#include <raylib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "game_state.h"

#define WINDOW_HEIGHT 500
#define WINDOW_WIDTH 700
#define CHAR_SPACING 40

void process_key_events() {
  char buf[2] = {'c', '\0'};
  int k;
  const char *key_name;
  
  while ((k = GetKeyPressed()) != 0) {
    key_name = GetKeyName(k);
    
    char c = get_curr_letter();
    sprintf(buf, "%c\0", c);

    if (key_name != NULL &&
         strcmp(key_name, buf) == 0) {
      next();
    }
  }
}

void render_game_state() {
  char buf[2] = {'c', '\0'};
  char *curr_word = get_curr_word();
  int curr_letter_index = get_curr_letter_index();
  size_t word_len = strlen(curr_word);
  
  DrawText(curr_word, 10, 10, 20, BLACK);
    
  int x = (WINDOW_WIDTH / 2) - (CHAR_SPACING * (word_len / 2));
  int y = WINDOW_HEIGHT / 2;

  for (int i = 0; i < word_len; i++) {
    char c = curr_word[i];
      
    sprintf(buf, "%c\0", c);
      
    Color color;
    if (i == curr_letter_index) {
      color = GOLD;
    } else if (i < curr_letter_index) {
      color = DARKGRAY;
    } else {
      color = GRAY;
    }
		 
    DrawText(buf, x, y, 50, color);
    x += CHAR_SPACING;
  }

  char wins_text[20];
  snprintf(wins_text, 20, "%d wins", get_wins());
  DrawText(wins_text, WINDOW_WIDTH - 100, WINDOW_HEIGHT - 20, 20, GRAY);
}

int main(int argc, char *argv[]) {
  InitWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Typing game");
  
  init_game_state();
  
  while (!WindowShouldClose()) {
    process_key_events();
    
    BeginDrawing();
    ClearBackground(WHITE);

    render_game_state();
    
    DrawFPS(WINDOW_WIDTH - 100, 10); // top right

    EndDrawing();
  }
  
  CloseWindow();

  return 0;
}