#include "WiFi.h"
#include <HTTPClient.h>

String stMac;
char mac[50];
String ip;
const char* url = "https://data.epa.gov.tw/api/v2/aqx_p_432?\
api_key=e8dd42e6-9b8b-43f8-991e-b3dee723a52d\
&limit=1000&sort=ImportDate%20desc&format=JSON"; 
void setup() {
  Serial.begin(115200); 
  int LED_BUILTIN = 2; 
  pinMode(LED_BUILTIN, OUTPUT); 
  digitalWrite(LED_BUILTIN, LOW); 
  // setup WiFi
  Serial.println("Initializing WiFi...");
  WiFi.mode(WIFI_STA);
  WiFi.disconnect(); // 無線初始化
  Serial.println("Connecting to WiFi ");
  WiFi.begin("Wokwi-GUEST", "");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  digitalWrite(LED_BUILTIN, HIGH);
  Serial.println("");
  Serial.println("WiFi connected");
  ip = WiFi.localIP().toString(); // 取得分配到的 IP 位址
  Serial.println("IP address: " + ip);
  // 顯示 MAC 位址 
  Serial.println("MAC address: " + WiFi.macAddress()); 
}

void loop() {
  HTTPClient http; // 建立 http client 物件
   Serial.println("啟動網站連線");
   http.begin(url); // 啟動網頁連線
   int httpCode = http.GET(); //連線請求方法，回應狀態碼
   Serial.printf("httpCode=%d\n", httpCode);
   if (httpCode == HTTP_CODE_OK){
     String payload = http.getString(); // 取得回應的資訊
     Serial.print("回應資訊=");
     Serial.println(payload);
   }   
   http.end(); //關閉網站連線;
   delay(20000); 
}