package com.guams.review.service;


import com.guams.review.model.AuthorRepository;
import com.guams.review.model.dao.Post;
import com.guams.review.model.PostRepository;
import com.guams.review.model.dao.PostWithAuthor;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.Optional;
import java.util.UUID;

@Service
@RequiredArgsConstructor
public class PostService
{
    private final PostRepository postRepository;
    private final AuthorRepository authorRepository;

    public List<Post> list() {
        return postRepository.findAll();
    }

    public Optional<Post> findById(Long id) {
        return postRepository.findById(id);
    }

    public List<PostWithAuthor> listWithAuthors() {
        return postRepository.findPostsWithAuthors();
    }

    public Post insert(Post post) {
        return postRepository.save(post);
    }

    @Transactional
    public void delete(UUID authorId, Long postId) {
        authorRepository.deletePublication(authorId, postId);
        postRepository.deleteById(postId);
    }

}