#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <Adafruit_NeoPixel.h>
#define PIN 6
Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, PIN, NEO_GRB + NEO_KHZ800);
const char WiFiSSID[] = "NSA";
const int LED_PIN = 5; // Thing's onboard, green LED
const int ANALOG_PIN = A0; // The only analog pin on the Thing
const int DIGITAL_PIN = 12; // Digital pin to be read
WiFiClient client;
String responseString;
String currentCondition;
boolean startCapture;

void connect()
{
  byte ledStatus = LOW;
  Serial.println();
  Serial.println("Connecting to: " + String(WiFiSSID));
  // Set WiFi mode to station (as opposed to AP or AP_STA)
  WiFi.mode(WIFI_STA);

  // WiFI.begin([ssid], [passkey]) initiates a WiFI connection
  // to the stated [ssid], using the [passkey] as a WPA, WPA2,
  // or WEP passphrase.
  WiFi.begin(WiFiSSID);

  // Use the WiFi.status() function to check if the ESP8266
  // is connected to a WiFi network.
  while (WiFi.status() != WL_CONNECTED){
    // Blink the LED
    digitalWrite(LED_PIN, ledStatus); // Write LED high/low
    ledStatus = (ledStatus == HIGH) ? LOW : HIGH;

    // Delays allow the ESP8266 to perform critical tasks
    // defined outside of the sketch. These tasks include
    // setting up, and maintaining, a WiFi connection.
    delay(100);
    // Potentially infinite loops are generally dangerous.
    // Add delays -- allowing the processor to perform other
    // tasks -- wherever possible.
  }
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

void initHardware()
{
  Serial.begin(9600);
  pinMode(DIGITAL_PIN, INPUT_PULLUP); // Setup an input to read
  pinMode(LED_PIN, OUTPUT); // Set LED as output
  digitalWrite(LED_PIN, HIGH); // LED off
  // Don't need to set ANALOG_PIN as input,
  // that's all it can be.
}

// Perform an HTTP GET request to a remote page
bool getPage() {
  const char http_site[] = "api.openweathermap.org";
  const int http_port = 80;
  Serial.println("About to connect");
  // Attempt to make a connection to the remote server
  if ( !client.connect(http_site, http_port) ) {
    Serial.println("Connect failed");
    return false;
  }
  Serial.println("Connect succeeded");
  // Make an HTTP GET request
  client.println("GET /data/2.5/weather?q=SanFrancisco,usa&appid=e798a6b30f92812133a91c06a33dbe41 HTTP/1.1");
  client.print("Host: ");
  client.println(http_site);
  client.println("Connection: close");
  client.println();

  Serial.println("Data sent");
  return true;
}

String getValuesFromKey(const String response, const String sKey){
  String quotedKey;
  quotedKey = "\"" + sKey + "\":";
  char key[quotedKey.length()];
  quotedKey.toCharArray(key, sizeof(key));
  int keySize = sizeof(key)-1;
  String result = "";
  int responseLength = response.length();
  for(int i=0; i < (responseLength-keySize-1); i++){
    char c[keySize];
    for(int k=0; k<keySize; k++){
      c[k] = response.charAt(i+k);
    }
  boolean isEqual = true;
  for(int k=0; k<keySize; k++){
      if(!(c[k] == key[k])){
        isEqual = false;
        break;
      }
    }
  if(isEqual){
     int j= i + keySize + 1;
     while(!(response.charAt(j) == ',')){
        result += response.charAt(j);
        j++;
      }
      //Remove char '"'
     result.replace("\"","");
     break;
    }
  }
  return result;
}

void colorWipe(uint32_t c, uint8_t wait) {
  for(uint16_t i=0; i<strip.numPixels(); i++) {
      strip.setPixelColor(i, c);
      strip.show();
      delay(10);
  }
}

void setColor(int R, int G, int B){
  colorWipe(strip.Color(R, G, B), 50);
}

void updateColor(String condition){
  if (condition == "clear sky"){
      setColor(100, 100, 100);
    }

   if (condition == "few clouds"){
      setColor(100, 100, 100);
    }

   if (condition == "scattered clouds"){
      setColor(100, 100, 100);
    }

   if (condition == "broken clouds"){
      setColor(100, 100, 100);
    }

   if (condition == "shower rain"){
      setColor(100, 100, 100);
    }

   if (condition == "broken clouds"){
      setColor(100, 100, 100);
    }

   if (condition == "rain"){
      setColor(100, 100, 100);
    }

   if (condition == "thunderstorm"){
      setColor(100, 100, 100);
    }

    if (condition == "snow"){
      setColor(100, 100, 100);
    }

   if (condition == "mist"){
      setColor(100, 100, 100);
    }
}


void setup()
{
  initHardware(); // Setup input/output I/O pins
  connect(); // Connect to WiFi
  digitalWrite(LED_PIN, LOW); // LED on to indicate connect success
  delay(500);
  if ( !getPage() ) {
    Serial.println("GET request failed");
  }
}

void loop()
{
  if (client.available())
  {
    char c = client.read();
    if(c == '{'){
      startCapture=true;
    }
    if(startCapture){
      responseString += c;
    }
  }

  // If the server has disconnected, stop the client and WiFi
  if ( !client.connected() ) {
    Serial.println();

    // Close socket and wait for disconnect from WiFi
    client.stop();
    if ( WiFi.status() != WL_DISCONNECTED ) {
      WiFi.disconnect();
    }

    // Turn off LED
    digitalWrite(LED_PIN, LOW);

    // Do nothing
    Serial.println("Received " + (String)responseString.length() + " bytes");
    Serial.println("Disconnecting.");
    client.stop();
    client.flush();
    Serial.println();
    currentCondition = getValuesFromKey(responseString,"description");
    Serial.print("description:");
    Serial.println(currentCondition);
    Serial.println();
    updateColor(currentCondition);
    delay(1800000);
    connect();
   // Serial.println("reconnected");
    if( !getPage() ) {
      Serial.println("GET request failed");
    }
  }
 }