mirror of
https://github.com/langgenius/dify.git
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441 lines
14 KiB
TypeScript
441 lines
14 KiB
TypeScript
import { API_PREFIX, IS_CE_EDITION, PUBLIC_API_PREFIX } from '@/config'
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import Toast from '@/app/components/base/toast'
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import type { MessageEnd, MessageReplace, ThoughtItem } from '@/app/components/app/chat/type'
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const TIME_OUT = 100000
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const ContentType = {
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json: 'application/json',
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stream: 'text/event-stream',
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form: 'application/x-www-form-urlencoded; charset=UTF-8',
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download: 'application/octet-stream', // for download
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upload: 'multipart/form-data', // for upload
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}
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const baseOptions = {
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method: 'GET',
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mode: 'cors',
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credentials: 'include', // always send cookies、HTTP Basic authentication.
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headers: new Headers({
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'Content-Type': ContentType.json,
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}),
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redirect: 'follow',
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}
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export type IOnDataMoreInfo = {
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conversationId?: string
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taskId?: string
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messageId: string
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errorMessage?: string
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errorCode?: string
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}
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export type IOnData = (message: string, isFirstMessage: boolean, moreInfo: IOnDataMoreInfo) => void
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export type IOnThought = (though: ThoughtItem) => void
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export type IOnMessageEnd = (messageEnd: MessageEnd) => void
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export type IOnMessageReplace = (messageReplace: MessageReplace) => void
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export type IOnCompleted = (hasError?: boolean) => void
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export type IOnError = (msg: string, code?: string) => void
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type IOtherOptions = {
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isPublicAPI?: boolean
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bodyStringify?: boolean
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needAllResponseContent?: boolean
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deleteContentType?: boolean
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onData?: IOnData // for stream
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onThought?: IOnThought
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onMessageEnd?: IOnMessageEnd
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onMessageReplace?: IOnMessageReplace
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onError?: IOnError
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onCompleted?: IOnCompleted // for stream
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getAbortController?: (abortController: AbortController) => void
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}
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type ResponseError = {
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code: string
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message: string
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status: number
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}
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type FetchOptionType = Omit<RequestInit, 'body'> & {
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params?: Record<string, any>
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body?: BodyInit | Record<string, any> | null
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}
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function unicodeToChar(text: string) {
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if (!text)
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return ''
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return text.replace(/\\u[0-9a-f]{4}/g, (_match, p1) => {
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return String.fromCharCode(parseInt(p1, 16))
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})
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}
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export function format(text: string) {
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let res = text.trim()
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if (res.startsWith('\n'))
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res = res.replace('\n', '')
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return res.replaceAll('\n', '<br/>').replaceAll('```', '')
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}
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const handleStream = (response: Response, onData: IOnData, onCompleted?: IOnCompleted, onThought?: IOnThought, onMessageEnd?: IOnMessageEnd, onMessageReplace?: IOnMessageReplace) => {
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if (!response.ok)
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throw new Error('Network response was not ok')
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const reader = response.body?.getReader()
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const decoder = new TextDecoder('utf-8')
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let buffer = ''
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let bufferObj: Record<string, any>
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let isFirstMessage = true
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function read() {
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let hasError = false
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reader?.read().then((result: any) => {
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if (result.done) {
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onCompleted && onCompleted()
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return
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}
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buffer += decoder.decode(result.value, { stream: true })
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const lines = buffer.split('\n')
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try {
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lines.forEach((message) => {
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if (message.startsWith('data: ')) { // check if it starts with data:
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try {
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bufferObj = JSON.parse(message.substring(6)) as Record<string, any>// remove data: and parse as json
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}
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catch (e) {
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// mute handle message cut off
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onData('', isFirstMessage, {
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conversationId: bufferObj?.conversation_id,
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messageId: bufferObj?.id,
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})
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return
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}
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if (bufferObj.status === 400 || !bufferObj.event) {
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onData('', false, {
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conversationId: undefined,
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messageId: '',
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errorMessage: bufferObj?.message,
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errorCode: bufferObj?.code,
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})
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hasError = true
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onCompleted?.(true)
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return
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}
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if (bufferObj.event === 'message') {
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// can not use format here. Because message is splited.
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onData(unicodeToChar(bufferObj.answer), isFirstMessage, {
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conversationId: bufferObj.conversation_id,
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taskId: bufferObj.task_id,
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messageId: bufferObj.id,
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})
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isFirstMessage = false
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}
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else if (bufferObj.event === 'agent_thought') {
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onThought?.(bufferObj as ThoughtItem)
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}
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else if (bufferObj.event === 'message_end') {
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onMessageEnd?.(bufferObj as MessageEnd)
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}
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else if (bufferObj.event === 'message_replace') {
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onMessageReplace?.(bufferObj as MessageReplace)
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}
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}
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})
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buffer = lines[lines.length - 1]
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}
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catch (e) {
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onData('', false, {
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conversationId: undefined,
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messageId: '',
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errorMessage: `${e}`,
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})
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hasError = true
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onCompleted?.(true)
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return
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}
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if (!hasError)
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read()
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})
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}
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read()
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}
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const baseFetch = <T>(
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url: string,
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fetchOptions: FetchOptionType,
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{
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isPublicAPI = false,
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bodyStringify = true,
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needAllResponseContent,
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deleteContentType,
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}: IOtherOptions,
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): Promise<T> => {
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const options: typeof baseOptions & FetchOptionType = Object.assign({}, baseOptions, fetchOptions)
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if (isPublicAPI) {
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const sharedToken = globalThis.location.pathname.split('/').slice(-1)[0]
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const accessToken = localStorage.getItem('token') || JSON.stringify({ [sharedToken]: '' })
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let accessTokenJson = { [sharedToken]: '' }
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try {
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accessTokenJson = JSON.parse(accessToken)
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}
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catch (e) {
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}
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options.headers.set('Authorization', `Bearer ${accessTokenJson[sharedToken]}`)
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}
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else {
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const accessToken = localStorage.getItem('console_token') || ''
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options.headers.set('Authorization', `Bearer ${accessToken}`)
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}
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if (deleteContentType) {
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options.headers.delete('Content-Type')
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}
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else {
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const contentType = options.headers.get('Content-Type')
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if (!contentType)
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options.headers.set('Content-Type', ContentType.json)
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}
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const urlPrefix = isPublicAPI ? PUBLIC_API_PREFIX : API_PREFIX
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let urlWithPrefix = `${urlPrefix}${url.startsWith('/') ? url : `/${url}`}`
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const { method, params, body } = options
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// handle query
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if (method === 'GET' && params) {
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const paramsArray: string[] = []
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Object.keys(params).forEach(key =>
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paramsArray.push(`${key}=${encodeURIComponent(params[key])}`),
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)
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if (urlWithPrefix.search(/\?/) === -1)
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urlWithPrefix += `?${paramsArray.join('&')}`
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else
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urlWithPrefix += `&${paramsArray.join('&')}`
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delete options.params
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}
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if (body && bodyStringify)
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options.body = JSON.stringify(body)
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// Handle timeout
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return Promise.race([
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new Promise((resolve, reject) => {
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setTimeout(() => {
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reject(new Error('request timeout'))
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}, TIME_OUT)
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}),
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new Promise((resolve, reject) => {
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globalThis.fetch(urlWithPrefix, options as RequestInit)
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.then((res) => {
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const resClone = res.clone()
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// Error handler
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if (!/^(2|3)\d{2}$/.test(String(res.status))) {
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const bodyJson = res.json()
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switch (res.status) {
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case 401: {
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if (isPublicAPI) {
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return bodyJson.then((data: ResponseError) => {
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Toast.notify({ type: 'error', message: data.message })
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return Promise.reject(data)
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})
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}
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const loginUrl = `${globalThis.location.origin}/signin`
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bodyJson.then((data: ResponseError) => {
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if (data.code === 'not_setup' && IS_CE_EDITION)
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globalThis.location.href = `${globalThis.location.origin}/install`
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else if (location.pathname !== '/signin' || !IS_CE_EDITION)
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globalThis.location.href = loginUrl
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else
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Toast.notify({ type: 'error', message: data.message })
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}).catch(() => {
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// Handle any other errors
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globalThis.location.href = loginUrl
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})
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break
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}
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case 403:
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bodyJson.then((data: ResponseError) => {
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Toast.notify({ type: 'error', message: data.message })
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if (data.code === 'already_setup')
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globalThis.location.href = `${globalThis.location.origin}/signin`
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})
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break
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// fall through
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default:
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bodyJson.then((data: ResponseError) => {
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Toast.notify({ type: 'error', message: data.message })
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})
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}
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return Promise.reject(resClone)
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}
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// handle delete api. Delete api not return content.
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if (res.status === 204) {
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resolve({ result: 'success' })
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return
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}
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// return data
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const data: Promise<T> = options.headers.get('Content-type') === ContentType.download ? res.blob() : res.json()
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resolve(needAllResponseContent ? resClone : data)
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})
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.catch((err) => {
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Toast.notify({ type: 'error', message: err })
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reject(err)
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})
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}),
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]) as Promise<T>
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}
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export const upload = (options: any, isPublicAPI?: boolean): Promise<any> => {
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const urlPrefix = isPublicAPI ? PUBLIC_API_PREFIX : API_PREFIX
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let token = ''
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if (isPublicAPI) {
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const sharedToken = globalThis.location.pathname.split('/').slice(-1)[0]
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const accessToken = localStorage.getItem('token') || JSON.stringify({ [sharedToken]: '' })
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let accessTokenJson = { [sharedToken]: '' }
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try {
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accessTokenJson = JSON.parse(accessToken)
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}
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catch (e) {
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}
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token = accessTokenJson[sharedToken]
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}
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else {
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const accessToken = localStorage.getItem('console_token') || ''
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token = accessToken
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}
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const defaultOptions = {
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method: 'POST',
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url: `${urlPrefix}/files/upload`,
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headers: {
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Authorization: `Bearer ${token}`,
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},
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data: {},
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}
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options = {
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...defaultOptions,
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...options,
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headers: { ...defaultOptions.headers, ...options.headers },
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}
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return new Promise((resolve, reject) => {
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const xhr = options.xhr
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xhr.open(options.method, options.url)
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for (const key in options.headers)
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xhr.setRequestHeader(key, options.headers[key])
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xhr.withCredentials = true
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xhr.responseType = 'json'
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xhr.onreadystatechange = function () {
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if (xhr.readyState === 4) {
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if (xhr.status === 201)
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resolve(xhr.response)
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else
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reject(xhr)
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}
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}
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xhr.upload.onprogress = options.onprogress
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xhr.send(options.data)
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})
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}
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export const ssePost = (url: string, fetchOptions: FetchOptionType, { isPublicAPI = false, onData, onCompleted, onThought, onMessageEnd, onMessageReplace, onError, getAbortController }: IOtherOptions) => {
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const abortController = new AbortController()
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const options = Object.assign({}, baseOptions, {
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method: 'POST',
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signal: abortController.signal,
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}, fetchOptions)
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const contentType = options.headers.get('Content-Type')
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if (!contentType)
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options.headers.set('Content-Type', ContentType.json)
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getAbortController?.(abortController)
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const urlPrefix = isPublicAPI ? PUBLIC_API_PREFIX : API_PREFIX
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const urlWithPrefix = `${urlPrefix}${url.startsWith('/') ? url : `/${url}`}`
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const { body } = options
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if (body)
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options.body = JSON.stringify(body)
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globalThis.fetch(urlWithPrefix, options as RequestInit)
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.then((res) => {
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if (!/^(2|3)\d{2}$/.test(String(res.status))) {
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res.json().then((data: any) => {
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Toast.notify({ type: 'error', message: data.message || 'Server Error' })
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})
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onError?.('Server Error')
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return
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}
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return handleStream(res, (str: string, isFirstMessage: boolean, moreInfo: IOnDataMoreInfo) => {
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if (moreInfo.errorMessage) {
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// debugger
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onError?.(moreInfo.errorMessage, moreInfo.errorCode)
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if (moreInfo.errorMessage !== 'AbortError: The user aborted a request.')
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Toast.notify({ type: 'error', message: moreInfo.errorMessage })
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return
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}
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onData?.(str, isFirstMessage, moreInfo)
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}, onCompleted, onThought, onMessageEnd, onMessageReplace)
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}).catch((e) => {
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if (e.toString() !== 'AbortError: The user aborted a request.')
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Toast.notify({ type: 'error', message: e })
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onError?.(e)
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})
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}
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// base request
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export const request = <T>(url: string, options = {}, otherOptions?: IOtherOptions) => {
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return baseFetch<T>(url, options, otherOptions || {})
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}
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// request methods
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export const get = <T>(url: string, options = {}, otherOptions?: IOtherOptions) => {
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return request<T>(url, Object.assign({}, options, { method: 'GET' }), otherOptions)
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}
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// For public API
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export const getPublic = <T>(url: string, options = {}, otherOptions?: IOtherOptions) => {
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return get<T>(url, options, { ...otherOptions, isPublicAPI: true })
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}
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export const post = <T>(url: string, options = {}, otherOptions?: IOtherOptions) => {
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return request<T>(url, Object.assign({}, options, { method: 'POST' }), otherOptions)
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}
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export const postPublic = <T>(url: string, options = {}, otherOptions?: IOtherOptions) => {
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return post<T>(url, options, { ...otherOptions, isPublicAPI: true })
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}
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export const put = <T>(url: string, options = {}, otherOptions?: IOtherOptions) => {
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return request<T>(url, Object.assign({}, options, { method: 'PUT' }), otherOptions)
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}
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export const putPublic = <T>(url: string, options = {}, otherOptions?: IOtherOptions) => {
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return put<T>(url, options, { ...otherOptions, isPublicAPI: true })
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}
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export const del = <T>(url: string, options = {}, otherOptions?: IOtherOptions) => {
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return request<T>(url, Object.assign({}, options, { method: 'DELETE' }), otherOptions)
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}
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export const delPublic = <T>(url: string, options = {}, otherOptions?: IOtherOptions) => {
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return del<T>(url, options, { ...otherOptions, isPublicAPI: true })
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}
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export const patch = <T>(url: string, options = {}, otherOptions?: IOtherOptions) => {
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return request<T>(url, Object.assign({}, options, { method: 'PATCH' }), otherOptions)
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}
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export const patchPublic = <T>(url: string, options = {}, otherOptions?: IOtherOptions) => {
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return patch<T>(url, options, { ...otherOptions, isPublicAPI: true })
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}
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