package com.example.copykamanotes.service.impl;

import com.example.copykamanotes.mapper.NoteCommentMapper;
import com.example.copykamanotes.mapper.NoteMapper;
import com.example.copykamanotes.model.base.ApiResponse;
import com.example.copykamanotes.model.base.EmptyVO;
import com.example.copykamanotes.model.entity.Note;
import com.example.copykamanotes.model.entity.NoteComment;
import com.example.copykamanotes.scope.RequestScopeData;
import com.example.copykamanotes.service.MessageService;
import com.example.copykamanotes.service.NoteCommentService;
import com.example.copykamanotes.utils.ApiResponseUtils;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;

import java.util.Date;
import java.util.List;

@Service
@RequiredArgsConstructor
public class NoteCommentServiceImpl implements NoteCommentService {

    private final NoteCommentMapper noteCommentMapper;
    private final NoteMapper noteMapper;
    private final RequestScopeData requestScopeData;
    private final MessageService messageService;

    @Override
    public ApiResponse<EmptyVO> createComment(Integer noteId, String content) {
        Long userId = requestScopeData.getUserId();

        Note note = noteMapper.findById(noteId);
        if (note == null) {
            return ApiResponseUtils.error("笔记不存在");
        }

        try {
            NoteComment noteComment = new NoteComment();
            noteComment.setNoteId(noteId);
            noteComment.setUserId(userId);
            noteComment.setContent(content);
            noteComment.setCreatedAt(new Date());
            noteComment.setIsDeleted(false);
            noteCommentMapper.insert(noteComment);

            messageService.createMessage(
                    note.getAuthorId(),
                    userId,
                    "note",
                    noteId,
                    "评论了你的笔记"
                    );

            return ApiResponseUtils.success("创建评论成功");

        } catch (Exception e) {
            return ApiResponseUtils.error("创建评论失败");
        }
    }

    @Override
    public ApiResponse<EmptyVO> deleteComment(Integer commentId) {
        Long userId = requestScopeData.getUserId();

        NoteComment noteComment = noteCommentMapper.findById(commentId);
        if (noteComment == null || !noteComment.getUserId().equals(userId)) {
            return ApiResponseUtils.error("没有权限");
        }

        try {
            noteComment.setIsDeleted(true);
            noteComment.setUpdatedAt(new Date());
            noteCommentMapper.update(noteComment);
            return ApiResponseUtils.success("删除成功");
        } catch (Exception e) {
            return ApiResponseUtils.error("删除失败");
        }
    }

    @Override
    public ApiResponse<List<NoteComment>> getComments(Integer noteId) {
        try{
            List<NoteComment> comments = noteCommentMapper.findByNoteId(noteId);
            return ApiResponseUtils.success("获取评论成功", comments);
        } catch (Exception e) {
            return ApiResponseUtils.error("获取评论失败");
        }
    }
}