// AGENT //

//--------------------------------------------------
// POST PROX Sensor Data to Website API
//--------------------------------------------------
device.on("senddata", function(data) {
// Set URL to your web service

// IMPORTANT:  Make sure URL ends with /

local url = "https://www.yourwebsite.com/yourphpscript/";
 
// Set Content-Type header to json
local headers = { "Content-Type": "application/json" };
 
// encode data and log
local body = http.jsonencode(data);
server.log(body);
// send data to your web service
local request = http.post(url, headers, body);

local response = request.sendsync();
// send the response from the PHP script,
// which is the desired sleep time in seconds.
device.send("data", response.body);
});



// DEVICE //

// Globals
mail <- "no";
sleepTime <- 300;

// Alias GPIO pins
proxSensor <- hardware.pinS;
LED <- hardware.pinC;
ENABLE <- hardware.pinE;

function poll(){
    // Wake-up (enable) the prox sensor
    ENABLE.write(1); 
    imp.sleep(1.0);
    local state = proxSensor.read();
    // Read the pin and log its value
    ENABLE.write(0);
    
    if (state < 1) {
        mail="yes";
        server.log("Mail Detected");
    } 
    if (state > 0){
        mail="no";
        server.log("No Mail Detected");  
    }
    local data = { "mail": mail, "apikey": "674iKm6-7orU-928E-61k2ha-bx8R2960ccBda" }
    agent.send("senddata", data);
}

// Here we already sent the sensor status to the website.
// The website responds back with the sleeptime it requires.
// During the night, we'll deep sleep for 15 hours to save battery.
function gotosleep(sleepTime){
    imp.sleep(2);
    server.log("Going to sleep for: " + sleepTime);
    imp.onidle(function(){
    server.sleepfor(sleepTime);
    });      
}

// Receiving the sleep time from the PHP script.
agent.on("data", function(value) {
    sleepTime = value.tointeger();   
    gotosleep(sleepTime);
});

// Configure IO
proxSensor.configure(DIGITAL_IN);
LED.configure(DIGITAL_OUT,0);
ENABLE.configure(DIGITAL_OUT,0);

// Start the loop
poll();