#include <array>
#include <cmath>

#include "App.hpp"
#include "timing.hpp"

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

Font fontTtf;

void DrawTextB(const char *text, float posX, float posY, int fontSize, Color color)
{
  DrawTextEx(fontTtf, text, (Vector2){ posX, posY }, fontSize, 1, color);
}

void App::init(int screenWidth, int screenHeight)
{
  fontTtf = LoadFontEx("res/CascadiaCode.ttf", 32, 0, 0);
  SetTextLineSpacing(16);
  this->screenWidth = screenWidth;
  this->screenHeight = screenHeight;
  this->canvas.init(screenWidth);


  canvasTexure = LoadRenderTexture(screenWidth, screenWidth);

  DnaStore::load(&manager);
  upTex(Liked::tbd);
  while (!canvas.tick(canvasTexure))
  {
    // wait to finish drawing
  }

  float posY = (screenHeight - screenWidth) / 2.0f;

  destA = {0, posY, (float)screenWidth, (float)screenWidth};
}

void App::upTex(Liked liked)
{
  if (liked != Liked::tbd)
  {
    unit.liked = liked;
    bool ng = DnaManager::like(unit, &manager);

    if (ng)
    {
      DnaStore::saveGen(&manager);
      DnaManager::newGen(&manager);
      DnaStore::saveVec(&manager);
    }
    DnaStore::saveData(&manager);
  }
  unit = DnaManager::next(&manager);
  if (unit.dna != nullptr)
  {
    canvas.newGen(canvasTexure, unit.dna);
    return;
  }

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

void App::update(){}

enum class Rend_type{
  every_frame,
  in_one_frame,
  over_frames,
};

constexpr Rend_type rend_type = Rend_type::over_frames; 

void App::draw()
{
  if (IsMouseButtonReleased(MOUSE_BUTTON_LEFT))
  {
    TraceLog(LOG_INFO, "CLICK");
    upTex(Liked::yes);
    if constexpr (rend_type == Rend_type::in_one_frame){
      while (!canvas.tick(canvasTexure))
      {
        // wait to finish drawing
      }
    }
  }
  if constexpr (rend_type == Rend_type::over_frames){
    canvas.tick(canvasTexure);
  }
  ClearBackground(BLUE);

  int fps = GetFPS();
  const char* fpstext = TextFormat("%04d FPS", fps);
  DrawTextB(fpstext, 10, 10, 36, BLACK);
  const char* ctext = TextFormat("%04ld Circles", canvas.tree.circles);
  DrawTextB(ctext, 10, 50, 36, BLACK);
  
  Rectangle source = {0, 0, (float)screenWidth, (float)-screenWidth};
  Vector2 origin = {0.0f, 0.0f};
  if constexpr (rend_type == Rend_type::every_frame){
    canvas.newGen(canvasTexure, unit.dna);
    while (!canvas.tick(canvasTexure))
    {
      // wait to finish drawing
    }
  }
  DrawTexturePro(canvasTexure.texture, source, destA, origin, 360, WHITE);
}

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