#include <FS.h>
#include "SPIFFS.h"
#include <WiFi.h>
#include <vector>
#include <cmath>

std::vector<int> ledPins = {32, 33, 25};

const char* ssid;
const char* password;
String ledMode;
int vel1, vel2;
int ledsInitialState;
int nextLedsState;

String Sssid, Spassword;

void readFile(String path);
void formatFile();
void openFS(void);

void setup() {
  Serial.begin(9600);

  delay(3000);

  // formatFile();

  openFS();

  readFile("/desafio.txt");

  Serial.print("ssid: ");
  Serial.println(ssid);
  Serial.print("password: ");
  Serial.println(password);

  for (int i = 0; i < ledPins.size(); i++) {
    pinMode(ledPins[i], OUTPUT);
    digitalWrite(ledPins[i], ledsInitialState);
  }

  nextLedsState = !ledsInitialState;

  // Connect to Wi-Fi
  Serial.print("Connecting to ");
  Serial.print(ssid);
  WiFi.begin(ssid, password);
  Serial.println("!");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected.");
}

void loop() {
  if (ledMode == "INDO") {
    for(int i = 0; i < ledPins.size(); i++) {
      digitalWrite(ledPins[i], !nextLedsState);
      delay(floor(vel1/2));
    }
    nextLedsState = !nextLedsState;
  } else if (ledMode == "VINDO") {
    for(int i = ledPins.size() - 1; i >= 0; i--) {
      digitalWrite(ledPins[i], !nextLedsState);
      delay(floor(vel2/2));
    }
    nextLedsState = !nextLedsState;
  }

  // Serial.println(ssid);
  // Serial.println(password);
  // Serial.println(ledMode);
  // Serial.println(vel1);
  // Serial.println(vel2);
  // Serial.println(ledsInitialState);
  // delay(3000);
  readFile("/desafio.txt");
}

void readFile(String path) {
  int stringCount = 0;
  Serial.println("Read file");
  File rFile = SPIFFS.open(path, "r"); //r+ leitura e escrita
  if (!rFile) Serial.println("Erro ao abrir arquivo!");
  else {
    Serial.print("----------Lendo arquivo ");
    Serial.print(path);
    Serial.println("  ---------");
    while (rFile.position() < rFile.size()) {
      String s;
      s = rFile.readStringUntil('\n');
      // Serial.println(s);
      int index = s.indexOf('=');
      if (index == -1) break;
      else s = s.substring(index+1);
      s.trim();
      switch(stringCount++){
        case 0:
          Sssid = s;
          ssid = Sssid.c_str();
          break;
        case 1:
          Spassword = s;
          password = Spassword.c_str();
          break;
        case 2:
          ledMode = s;
          break;
        case 3:
          vel1 = s.toInt();
          break;
        case 4:
          vel2 = s.toInt();
          break;
        case 5:
          ledsInitialState = s.toInt();
          break;
        default:
          continue;
      }
    }
    rFile.close();
  }
}

void formatFile() {
  Serial.println("Formantando SPIFFS");
  SPIFFS.format();
  Serial.println("Formatou SPIFFS");
}

void openFS(void) {
  if (!SPIFFS.begin()) {
    Serial.println("\nErro ao abrir o sistema de arquivos");
  }
  else {
    Serial.println("\nSistema de arquivos aberto com sucesso!");
  }
}