#include <Arduino.h>

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

// WiFi 設定

#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD ""
#define WIFI_CHANNEL 6
// API 設定 - 限制資料量以節省記憶體
const char* url = "https://data.moenv.gov.tw/api/v2/aqx_p_488?api_key=bb061ed6-3e42-484c-be3d-b5e1b7899070&limit=3&sort=datacreationdate%20desc&format=JSON&filters=SiteName,EQ,臺南";
void getAirQuality();
void setup() {
  Serial.begin(115200);
  
  // 連接 WiFi
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD,WIFI_CHANNEL );
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");
  
  getAirQuality();
}

void getAirQuality() {
  HTTPClient http;
  
  http.begin(url);
  
  int httpCode = http.GET();
  
  if (httpCode == HTTP_CODE_OK) {
    // 方法1：直接使用較小的文件並手動提取所需欄位
    DynamicJsonDocument doc(8192); // 根據需要調整大小
    
    DeserializationError error = deserializeJson(doc, http.getStream());
    
    if (!error) {
      JsonArray records = doc["records"];
      
      for (JsonObject record : records) {
        // 只提取需要的欄位
        const char* sitename = record["sitename"];
        const char* county = record["county"];
        const char* pm25 = record["pm2.5"];
        const char* status = record["status"];
        const char* date = record["datacreationdate"];
        
        Serial.printf("站點: %s\n", sitename ? sitename : "N/A");
        Serial.printf("縣市: %s\n", county ? county : "N/A");
        Serial.printf("PM2.5: %s\n", pm25 ? pm25 : "N/A");
        Serial.printf("狀態: %s\n", status ? status : "N/A");
        Serial.printf("時間: %s\n", date ? date : "N/A");
        Serial.println("------------");
      }
    } else {
      Serial.print("JSON 解析失敗: ");
      Serial.println(error.c_str());
    }
  } else {
    Serial.printf("HTTP 錯誤: %d\n", httpCode);
  }
  
  http.end();
}

void loop() {
  // 每 10 分鐘更新一次
  delay(600000);
  getAirQuality();
}