#include <array>
#include <cmath>

#include "App.hpp"
#include "Math.hpp"

#include <raylib.h>
#include <raymath.h>

void App::init(int screenWidth, int screenHeight)
{
  this->screenWidth = screenWidth;
  this->screenHeight = screenHeight;
  this->canvas.init(screenWidth);

  canvasTexure = LoadRenderTexture(screenWidth, screenWidth);
  manager.init();
  upTex(Liked::tbd);
  float posY = (screenHeight - screenWidth) / 2.0f;
  float recPosX = screenWidth * 0.2f;
  dest = {0, posY, (float)screenWidth, (float)screenWidth};
  disLikeBox = {0, posY, (float)recPosX, (float)screenWidth};
  likeBox = {screenWidth - recPosX, posY, (float)recPosX, (float)screenWidth};
}

void App::upTex(Liked liked)
{
  if (liked != Liked::tbd)
  {
    unit.liked = liked;
    manager.like(unit);
  }
  unit = manager.next();
  if (unit.dna != nullptr)
  {
    canvas.newGen(canvasTexure, unit.dna);
    return;
  }

  BeginTextureMode(canvasTexure);
  ClearBackground(WHITE);
  DrawText("NEXT GEN", 10, 10, 20, BLACK);
  EndTextureMode();
}

void App::update()
{
  bool isDone = canvas.tick(canvasTexure);
  if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT) && isDone)
  {
    Vector2 mouse = GetMousePosition();
    if (CheckCollisionPointRec(mouse, disLikeBox))
    {
      upTex(Liked::no);
    }
    if (CheckCollisionPointRec(mouse, likeBox))
    {
      upTex(Liked::yes);
    }
  }
}

void App::draw()
{
  ClearBackground(BLUE);

  Rectangle source = {0, 0, (float)canvasTexure.texture.width, (float)-canvasTexure.texture.height};
  Vector2 origin = {0.0f, 0.0f};
  DrawTexturePro(canvasTexure.texture, source, dest, origin, 0.0f, WHITE);

  const char *text = TextFormat("GEN %d: %d / %d", manager.generation, unit.index + 1, NUM_PER_GEN);
  DrawText(text, dest.x + 10, dest.y - 30, 20, BLACK);
}

void App::deinit()
{
  UnloadRenderTexture(canvasTexure);
  canvas.deinit();
  manager.deinit();
}