#ifndef DORNE_TREE_H
#define DORNE_TREE_H

#ifndef __NCURSES_H
typedef struct _win_st WINDOW;
#endif /* __NCURSES_H */

#define NODE_CHILD_N 2

/* MACRO:
 * Get widnow node start x,y coordinates, width, & height.
 * void NODEDIMS(struct crs_node *node, struct crs_nodedims dims);
 */
#define GET_WNODEDIMS(dims, node)                                              \
  (getbegyx((node)->win, dims.y, dims.x));                                     \
  getmaxyx((node)->win, dims.y, dims.x)

enum crs_nodetype {
  NODE_WINDOW,
  NODE_ABSTRACT,
};

/* Stores a node's starting x,y coordinates, width, & height.
 * NOTE: Intended for interfunction communication.
 */
struct crs_nodedims {
  int x, y, width, height;
};

enum crs_axis {
  AXIS_X,
  AXIS_Y,
};

struct crs_node {
  enum crs_nodetype type;
  // union value depends on crs_node.type
  union {
    WINDOW *win;
    struct {
      enum crs_axis axis;
      float ratio;
      struct crs_nodedims *dims;
      struct crs_node *child[NODE_CHILD_N];
    };
  };
};

struct crs_tree {
  struct crs_node *root;
};

/* === External Interface === */
int ct_init(struct crs_tree **const tree);
void destroy_tree(struct crs_tree *const tree);
void resize_tree(struct crs_tree *const tree, struct crs_nodedims *const dims);
void ct_update(struct crs_tree *const tree);

void bifurcate_window_node(struct crs_node **const node,
                           const enum crs_axis axis, const int invert_axis,
                           const float ratio);

#endif /* DORNE_TREE_H */