backend/src/main/java/nju/seec/helper/controller/CommentController.java

package nju.seec.helper.controller;

import nju.seec.helper.api.dataanalysis.constant.EventAction;
import nju.seec.helper.api.dataanalysis.constant.EventType;
import nju.seec.helper.aspect.auth.Auth;
import nju.seec.helper.aspect.auth.LoginUser;
import nju.seec.helper.aspect.event.Event;
import nju.seec.helper.controller.response.PageResponse;
import nju.seec.helper.dto.comment.CommentDTO;
import nju.seec.helper.enums.UserRole;
import nju.seec.helper.service.CommentService;
import nju.seec.helper.util.JsonUtils;
import nju.seec.helper.vo.CommentVO;
import org.springframework.data.domain.Pageable;
import org.springframework.data.web.PageableDefault;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import javax.validation.constraints.NotNull;

/**
 * 评论
 *
 * @author cst
 */
@Validated
@RestController
@RequestMapping("/api/comment")
public class CommentController {
    private final CommentService commentService;

    public CommentController(CommentService commentService) {
        this.commentService = commentService;
    }

    /**
     * 发表评论
     */
    @Event(type = EventType.POST, action = EventAction.INITIATE)
    @Auth(roles = {UserRole.TEACHER, UserRole.STUDENT}, message = "发表评论")
    @PostMapping
    public CommentVO createComment(LoginUser user,
                                   @Validated @RequestBody CommentDTO commentDTO) {
        CommentVO commentVO = commentService.createComment(user, commentDTO);
        CommentWebsocket.sendAllMessageToOneSlide(commentDTO.getSlideId(), JsonUtils.toJson(commentVO));
        return commentVO;
    }

    /**
     * 删除评论
     */
    @Auth(roles = {UserRole.TEACHER, UserRole.STUDENT}, message = "删除评论")
    @DeleteMapping("/{commentId}")
    public void deleteComment(LoginUser user,
                              @PathVariable Long commentId) {
        commentService.deleteComment(user, commentId);
    }

    /**
     * 教师置顶评论
     */
    @Auth(roles = UserRole.TEACHER, message = "置顶评论")
    @PostMapping("/{commentId}/top")
    public void topComment(LoginUser user,
                           @PathVariable Long commentId) {
        commentService.topComment(user, commentId);
    }

    /**
     * 教师取消置顶评论
     */
    @Auth(roles = UserRole.TEACHER, message = "取消置顶评论")
    @PostMapping("/{commentId}/unTop")
    public void unTopComment(LoginUser user,
                             @PathVariable Long commentId) {
        commentService.unTopComment(user, commentId);
    }

    /**
     * 取得某一页的评论信息
     */
    @Auth(roles = {UserRole.TEACHER, UserRole.STUDENT}, message = "获取评论")
    @GetMapping("/slide/{slideId}")
    public PageResponse<CommentVO> getComments(@PathVariable Long slideId,
                                               @RequestParam(required = false, defaultValue = "1") Integer pageNumber,
                                               @PageableDefault(Integer.MAX_VALUE) Pageable pageable) {
        return PageResponse.of(commentService.getCommentsBySlideAndPageNumber(slideId, pageNumber, pageable));
    }

    /**
     * 取得某一评论
     */
    @Auth(roles = {UserRole.TEACHER, UserRole.STUDENT}, message = "获取评论")
    @GetMapping("/{commentId}")
    public CommentVO getOneComment(LoginUser user, @PathVariable Long commentId) {
        return commentService.getOneComment(user, commentId);
    }

    /**
     * 取得自己某一页的评论
     */
    @Auth(roles = {UserRole.TEACHER, UserRole.STUDENT}, message = "获取自己的评论")
    @GetMapping("/slide/{slideId}/self")
    public PageResponse<CommentVO> getSelfComments(LoginUser user,
                                                   @PathVariable Long slideId,
                                                   @RequestParam(required = false, defaultValue = "1") Integer pageNumber,
                                                   @RequestParam(required = false, defaultValue = "true") Boolean show,
                                                   @PageableDefault(Integer.MAX_VALUE) Pageable pageable) {
        return PageResponse.of(commentService.getSelfCommentsBySlideAndPageNumber(user, slideId, pageNumber, show, pageable));
    }

    /**
     * 修改评论的展示状态
     */
    @Auth(roles = {UserRole.TEACHER, UserRole.STUDENT}, message = "修改评论展示状态")
    @PutMapping("/{commentId}/show")
    public void modifyCommentShow(LoginUser user,
                                  @PathVariable Long commentId,
                                  @NotNull(message = "缺少展示状态") Boolean show) {
        commentService.modifyCommentShow(user, commentId, show);
    }
}