feat: 实现评论分页功能并迁移到 TypeScript
- 创建通用分页 Hook (usePagination.ts) 支持任意数据类型 - 将 EventCommentSection 迁移到 TypeScript (.tsx) - 添加"加载更多"按钮,支持增量加载评论 - 创建分页和评论相关类型定义 (pagination.ts, comment.ts) - 增加 Mock 评论数据从 5 条到 15 条,便于测试分页 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
@@ -1,78 +1,121 @@
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// src/components/EventCommentSection/EventCommentSection.js
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// src/components/EventCommentSection/EventCommentSection.tsx
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/**
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* 事件评论区主组件
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* 事件评论区主组件(TypeScript 版本)
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* 功能:整合评论列表 + 评论输入框,管理评论数据
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* 使用 usePagination Hook 实现分页功能
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*/
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import React, { useState, useEffect, useCallback } from 'react';
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import React, { useState, useCallback } from 'react';
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import {
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Box,
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VStack,
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Heading,
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Badge,
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HStack,
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Divider,
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useColorModeValue,
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useToast,
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Button,
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Center,
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} from '@chakra-ui/react';
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import { useAuth } from '../../contexts/AuthContext';
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import { eventService } from '../../services/eventService';
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import { logger } from '../../utils/logger';
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import { usePagination } from '../../hooks/usePagination';
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import type { Comment, CreateCommentParams } from '@/types';
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import type { PaginationLoadResult } from '@/types';
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import CommentList from './CommentList';
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import CommentInput from './CommentInput';
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/**
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* 事件评论区组件
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* @param {Object} props
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* @param {number} props.eventId - 事件 ID
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* 组件 Props
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*/
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const EventCommentSection = ({ eventId }) => {
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interface EventCommentSectionProps {
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/** 事件 ID */
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eventId: string | number;
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}
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/**
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* 事件评论区组件
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*/
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const EventCommentSection: React.FC<EventCommentSectionProps> = ({ eventId }) => {
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const { user } = useAuth();
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const toast = useToast();
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const dividerColor = useColorModeValue('gray.200', 'gray.600');
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const headingColor = useColorModeValue('gray.700', 'gray.200');
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const sectionBg = useColorModeValue('gray.50', 'gray.750');
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// 状态管理
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const [comments, setComments] = useState([]);
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const [loading, setLoading] = useState(false);
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// 评论输入状态
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const [commentText, setCommentText] = useState('');
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const [submitting, setSubmitting] = useState(false);
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const [totalCount, setTotalCount] = useState(0); // 总评论数(从后端获取)
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// 加载评论列表
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const loadComments = useCallback(async () => {
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if (!eventId) return;
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setLoading(true);
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try {
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// 加载第1页,每页5条评论
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const result = await eventService.getPosts(eventId, 'latest', 1, 5);
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if (result.success) {
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setComments(result.data || []);
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// 保存总评论数(从 pagination.total 读取)
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setTotalCount(result.pagination?.total || result.data?.length || 0);
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logger.info('EventCommentSection', '评论加载成功', {
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/**
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* 加载评论数据的函数
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* @param page 页码
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* @param append 是否追加到已有数据
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* @returns 分页响应数据
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*/
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const loadCommentsFunction = useCallback(
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async (page: number, append: boolean): Promise<PaginationLoadResult<Comment>> => {
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try {
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const result = await eventService.getPosts(
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eventId,
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count: result.data?.length || 0,
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total: result.pagination?.total || 0,
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});
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}
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} catch (error) {
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logger.error('EventCommentSection', 'loadComments', error, { eventId });
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toast({
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title: '加载评论失败',
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description: error.message || '请稍后重试',
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status: 'error',
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duration: 3000,
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isClosable: true,
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});
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} finally {
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setLoading(false);
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}
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}, [eventId, toast]);
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'latest',
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page,
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5 // 每页 5 条评论
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);
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// 发表评论
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if (result.success) {
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logger.info('EventCommentSection', '评论加载成功', {
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eventId,
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page,
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count: result.data?.length || 0,
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total: result.pagination?.total || 0,
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append,
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});
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return {
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data: result.data || [],
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pagination: result.pagination,
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};
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} else {
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throw new Error(result.message || '加载评论失败');
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}
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} catch (error: any) {
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logger.error('EventCommentSection', 'loadCommentsFunction', error, {
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eventId,
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page,
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});
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toast({
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title: '加载评论失败',
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description: error.message || '请稍后重试',
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status: 'error',
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duration: 3000,
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isClosable: true,
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});
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throw error;
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}
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},
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[eventId, toast]
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);
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// 使用 usePagination Hook
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const {
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data: comments,
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loading,
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loadingMore,
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hasMore,
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totalCount,
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loadMore,
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setData: setComments,
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setTotalCount,
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} = usePagination<Comment>(loadCommentsFunction, {
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pageSize: 5,
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autoLoad: true,
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});
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/**
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* 发表评论
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*/
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const handleSubmitComment = useCallback(async () => {
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if (!commentText.trim()) {
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toast({
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@@ -86,14 +129,16 @@ const EventCommentSection = ({ eventId }) => {
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setSubmitting(true);
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try {
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const result = await eventService.createPost(eventId, {
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const params: CreateCommentParams = {
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content: commentText.trim(),
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content_type: 'text',
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});
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};
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const result = await eventService.createPost(eventId, params);
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if (result.success) {
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// 乐观更新:立即将新评论添加到本地 state,避免重新加载导致的闪烁
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const newComment = {
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const newComment: Comment = {
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id: result.data?.id || `comment_optimistic_${Date.now()}`,
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content: commentText.trim(),
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content_type: 'text',
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@@ -108,9 +153,9 @@ const EventCommentSection = ({ eventId }) => {
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};
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// 将新评论追加到列表末尾(最新评论在底部)
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setComments([...comments, newComment]);
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setComments((prevComments) => [...prevComments, newComment]);
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// 总评论数 +1
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setTotalCount(totalCount + 1);
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setTotalCount((prevTotal) => prevTotal + 1);
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toast({
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title: '评论发布成功',
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@@ -119,7 +164,6 @@ const EventCommentSection = ({ eventId }) => {
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isClosable: true,
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});
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setCommentText(''); // 清空输入框
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// ✅ 不再调用 loadComments(),避免 loading 状态导致高度闪烁
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logger.info('EventCommentSection', '评论发布成功(乐观更新)', {
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eventId,
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@@ -129,7 +173,7 @@ const EventCommentSection = ({ eventId }) => {
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} else {
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throw new Error(result.message || '评论发布失败');
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}
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} catch (error) {
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} catch (error: any) {
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logger.error('EventCommentSection', 'handleSubmitComment', error, { eventId });
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toast({
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title: '评论发布失败',
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@@ -141,23 +185,12 @@ const EventCommentSection = ({ eventId }) => {
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} finally {
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setSubmitting(false);
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}
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}, [eventId, commentText, toast, comments, user, totalCount]);
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// 初始加载评论
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useEffect(() => {
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loadComments();
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}, [loadComments]);
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}, [eventId, commentText, toast, user, setComments, setTotalCount]);
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return (
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<Box>
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{/* 标题栏 */}
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<HStack
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spacing={3}
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mb={4}
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p={3}
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bg={sectionBg}
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borderRadius="md"
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>
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<HStack spacing={3} mb={4} p={3} bg={sectionBg} borderRadius="md">
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<Heading size="sm" color={headingColor}>
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讨论区
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</Heading>
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@@ -173,13 +206,31 @@ const EventCommentSection = ({ eventId }) => {
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<CommentList comments={comments} loading={loading} />
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</Box>
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{/* 加载更多按钮(仅当有更多评论时显示) */}
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{hasMore && (
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<Center mb={4}>
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<Button
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variant="outline"
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colorScheme="blue"
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size="sm"
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onClick={loadMore}
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isLoading={loadingMore}
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loadingText="加载中..."
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>
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加载更多评论
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</Button>
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</Center>
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)}
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{/* 评论输入框(仅登录用户显示) */}
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{user && (
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<Box>
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<Divider borderColor={dividerColor} mb={4} />
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<CommentInput
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value={commentText}
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onChange={(e) => setCommentText(e.target.value)}
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onChange={(e: React.ChangeEvent<HTMLTextAreaElement>) =>
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setCommentText(e.target.value)
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}
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onSubmit={handleSubmitComment}
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isSubmitting={submitting}
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maxLength={500}
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137
src/hooks/usePagination.ts
Normal file
137
src/hooks/usePagination.ts
Normal file
@@ -0,0 +1,137 @@
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/**
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* usePagination - 通用分页 Hook
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*
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* 封装分页逻辑,支持初始加载、加载更多、重置等功能
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*
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* @example
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* const {
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* data: comments,
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* loading,
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* loadingMore,
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* hasMore,
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* totalCount,
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* loadMore,
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* setData,
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* setTotalCount,
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* } = usePagination<Comment>(loadCommentsFunction, { pageSize: 5 });
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*/
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import { useState, useCallback, useEffect } from 'react';
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import type {
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LoadFunction,
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PaginationLoadResult,
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UsePaginationOptions,
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UsePaginationResult,
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} from '@/types/pagination';
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/**
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* usePagination Hook
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* @template T 数据项类型
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* @param loadFunction 加载函数,接收 (page, append) 参数
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* @param options 配置选项
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* @returns 分页状态和操作方法
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*/
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export function usePagination<T>(
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loadFunction: LoadFunction<T>,
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options: UsePaginationOptions = {}
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): UsePaginationResult<T> {
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const { pageSize = 10, autoLoad = true } = options;
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// 状态管理
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const [data, setData] = useState<T[]>([]);
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const [loading, setLoading] = useState(false);
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const [loadingMore, setLoadingMore] = useState(false);
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const [currentPage, setCurrentPage] = useState(1);
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const [totalCount, setTotalCount] = useState(0);
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const [hasMore, setHasMore] = useState(false);
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/**
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* 加载数据
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* @param page 页码
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* @param append 是否追加(true: 追加,false: 替换)
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*/
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const loadData = useCallback(
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async (page: number, append: boolean = false) => {
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// 设置加载状态
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if (append) {
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setLoadingMore(true);
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} else {
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setLoading(true);
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}
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try {
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const result: PaginationLoadResult<T> = await loadFunction(page, append);
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// 更新数据
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if (append) {
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setData((prevData) => [...prevData, ...(result.data || [])]);
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} else {
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setData(result.data || []);
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}
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// 更新分页信息
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const total = result.pagination?.total || result.data?.length || 0;
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setTotalCount(total);
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// 计算是否还有更多数据
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const currentTotal = append
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? data.length + (result.data?.length || 0)
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: result.data?.length || 0;
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setHasMore(currentTotal < total);
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} catch (error) {
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console.error('[usePagination] 加载数据失败:', error);
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throw error;
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} finally {
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if (append) {
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setLoadingMore(false);
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} else {
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setLoading(false);
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}
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}
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},
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[loadFunction, data.length]
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);
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/**
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* 加载更多数据
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*/
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const loadMore = useCallback(async () => {
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if (loadingMore || !hasMore) return;
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const nextPage = currentPage + 1;
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await loadData(nextPage, true);
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setCurrentPage(nextPage);
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}, [currentPage, loadData, loadingMore, hasMore]);
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/**
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* 重置到第一页
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*/
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const reset = useCallback(() => {
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setCurrentPage(1);
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setData([]);
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setTotalCount(0);
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setHasMore(false);
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loadData(1, false);
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}, [loadData]);
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// 自动加载第一页
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useEffect(() => {
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if (autoLoad) {
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loadData(1, false);
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}
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, [autoLoad]);
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return {
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data,
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loading,
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loadingMore,
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currentPage,
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hasMore,
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totalCount,
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loadMore,
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reset,
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setData,
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setTotalCount,
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};
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}
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@@ -16,7 +16,7 @@ const commentsStore = new Map();
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/**
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* 初始化某个事件的 mock 评论列表
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* @param {string} eventId - 事件 ID
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* @returns {Array} 初始的 8 条 mock 评论
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* @returns {Array} 初始的 15 条 mock 评论
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*/
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const initializeMockComments = (eventId) => {
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const comments = [];
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@@ -29,6 +29,13 @@ const initializeMockComments = (eventId) => {
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{ username: '价值投资者', avatar: null },
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{ username: '技术分析师', avatar: null },
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{ username: '基本面研究员', avatar: null },
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{ username: '量化交易员', avatar: null },
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{ username: '市场观察者', avatar: null },
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{ username: '行业分析师', avatar: null },
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{ username: '财经评论员', avatar: null },
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{ username: '趋势跟踪者', avatar: null },
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{ username: '价值发现者', avatar: null },
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{ username: '理性投资人', avatar: null },
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];
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const commentTemplates = [
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@@ -40,9 +47,16 @@ const initializeMockComments = (eventId) => {
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'相关产业链的龙头企业值得重点关注',
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'这类事件一般都是短期刺激,长期影响有限',
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'建议大家理性对待,不要盲目追高',
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'这个消息已经在预期之中,股价可能提前反应了',
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'关键要看后续的执行力度和落地速度',
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'建议关注产业链上下游的投资机会',
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'短期可能会有波动,但长期逻辑依然成立',
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'市场情绪很高涨,需要警惕追高风险',
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'从历史数据来看,类似事件后续表现都不错',
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'这是一个结构性机会,需要精选个股',
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];
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for (let i = 0; i < 5; i++) {
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for (let i = 0; i < 15; i++) {
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const hoursAgo = Math.floor(Math.random() * 48) + 1; // 1-48 小时前
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const createdAt = new Date(Date.now() - hoursAgo * 60 * 60 * 1000);
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const user = users[i % users.length];
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42
src/types/comment.ts
Normal file
42
src/types/comment.ts
Normal file
@@ -0,0 +1,42 @@
|
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/**
|
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* 评论相关类型定义
|
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*/
|
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|
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/**
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* 评论作者信息
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||||
*/
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export interface CommentAuthor {
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id: string;
|
||||
username: string;
|
||||
avatar?: string | null;
|
||||
}
|
||||
|
||||
/**
|
||||
* 评论数据结构
|
||||
*/
|
||||
export interface Comment {
|
||||
/** 评论 ID */
|
||||
id: string;
|
||||
/** 评论内容 */
|
||||
content: string;
|
||||
/** 内容类型 */
|
||||
content_type: 'text' | 'image' | 'video';
|
||||
/** 作者信息 */
|
||||
author: CommentAuthor;
|
||||
/** 创建时间(ISO 8601 格式) */
|
||||
created_at: string;
|
||||
/** 点赞数 */
|
||||
likes_count: number;
|
||||
/** 当前用户是否已点赞 */
|
||||
is_liked: boolean;
|
||||
}
|
||||
|
||||
/**
|
||||
* 创建评论请求参数
|
||||
*/
|
||||
export interface CreateCommentParams {
|
||||
/** 评论内容 */
|
||||
content: string;
|
||||
/** 内容类型 */
|
||||
content_type?: 'text' | 'image' | 'video';
|
||||
}
|
||||
@@ -38,3 +38,18 @@ export type {
|
||||
UserAccount,
|
||||
UserSettings,
|
||||
} from './user';
|
||||
|
||||
// 分页相关类型
|
||||
export type {
|
||||
LoadFunction,
|
||||
PaginationLoadResult,
|
||||
UsePaginationOptions,
|
||||
UsePaginationResult,
|
||||
} from './pagination';
|
||||
|
||||
// 评论相关类型
|
||||
export type {
|
||||
Comment,
|
||||
CommentAuthor,
|
||||
CreateCommentParams,
|
||||
} from './comment';
|
||||
|
||||
72
src/types/pagination.ts
Normal file
72
src/types/pagination.ts
Normal file
@@ -0,0 +1,72 @@
|
||||
/**
|
||||
* 分页相关类型定义
|
||||
*
|
||||
* 用于 usePagination Hook 和其他分页功能
|
||||
*/
|
||||
|
||||
/**
|
||||
* 分页加载函数类型
|
||||
* @template T 数据项类型
|
||||
* @param page 页码(从 1 开始)
|
||||
* @param append 是否追加到已有数据(true: 追加,false: 替换)
|
||||
* @returns Promise,解析为分页响应数据
|
||||
*/
|
||||
export type LoadFunction<T> = (
|
||||
page: number,
|
||||
append: boolean
|
||||
) => Promise<PaginationLoadResult<T>>;
|
||||
|
||||
/**
|
||||
* 分页加载结果
|
||||
* @template T 数据项类型
|
||||
*/
|
||||
export interface PaginationLoadResult<T> {
|
||||
/** 数据列表 */
|
||||
data: T[];
|
||||
/** 分页信息 */
|
||||
pagination?: {
|
||||
/** 总数据量 */
|
||||
total?: number;
|
||||
/** 当前页码 */
|
||||
page?: number;
|
||||
/** 每页数量 */
|
||||
per_page?: number;
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* usePagination Hook 配置选项
|
||||
*/
|
||||
export interface UsePaginationOptions {
|
||||
/** 每页数据量,默认 10 */
|
||||
pageSize?: number;
|
||||
/** 是否自动加载第一页,默认 true */
|
||||
autoLoad?: boolean;
|
||||
}
|
||||
|
||||
/**
|
||||
* usePagination Hook 返回值
|
||||
* @template T 数据项类型
|
||||
*/
|
||||
export interface UsePaginationResult<T> {
|
||||
/** 当前数据列表 */
|
||||
data: T[];
|
||||
/** 是否正在加载第一页 */
|
||||
loading: boolean;
|
||||
/** 是否正在加载更多 */
|
||||
loadingMore: boolean;
|
||||
/** 当前页码 */
|
||||
currentPage: number;
|
||||
/** 是否还有更多数据 */
|
||||
hasMore: boolean;
|
||||
/** 总数据量 */
|
||||
totalCount: number;
|
||||
/** 加载更多数据 */
|
||||
loadMore: () => Promise<void>;
|
||||
/** 重置到第一页 */
|
||||
reset: () => void;
|
||||
/** 手动设置数据(用于乐观更新) */
|
||||
setData: React.Dispatch<React.SetStateAction<T[]>>;
|
||||
/** 手动设置总数(用于乐观更新) */
|
||||
setTotalCount: React.Dispatch<React.SetStateAction<number>>;
|
||||
}
|
||||
Reference in New Issue
Block a user