feat: add Telegram bot with notifications and scheduler

internal/scheduler/scheduler.go

@@ -0,0 +1,195 @@
+package scheduler
+
+import (
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/robfig/cron/v3"
+	"github.com/daniil/homelab-api/internal/bot"
+	"github.com/daniil/homelab-api/internal/model"
+	"github.com/daniil/homelab-api/internal/repository"
+)
+
+type Scheduler struct {
+	cron      *cron.Cron
+	bot       *bot.Bot
+	userRepo  *repository.UserRepository
+	taskRepo  *repository.TaskRepository
+	habitRepo *repository.HabitRepository
+}
+
+func New(b *bot.Bot, userRepo *repository.UserRepository, taskRepo *repository.TaskRepository, habitRepo *repository.HabitRepository) *Scheduler {
+	return &Scheduler{
+		cron:      cron.New(),
+		bot:       b,
+		userRepo:  userRepo,
+		taskRepo:  taskRepo,
+		habitRepo: habitRepo,
+	}
+}
+
+func (s *Scheduler) Start() {
+	if s.bot == nil || s.bot.GetAPI() == nil {
+		log.Println("Scheduler: bot not configured, skipping")
+		return
+	}
+
+	// Run every minute
+	s.cron.AddFunc("* * * * *", s.checkNotifications)
+
+	s.cron.Start()
+	log.Println("Scheduler started")
+}
+
+func (s *Scheduler) Stop() {
+	s.cron.Stop()
+}
+
+func (s *Scheduler) checkNotifications() {
+	users, err := s.userRepo.GetUsersWithNotifications()
+	if err != nil {
+		log.Printf("Scheduler: error getting users: %v", err)
+		return
+	}
+
+	for _, user := range users {
+		go s.checkUserNotifications(user)
+	}
+}
+
+func (s *Scheduler) checkUserNotifications(user model.User) {
+	if !user.TelegramChatID.Valid {
+		return
+	}
+
+	chatID := user.TelegramChatID.Int64
+	
+	// Get user timezone
+	loc, err := time.LoadLocation(user.Timezone)
+	if err != nil {
+		loc = time.FixedZone("Europe/Moscow", 3*60*60)
+	}
+
+	now := time.Now().In(loc)
+	currentTime := now.Format("15:04")
+	today := now.Format("2006-01-02")
+	weekday := int(now.Weekday())
+
+	// 1. Morning briefing at 09:00
+	if currentTime == "09:00" {
+		s.sendMorningBriefing(user.ID, chatID, loc)
+	}
+
+	// 2. Task reminders
+	s.checkTaskReminders(user.ID, chatID, currentTime, today)
+
+	// 3. Habit reminders
+	s.checkHabitReminders(user.ID, chatID, currentTime, weekday)
+}
+
+func (s *Scheduler) sendMorningBriefing(userID, chatID int64, loc *time.Location) {
+	tasks, err := s.taskRepo.GetTodayTasks(userID)
+	if err != nil {
+		log.Printf("Scheduler: error getting tasks for user %d: %v", userID, err)
+		return
+	}
+
+	habits, err := s.habitRepo.ListByUser(userID, false)
+	if err != nil {
+		log.Printf("Scheduler: error getting habits for user %d: %v", userID, err)
+		return
+	}
+
+	// Filter habits for today
+	weekday := int(time.Now().In(loc).Weekday())
+	var todayHabits int
+	for _, habit := range habits {
+		if habit.Frequency == "daily" {
+			todayHabits++
+		} else {
+			for _, day := range habit.TargetDays {
+				if day == weekday {
+					todayHabits++
+					break
+				}
+			}
+		}
+	}
+
+	if len(tasks) == 0 && todayHabits == 0 {
+		return // Nothing to report
+	}
+
+	text := "☀️ <b>Доброе утро!</b>\n\n"
+	
+	if len(tasks) > 0 {
+		text += fmt.Sprintf("📋 Задач на сегодня: <b>%d</b>\n", len(tasks))
+		for i, task := range tasks {
+			if i >= 3 {
+				text += fmt.Sprintf("   ... и ещё %d\n", len(tasks)-3)
+				break
+			}
+			text += fmt.Sprintf("   • %s %s\n", task.Icon, task.Title)
+		}
+		text += "\n"
+	}
+
+	if todayHabits > 0 {
+		text += fmt.Sprintf("🎯 Привычек: <b>%d</b>\n", todayHabits)
+	}
+
+	text += "\n/tasks — посмотреть задачи\n/habits — посмотреть привычки"
+
+	s.bot.SendMessage(chatID, text)
+}
+
+func (s *Scheduler) checkTaskReminders(userID, chatID int64, currentTime, today string) {
+	tasks, err := s.taskRepo.GetTasksWithReminder(currentTime, today)
+	if err != nil {
+		log.Printf("Scheduler: error getting task reminders: %v", err)
+		return
+	}
+
+	for _, task := range tasks {
+		if task.UserID != userID {
+			continue
+		}
+
+		text := fmt.Sprintf("⏰ <b>Напоминание о задаче:</b>\n\n%s <b>%s</b>", task.Icon, task.Title)
+		if task.Description != "" {
+			text += fmt.Sprintf("\n<i>%s</i>", task.Description)
+		}
+		text += fmt.Sprintf("\n\n/done_%d — отметить выполненной", task.ID)
+
+		s.bot.SendMessage(chatID, text)
+	}
+}
+
+func (s *Scheduler) checkHabitReminders(userID, chatID int64, currentTime string, weekday int) {
+	habits, err := s.habitRepo.GetHabitsWithReminder(currentTime, weekday)
+	if err != nil {
+		log.Printf("Scheduler: error getting habit reminders: %v", err)
+		return
+	}
+
+	for _, habit := range habits {
+		if habit.UserID != userID {
+			continue
+		}
+
+		// Check if already completed today
+		completed, _ := s.habitRepo.IsHabitCompletedToday(habit.ID, userID)
+		if completed {
+			continue
+		}
+
+		text := fmt.Sprintf("⏰ <b>Напоминание о привычке:</b>\n\n%s <b>%s</b>", habit.Icon, habit.Name)
+		if habit.Description != "" {
+			text += fmt.Sprintf("\n<i>%s</i>", habit.Description)
+		}
+		text += fmt.Sprintf("\n\n/check_%d — отметить выполненной", habit.ID)
+
+		s.bot.SendMessage(chatID, text)
+	}
+}