// Developed By Patrick Woollvin (MrPurpleSocks)
// Good luck to whoever tries to modfy this in the future

// Libraries
#include <LiquidCrystal.h>
#include "WiFi.h"

// Wokwi Debug Pins [REMOVE FOR PRODUCTION]
#define LED 4

// Button Pins
#define LEFT 36
#define RIGHT 35
#define SELECT 37

// LCD Pins
#define LCD_RS 10
#define LCD_E 11
#define LCD_D4 12
#define LCD_D5 13
#define LCD_D6 14
#define LCD_D7 17

// LCD other
LiquidCrystal lcd(LCD_RS, LCD_E, LCD_D4, LCD_D5, LCD_D6, LCD_D7);

// UI States
enum { enterMenu, item, genSelect } selectState = enterMenu;
enum { WiFiSetup, Main, Admin } menu = WiFiSetup;

// Menu Configs
int curPos = 0;

volatile byte state = LOW;

// Debounce
volatile byte debounceDelay = 100;
volatile byte debounceLeft = 0;

// Gen Global Info
  bool wifiStatus = false; //0 = Offline, 1 = Online
  bool wifiSetup = false;

void setup() {
  // Setup Start
  Serial.begin(115200);

  // Pin Config
  pinMode(LED, OUTPUT);
  pinMode(LEFT, INPUT_PULLUP);
  pinMode(RIGHT, INPUT_PULLUP);
  pinMode(SELECT, INPUT_PULLUP);

  // WiFi Config
   WiFi.mode(WIFI_STA);
   int n = WiFi.scanNetworks();

  // LCD Config
  lcd.begin(16,2);
  lcd.print("WBAttend Offline");
  lcd.setCursor(0,1);
  if (n == 0) {
    lcd.print("  No Networks");
  } else if (n > 0 && n < 10) {
    lcd.print("  ");
    lcd.setCursor(2, 1);
    lcd.print(n);
    lcd.setCursor(3,1);
    lcd.print(" Network(s)");
  } else {
    lcd.print("  ");
    lcd.setCursor(2, 1);
    lcd.print(n);
    lcd.setCursor(4,1);
    lcd.print(" Networks");
  }

  // Interrupts
  attachInterrupt(digitalPinToInterrupt(LEFT), test, HIGH);
  attachInterrupt(digitalPinToInterrupt(SELECT), selectISR, HIGH);

  // Final Setup
  delay(100); // Configure timing

  Serial.println("WB Attend Terminal Ready");
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  digitalWrite(LED, state);
}

void test() {
  int actTime = millis();

  if ((actTime - debounceLeft) >= debounceDelay) {
    state = !state;
  }
}


void selectISR() {
  switch (selectState) {
    case 0:
      switch (menu) {
        case 0:
          wifiSetupInit();
        default:
          Serial.println("ERR: UNKNOWN MENU");
      }
    default:
      Serial.println("ERR: UNKNOWN ACTION");
  }
}

void rightISR() {

}

// Gen UI Functions
void returnStatus() {
  lcd.noCursor();
  lcd.setCursor(0,0);
  lcd.print("                ");
  lcd.setCursor(0,0);
  lcd.print("                ");
  lcd.print("WBAttend Offline");
  lcd.setCursor(0,1);
  if (n == 0) {
    lcd.print("  No Networks");
  } else if (n > 0 && n < 10) {
    lcd.print("  ");
    lcd.setCursor(2, 1);
    lcd.print(n);
    lcd.setCursor(3,1);
    lcd.print(" Network(s)");
  } else {
    lcd.print("  ");
    lcd.setCursor(2, 1);
    lcd.print(n);
    lcd.setCursor(4,1);
    lcd.print(" Networks");
  }
  selectState = enterMenu;
  menu = WiFiSetup;
}

// WiFi Setup Functions
void wifiSetupInit() {
  lcd.setCursor(0, 1);
  lcd.print("                ");
  lcd.setCursor(0,0);
  lcd.print("                ");
  lcd.setCursor(0,0);
  lcd.print("HowTo SetUp WiFi");
  lcd.setCursor(0, 1);
  lcd.print("  Device   Web");
  lcd.setCursor(2,1);
  lcd.cursor();
  selectState = genSelect;
  curPos = 1;
}

void wifiSetupHandler() {
  if (menu == 0) {
    switch (curPos) {
      case 1:
        //Device Setup Function
        Serial.println("Not added lmao");
        returnStatus();
      case 2:
        // Web  Setup Function
        Serial.println("Not added lmao");
        returnStatus();
    }
  }
}

void wifiSetupRight() {
  if (curPos == 1 && menu == 0) {
    lcd.setCursor(11, 1);
    curPos = 2;
  }
}

void wifiSetupLeft() {
  if (curPos == 2 && menu == 0) {
      lcd.setCursor(2, 1);
      curPos = 1;
    }
}