feat: implement Kefu message list component and related functionality
- Add KefuMessageList component for displaying chat messages with support for loading older messages and scrolling behavior. - Introduce ImWidgetConfig type and fetchImWidgetConfig function for retrieving widget configuration. - Create im-realtime module for managing WebSocket connections and handling real-time events. - Implement kefu-host-bridge for communication between the chat widget and the host application. - Establish kefu-chat store using Zustand for managing chat state, including message handling, socket connection, and notifications. - Enhance message handling with support for image uploads and attachments.
This commit is contained in:
mlogclub
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"use client"
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import { useEffect, useRef, useState } from "react"
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import { EditorContent, useEditor } from "@tiptap/react"
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import Image from "@tiptap/extension-image"
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import Placeholder from "@tiptap/extension-placeholder"
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import StarterKit from "@tiptap/starter-kit"
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import { ImageIcon, PaperclipIcon, SendHorizonalIcon } from "lucide-react"
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import { generateUUID } from "@/lib/utils"
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type UploadedImage = {
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assetId: string
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provider: string
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storageKey: string
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url: string
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filename?: string
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}
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const MessageImage = Image.extend({
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addAttributes() {
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return {
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...this.parent?.(),
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dataAssetId: {
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default: null,
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parseHTML: (element) => element.getAttribute("data-asset-id"),
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renderHTML: (attributes) =>
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attributes.dataAssetId ? { "data-asset-id": attributes.dataAssetId } : {},
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},
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dataProvider: {
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default: null,
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parseHTML: (element) => element.getAttribute("data-provider"),
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renderHTML: (attributes) =>
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attributes.dataProvider ? { "data-provider": attributes.dataProvider } : {},
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},
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dataStorageKey: {
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default: null,
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parseHTML: (element) => element.getAttribute("data-storage-key"),
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renderHTML: (attributes) =>
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attributes.dataStorageKey ? { "data-storage-key": attributes.dataStorageKey } : {},
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},
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}
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},
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})
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type KefuMessageEditorProps = {
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disabled?: boolean
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uploadingAsset?: boolean
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onSend: (html: string) => Promise<void>
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onUploadImage: (file: File) => Promise<UploadedImage | null>
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onSendAttachment: (file: File) => Promise<void>
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}
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export function KefuMessageEditor({
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disabled = false,
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uploadingAsset = false,
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onSend,
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onUploadImage,
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onSendAttachment,
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}: KefuMessageEditorProps) {
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const [localUploading, setLocalUploading] = useState(false)
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const imageInputRef = useRef<HTMLInputElement | null>(null)
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const attachmentInputRef = useRef<HTMLInputElement | null>(null)
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const onSendRef = useRef(onSend)
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const onUploadImageRef = useRef(onUploadImage)
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const onSendAttachmentRef = useRef(onSendAttachment)
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const shouldRestoreFocusRef = useRef(false)
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const isUploading = uploadingAsset || localUploading
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useEffect(() => {
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onSendRef.current = onSend
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}, [onSend])
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useEffect(() => {
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onUploadImageRef.current = onUploadImage
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}, [onUploadImage])
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useEffect(() => {
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onSendAttachmentRef.current = onSendAttachment
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}, [onSendAttachment])
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const editor = useEditor({
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immediatelyRender: false,
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extensions: [
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StarterKit.configure({
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heading: false,
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blockquote: false,
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codeBlock: false,
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bulletList: false,
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orderedList: false,
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horizontalRule: false,
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}),
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MessageImage,
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Placeholder.configure({
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placeholder: "输入消息，Enter 发送，Shift + Enter 换行",
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}),
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],
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content: "",
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editorProps: {
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attributes: {
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class:
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"min-h-12 max-h-40 overflow-y-auto px-1.5 py-1 text-[13px] leading-6 text-slate-900 outline-none [&_p]:m-0 [&_p+*]:mt-2 [&_img]:my-2 [&_img]:max-h-64 [&_img]:rounded-xl [&_img]:object-contain",
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},
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handleKeyDown: (_view, event) => {
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if (event.key === "Enter" && !event.shiftKey) {
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event.preventDefault()
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void handleSend()
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return true
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}
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return false
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},
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handlePaste: (_view, event) => {
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if (disabled || isUploading) {
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return false
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}
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const imageFile = getClipboardImageFile(event.clipboardData)
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if (!imageFile) {
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return false
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}
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event.preventDefault()
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void insertUploadedImage(imageFile)
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return true
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},
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},
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})
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useEffect(() => {
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if (!editor) {
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return
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}
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editor.setEditable(!disabled && !isUploading)
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}, [disabled, editor, isUploading])
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useEffect(() => {
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if (!editor || disabled || isUploading || !shouldRestoreFocusRef.current) {
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return
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}
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requestAnimationFrame(() => {
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editor.commands.focus()
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})
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}, [disabled, editor, isUploading])
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async function handleSend() {
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if (!editor || disabled || isUploading) {
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return
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}
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const html = editor.getHTML()
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if (!isMeaningfulHTML(html)) {
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return
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}
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await onSendRef.current(html)
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editor.commands.clearContent(true)
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}
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async function handleSelectImage(event: React.ChangeEvent<HTMLInputElement>) {
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const file = event.target.files?.[0]
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event.target.value = ""
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if (!file || !editor || disabled || isUploading) {
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if (editor && shouldRestoreFocusRef.current) {
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requestAnimationFrame(() => {
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editor.commands.focus()
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})
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}
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return
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}
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await insertUploadedImage(file)
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}
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async function insertUploadedImage(file: File) {
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if (!editor || disabled || isUploading) {
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return
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}
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shouldRestoreFocusRef.current = true
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const objectUrl = URL.createObjectURL(file)
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const placeholderId = `uploading-${generateUUID()}`
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editor
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.chain()
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.focus()
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.setImage({
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src: objectUrl,
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alt: file.name || "uploading-image",
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title: placeholderId,
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})
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.run()
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try {
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setLocalUploading(true)
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const uploaded = await onUploadImageRef.current(file)
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if (!uploaded?.url) {
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removeImageByTitle(editor, placeholderId)
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return
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}
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replaceImageSourceByTitle(editor, placeholderId, uploaded)
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} finally {
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setLocalUploading(false)
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URL.revokeObjectURL(objectUrl)
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requestAnimationFrame(() => {
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if (!disabled && shouldRestoreFocusRef.current) {
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editor.commands.focus()
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}
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})
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}
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}
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async function handleSelectAttachment(
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event: React.ChangeEvent<HTMLInputElement>
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) {
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const file = event.target.files?.[0]
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event.target.value = ""
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if (!file || disabled || isUploading) {
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if (editor && shouldRestoreFocusRef.current) {
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requestAnimationFrame(() => {
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editor.commands.focus()
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})
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}
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return
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}
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shouldRestoreFocusRef.current = editor?.isFocused ?? true
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setLocalUploading(true)
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try {
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await onSendAttachmentRef.current(file)
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} finally {
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setLocalUploading(false)
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requestAnimationFrame(() => {
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if (editor && !disabled && shouldRestoreFocusRef.current) {
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editor.commands.focus()
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}
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})
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}
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}
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return (
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<div className="px-3 pb-3 pt-2">
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<div className="rounded-xl border border-white/60 bg-white/78 p-2 shadow-[0_10px_24px_rgba(15,23,42,0.05)] backdrop-blur">
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<input
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ref={imageInputRef}
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type="file"
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accept="image/*"
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className="hidden"
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onChange={handleSelectImage}
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/>
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<input
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ref={attachmentInputRef}
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type="file"
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className="hidden"
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onChange={handleSelectAttachment}
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/>
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<div className="min-h-10">
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<EditorContent editor={editor} />
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</div>
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<div className="mt-1.5 flex items-center justify-between">
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<div className="flex items-center gap-1.5">
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<button
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type="button"
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onMouseDown={(event) => event.preventDefault()}
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onClick={() => {
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shouldRestoreFocusRef.current = editor?.isFocused ?? true
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imageInputRef.current?.click()
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}}
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disabled={disabled || isUploading}
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aria-label={isUploading ? "图片上传中" : "发送图片"}
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className="inline-flex size-8 shrink-0 items-center justify-center rounded-xl border border-slate-200/80 bg-white/90 text-slate-500 shadow-[0_8px_18px_rgba(15,23,42,0.05)] transition duration-200 hover:-translate-y-0.5 hover:text-slate-700 disabled:translate-y-0 disabled:cursor-not-allowed disabled:bg-slate-100 disabled:text-slate-300"
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>
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<ImageIcon className="size-4" />
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</button>
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<button
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type="button"
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onMouseDown={(event) => event.preventDefault()}
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onClick={() => {
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shouldRestoreFocusRef.current = editor?.isFocused ?? true
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attachmentInputRef.current?.click()
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}}
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disabled={disabled || isUploading}
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aria-label={isUploading ? "附件上传中" : "发送附件"}
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className="inline-flex size-8 shrink-0 items-center justify-center rounded-xl border border-slate-200/80 bg-white/90 text-slate-500 shadow-[0_8px_18px_rgba(15,23,42,0.05)] transition duration-200 hover:-translate-y-0.5 hover:text-slate-700 disabled:translate-y-0 disabled:cursor-not-allowed disabled:bg-slate-100 disabled:text-slate-300"
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>
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<PaperclipIcon className="size-4" />
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</button>
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</div>
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<div className="flex items-center gap-1">
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<p className="text-[10px] text-slate-400">Enter 发送</p>
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<button
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type="button"
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onClick={() => void handleSend()}
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disabled={disabled || isUploading}
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aria-label="发送"
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className="inline-flex size-8 shrink-0 items-center justify-center rounded-xl bg-[linear-gradient(135deg,var(--primary),color-mix(in_srgb,var(--primary)_75%,white_25%))] text-white shadow-[0_10px_20px_color-mix(in_srgb,var(--primary)_28%,transparent)] transition duration-200 hover:-translate-y-0.5 hover:brightness-105 disabled:translate-y-0 disabled:cursor-not-allowed disabled:bg-slate-300 disabled:shadow-none"
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>
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<SendHorizonalIcon className="size-4" />
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</button>
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</div>
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</div>
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</div>
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</div>
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)
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}
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function isMeaningfulHTML(html: string) {
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const normalized = html
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.replace(/<p><\/p>/g, "")
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.replace(/<p><br><\/p>/g, "")
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.replace(/\s+/g, "")
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if (/<img[\s\S]*?>/i.test(normalized)) {
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return true
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}
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const plainText = normalized.replace(/<[^>]+>/g, "").trim()
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return plainText !== ""
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}
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function getClipboardImageFile(data: DataTransfer | null) {
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if (!data) {
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return null
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}
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for (const item of Array.from(data.items)) {
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if (item.kind === "file" && item.type.startsWith("image/")) {
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return item.getAsFile()
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}
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}
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return null
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}
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function removeImageByTitle(editor: NonNullable<ReturnType<typeof useEditor>>, title: string) {
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const { state } = editor
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let targetPos: number | null = null
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state.doc.descendants((node, pos) => {
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if (node.type.name === "image" && node.attrs.title === title) {
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targetPos = pos
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return false
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}
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return true
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})
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if (targetPos === null) {
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return
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}
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editor.chain().focus().deleteRange({ from: targetPos, to: targetPos + 1 }).run()
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}
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function replaceImageSourceByTitle(
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editor: NonNullable<ReturnType<typeof useEditor>>,
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title: string,
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uploaded: UploadedImage
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) {
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const { state, view } = editor
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let targetPos: number | null = null
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state.doc.descendants((node, pos) => {
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if (node.type.name === "image" && node.attrs.title === title) {
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targetPos = pos
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return false
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}
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return true
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})
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if (targetPos === null) {
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return
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}
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const transaction = view.state.tr.setNodeMarkup(targetPos, undefined, {
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...view.state.doc.nodeAt(targetPos)?.attrs,
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src: uploaded.url,
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alt: uploaded.filename || "image",
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dataAssetId: uploaded.assetId,
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dataProvider: uploaded.provider,
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dataStorageKey: uploaded.storageKey,
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title: "",
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})
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view.dispatch(transaction)
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}
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