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

#include "dims.h"
#include "node.h"
#include "util.h"

struct ct_dims *new_dims(const int x, const int y, const int width, const int height) {
  struct ct_dims *dims;

  dims = (struct ct_dims *)malloc(sizeof(struct ct_dims));
  *dims = (struct ct_dims){
      .x = x,
      .y = y,
      .width = width,
      .height = height,
  };
  return dims;
}

struct ct_dims *dup_dims(const struct ct_dims *const dims) {
  struct ct_dims *dup;
  dup = (struct ct_dims *)malloc(sizeof(struct ct_dims));
  memcpy(dup, dims, sizeof(struct ct_dims));

  return dup;
}

static struct ct_bounds *__bounds(const enum ct_boundtype type, const int wmin,
                                  const int wmax, const int hmin,
                                  const int hmax) {
  struct ct_bounds *bounds;

  bounds = (struct ct_bounds *)malloc(sizeof(struct ct_bounds));
  *bounds = (struct ct_bounds){
      .type = type,
      .wmin = wmin,
      .wmax = wmax,
      .hmin = hmin,
      .hmax = hmax,
  };
  return bounds;
}

static inline void __clamp(int *const val, const int min, const int max,
                         const int do_ceiling) {
  if (*val == __BOUND_UNLIMITED)
    *val = do_ceiling ? max : min;
  else
    *val = clampi(*val, min, max);
}
#define CLAMP_ABS(val, is_max)                                                 \
  (__clamp(&val, __BOUND_ABS_MIN, __BOUND_ABS_MAX, is_max))
#define CLAMP_REL(val, is_max)                                                 \
  (__clamp(&val, __BOUND_REL_MIN, __BOUND_REL_MAX, is_max))

struct ct_bounds *bounds_none(void) {
  return __bounds(BOUND_NONE, __BOUND_ABS_MIN, __BOUND_ABS_MAX, __BOUND_ABS_MIN,
                  __BOUND_ABS_MAX);
}

struct ct_bounds *bounds_absolute(int wmin, int wmax,
                                  int hmin, int hmax) {
  CLAMP_ABS(wmin, false);
  CLAMP_ABS(wmax, true);
  CLAMP_ABS(hmin, false);
  CLAMP_ABS(hmax, true);
  return __bounds(BOUND_ABSOLUTE, wmin, wmax, hmin, hmax);
}

struct ct_bounds *bounds_relative(int wmin, int wmax,
                                  int hmin, int hmax) {
  CLAMP_REL(wmin, false);
  CLAMP_REL(wmax, true);
  CLAMP_REL(hmin, false);
  CLAMP_REL(hmax, true);
  return __bounds(BOUND_RELATIVE, wmin, wmax, hmin, hmax);
}

struct ct_bounds *dup_bounds(const struct ct_bounds *const bounds) {
  struct ct_bounds *dup;
  dup = (struct ct_bounds *)malloc(sizeof(struct ct_bounds));
  memcpy(dup, bounds, sizeof(struct ct_bounds));

  return dup;
}