// This #include statement was automatically added by the Particle IDE.
#include <neopixel.h>
#include "neopixel.h"
#include <math.h>

// IMPORTANT: DEFINE PINS & CONSTANTS
#define button1 D2
#define button2 D3
#define button3 D4
#define button4 D5
#define button5 D6
#define button6 D7
#define PIXEL_PIN D8
#define PIXEL_COUNT 17
#define PIXEL_TYPE WS2812
#define numBoxes 6
#define numLightInBoxes 3

int LIGHTEST = 100;
int pixel_position = 0;
int delaytime;
int buttonPin [] = {button1, button2, button3, button4, button5, button6};
int buttonState [] = {HIGH, HIGH, HIGH, HIGH, HIGH, HIGH};
//Initialize once to apply for all functions
int buttonState1; // variables to know if buttons are pressed
int buttonState2;
int buttonState3;
int buttonState4;
int buttonState5;
int buttonState6;

int nightStates[numBoxes] = {0,0,0,0,0,0}; // indicates which light should turn on at night - CHANGE WITH HOW MANY BOXES
long timeSincePress [] = {-1,-1,-1,-1,-1,-1}; 
Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, PIXEL_TYPE);

void setup(){

    Serial.begin(96000);

    pinMode(button1, INPUT_PULLUP); // sets pin as input
    pinMode(button2, INPUT_PULLUP); // sets pin as input
    pinMode(button3, INPUT_PULLUP); // sets pin as input
    pinMode(button4, INPUT_PULLUP); // sets pin as input
    pinMode(button5, INPUT_PULLUP); // sets pin as input
    pinMode(button6, INPUT_PULLUP); // sets pin as input
    
    strip.begin();
    strip.show(); // Initialize all pixels to 'off'
}

void loop(){

    nightStates[0] = 0; // start the day with all leds at night to turn off
    nightStates[1] = 0;
    nightStates[2] = 0;
    nightStates[3] = 0;
    nightStates[4] = 0;
    nightStates[5] = 0;
    dayOperations(); 
    nightOperations();
    
    delay(30000); // Duration of the night
    
}

void dayOperations(void) {
    
    unsigned long init = millis(); // time differences & setting to simulate sunrise to sunset
    unsigned long now = millis();
    int timeDel = 60000; // Duration of the day
    int timeDiff = now - init;
    Serial.println("day called: ");
    //Serial.println(init);
    
    // Initialize 3 blocks turn on in the morning 
    uint32_t b = strip.Color(160, 220, 255);
    for(int i=0; i < numBoxes; i++) { // 6 represents 6 blocks
        strip.setPixelColor((i*numLightInBoxes), b);
        strip.setPixelColor((i*numLightInBoxes + 1), b);
        strip.show();
    }
    
    // Simulates everything happening during the day
    while(timeDiff < timeDel) { // 1 minute
    
        // Dims the light one by one as day goes
        int value = map(timeDiff, 0, timeDel, 0, numBoxes);
        int gradientColor = map(timeDiff-value*(timeDel/numBoxes), 0, timeDel/numBoxes, 255, -1);
        
        uint32_t c = strip.Color(gradientColor*0.63, gradientColor*0.86, gradientColor);
        strip.setPixelColor((value*numLightInBoxes), c);
        strip.setPixelColor((value*numLightInBoxes + 1), c);
        strip.show();
        
        now = millis();
        timeDiff = now - init;
        //Serial.print(now);
        
        // Check that the current dimming block is pressed or not
        
        uint32_t orange = strip.Color(40, 30, 0); // orange
        uint32_t green = strip.Color(10, 40, 0); // green
        uint32_t d = strip.Color(0, 0, 0); //dark
        for(int i = 0; i <= value; i ++){
            int pressMode = checkButton(i);
            
            if(pressMode == 1){
                if(i == value){
                    Serial.println("1 in while");
                    strip.setPixelColor((i*numLightInBoxes), orange);
                    strip.setPixelColor((i*numLightInBoxes + 1), orange);
                    strip.show();
                    delay(500);
                }else{
                    strip.setPixelColor((i*numLightInBoxes), orange);
                    strip.setPixelColor((i*numLightInBoxes + 1), orange);
                    strip.show();
                }
            }
            else if(pressMode == 2){
                if(i == value){
                    strip.setPixelColor((i*numLightInBoxes), green);
                    strip.setPixelColor((i*numLightInBoxes + 1), green);
                    strip.show();
                    delay(500);
                }else{
                    strip.setPixelColor((i*numLightInBoxes), green);
                    strip.setPixelColor((i*numLightInBoxes + 1), green);
                    strip.show();
                    delay(500);
                    strip.setPixelColor((i*numLightInBoxes), d);
                    strip.setPixelColor((i*numLightInBoxes + 1), d);
                }
            }
            
            if(i < value && nightStates[i] == 1){
                strip.setPixelColor((i*numLightInBoxes), orange);
                strip.setPixelColor((i*numLightInBoxes + 1), orange);
                strip.show();
            }
        }
        
    }
}

void nightOperations(void) {
    
    // turn all the light dim first
    uint32_t c1 = strip.Color(0, 0, 0);
    for(int i = 0; i < numBoxes; i++){
        strip.setPixelColor((i*numLightInBoxes), c1);
        strip.setPixelColor((i*numLightInBoxes + 1), c1);
    }
    strip.show();
    
    
    // Decide which boxes to turn on at night
    uint32_t c2 = strip.Color(255, 165, 0); // Represents orange to turn on the whole night
    for(int i = 0; i < numBoxes; i++){
        if(nightStates[i] == 1){
            strip.setPixelColor((i*numLightInBoxes), c2);
            strip.setPixelColor((i*numLightInBoxes + 1), c2);
        }
    }
    strip.show();
}

int checkButton( int index ){
    Serial.println("checkButton going");
    int buttonReading = digitalRead( buttonPin[index] );
    
    // has changed from the last read
    if( buttonReading != buttonState[index] ){
        Serial.println("checkButton: state change");
        if( buttonReading == LOW && buttonState[index] == HIGH ){
            // recorded time when it was pressed. 
            timeSincePress[index] = millis();
            buttonState[index] = buttonReading;
        }
        
        if( buttonReading == HIGH && buttonState[index] == LOW ){
            long timeNow = millis();
            
            if( timeSincePress[index] + 2000 > timeNow  ){
                // it's been less than 2 seconds. this is a fast press
                nightStates[index] = 1;
                timeSincePress[index] = -1;
                buttonState[index] = buttonReading;
                Serial.println("1 returned in checkButton");
                return 1;
            }else{ 
                /// otherwise it's a long press
                nightStates[index] = 0; 
                timeSincePress[index] = -1;
                buttonState[index] = buttonReading;
                Serial.println("2 returned in checkButton");
                return 2;
            }
        }
        
    }
    return 0;
}