#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_ADS1X15.h>
#include <WiFi.h>
#include <HTTPClient.h>

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

// Line Notify 權杖(Token)
const char* lineToken = "4MoqPh94RvUo8L0WjEB4YLuXEbgeq36W63ZGitAb0QL";

// 土壤溼度感測器的引腳
const int soilMoisturePin = A0;

// 濕度閾值
const int moistureThreshold = 500;

void setup() {
  Serial.begin(115200);

  // 連接到WiFi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");

  // 初始化土壤溼度感測器
  pinMode(soilMoisturePin, INPUT);
}

void loop() {
  // 讀取土壤濕度值
  int soilMoisture = analogRead(soilMoisturePin);

  // 判斷濕度是否低於閾值
  if (soilMoisture < moistureThreshold) {
    // 發送 Line Notify 通知
    sendLineNotify("土壤濕度過低，請檢查澆水狀況！");
    delay(300000);  // 延遲 5 分鐘，避免過度通知
  }

  delay(1000);  // 每秒檢查一次濕度
}

// 函式：發送 Line Notify 通知
void sendLineNotify(String message) {
  HTTPClient http;
  String url = "https://notify-api.line.me/api/notify";
  http.begin(url);
  http.addHeader("Content-Type", "application/x-www-form-urlencoded");
  http.addHeader("Authorization", "Bearer " + String(lineToken));
  int httpCode = http.POST("message=" + message);
  http.end();
}