#include <Adafruit_NeoPixel.h>
#include <WiFi.h>
#include <WebServer.h>
#include <ArduinoJson.h>
#include "config.h"
#include "index.h"
#include "fonts.h"
#include "lowLevel.h"

#ifdef __AVR__
 #include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif

Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

TextNode text_nodes[MAX_TEXT_NODES_COUNT];

Cursor cursor;

void addNewTextNode
  (
    char text[TEXT_MAX_LENGTH + 1], uint32_t color = 0x00010101, unsigned short pos_x = 0, unsigned short pos_y = 0,
    unsigned char scroll_slowness = 1, bool is_scrolling = true, bool is_small = true
  )
{
  unsigned char text_length = strlen(text);
  if (text_length == 0){return;}
  for (unsigned char i = 0; i < MAX_TEXT_NODES_COUNT; i++)
  {
    if (text_nodes[i].is_deleted)
    {
      strncpy(text_nodes[i].content, text, TEXT_MAX_LENGTH);
      text_nodes[i].color = color;
      text_nodes[i].pos_x = (pos_x == 65535) ? PANEL_MAX_X + 1 : pos_x;
      text_nodes[i].pos_y = pos_y;
      text_nodes[i].characterSize.height = is_small ? SMALL_TEXT_HEIGHT : MEDIUM_TEXT_HEIGHT;
      text_nodes[i].characterSize.width = is_small ? SMALL_TEXT_WIDTH : MEDIUM_TEXT_WIDTH;
      text_nodes[i].character_count = text_length;
      text_nodes[i].scroll_slowness = scroll_slowness;
      text_nodes[i].is_scrolling = is_scrolling;
      text_nodes[i].is_deleted = false;
      break;
    }
  }
}

void drawTextNodes(bool reset_cursor = true)
{
  for (unsigned char i = 0; i < MAX_TEXT_NODES_COUNT; i++)
  {
    if (!text_nodes[i].is_deleted)
    {
      if (reset_cursor)
      {
        cursor.x = text_nodes[i].pos_x;
        cursor.y = text_nodes[i].pos_y;
 
      }

      for (unsigned char j = 0; j < text_nodes[i].character_count; j++)
      {
        char ch = text_nodes[i].content[j];
        if (ch < '!' || ch > '~')
        {
          ch = ' ';
        }

        drawCharacter(font7x5[ch - ' '], text_nodes[i].characterSize.height, text_nodes[i].characterSize.width, text_nodes[i].color, &cursor);
      }
    }
  }
}

void scrollAllScrollableTexts(split_scroll_mode = false)
{
  for (unsigned char i = 0; i < MAX_TEXT_NODES_COUNT; i++)
  {
    if (!text_nodes[i].is_deleted && text_nodes[i].is_scrolling)
    {
      short x1 = text_nodes[i].pos_x;
      short y1 = text_nodes[i].pos_y;
      short x2 = text_nodes[i].pos_x + text_nodes[i].characterSize.width * text_nodes[i].character_count + text_nodes[i].character_count - 1;
      short y2 = text_nodes[i].pos_y + text_nodes[i].characterSize.height - 1;
      if (split_scroll_mode || text_nodes[i].pos_y < 7)
      {
        if (x2 < 0)
        {
          text_nodes[i].is_deleted = true;
          continue;
        }
        shiftGivenRectangleLeft(x1, y1, x2, y2, text_nodes[i].scroll_slowness);
        text_nodes[i].pos_x -= text_nodes[i].scroll_slowness;
      }
      else
      {
        if (x1 > PANEL_MAX_X)
        {
          text_nodes[i].is_deleted = true;
          continue;
        }
        shiftGivenRectangleRight(x1, y1, x2, y2, text_nodes[i].scroll_slowness);
        text_nodes[i].pos_x += text_nodes[i].scroll_slowness;
      }
    }
  }
}

void setup()
{
  Serial.begin(115200);

  pixels.begin();
  pixels.clear();

  addNewTextNode("NET", 0xFF050505);
  addNewTextNode("AWAIT", 0xFF050505, 0, 9);
  drawTextNodes();
  
  pixels.show();
  start_server();
}

void loop()
{
  scrollAllScrollableTexts();
  pixels.show();
  handle_server();
}