#include <WiFi.h>
#include <ArduinoJson.h>

const char* ssid     = "Wokwi-GUEST";
const char* password = "";

const char* host = "1.15.242.194";

#define PIN_LED 8

// 初始化
void setup() {
    Serial.begin(115200); // 设置串口输出，波特率为115200
    while (!Serial);      // 等待串口就绪

    // We start by connecting to a WiFi network
    Serial.println("");
    Serial.println("");
    Serial.print("Connecting to ");
    Serial.println(ssid);

    pinMode(PIN_LED, OUTPUT);
    bool bFlag = true;

    WiFi.begin(ssid, password); // 连接热点

    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
        digitalWrite(PIN_LED, bFlag ? HIGH : LOW);
        bFlag = !bFlag;
    }

    digitalWrite(PIN_LED, LOW);

    Serial.println("");
    Serial.println("WiFi connected");
    Serial.println("IP address: ");
    Serial.println(WiFi.localIP()); // 显示本机IP
}

// 循环
/*
void loop() {
    Serial.print("connecting to ");
    Serial.println(host);

    // Use WiFiClient class to create TCP connections
    WiFiClient client;
    const int httpPort = 80;
    if (!client.connect(host, httpPort)) {  // 连接到host服务器的80端口，失败则显示错误信息
        Serial.println("connection failed");
        return;
    }

    // We now create a URI for the request
    // 访问网址 http://1.15.242.194/getweather 获取天气信息
    String url = "/getweather";

    Serial.print("Requesting URL: ");
    Serial.println(url);

    // This will send the request to the server
    // 往服务器发请求
    client.print(String("GET ") + url + " HTTP/1.1\r\n" +
                 "Host: " + host + "\r\n" +
                 "Connection: close\r\n\r\n");

    // 等待服务器回应
    unsigned long timeout = millis();
    while (client.available() == 0) { // 判断连接是否有数据到达
        if (millis() - timeout > 5000) {  // 如果超过5秒没有回应则显示错误信息并关闭连接
            Serial.println(">>> Client Timeout !");
            client.stop();
            return;
        }
    }

    // Read all the lines of the reply from server and print them to Serial
    String line;
    while(client.available()) { // 如果有数据到达
        line = client.readStringUntil('\r'); // 读取一行数据直到回车符\r为止
        Serial.print(line); // 显示读取到的数据
    }

    Serial.println("");
    // json格式解码
    DynamicJsonDocument jo(1024);
    // Deserialize the JSON document
    DeserializationError error = deserializeJson(jo, line);
    Serial.println((int)jo["temp"]);
    Serial.println((const char*)jo["weather"]);
    Serial.println((const char*)jo["WD"]);
    Serial.println((const char*)jo["WS"]);
    Serial.println((const char*)jo["SD"]);
    Serial.println((int)jo["aqi"]);
    Serial.println((const char*)jo["area"]);
    Serial.println((const char*)jo["date"]);
    Serial.println((const char*)jo["weekday"]);
    //Serial.println((uint32_t)jo["updatetime"]);
    time_t updatetime = (time_t)jo["updatetime"];
    Serial.println(asctime(localtime(&updatetime)));

    client.stop();
    Serial.println();
    Serial.println("closing connection");

    delay(5000000);
}
*/

#include <HTTPClient.h>
/*
void loop() {
    char *url = "http://1.15.242.194/getweather";
    DynamicJsonDocument jo(1024);
    HTTPClient http;
    http.begin(url);
    int httpCode = http.GET();  // 用GET模式请求数据
    if(httpCode == HTTP_CODE_OK) {  // 请求成功
        // 获取json数据 
        String line = http.getString(); // 获取返回的数据
        Serial.println(line);
        DeserializationError error = deserializeJson(jo, line); // json解释
        if (!error)
        {
            Serial.println((int)jo["temp"]);              // 温度
            Serial.println((const char*)jo["weather"]);   // 天气
            Serial.println((const char*)jo["WD"]);        // 风向
            Serial.println((const char*)jo["WS"]);        // 风力
            Serial.println((const char*)jo["SD"]);        // 湿度
            Serial.println((int)jo["aqi"]);               // 空气质量指数
            Serial.println((const char*)jo["area"]);      // 城市
            Serial.println((const char*)jo["date"]);      // 日期
            Serial.println((const char*)jo["weekday"]);   // 星期
            //Serial.println((uint32_t)jo["updatetime"]); // 更新时间
            time_t updatetime = (time_t)jo["updatetime"];
            Serial.println(asctime(localtime(&updatetime)));
        }
    }
    http.end();
    delay(10000000);
}
*/
void loop() {
    char *url = "http://www.weather.com.cn/data/cityinfo/101270101.html";
    DynamicJsonDocument jo(1024);
    HTTPClient http;
    http.begin(url);
    int httpCode = http.GET();  // 用GET模式请求数据
    if(httpCode == HTTP_CODE_OK) {  // 请求成功
        // 获取json数据 
        String line = http.getString(); // 获取返回的数据
        Serial.println(line);
        DeserializationError error = deserializeJson(jo, line); // json解释
        if (!error)
        {
            Serial.print("城市:");
            Serial.println((const char*)jo["weatherinfo"]["city"]);              // 城市
            Serial.print("城市ID:");
            Serial.println((const char*)jo["weatherinfo"]["cityid"]);            // 城市ID
            Serial.print("最低温度:");
            Serial.println((const char*)jo["weatherinfo"]["temp1"]);             // 最低温度
            Serial.print("最高温度:");
            Serial.println((const char*)jo["weatherinfo"]["temp2"]);             // 最高温度
            Serial.print("天气情况:");
            Serial.println((const char*)jo["weatherinfo"]["weather"]);           // 天气
            Serial.print("更新时间:");
            Serial.println((const char*)jo["weatherinfo"]["ptime"]);             // 时间
        }
    }
    http.end();
    delay(10000000);
}