ArticlesController.java

package edu.ucsb.cs156.example.controllers;

import com.fasterxml.jackson.core.JsonProcessingException;
import edu.ucsb.cs156.example.entities.Articles;
import edu.ucsb.cs156.example.errors.EntityNotFoundException;
import edu.ucsb.cs156.example.repositories.ArticlesRepository;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.validation.Valid;
import java.time.LocalDateTime;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

/** This is a REST controller for Articles */
@Tag(name = "articles")
@RequestMapping("/api/articles")
@RestController
@Slf4j
public class ArticlesController extends ApiController {

  @Autowired ArticlesRepository articlesRepository;

  /**
   * List all articles
   *
   * @return an iterable of Article
   */
  @Operation(summary = "List all articles")
  @PreAuthorize("hasRole('ROLE_USER')")
  @GetMapping("/all")
  public Iterable<Articles> allArticles() {
    Iterable<Articles> articles = articlesRepository.findAll();
    return articles;
  }

  @Operation(summary = "Create a new article")
  @PreAuthorize("hasRole('ROLE_ADMIN')")
  @PostMapping("/post")
  public Articles postArticle(
      @Parameter(name = "title", description = "Title of the article") @RequestParam String title,
      @Parameter(name = "url", description = "URL of the article") @RequestParam String url,
      @Parameter(name = "explanation", description = "Explanation or summary of the article")
          @RequestParam
          String explanation,
      @Parameter(name = "email", description = "Email of the author or submitter") @RequestParam
          String email,
      @Parameter(name = "dateAdded", description = "Date in ISO format (e.g., YYYY-MM-DDTHH:MM:SS)")
          @RequestParam("dateAdded")
          @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
          LocalDateTime dateAdded)
      throws JsonProcessingException {

    // For an explanation of @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
    // See: https://www.baeldung.com/spring-date-parameters

    log.info("dateAdded={}", dateAdded);

    Articles article = new Articles();
    article.setTitle(title);
    article.setUrl(url);
    article.setExplanation(explanation);
    article.setEmail(email);
    article.setDateAdded(dateAdded);

    Articles savedArticle = articlesRepository.save(article);

    return savedArticle;
  }

  @Operation(summary = "Get a single article")
  @PreAuthorize("hasRole('ROLE_USER')")
  @GetMapping("")
  public Articles getById(
      @Parameter(name = "id", description = "the id of the article") @RequestParam Long id) {
    Articles article =
        articlesRepository
            .findById(id)
            .orElseThrow(() -> new EntityNotFoundException(Articles.class, id));

    return article;
  }

  @Operation(summary = "Update a single date")
  @PreAuthorize("hasRole('ROLE_ADMIN')")
  @PutMapping("")
  public Articles updateArticle(
      @Parameter(name = "id", description = "id of the article to update") @RequestParam Long id,
      @RequestBody @Valid Articles incoming) {

    Articles article =
        articlesRepository
            .findById(id)
            .orElseThrow(() -> new EntityNotFoundException(Articles.class, id));

    article.setTitle(incoming.getTitle());
    article.setUrl(incoming.getUrl());
    article.setExplanation(incoming.getExplanation());
    article.setEmail(incoming.getEmail());
    article.setDateAdded(incoming.getDateAdded());

    articlesRepository.save(article);

    return article;
  }

  @Operation(summary = "Delete an Article")
  @PreAuthorize("hasRole('ROLE_ADMIN')")
  @DeleteMapping("")
  public Object deleteArticle(
      @Parameter(name = "id", description = "the id of the article to delete") @RequestParam
          Long id) {
    Articles article =
        articlesRepository
            .findById(id)
            .orElseThrow(() -> new EntityNotFoundException(Articles.class, id));

    articlesRepository.delete(article);
    return genericMessage("Articles with id %s deleted".formatted(id));
  }
}