// Aubergine electrique farcie aux de puces 1.0
// Aubergine Plug is a plug to switch on and off objects that are plug in it.
#define SWITCH 5
typedef struct type_plug { 
  unsigned int switch_pin;
  unsigned int pot_pin;
  unsigned int triac_pin;
  boolean switch_val;
  unsigned int pot_val;
  unsigned long currentMillis;
  unsigned long previousMillis;
  unsigned long interval;
  boolean triacState;
  unsigned int master; 
};
unsigned int switch_sum = 0;
unsigned long masterCurrentMillis = 0;
unsigned long masterPreviousMillis = 0;
unsigned long masterTempo = 2000;
boolean masterTriacState = 0;
type_plug plug[SWITCH] = {
  {2, 0, 7, 0, 0, 0, 0, 0, 0, 0},
  {3, 1, 8, 0, 0, 0, 0, 0, 0, 0},
  {4, 2, 9, 0, 0, 0, 0, 0, 0, 0},
  {5, 3, 10, 0, 0, 0, 0, 0, 0, 0},
  {6, 4, 11, 0, 0, 0, 0, 0, 0, 0},
};
boolean DEBUG_pot = false;         // print pot val to the serial port
boolean DEBUG_switch = false;      // print switch val to the serial port
boolean DEBUG_triac = false;       // print triac val to the serial port
void setup(){
  if(DEBUG_pot || DEBUG_switch || DEBUG_triac) Serial.begin(9600);  // set the boad rate of the communication ligne
  for(int i=0; i<SWITCH; i++){
    pinMode(plug[i].switch_pin, INPUT);
    pinMode(plug[i].triac_pin, OUTPUT);
  }
}
void loop(){
  switch_sum = 0;                                                            // reset switch_sum
  for(int i=0; i<SWITCH; i++){
    plug[i].switch_val = (digitalRead(plug[i].switch_pin) == 0) ? 1 : 0;     // Read Arduino input switch_pin, 1 is switch ON, 0 is switch OFF
    switch_sum += plug[i].switch_val;                                        // make sum of all switchs value to alow first presed one selection
    if(plug[i].switch_val == 1 && switch_sum == 1){                          // is master ?
      plug[i].master = 1;
    }
    else {
      plug[i].master= 0;
    }
  }
  ///////////////////////////////////////////////////////////////////////////////////////////////
  for(int i=0; i<SWITCH; i++){
    if(plug[i].switch_val == 0 || plug[i].master == 1){     // if the switch is not activeted or the plug is the master
      plug[i].pot_val = analogRead(plug[i].pot_pin);        // read Arduino pot_pin
      plug[i].interval = plug[i].pot_val * 6;               // mapping between pot_val(0-1024) and delay(0-16384) ms
      plug[i].currentMillis = millis();                     // set time plug counter  
    }
    
    if(plug[i].switch_val == 1 && plug[i].master == 0){     // si le switch est activé et que le plug n'est pas le master
      plug[i].interval = masterTempo;                       // set plug tempo to masterTempo
      plug[i].previousMillis = masterPreviousMillis;          // synchronise plug time
      plug[i].currentMillis = masterCurrentMillis;          // synchronise plug time
      plug[i].triacState = masterTriacState;
    }
    
    if(plug[i].master == 1){                                // if a switch is the first pressed it is used as masterTempo
      masterTempo = plug[i].interval;                       // set it interval as masterTempo
      masterCurrentMillis = plug[i].currentMillis;
      masterPreviousMillis = plug[i].previousMillis;        // set it timing as masterCurrentMillis
      masterTriacState = plug[i].triacState;
    }
    
    if(plug[i].currentMillis - plug[i].previousMillis >= plug[i].interval){   // if time is over interval 
      if(plug[i].triacState == 0){
        plug[i].triacState = 1;
      }
      else { 
        plug[i].triacState = 0;
      }
      digitalWrite(plug[i].triac_pin, plug[i].triacState);
      plug[i].previousMillis = plug[i].currentMillis;                         // init time plug counter  
    }
    if(DEBUG_switch){
      Serial.print(plug[i].switch_pin, DEC), Serial.print("\t");
      Serial.print(plug[i].switch_val, DEC), Serial.print("\t");
      Serial.print(switch_sum, DEC), Serial.print("\t");
      Serial.print(plug[i].master, DEC), Serial.print("\t");
      Serial.print(masterTempo, DEC);
    }
    if(DEBUG_pot){
      Serial.print(plug[i].switch_pin, DEC), Serial.print("\t");
      Serial.print(plug[i].currentMillis, DEC), Serial.print("\t");
      Serial.print(plug[i].interval, DEC), Serial.print("\t");
      Serial.print(plug[i].pot_val);
    }
    if(DEBUG_triac){
      Serial.print(plug[i].currentMillis, DEC), Serial.print("\t");
      Serial.print(plug[i].previousMillis, DEC), Serial.print("\t");
      Serial.print(plug[i].interval, DEC), Serial.print("\t");
      Serial.print(plug[i].triacState, DEC);
    }
    if(DEBUG_pot || DEBUG_switch || DEBUG_triac) Serial.println();
  }
}