package com.gcsc.guide.service;

import com.gcsc.guide.dto.LoginHistoryResponse;
import com.gcsc.guide.entity.LoginHistory;
import com.gcsc.guide.entity.PageView;
import com.gcsc.guide.entity.User;
import com.gcsc.guide.exception.ResourceNotFoundException;
import com.gcsc.guide.repository.LoginHistoryRepository;
import com.gcsc.guide.repository.PageViewRepository;
import com.gcsc.guide.repository.UserRepository;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
@RequiredArgsConstructor
public class ActivityService {

    private final LoginHistoryRepository loginHistoryRepository;
    private final PageViewRepository pageViewRepository;
    private final UserRepository userRepository;

    @Transactional
    public void recordLogin(Long userId, String ipAddress, String userAgent) {
        User user = userRepository.findById(userId)
            .orElseThrow(() -> new ResourceNotFoundException("사용자", userId));
        loginHistoryRepository.save(new LoginHistory(user, ipAddress, userAgent));
    }

    @Transactional
    public void trackPageView(Long userId, String pagePath) {
        User user = userRepository.findById(userId)
            .orElseThrow(() -> new ResourceNotFoundException("사용자", userId));
        pageViewRepository.save(new PageView(user, pagePath));
    }

    @Transactional(readOnly = true)
    public List<LoginHistoryResponse> getLoginHistory(Long userId) {
        return loginHistoryRepository.findByUserIdOrderByLoginAtDesc(userId).stream()
            .map(LoginHistoryResponse::from)
            .toList();
    }
}