#include "HardwareSerial.h"
#include "GLOBALS.h"
#include "window_manager.h"
#include <algorithm>

void WindowManager::init(TFT_Handler* th) {
  tft = th;
}

void WindowManager::create_window(Window window) {
  windows.push_back(window);
  draw_window(window);
}

void WindowManager::close_window(int window_id) {
  for (auto it = windows.begin(); it != windows.end(); ++it) {
    if (it->id == window_id) {
      windows.erase(it);
      break;
    }
  }
  draw_all();
}

void WindowManager::draw_all() {
  for (const auto& win : windows) {
    draw_window(win);
  }
}

void WindowManager::draw_window(Window window) {
  // Outer shadow
  //tft->draw_box(window.x, window.y, window.width + 2, window.height + 2, 0x0000);
  tft->draw_rect(window.x, window.y, window.width + 2, window.height + 2, 1, 0x0000);

  // Inner shadow
  tft->draw_rect(window.x, window.y, window.width + 1, window.height + 1, 1, 0x8410);

  // Highlight
  tft->draw_rect(window.x - 1, window.y - 1, window.width + 1, window.height + 1, 1, 0xffff);

  // Window
  tft->draw_box(window.x, window.y, window.width, window.height, window.background_color);

  // Decorations
  tft->draw_box(window.x + 3, window.y + 3, window.width - 6, 30, window.foreground_color);

  // Close button
  tft->draw_box(window.x + 6, window.y + 5, 25, 25, COL_RED);

  // Minimize button
  tft->draw_box(window.x + 6 + 30, window.y + 5, 25, 25, COL_LIGHT_GREY);

  // Window title
  tft->draw_text(window.x + 6 + 65, window.y + 10, window.title.c_str());

  // Window content
  tft->draw_box(window.x + 3, window.y + 30 + 5, window.width - 6, window.height - 7 - 30, COL_WHITE);
}

int WindowManager::click_event(CLICK_EVENT event) {
  int id = -1;
  
  if (event.event == CLICK_EVENTS::NONE) {
    return -1;
  }
    
  // Iterate BACKWARDS - last window is on top
  for (int i = windows.size() - 1; i >= 0; i--) {
    Window& window = windows[i];
    
    if (event.event != CLICK_EVENTS::LEFT_CLICK)
      continue;
      
    if (event.x >= window.x && event.x <= (window.x + window.width)) {
      
      if (event.y >= window.y && event.y <= (window.y + window.height)) {
        
        if (window.focused)
          break;
          
        // Unfocus all windows
        for (size_t j = 0; j < windows.size(); j++) {
          windows[j].focused = false;
        }
        
        // Focus this window
        window.focused = true;
        id = window.id;
        
        // Move window to end (top of z-order)
        auto it = windows.begin() + i;
        std::rotate(it, it + 1, windows.end());
      }
    }
  }
  
  return id;
}