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:
zdl
2025-11-14 17:27:12 +08:00
parent 9761ef9016
commit 9fd618c087
6 changed files with 397 additions and 66 deletions

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@@ -1,78 +1,121 @@
// src/components/EventCommentSection/EventCommentSection.js
// src/components/EventCommentSection/EventCommentSection.tsx
/**
*
* TypeScript
* +
* 使 usePagination Hook
*/
import React, { useState, useEffect, useCallback } from 'react';
import React, { useState, useCallback } from 'react';
import {
Box,
VStack,
Heading,
Badge,
HStack,
Divider,
useColorModeValue,
useToast,
Button,
Center,
} from '@chakra-ui/react';
import { useAuth } from '../../contexts/AuthContext';
import { eventService } from '../../services/eventService';
import { logger } from '../../utils/logger';
import { usePagination } from '../../hooks/usePagination';
import type { Comment, CreateCommentParams } from '@/types';
import type { PaginationLoadResult } from '@/types';
import CommentList from './CommentList';
import CommentInput from './CommentInput';
/**
*
* @param {Object} props
* @param {number} props.eventId - ID
* Props
*/
const EventCommentSection = ({ eventId }) => {
interface EventCommentSectionProps {
/** 事件 ID */
eventId: string | number;
}
/**
*
*/
const EventCommentSection: React.FC<EventCommentSectionProps> = ({ eventId }) => {
const { user } = useAuth();
const toast = useToast();
const dividerColor = useColorModeValue('gray.200', 'gray.600');
const headingColor = useColorModeValue('gray.700', 'gray.200');
const sectionBg = useColorModeValue('gray.50', 'gray.750');
// 状态管理
const [comments, setComments] = useState([]);
const [loading, setLoading] = useState(false);
// 评论输入状态
const [commentText, setCommentText] = useState('');
const [submitting, setSubmitting] = useState(false);
const [totalCount, setTotalCount] = useState(0); // 总评论数(从后端获取)
// 加载评论列表
const loadComments = useCallback(async () => {
if (!eventId) return;
setLoading(true);
try {
// 加载第1页每页5条评论
const result = await eventService.getPosts(eventId, 'latest', 1, 5);
if (result.success) {
setComments(result.data || []);
// 保存总评论数(从 pagination.total 读取)
setTotalCount(result.pagination?.total || result.data?.length || 0);
logger.info('EventCommentSection', '评论加载成功', {
/**
*
* @param page
* @param append
* @returns
*/
const loadCommentsFunction = useCallback(
async (page: number, append: boolean): Promise<PaginationLoadResult<Comment>> => {
try {
const result = await eventService.getPosts(
eventId,
count: result.data?.length || 0,
total: result.pagination?.total || 0,
});
}
} catch (error) {
logger.error('EventCommentSection', 'loadComments', error, { eventId });
toast({
title: '加载评论失败',
description: error.message || '请稍后重试',
status: 'error',
duration: 3000,
isClosable: true,
});
} finally {
setLoading(false);
}
}, [eventId, toast]);
'latest',
page,
5 // 每页 5 条评论
);
// 发表评论
if (result.success) {
logger.info('EventCommentSection', '评论加载成功', {
eventId,
page,
count: result.data?.length || 0,
total: result.pagination?.total || 0,
append,
});
return {
data: result.data || [],
pagination: result.pagination,
};
} else {
throw new Error(result.message || '加载评论失败');
}
} catch (error: any) {
logger.error('EventCommentSection', 'loadCommentsFunction', error, {
eventId,
page,
});
toast({
title: '加载评论失败',
description: error.message || '请稍后重试',
status: 'error',
duration: 3000,
isClosable: true,
});
throw error;
}
},
[eventId, toast]
);
// 使用 usePagination Hook
const {
data: comments,
loading,
loadingMore,
hasMore,
totalCount,
loadMore,
setData: setComments,
setTotalCount,
} = usePagination<Comment>(loadCommentsFunction, {
pageSize: 5,
autoLoad: true,
});
/**
*
*/
const handleSubmitComment = useCallback(async () => {
if (!commentText.trim()) {
toast({
@@ -86,14 +129,16 @@ const EventCommentSection = ({ eventId }) => {
setSubmitting(true);
try {
const result = await eventService.createPost(eventId, {
const params: CreateCommentParams = {
content: commentText.trim(),
content_type: 'text',
});
};
const result = await eventService.createPost(eventId, params);
if (result.success) {
// 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
const newComment = {
const newComment: Comment = {
id: result.data?.id || `comment_optimistic_${Date.now()}`,
content: commentText.trim(),
content_type: 'text',
@@ -108,9 +153,9 @@ const EventCommentSection = ({ eventId }) => {
};
// 将新评论追加到列表末尾(最新评论在底部)
setComments([...comments, newComment]);
setComments((prevComments) => [...prevComments, newComment]);
// 总评论数 +1
setTotalCount(totalCount + 1);
setTotalCount((prevTotal) => prevTotal + 1);
toast({
title: '评论发布成功',
@@ -119,7 +164,6 @@ const EventCommentSection = ({ eventId }) => {
isClosable: true,
});
setCommentText(''); // 清空输入框
// ✅ 不再调用 loadComments(),避免 loading 状态导致高度闪烁
logger.info('EventCommentSection', '评论发布成功(乐观更新)', {
eventId,
@@ -129,7 +173,7 @@ const EventCommentSection = ({ eventId }) => {
} else {
throw new Error(result.message || '评论发布失败');
}
} catch (error) {
} catch (error: any) {
logger.error('EventCommentSection', 'handleSubmitComment', error, { eventId });
toast({
title: '评论发布失败',
@@ -141,23 +185,12 @@ const EventCommentSection = ({ eventId }) => {
} finally {
setSubmitting(false);
}
}, [eventId, commentText, toast, comments, user, totalCount]);
// 初始加载评论
useEffect(() => {
loadComments();
}, [loadComments]);
}, [eventId, commentText, toast, user, setComments, setTotalCount]);
return (
<Box>
{/* 标题栏 */}
<HStack
spacing={3}
mb={4}
p={3}
bg={sectionBg}
borderRadius="md"
>
<HStack spacing={3} mb={4} p={3} bg={sectionBg} borderRadius="md">
<Heading size="sm" color={headingColor}>
</Heading>
@@ -173,13 +206,31 @@ const EventCommentSection = ({ eventId }) => {
<CommentList comments={comments} loading={loading} />
</Box>
{/* 加载更多按钮(仅当有更多评论时显示) */}
{hasMore && (
<Center mb={4}>
<Button
variant="outline"
colorScheme="blue"
size="sm"
onClick={loadMore}
isLoading={loadingMore}
loadingText="加载中..."
>
</Button>
</Center>
)}
{/* 评论输入框(仅登录用户显示) */}
{user && (
<Box>
<Divider borderColor={dividerColor} mb={4} />
<CommentInput
value={commentText}
onChange={(e) => setCommentText(e.target.value)}
onChange={(e: React.ChangeEvent<HTMLTextAreaElement>) =>
setCommentText(e.target.value)
}
onSubmit={handleSubmitComment}
isSubmitting={submitting}
maxLength={500}

137
src/hooks/usePagination.ts Normal file
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@@ -0,0 +1,137 @@
/**
* usePagination - 通用分页 Hook
*
* 封装分页逻辑,支持初始加载、加载更多、重置等功能
*
* @example
* const {
* data: comments,
* loading,
* loadingMore,
* hasMore,
* totalCount,
* loadMore,
* setData,
* setTotalCount,
* } = usePagination<Comment>(loadCommentsFunction, { pageSize: 5 });
*/
import { useState, useCallback, useEffect } from 'react';
import type {
LoadFunction,
PaginationLoadResult,
UsePaginationOptions,
UsePaginationResult,
} from '@/types/pagination';
/**
* usePagination Hook
* @template T 数据项类型
* @param loadFunction 加载函数,接收 (page, append) 参数
* @param options 配置选项
* @returns 分页状态和操作方法
*/
export function usePagination<T>(
loadFunction: LoadFunction<T>,
options: UsePaginationOptions = {}
): UsePaginationResult<T> {
const { pageSize = 10, autoLoad = true } = options;
// 状态管理
const [data, setData] = useState<T[]>([]);
const [loading, setLoading] = useState(false);
const [loadingMore, setLoadingMore] = useState(false);
const [currentPage, setCurrentPage] = useState(1);
const [totalCount, setTotalCount] = useState(0);
const [hasMore, setHasMore] = useState(false);
/**
* 加载数据
* @param page 页码
* @param append 是否追加true: 追加false: 替换)
*/
const loadData = useCallback(
async (page: number, append: boolean = false) => {
// 设置加载状态
if (append) {
setLoadingMore(true);
} else {
setLoading(true);
}
try {
const result: PaginationLoadResult<T> = await loadFunction(page, append);
// 更新数据
if (append) {
setData((prevData) => [...prevData, ...(result.data || [])]);
} else {
setData(result.data || []);
}
// 更新分页信息
const total = result.pagination?.total || result.data?.length || 0;
setTotalCount(total);
// 计算是否还有更多数据
const currentTotal = append
? data.length + (result.data?.length || 0)
: result.data?.length || 0;
setHasMore(currentTotal < total);
} catch (error) {
console.error('[usePagination] 加载数据失败:', error);
throw error;
} finally {
if (append) {
setLoadingMore(false);
} else {
setLoading(false);
}
}
},
[loadFunction, data.length]
);
/**
* 加载更多数据
*/
const loadMore = useCallback(async () => {
if (loadingMore || !hasMore) return;
const nextPage = currentPage + 1;
await loadData(nextPage, true);
setCurrentPage(nextPage);
}, [currentPage, loadData, loadingMore, hasMore]);
/**
* 重置到第一页
*/
const reset = useCallback(() => {
setCurrentPage(1);
setData([]);
setTotalCount(0);
setHasMore(false);
loadData(1, false);
}, [loadData]);
// 自动加载第一页
useEffect(() => {
if (autoLoad) {
loadData(1, false);
}
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [autoLoad]);
return {
data,
loading,
loadingMore,
currentPage,
hasMore,
totalCount,
loadMore,
reset,
setData,
setTotalCount,
};
}

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@@ -16,7 +16,7 @@ const commentsStore = new Map();
/**
* 初始化某个事件的 mock 评论列表
* @param {string} eventId - 事件 ID
* @returns {Array} 初始的 8 条 mock 评论
* @returns {Array} 初始的 15 条 mock 评论
*/
const initializeMockComments = (eventId) => {
const comments = [];
@@ -29,6 +29,13 @@ const initializeMockComments = (eventId) => {
{ username: '价值投资者', avatar: null },
{ username: '技术分析师', avatar: null },
{ username: '基本面研究员', avatar: null },
{ username: '量化交易员', avatar: null },
{ username: '市场观察者', avatar: null },
{ username: '行业分析师', avatar: null },
{ username: '财经评论员', avatar: null },
{ username: '趋势跟踪者', avatar: null },
{ username: '价值发现者', avatar: null },
{ username: '理性投资人', avatar: null },
];
const commentTemplates = [
@@ -40,9 +47,16 @@ const initializeMockComments = (eventId) => {
'相关产业链的龙头企业值得重点关注',
'这类事件一般都是短期刺激,长期影响有限',
'建议大家理性对待,不要盲目追高',
'这个消息已经在预期之中,股价可能提前反应了',
'关键要看后续的执行力度和落地速度',
'建议关注产业链上下游的投资机会',
'短期可能会有波动,但长期逻辑依然成立',
'市场情绪很高涨,需要警惕追高风险',
'从历史数据来看,类似事件后续表现都不错',
'这是一个结构性机会,需要精选个股',
];
for (let i = 0; i < 5; i++) {
for (let i = 0; i < 15; i++) {
const hoursAgo = Math.floor(Math.random() * 48) + 1; // 1-48 小时前
const createdAt = new Date(Date.now() - hoursAgo * 60 * 60 * 1000);
const user = users[i % users.length];

42
src/types/comment.ts Normal file
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@@ -0,0 +1,42 @@
/**
* 评论相关类型定义
*/
/**
* 评论作者信息
*/
export interface CommentAuthor {
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';
}

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@@ -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
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@@ -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>>;
}