#include <avr/sleep.h>


float dampPotty;
float onTimePotty;
float solDampness;
void setup() {
  pinMode(2, INPUT);
  pinMode(A0, INPUT);
  pinMode(A2, INPUT);
  pinMode(A4, INPUT);
  pinMode(9, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(5, OUTPUT);
  Serial.begin(19200);
  digitalWrite(5 , HIGH);
  attachInterrupt(0, wakeUp, FALLING);
  Serial.println("https://git.sfs.ddnss.org/Erik/garden-watering-controller.git");


}

// the loop function runs over and over again forever
void loop() {
  Serial.println(digitalRead(2));
  delay(20);
  bedTimeYet();
  Serial.println("continuing Main");
  delay(100);
  Serial.println(calculateTargetDampness() , 4);
  Serial.println(calculatePumpOnTime() , 4);
  Serial.println(calculateDampness(), 4);
  pumpOffTime(1);
  wateringTheGarden();
}

float calculateTargetDampness() {
  dampPotty = analogRead(A2);
  return dampPotty / 454 ;
}

float calculatePumpOnTime() {
  onTimePotty = analogRead(A4);
  return (onTimePotty / 452) * 100;
}

float calculateDampness() {
  solDampness = analogRead(A0);
  return solDampness / 500;
}

void sleep() {
  digitalWrite(5, LOW);
  Serial.println("Going to sleep");
  delay(10);
  sleep_enable();
  //attachInterrupt(0, wakeUp, FALLING);
  set_sleep_mode(SLEEP_MODE_PWR_DOWN);
  delay(10);
  sleep_cpu();
}

void wakeUp() {
  // detachInterrupt(0);
  sleep_disable();
  Serial.println("woke up");
  afterWakeup();
}

void wait(long i) {
  // A finction for consistent delays (only one point to adjust delay when clock speed is lowerd)
  Serial.print("waiting for ");
  Serial.print(i);
  Serial.println(" milliseconds");
  delay(i);
}

void afterWakeup() {
  delay(100);
  digitalWrite(5, HIGH);
}

void pumpOffTime(int x) {
  for (int i = 0; i <= x * 6; i++) {
    wait(10000);
    bedTimeYet();
  }
}

void bedTimeYet() {
  if (digitalRead(2) == 1) {
    sleep();
  } else {
    Serial.println("Skipping sleep");
  }
}

void wateringTheGarden() {
  if (calculateTargetDampness() > calculateDampness()) {
    Serial.println("Watering");
    digitalWrite(7, HIGH);
    digitalWrite(9, HIGH);
    wait(calculatePumpOnTime() * 1000);
    digitalWrite(7, LOW);
    digitalWrite(9, LOW);
  } else {
    Serial.println("Wet enough");
  }
}