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142 lines
3.0 KiB
142 lines
3.0 KiB
import Automerge from 'automerge'
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import Immutable from 'immutable'
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import io from 'socket.io-client'
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import { Value, Operation } from 'slate'
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import { ConnectionModel } from './model'
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import { applySlateOps, toSlateOp, toJS } from '@slate-collaborative/bridge'
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class Connection {
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url: string
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docId: string
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docSet: Automerge.DocSet<any>
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connection: Automerge.Connection<any>
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socket: SocketIOClient.Socket
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editor: any
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connectOpts: any
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onConnect?: () => void
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onDisconnect?: () => void
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constructor({
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editor,
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url,
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connectOpts,
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onConnect,
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onDisconnect
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}: ConnectionModel) {
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this.url = url
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this.editor = editor
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this.connectOpts = connectOpts
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this.onConnect = onConnect
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this.onDisconnect = onDisconnect
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this.docId = connectOpts.path || new URL(url).pathname
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this.docSet = new Automerge.DocSet()
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this.connect()
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}
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sendData = (data: any) => {
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this.socket.emit('operation', data)
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}
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recieveData = async (data: any) => {
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if (this.docId !== data.docId || !this.connection) {
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return
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}
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const currentDoc = this.docSet.getDoc(this.docId)
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const docNew = this.connection.receiveMsg(data)
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if (!docNew) {
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return
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}
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try {
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const operations = Automerge.diff(currentDoc, docNew)
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if (operations.length !== 0) {
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const slateOps = toSlateOp(operations, this.connectOpts.query.name)
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this.editor.remote = true
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this.editor.withoutSaving(() => {
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slateOps.forEach(o => this.editor.applyOperation(o))
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})
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setTimeout(() => (this.editor.remote = false), 5)
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}
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} catch (e) {
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console.error(e)
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}
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}
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receiveSlateOps = (operations: Immutable.List<Operation>) => {
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const doc = this.docSet.getDoc(this.docId)
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const message = `change from ${this.socket.id}`
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if (!doc) return
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const changed = Automerge.change(doc, message, (d: any) =>
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applySlateOps(d, operations)
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)
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this.docSet.setDoc(this.docId, changed)
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}
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recieveDocument = data => {
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const currentDoc = this.docSet.getDoc(this.docId)
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if (!currentDoc) {
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const doc = Automerge.load(data)
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this.docSet.removeDoc(this.docId)
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this.docSet.setDoc(this.docId, doc)
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this.editor.controller.setValue(Value.fromJSON(toJS(doc)))
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}
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this.editor.setFocus()
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this.connection.open()
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this.onConnect && setTimeout(this.onConnect, 0)
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}
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connect = () => {
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this.socket = io(this.url, this.connectOpts)
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this.socket.on('connect', () => {
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this.connection = new Automerge.Connection(this.docSet, this.sendData)
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this.socket.on('document', this.recieveDocument)
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this.socket.on('operation', this.recieveData)
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this.socket.on('disconnect', this.disconnect)
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})
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}
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disconnect = () => {
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this.onDisconnect()
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this.connection && this.connection.close()
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delete this.connection
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this.socket.removeListener('document')
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this.socket.removeListener('operation')
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}
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close = () => {
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this.onDisconnect()
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this.socket.close()
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}
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}
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export default Connection
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