#ifndef LEMACS_EDITOR_H
#define LEMACS_EDITOR_H

#include <stdbool.h>
#include <stdint.h>

#include "core/buffer.h"

#define LEMACS_MAX_AUX_BUFFERS 8
#define LEMACS_MAX_VIEWS 16
#define LEMACS_MAX_BUFFERS 32

#define LEMACS_CURSOR_BAR 0
#define LEMACS_CURSOR_BLOCK 1
#define LEMACS_CURSOR_UNDERLINE 2

typedef struct {
  uint8_t r;
  uint8_t g;
  uint8_t b;
  uint8_t a;
} EditorColor;

typedef struct {
  int x;
  int y;
  int width;
  int height;
  int source_type;
  int source_index;
  bool show_cursor;
  EditorColor bg;
  EditorColor fg;
} EditorView;

typedef struct {
  Buffer buffers[LEMACS_MAX_BUFFERS];
  int buffer_count;
  int current_buffer;
  Buffer aux_buffers[LEMACS_MAX_AUX_BUFFERS];
  int aux_buffer_count;
  int desired_col;
  int scroll_line;
  char font_query[256];
  bool font_dirty;
  EditorView views[LEMACS_MAX_VIEWS];
  int view_count;
  EditorColor bg_top;
  EditorColor bg_bottom;
  EditorColor text;
  EditorColor cursor;
  int cursor_shape;
  int cursor_thickness;
  bool should_quit;
} Editor;

bool editor_init(Editor *editor);
void editor_free(Editor *editor);

void editor_set_font_query(Editor *editor, const char *query);
const char *editor_font_query(const Editor *editor);
bool editor_consume_font_dirty(Editor *editor);
bool editor_set_theme_color(Editor *editor, const char *name, int r, int g, int b, int a);
bool editor_set_cursor_shape(Editor *editor, int shape);
void editor_set_cursor_thickness(Editor *editor, int thickness);
int editor_cursor_shape(const Editor *editor);
int editor_cursor_thickness(const Editor *editor);

int editor_aux_buffer_new(Editor *editor);
bool editor_aux_buffer_set_text(Editor *editor, int aux_index, const char *text);
Buffer *editor_aux_buffer_get(Editor *editor, int aux_index);

void editor_layout_reset(Editor *editor);
bool editor_layout_add_view(Editor *editor, int source_type, int source_index, int x, int y, int width, int height, bool show_cursor, EditorColor bg, EditorColor fg);

void editor_move_left(Editor *editor);
void editor_move_right(Editor *editor);
void editor_move_up(Editor *editor);
void editor_move_down(Editor *editor);
void editor_move_beginning_of_line(Editor *editor);
void editor_move_end_of_line(Editor *editor);
void editor_set_point(Editor *editor, size_t point);
char editor_char_at(const Editor *editor, size_t index);

bool editor_open_file(Editor *editor, const char *path);
bool editor_save_file(Editor *editor, const char *path);
Buffer *editor_current_buffer(Editor *editor);
const Buffer *editor_current_buffer_const(const Editor *editor);
int editor_buffer_count(const Editor *editor);
int editor_current_buffer_index(const Editor *editor);
bool editor_switch_buffer(Editor *editor, int index);
int editor_new_buffer(Editor *editor);
const char *editor_buffer_path_at(const Editor *editor, int index);
bool editor_buffer_modified_at(const Editor *editor, int index);

#endif