#include <FS.h>
#include <Arduino.h>
#include <ESP8266WiFi.h>
 
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h>
#include <ArduinoJson.h>
 
char SCKEY[61] = "你在server酱上获取到的SCKEY";
char server[12] = "sc.ftqq.com"; //server酱服务器
 
//需要发送的推送内容具体规格参考:sc.ftqq.com
String Text = "?text=传感器接收到警报&desp=警报已被触发![logo](https://img.icons8.com/clouds/100/000000/box-important.png)";
 
bool shouldSaveConfig = false;
 
const int httpPort = 80;
int times = 0;
int value = 0;
int ButtonState = 0;
 
const int ButtonPin = D1;
const int ResetPin = D2; //设置键
const int LEDpin = D4;   //指示灯
int ResetButtonState = digitalRead(ResetPin);
 
void saveConfigCallback()
{
  Serial.println("Should save config");
  shouldSaveConfig = true;
}
 
void setup()
{
  pinMode(ButtonPin, INPUT);
  pinMode(ResetPin, INPUT);
  pinMode(LEDpin, OUTPUT);
  digitalWrite(LEDpin,HIGH);
  Serial.begin(115200);
  Serial.println("mounting FS...");
 
  if (SPIFFS.begin())
  {
    Serial.println("mounted file system");
    if (SPIFFS.exists("/config.json"))
    {
      //file exists, reading and loading
      Serial.println("reading config file");
      File configFile = SPIFFS.open("/config.json", "r");
      if (configFile)
      {
        Serial.println("opened config file");
        size_t size = configFile.size();
        // Allocate a buffer to store contents of the file.
        std::unique_ptr<char[]> buf(new char[size]);
 
        configFile.readBytes(buf.get(), size);
        DynamicJsonBuffer jsonBuffer;
        JsonObject &json = jsonBuffer.parseObject(buf.get());
        json.printTo(Serial);
        if (json.success())
        {
          Serial.println("\nparsed json");
 
          strcpy(SCKEY, json["SCKEY"]);
        }
        else
        {
          Serial.println("failed to load json config");
        }
        configFile.close();
      }
    }
  }
  else
  {
    Serial.println("failed to mount FS");
  }
 
  WiFiManagerParameter custom_SCKEY("SCKEY", "SCKEY", SCKEY, 61);
 
  WiFiManager wifiManager;
 
  wifiManager.setSaveConfigCallback(saveConfigCallback);
 
  wifiManager.addParameter(&custom_SCKEY);
 
  if (ResetButtonState == HIGH)
  {
    Serial.println("Getting Reset ESP Wifi-Setting.......");
    delay(1000);
    wifiManager.resetSettings();
    delay(5000);
    Serial.println("Formatting FS......");
    delay(1000);
    SPIFFS.format();
    delay(5000);
    Serial.println("Done.Reboot In 5 seconds......");
    delay(5000);
    ESP.restart();
  }
 
  if (!wifiManager.autoConnect("", ""))
  {
    Serial.println("failed to connect and hit timeout");
    delay(3000);
    ESP.reset();
    delay(5000);
  }
 
  Serial.println("connected...yeey :)");
 
  strcpy(SCKEY, custom_SCKEY.getValue());
 
  if (shouldSaveConfig)
  {
    Serial.println("saving config");
    DynamicJsonBuffer jsonBuffer;
    JsonObject &json = jsonBuffer.createObject();
    json["SCKEY"] = SCKEY;
 
    File configFile = SPIFFS.open("/config.json", "w");
    if (!configFile)
    {
      Serial.println("failed to open config file for writing");
    }
 
    json.printTo(Serial);
    json.printTo(configFile);
    configFile.close();
  }
 
  Serial.println("local ip");
  Serial.println(WiFi.localIP());
}
 
void loop()
{
  int ButtonState = digitalRead(ButtonPin);
  if (ButtonState == HIGH)
  {
    digitalWrite(LEDpin,LOW);
    times++;
    delay(1000);
    Serial.print("connecting to ");
    Serial.println(server);
    WiFiClient client;
    delay(1000);
    client.connect(server, httpPort);
    Serial.print("Requesting URL: ");
    Serial.println(SCKEY);
    client.print(String("GET ") + SCKEY + Text + "自重启以来第" + times + "次警报"
                                                                          " HTTP/1.1\r\n" +
                 "Host: " + server + "\r\n" +
                 "Connection: close\r\n\r\n");
    Serial.println("Respond:");
    client.available();
    String line = client.readStringUntil('\r');
    Serial.println(line);
    Serial.print("推送次数: ");
    Serial.println(times);
    Serial.println("closing connection");
    delay(300000);
    digitalWrite(LEDpin, HIGH);
  }
}