/*    Board: NodeMCU 1.0 (ESP-12E Module)    */
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
//-----------------------------------------------------------------------------------------------------------------------
    const char* ssid = "********";
    const char* password = "********";
    const char* mqtt_server = "192.168.1.11";
    const byte reed_switch_pin  = D2;
//-----------------------------------------------------------------------------------------------------------------------
    WiFiClient espClient;
    PubSubClient client(mqtt_server, 1883, callback, espClient);
//-----------------------------------------------------------------------------------------------------------------------
void go_to_sleep(int seconds)
{
    send_mqtt_message("/dev/reed-switch_001/go_to_sleep", "1");
    delay(1000);
    ESP.deepSleep(seconds * 1000000);
}
//-----------------------------------------------------------------------------------------------------------------------
boolean reconnect()
{
    if (client.connect("ESP8266Client"))    {    return client.connected();    }
    return 0;
}
//-----------------------------------------------------------------------------------------------------------------------
int send_mqtt_message(String Topic, String Message)
{
    if (!client.connected())   {    reconnect();    }
    if (client.publish((char*) Topic.c_str(), (char*) Message.c_str()))    return 1;
    else return 0;
}
//-----------------------------------------------------------------------------------------------------------------------
void Interrupt_something() {  Serial.print("An interrupt ");  }
//-----------------------------------------------------------------------------------------------------------------------
void setup()
{
    Serial.begin(9600);
    Serial.setTimeout(2000);
    while(!Serial) { }

    pinMode(reed_switch_pin, INPUT_PULLUP);
    attachInterrupt(digitalPinToInterrupt(reed_switch_pin), Interrupt_something, CHANGE);

    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED)    {    delay(500);    }

    send_mqtt_message("/dev/reed-switch_001/go_to_sleep", "0");
    send_mqtt_message("/dev/reed-switch_001/connected",   "1");

    if ( ESP.getResetReason() == "Deep-Sleep Wake")
            send_mqtt_message("/dev/reed-switch_001/run_type", "0");
    else    send_mqtt_message("/dev/reed-switch_001/run_type", "1");

    go_to_sleep(10);
}
//-----------------------------------------------------------------------------------------------------------------------
void loop() { }
//-----------------------------------------------------------------------------------------------------------------------