package server

import (
	"context"
	"log/slog"
	"time"

	"chat-agent-system/internal/errcode"
)

const defaultReminderPollInterval = 15 * time.Minute

func (s *Server) startNotificationReminderLoop() {
	if s == nil || s.notifySvc() == nil || !s.notifySvc().Available() {
		return
	}
	stopCh, ok := s.reminderLoop.start()
	if !ok {
		return
	}
	go func() {
		ticker := time.NewTicker(defaultReminderPollInterval)
		defer ticker.Stop()
		s.runStageAdvanceReminders(context.Background())
		for {
			select {
			case <-stopCh:
				return
			case <-ticker.C:
				s.runStageAdvanceReminders(context.Background())
			}
		}
	}()
}

func (s *Server) runStageAdvanceReminders(ctx context.Context) {
	if s.notifySvc() == nil || !s.notifySvc().Available() {
		return
	}
	n, err := s.notifySvc().ProcessStageAdvanceReminders(ctx)
	if err != nil {
		slog.Warn("stage advance reminder scan failed", "error", err)
		errcode.Report(ctx, errcode.Event{
			Code:     "REMINDER_SCAN_FAILED",
			Module:   "notification",
			Source:   "async",
			Upstream: err.Error(),
		})
		return
	}
	if n > 0 {
		slog.Info("stage advance 24h reminders sent", "count", n)
	}
}