#include <WiFi.h>
#include "time.h"
#include "FS.h"
#include "SD.h"
#include <SPI.h>
#include <algorithm>
// --- 設定區 ---
const char* ssid = "您的WiFi名稱";
const char* password = "您的WiFi密碼";
const char* ntpServer = "pool.ntp.org";
const long gmtOffset_sec = 28800; // 台灣時區 UTC+8
const int daylightOffset_sec = 0;
const int MAX_TASKS = 30;
const int RELAY_PIN = 26;
const char* filePath = "/schedule.txt";
struct Task {
  uint8_t hr;
  uint8_t mn;
  bool state;
};
Task scheduleList[MAX_TASKS];
int taskCount = 0;
static int lastCheckedMinute = -1;
// --- 排序工具 ---
bool compareTasks(const Task &a, const Task &b) {
  return (a.hr * 60 + a.mn) < (b.hr * 60 + b.mn);
}
// --- SD 卡讀寫 ---
void saveScheduleToSD() {
  std::sort(scheduleList, scheduleList + taskCount, compareTasks);
  File file = SD.open(filePath, FILE_WRITE);
  if (!file) return;
  for (int i = 0; i < taskCount; i++) {
    file.printf("%02d:%02d:%s\n", scheduleList[i].hr, scheduleList[i].mn, scheduleList[i].state ? "on" : "off");
  }
  file.close();
  Serial.println("💾 資料已同步至 SD 卡");
}
void loadSchedule() {
  File file = SD.open(filePath);
  if (!file) return;
  taskCount = 0;
  while (file.available() && taskCount < MAX_TASKS) {
    String line = file.readStringUntil('\n');
    line.trim();
    int c1 = line.indexOf(':');
    int c2 = line.lastIndexOf(':');
    if (c1 != -1 && c2 != -1) {
      scheduleList[taskCount].hr = (uint8_t)line.substring(0, c1).toInt();
      scheduleList[taskCount].mn = (uint8_t)line.substring(c1 + 1, c2).toInt();
      scheduleList[taskCount].state = (line.substring(c2 + 1) == "on");
      taskCount++;
    }
  }
  file.close();
  std::sort(scheduleList, scheduleList + taskCount, compareTasks);
  Serial.printf("📊 已載入 %d 組排程\n", taskCount);
}
// --- 指令處理 ---
void handleSerial() {
  if (Serial.available()) {
    String input = Serial.readStringUntil('\n');
    input.trim();
    // 1. 顯示目前時間
    if (input == "time") {
      struct tm timeinfo;
      if (getLocalTime(&timeinfo)) {
        Serial.printf("🕒 目前系統時間：%02d:%02d:%02d\n", timeinfo.tm_hour, timeinfo.tm_min, timeinfo.tm_sec);
      } else {
        Serial.println("❌ 無法取得時間，請檢查 WiFi/NTP 連線");
      }
    }
    // 2. 強制開啟
    else if (input == "on") {
      digitalWrite(RELAY_PIN, HIGH);
      Serial.println("💡 手動操作：開啟 (ON)");
    }
    // 3. 強制關閉
    else if (input == "off") {
      digitalWrite(RELAY_PIN, LOW);
      Serial.println("🌑 手動操作：關閉 (OFF)");
    }
    // 4. 切換狀態
    else if (input == "toggle") {
      bool newState = !digitalRead(RELAY_PIN);
      digitalWrite(RELAY_PIN, newState);
      Serial.printf("🔄 手動切換：現在為 %s\n", newState ? "開啟" : "關閉");
    }
    // 5. 列出排程
    else if (input == "list") {
      Serial.println("\n--- 排程清單 ---");
      if (taskCount == 0) Serial.println("(無資料)");
      for (int i = 0; i < taskCount; i++) {
        Serial.printf("[%d] %02d:%02d -> %s\n", i + 1, scheduleList[i].hr, scheduleList[i].mn, scheduleList[i].state ? "ON" : "OFF");
      }
      Serial.println("----------------");
    }
    // 6. 新增排程
    else if (input.startsWith("add ")) {
      uint8_t h, m;
      char action[4];
      if (sscanf(input.c_str() + 4, "%hhu:%hhu %3s", &h, &m, action) == 3) {
        if (h > 23 || m > 59) {
          Serial.println("❌ 時間格式錯誤 (小時0-23, 分鐘0-59)");
          return;
        }
        bool state = (strcmp(action, "on") == 0);
        // 重複檢查
        bool duplicate = false;
        for (int i = 0; i < taskCount; i++) {
          if (scheduleList[i].hr == h && scheduleList[i].mn == m) {
            duplicate = true;
            break;
          }
        }
        if (!duplicate && taskCount < MAX_TASKS) {
          scheduleList[taskCount++] = {h, m, state};
          saveScheduleToSD();
          Serial.printf("✅ 已新增 %02d:%02d -> %s\n", h, m, state ? "ON" : "OFF");
        } else {
          Serial.println("❌ 重複時間或已達上限");
        }
      } else {
        Serial.println("❌ 格式錯誤！範例：add 08:30 on");
      }
    }
    // 7. 刪除排程
    else if (input.startsWith("del ")) {
      int idx = input.substring(4).toInt() - 1;
      if (idx >= 0 && idx < taskCount) {
        for (int i = idx; i < taskCount - 1; i++) scheduleList[i] = scheduleList[i + 1];
        taskCount--;
        saveScheduleToSD();
        Serial.println("🗑️ 已刪除");
      }
    }
  }
}
void setup() {
  Serial.begin(115200);
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW);

  if (!SD.begin(5)) {
    Serial.println("❌ SD 卡初始化失敗！請檢查接線或卡是否插入");
  } else {
    Serial.println("✅ SD 卡初始化成功");
    loadSchedule();
  }
/*
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); }

*/
  Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
    configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
  Serial.println("\n🚀 系統啟動成功！指令: time, on, off, toggle, list, add, del");



}
void loop() {
  handleSerial();
  // 定時檢查邏輯
  struct tm timeinfo;
  if (!getLocalTime(&timeinfo)) {
    delay(1000);
    return;
  }

  int currentMinute = timeinfo.tm_hour * 60 + timeinfo.tm_min;

  if (currentMinute != lastCheckedMinute) {
    for (int i = 0; i < taskCount; i++) {
      int taskMinute = scheduleList[i].hr * 60 + scheduleList[i].mn;
      if (taskMinute == currentMinute) {
        digitalWrite(RELAY_PIN, scheduleList[i].state ? HIGH : LOW);
        Serial.printf("\n⏰ 排程觸發: %02d:%02d -> %s\n", 
                      scheduleList[i].hr, scheduleList[i].mn, 
                      scheduleList[i].state ? "ON" : "OFF");
      }
    }
    lastCheckedMinute = currentMinute;
  }

  delay(100);  // 避免 loop 跑太快
}