depending on the type
 *
 * Supported format specifiers:
 *  %{len}d %{len}u     - signed and unsigned integer
 *  %(len}(.{len})f     - float/double
 *  %{len}s             - string
 *  %p                  - raw pointer
 */
void cbt_log(enum cbt_loglevel lvl, const char *fmt, ...) {
  const char *fmt_ptr = fmt;
  for (const char *fmt_ptr = fmt; *fmt_ptr != 0; fmt_ptr++) {
    if (*fmt_ptr != '%') {
      putchar(*fmt_ptr);
    } else {
      // todo
    }
  }
  putchar('\n');
}

#endif