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import React, { Fragment, type JSX } from 'react'
import Link from 'next/link'
import {
IS_BOLD,
IS_CODE,
IS_ITALIC,
IS_STRIKETHROUGH,
IS_SUBSCRIPT,
IS_SUPERSCRIPT,
IS_UNDERLINE,
} from './node-format'
// Lexical 节点类型
interface LexicalNode {
type: string
format?: number
text?: string
tag?: 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6' | 'ul' | 'ol'
listType?: 'bullet' | 'number' | 'check'
checked?: boolean
value?: number
children?: LexicalNode[]
fields?: {
linkType?: 'internal' | 'custom'
url?: string
newTab?: boolean
doc?: {
value?: {
slug?: string
}
relationTo?: string
}
}
language?: string
version?: number
}
type Props = {
nodes: LexicalNode[]
}
export function serializeLexical({ nodes }: Props): JSX.Element {
return (
<Fragment>
{nodes?.map((node, index): JSX.Element | null => {
if (node == null) {
return null
}
if (node.type === 'text') {
let text = <React.Fragment key={index}>{node.text}</React.Fragment>
const format = node.format || 0
if (format & IS_BOLD) {
text = <strong key={index}>{text}</strong>
}
if (format & IS_ITALIC) {
text = <em key={index}>{text}</em>
}
if (format & IS_STRIKETHROUGH) {
text = (
<span key={index} style={{ textDecoration: 'line-through' }}>
{text}
</span>
)
}
if (format & IS_UNDERLINE) {
text = (
<span key={index} style={{ textDecoration: 'underline' }}>
{text}
</span>
)
}
if (format & IS_CODE) {
text = <code key={index}>{node.text}</code>
}
if (format & IS_SUBSCRIPT) {
text = <sub key={index}>{text}</sub>
}
if (format & IS_SUPERSCRIPT) {
text = <sup key={index}>{text}</sup>
}
return text
}
// 处理子节点
const serializedChildrenFn = (node: LexicalNode): JSX.Element | null => {
if (node.children == null) {
return null
} else {
// 处理 checkbox list
if (node?.type === 'list' && node?.listType === 'check') {
for (const item of node.children) {
if ('checked' in item) {
if (!item?.checked) {
item.checked = false
}
}
}
}
return serializeLexical({ nodes: node.children })
}
}
const serializedChildren = 'children' in node ? serializedChildrenFn(node) : ''
switch (node.type) {
case 'linebreak': {
return <br key={index} />
}
case 'paragraph': {
return <p key={index}>{serializedChildren}</p>
}
case 'heading': {
const Tag = node?.tag || 'h2'
return <Tag key={index}>{serializedChildren}</Tag>
}
case 'list': {
const Tag = node?.tag || 'ul'
return <Tag key={index}>{serializedChildren}</Tag>
}
case 'listitem': {
if (node?.checked != null) {
return (
<li
aria-checked={node.checked ? 'true' : 'false'}
key={index}
role="checkbox"
tabIndex={-1}
value={node?.value}
>
<input
type="checkbox"
checked={node.checked}
readOnly
className="mr-2"
/>
{serializedChildren}
</li>
)
} else {
return (
<li key={index} value={node?.value}>
{serializedChildren}
</li>
)
}
}
case 'quote': {
return <blockquote key={index}>{serializedChildren}</blockquote>
}
case 'link': {
const fields = node.fields
if (fields?.linkType === 'internal' && fields?.doc?.value?.slug) {
const href =
fields.doc.relationTo === 'posts'
? `/posts/${fields.doc.value.slug}`
: `/${fields.doc.value.slug}`
return (
<Link key={index} href={href}>
{serializedChildren}
</Link>
)
}
return (
<a
key={index}
href={fields?.url || '#'}
target={fields?.newTab ? '_blank' : undefined}
rel={fields?.newTab ? 'noopener noreferrer' : undefined}
>
{serializedChildren}
</a>
)
}
case 'code': {
// 代码块
return (
<pre key={index} className="overflow-x-auto">
<code>{serializedChildren}</code>
</pre>
)
}
case 'horizontalrule': {
return <hr key={index} />
}
default:
// 如果有子节点，递归渲染
if (node.children) {
return <Fragment key={index}>{serializedChildren}</Fragment>
}
return null
}
})}
</Fragment>
)
}
|
