// [email protected]
//spoilage@2024

#define BLED       23
#define UP         19
#define OK         18
#define buzzer     4
#define DWN        15
#define GAS        35
#define MOISTURE   34
#define AMONIA     33



//#include <WiFi.h>
//#include <WiFiClient.h>
#include <LiquidCrystal_I2C.h>

//char ssid[] = "Wokwi-GUEST";
//char pass[] = "";

LiquidCrystal_I2C lcd(0x27,20,4);

uint8_t Conductivityd[]={24,67,34,23,45,67,89};
uint8_t Amoniad[]={23,45,42,47,35,34,49};
uint8_t Gasd[]={45,78,67,56,46,67,87};
uint8_t tol =5;

float Amonia,Conductivity,Gas;
float cAmonia,cConductivity,cGas;
String fishType[]={"KIBUA   ","CHANGU  ","TASI    ","SEHEWA  ","KOLEKOLE","TAA     ","SEHEWA  "};
String result;

void setup()
{
  pinMode(UP,INPUT_PULLUP);
  pinMode(OK,INPUT_PULLUP);
  pinMode(DWN,INPUT_PULLUP);
  pinMode(BLED,OUTPUT);
  pinMode(buzzer,OUTPUT);
  digitalWrite(buzzer,LOW);
  digitalWrite(BLED,LOW);

  lcd.init();                  
  lcd.backlight();
  loadingdisplay();
  
  Serial.begin(115200);
  delay(500);

  digitalWrite(BLED,HIGH);
  lcd.clear();
}

void loop()
{
  homedisplay();
  read_data(); 
  if(digitalRead(OK)==LOW)
  {
    delay(1000);
    uint8_t fish = fishTypeSelection();
    get_data(fish);
    read_data();
    display_result();
    Alert(5);
    lcd.clear();
  }
}

void get_data(uint8_t num) 
{
  Conductivity=Conductivityd[num];
  Amonia= Amoniad[num];
  Gas=Gasd[num] ;
}

void read_data() 
{
  cConductivity=map(analogRead(MOISTURE),0,4095,0,100);
  cAmonia=map(analogRead(AMONIA),0,4095,0,100);
  cGas=map(analogRead(GAS),0,4095,0,100);
  Serial.print("conductivity is: ");
  Serial.println(cConductivity);
  Serial.print("Amonia is: ");
  Serial.println(cAmonia);
  Serial.print("Gas is: ");
  Serial.println(cGas);
}

void display_result() 
{     
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("**ANALYSING SAMPLE**"); 
  lcd.setCursor(0,1);
  lcd.print("**PLEASE WAIT ....**"); 
  
  if(cGas >= (Gas-tol) && cGas <= (Gas+tol) && cAmonia >= (Amonia-tol) && cAmonia <= (Amonia+tol) && cConductivity >= (Conductivity-tol) && cConductivity <= (Conductivity+tol) )
  result="FISH SPOILED";
  else result="FISH IS FRESH";

  delay(3000);
  
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("**ANALYSIS RESULTS**");  
  lcd.setCursor(0,1);
  lcd.print("--------------------"); 
  lcd.setCursor(0,2);
  lcd.print(result); 
  lcd.setCursor(0,3);
  lcd.print("--------------------"); 
}

void loadingdisplay()
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("   IOT BASED FISH   "); 
  lcd.setCursor(0,1);
  lcd.print(" SPOILAGE DETECTION "); 
  lcd.setCursor(0,2);
  lcd.print(" SYSTEM INITIALIZE ");
  lcd.setCursor(0,3);
  lcd.print("PLEASE WAIT");
  for(int k=11;k<20;k++)
  {
    lcd.setCursor(k,3);
    lcd.print(".");
    delay(500);
  }
}

void homedisplay()
{
  lcd.setCursor(0,0);
  lcd.print("   IOT BASED FISH   "); 
  lcd.setCursor(0,1);
  lcd.print(" SPOILAGE DETECTION "); 
  lcd.setCursor(0,2);
  lcd.print(" PRESS OK TO START "); 
  lcd.setCursor(0,3);
  lcd.print(" FISH SPOILAGE TEST "); 
}

uint8_t fishTypeSelection()
{
  uint8_t i=0;
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("**SELECT FISH TYPE**"); 
  lcd.setCursor(0,2);
  lcd.print("-->>"); 
  while(digitalRead(OK))
  {
    if(digitalRead(UP)==LOW && i < sizeof(fishType))
    {delay(500);i++;}
    if(digitalRead(DWN)==LOW && i > 0)
    {delay(500);i--;}
    lcd.setCursor(0,1);
    lcd.print("--------------------"); 
    lcd.setCursor(5,2);
    lcd.print(fishType[i]); 
    lcd.setCursor(0,3);
    lcd.print("--------------------"); 
  }
  return i;
}

void Alert(uint8_t num)
{
  for(num;num>0;num--)
  {
    digitalWrite(buzzer,HIGH);
    delay(750);
    digitalWrite(buzzer,LOW);
    delay(500);
  }
}