#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include "ds1307.h"
#include "encoder.h"


// ----- OLED ----------
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

#define NUMFLAKES     10 // Number of snowflakes in the animation example

#define LOGO_HEIGHT   16
#define LOGO_WIDTH    16

// menu
uint8_t _currentDashboard = 1;
uint8_t _menuShow = 0;



void dashboardClock(void){

  display.clearDisplay();
  // display.setCursor(10,2);
  // display.setTextSize(1);
  // display.print(getWeek(tm.wday));    

  display.setCursor(15,25);    
  display.setTextSize(3);
  display.setTextColor(SSD1306_WHITE);
  display.print(clockToStringFromDigit(tm.hours) + ":" + clockToStringFromDigit(tm.minutes));
  display.setTextSize(1);
  display.print(clockToStringFromDigit(tm.seconds));

  display.setCursor(3,53);    
  display.setTextSize(1);
  display.print(getWeek(tm.wday));  
  display.print(" "); 
  display.print(clockToStringFromDigit(tm.mday) + "." + clockToStringFromDigit(tm.month) + ".20" + clockToStringFromDigit(tm.year));

  display.display();
}

void dashboardTemp(){
  display.clearDisplay();

  display.setCursor(0,0);
  display.setTextSize(2);
  display.setTextColor(SSD1306_WHITE);
  display.println("dat1 = 20 C");
  display.println("dat2 = 30 C");
  display.println("dat3 = 10 C");

  display.display();
}

void currentDashboard(){
  if(_menuShow == 1){
    return;
  }

  if(encoderCounter > encoderDefaultCounter){
    _currentDashboard ++;
    encoderCounter = encoderDefaultCounter;
  }else if(encoderCounter < encoderDefaultCounter){
    _currentDashboard --;
    encoderCounter = encoderDefaultCounter;
  }

  if(_currentDashboard < 1){
    _currentDashboard = 1;
  }

  if(_currentDashboard > 2){
    _currentDashboard = 2;
  }

  if(_currentDashboard == 1){
    dashboardClock();
  }else if(_currentDashboard == 2){
    dashboardTemp();
  }


}



void setup() {
  Serial.begin(9600);
  Serial.println(F("setup"));

Wire.begin();
delay(100); // Pause for 2 seconds

beginDS1307();
beginEncoder();

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }
  
  display.clearDisplay();
  // Show initial display buffer contents on the screen --
  // the library initializes this with an Adafruit splash screen.
  display.display();
  delay(2000); // Pause for 2 seconds
}

void testdrawline() {
  int16_t i;

  display.clearDisplay(); // Clear display buffer

  for(i=0; i<display.width(); i+=4) {
    display.drawLine(0, 0, i, display.height()-1, SSD1306_WHITE);
    display.display(); // Update screen with each newly-drawn line
    delay(1);
  }
  for(i=0; i<display.height(); i+=4) {
    display.drawLine(0, 0, display.width()-1, i, SSD1306_WHITE);
    display.display();
    delay(1);
  }
  delay(250);

  display.clearDisplay();

  for(i=0; i<display.width(); i+=4) {
    display.drawLine(0, display.height()-1, i, 0, SSD1306_WHITE);
    display.display();
    delay(1);
  }
  for(i=display.height()-1; i>=0; i-=4) {
    display.drawLine(0, display.height()-1, display.width()-1, i, SSD1306_WHITE);
    display.display();
    delay(1);
  }
  delay(250);

  display.clearDisplay();

  for(i=display.width()-1; i>=0; i-=4) {
    display.drawLine(display.width()-1, display.height()-1, i, 0, SSD1306_WHITE);
    display.display();
    delay(1);
  }
  for(i=display.height()-1; i>=0; i-=4) {
    display.drawLine(display.width()-1, display.height()-1, 0, i, SSD1306_WHITE);
    display.display();
    delay(1);
  }
  delay(250);

  display.clearDisplay();

  for(i=0; i<display.height(); i+=4) {
    display.drawLine(display.width()-1, 0, 0, i, SSD1306_WHITE);
    display.display();
    delay(1);
  }
  for(i=0; i<display.width(); i+=4) {
    display.drawLine(display.width()-1, 0, i, display.height()-1, SSD1306_WHITE);
    display.display();
    delay(1);
  }

  delay(2000); // Pause for 2 seconds
}

void testdrawstyles(void) {
  display.clearDisplay();

  display.setTextSize(1);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(0,0);             // Start at top-left corner
  display.println(F("Hello, world!"));

  display.setTextColor(SSD1306_BLACK, SSD1306_WHITE); // Draw 'inverse' text
  display.println(3.141592);

  display.setTextSize(2);             // Draw 2X-scale text
  display.setTextColor(SSD1306_WHITE);
  display.print(F("0x")); display.println(0xDEADBEEF, HEX);

  display.setTextSize(4);             // Draw 2X-scale text
  display.setTextColor(SSD1306_WHITE);
  display.print(F("4x")); 


  display.display();
  delay(4000);
}




void loop() {
  static uint32_t rebootTimerC = millis();
  static uint32_t rebootTimer = millis();
  
  readEncoder();

  
  if(millis() - rebootTimer >= 500){
    rebootTimer = millis();
    // --------


    readDS1307();
  }


  if(millis() - rebootTimerC >= 500){
    rebootTimerC = millis();
    currentDashboard();

    // --------
    Serial.println("Encoder " + String((uint16_t)encoderCounter));
   // Serial.println("Encoder SW" + String((bool)encoderSw));
    // Serial.println("clock " + String((uint8_t)tm.hours) + ":" + String((uint8_t)tm.minutes) + ":" + String((uint8_t)tm.seconds));
    // Serial.println("clock " + String((uint8_t)tm.wday)); // tm.wday, tm.mday, tm.month, tm.year
    // Serial.println("clock " + String((uint8_t)tm.mday) + "-" + String((uint8_t)tm.month) + "-" + String((uint8_t)tm.year));
  }


  // long newPosition = encoder.getCount() / 2;
  // Serial.println(newPosition);
  //testdrawstyles();
  //testdrawline();
  // beginDS1307();
  if(encoderSw){
    Serial.println("Encoder SW click");
  }
  
  // delay(2000); // Pause for 2 seconds

  resetEncoderBtn();
}