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#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <RCSwitch.h>
#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define OLED_SDA   D7  // MOSI
#define OLED_SCL   D5  // CLK
#define OLED_DC    D2  // D/C
#define OLED_CS    12  // no need of connecting, just use some pin number
#define OLED_RESET D1  // RES
int a = 0;
Adafruit_SSD1306 display(OLED_SDA,OLED_SCL, OLED_DC, OLED_RESET, OLED_CS);
RCSwitch mySwitch = RCSwitch();

const char* ssid =   "xxx";
const char* password = "xxx";

ESP8266WebServer server(80);

char* housecodes[] = {"00010", "00010", "00010", "00010", "00010", "10000"};
char* socketcodes[] = {"10000", "01000", "00100", "00010", "00001", "10000"};
char* socketnames[] = {"Stehlampe", "Weihnachtsbeleuchtung", "Schlafzimmerschrank", "Vitrine", "Raspberry", "Reserve"};
int numofsockets = sizeof(socketcodes)/4;

String css = "body {background-color:#ffffff; color: #000000; font-family: 'Century Gothic', CenturyGothic, AppleGothic, sans-serif;}h1 {font-size: 2em;}";
String head1 = "<!DOCTYPE html> <html> <head> <title>Steckdosensteuerung</title><meta name='viewport' content='width=device-width, initial-scale=1.0, user-scalable=no'> <style>";
String head2 = "</style></head><body><center>";
String header = head1 + css + head2;
String body = "";

String website(String h, String b){
  String complete = h+b;
  return complete;
}

void setup(void){
  pinMode(2, OUTPUT);
  body = "<h1>Steckdosensteuerung</h1><br /></center><div style='padding-left: 20px;'>";
  for(int i = 0; i < numofsockets; i++){
    String namesocket = socketnames[i];
    body = body + "<p><a href=\"socket" + String(i) + "On?pw=\"><button>AN</button></a>&nbsp;<a href=\"socket" + String(i) + "Off?pw=\"><button>AUS</button></a> " + namesocket + " (" + housecodes[i] + ":" + socketcodes[i] + ")</p>";
  }
  body += "</center></body>";
  WiFi.begin(ssid, password);

  display.begin(SSD1306_SWITCHCAPVCC);
  display.display();
  delay(500);
  display.clearDisplay();

  display.setTextColor(WHITE);
  display.setTextSize(1);
  display.setCursor(25,11);
  display.print("TRcoding.net");
  display.display();
  delay(2000);

  display.clearDisplay();
  display.setCursor(0,11);
  display.print("Verbindungsaufbau ...");
  display.display();

  delay(4000);
  display.clearDisplay();

  mySwitch.enableTransmit(2);
  mySwitch.enableReceive(0);
  delay(1000);
  Serial.begin(115200);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP: ");
  Serial.println(WiFi.localIP());
  display.clearDisplay();
  display.setCursor(0,3);
  display.print("Host:  ");
  display.println(ssid);
  display.print("IP: ");
  display.println(WiFi.localIP());
  display.display();

  server.on("/", [](){
    String webPage = website(header, body);
    server.send(200, "text/html", webPage);
  });

  for(int i = 0; i < numofsockets; i++){
    String pathOn = "/socket"+String(i)+"On";
    const char* pathOnChar = pathOn.c_str();
    String pathOff = "/socket"+String(i)+"Off";
    const char* pathOffChar = pathOff.c_str();

    server.on(pathOnChar, [i](){
      String get_password = server.arg("pw");
      if (get_password == password)
      {
        String webPage = website(header, body);
        server.send(200, "text/html", webPage);
        mySwitch.switchOn(housecodes[i], socketcodes[i]);
        Serial.print("Code AN: ");
        Serial.println(socketcodes[i]);
        display.clearDisplay();
        display.setCursor(0,3);
        display.print("IP: ");
        display.println(WiFi.localIP());
        display.print("Hauscode: ");
        display.println(housecodes[i]);
        display.print("Code: ");
        display.print(socketcodes[i]);
        display.println(" AN");
        display.display();
        delay(1000);
      } else {
        String webPage = website(header + "<h2 style=\"color: #ff0000\">Passwort fehlt (?pw=)</h2>", body);
        server.send(200, "text/html", webPage);
        Serial.print("Passwort fehlt (?pw=): ");
        Serial.println(password);
      }
    });

    server.on(pathOffChar, [i](){
      String get_password = server.arg("pw");
      if (get_password == password)
      {
        String webPage = website(header, body);
        server.send(200, "text/html", webPage);
        mySwitch.switchOff(housecodes[i], socketcodes[i]);
        Serial.print("Code AUS: ");
        Serial.println(socketcodes[i]);
        display.clearDisplay();
        display.setCursor(0,3);
        display.print("IP: ");
        display.println(WiFi.localIP());
        display.print("Hauscode: ");
        display.println(housecodes[i]);
        display.print("Code: ");
        display.print(socketcodes[i]);
        display.println(" AUS");
        display.display();
        delay(1000);
      } else {
        String webPage = website(header + "<h2 style=\"color: #ff0000\">Passwort fehlt (?pw=)</h2>", body);
        server.send(200, "text/html", webPage);
        Serial.print("Passwort fehlt (?pw=): ");
        Serial.println(password);
      }
    });
  }
  server.begin();
  Serial.println("HTTP-Server gestartet");
}

void loop(void){
  digitalWrite(2, HIGH);
  server.handleClient();
}