package service

import (
	"time"

	"github.com/sundynix/pets-be/internal/model"
)

// ReminderInput 提醒入参
type ReminderInput struct {
	Type        string
	Title       string
	NextDueDate *time.Time
	Frequency   string
}

// ListReminders 宠物的提醒列表
func (s *Service) ListReminders(userID, petID uint) ([]model.Reminder, error) {
	if _, err := s.ownedPet(userID, petID); err != nil {
		return nil, err
	}
	var reminders []model.Reminder
	err := s.db.Where("pet_id = ?", petID).Order("id asc").Find(&reminders).Error
	return reminders, err
}

// CreateReminder 新增提醒
func (s *Service) CreateReminder(userID, petID uint, in ReminderInput) (*model.Reminder, error) {
	if _, err := s.ownedPet(userID, petID); err != nil {
		return nil, err
	}
	r := model.Reminder{
		PetID: petID, UserID: userID, Type: in.Type, Title: in.Title,
		NextDueDate: in.NextDueDate, Frequency: in.Frequency,
	}
	if err := s.db.Create(&r).Error; err != nil {
		return nil, err
	}
	return &r, nil
}

// UpdateReminder 更新提醒
func (s *Service) UpdateReminder(userID, reminderID uint, fields map[string]any) (*model.Reminder, error) {
	var r model.Reminder
	if err := s.db.Where("id = ? AND user_id = ?", reminderID, userID).First(&r).Error; err != nil {
		return nil, ErrNotFound
	}
	if err := s.db.Model(&r).Updates(fields).Error; err != nil {
		return nil, err
	}
	return &r, nil
}

// DeleteReminder 删除提醒
func (s *Service) DeleteReminder(userID, reminderID uint) error {
	res := s.db.Where("id = ? AND user_id = ?", reminderID, userID).Delete(&model.Reminder{})
	if res.Error != nil {
		return res.Error
	}
	if res.RowsAffected == 0 {
		return ErrNotFound
	}
	return nil
}