#include <WiFi.h>
#include <DHT.h>
#include <LiquidCrystal_I2C.h>
#include <HTTPClient.h>  // 使用HTTPClient替代WebSocket

// Wokwi模拟WiFi
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// HTTP服务器配置（电脑本地）
const char* serverIP = "192.168.1.100";  // Wokwi服务器IP
const int serverPort = 80;               // 服务器端口
const char* serverPath = "/data";        // 请求路径

// 配置参数
#define DHT_PIN 4
#define DHT_TYPE DHT22
#define LCD_ADDRESS 0x27
#define UPDATE_INTERVAL 2000

// 创建对象
DHT dht(DHT_PIN, DHT_TYPE);
LiquidCrystal_I2C lcd(LCD_ADDRESS, 16, 2);
HTTPClient http;

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) delay(100);

  lcd.init();
  lcd.backlight();
  dht.begin();

  Serial.println("Connected to WiFi");
  Serial.println("IP: " + WiFi.localIP().toString());
}

void loop() {
  float temp = dht.readTemperature();
  float hum = dht.readHumidity();

  // 显示在LCD上
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: " + String(temp, 1) + " C");
  lcd.setCursor(0, 1);
  lcd.print("Hum: " + String(hum, 1) + " %");

  // 发送数据到服务器
  if (WiFi.status() == WL_CONNECTED) {
    http.begin(serverIP, serverPort, serverPath);
    http.addHeader("Content-Type", "application/json");

    // 构建JSON数据
    String jsonData = "{\"temp\":" + String(temp, 1) + ",\"hum\":" + String(hum, 1) + "}";

    // 发送POST请求
    int httpCode = http.POST(jsonData);

    if (httpCode > 0) {
      Serial.print("HTTP Response code: ");
      Serial.println(httpCode);
      Serial.print("Response: ");
      Serial.println(http.getString());
    } else {
      Serial.print("Error on sending POST: ");
      Serial.println(httpCode);
    }

    http.end();
  } else {
    Serial.println("WiFi disconnected");
  }

  delay(UPDATE_INTERVAL);
}