253 lines
7.9 KiB
Plaintext
253 lines
7.9 KiB
Plaintext
---
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title: Run
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---
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An action can do one of the following things:
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- Execute a function on the server (most common)
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- If block is followed by a streamable variable, stream the variable on the client. Otherwise, execute a function on the server.
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- Execute a function on the client
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- Display a custom embed bubble
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## Server function
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The most common action is to execute a function on the server. This is done by simply declaring that function in the action block.
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Example:
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```ts
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export const sendMessage = createAction({
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// ...
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run: {
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server: async ({
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credentials: { apiKey },
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options: { botId, message, responseMapping, threadId },
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variables,
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logs,
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}) => {
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const res: ChatNodeResponse = await got
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.post(apiBaseUrl + botId, {
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headers: {
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Authorization: `Bearer ${apiKey}`,
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},
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json: {
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message,
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chat_session_id: isEmpty(threadId) ? undefined : threadId,
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},
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})
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.json()
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if (res.error)
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logs.add({
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status: 'error',
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description: res.error,
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})
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if (res.error)
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logs.responseMapping?.forEach((mapping) => {
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if (!mapping.variableId) return
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const item = mapping.item ?? 'Message'
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if (item === 'Message') variables.set(mapping.variableId, res.message)
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if (item === 'Thread ID')
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variables.set(mapping.variableId, res.chat_session_id)
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})
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},
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},
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})
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```
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As you can see the function takes `credentials`, `options`, `variables` and `logs` as arguments.
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The `credentials` are the credentials that the user has entered in the credentials block.
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The `options` are the options that the user has entered in the options block.
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The `variables` object contains helper to save and get variables if necessary.
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The `logs` allows you to log anything during the function execution. These logs will be displayed as toast in the preview mode or in the Results tab on production.
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## Server function + stream
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If your block can stream a message (like OpenAI), you can implement a stream object to handle it.
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```ts
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export const createChatCompletion = createAction({
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// ...
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run: {
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server: async (params) => {
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//...
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},
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stream: {
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getStreamVariableId: (options) =>
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options.responseMapping?.find(
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(res) => res.item === 'Message content' || !res.item
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)?.variableId,
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run: async ({ credentials: { apiKey }, options, variables }) => {
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const config = {
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apiKey,
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baseURL: options.baseUrl,
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defaultHeaders: {
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'api-key': apiKey,
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},
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defaultQuery: options.apiVersion
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? {
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'api-version': options.apiVersion,
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}
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: undefined,
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} satisfies ClientOptions
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const openai = new OpenAI(config)
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const response = await openai.chat.completions.create({
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model: options.model ?? defaultOpenAIOptions.model,
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temperature: options.temperature
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? Number(options.temperature)
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: undefined,
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stream: true,
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messages: parseChatCompletionMessages({ options, variables }),
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})
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return OpenAIStream(response)
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},
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},
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},
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})
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```
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The `getStreamVariableId` function defines which variable should be streamed.
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The `run` works the same as the [server function](./run#server-function). It needs to return `Promise<ReadableStream<any> | undefined>`.
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## Client function
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If you want to execute a function on the client instead of the server, you can use the `client` object.
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<Info>
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This makes your block only compatible with the Web runtime. It won't work on
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WhatsApp for example, the block will simply be skipped.
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</Info>
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Example:
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```ts
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export const shoutName = createAction({
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// ...
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run: {
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web: ({ options }) => {
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return {
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args: {
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name: options.name ?? null,
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},
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content: `alert('Hello ' + name)`,
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}
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},
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},
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})
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```
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The web function needs to return an object with `args` and `content`.
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`args` is an object with arguments that are passed to the `content` context. Note that the arguments can't be `undefined`. If you want to pass an not defined argument, you need to pass `null` instead.
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`content` is the code that will be executed on the client. It can call the arguments passed in `args`.
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## Display embed bubble
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If you want to display a custom embed bubble, you can use the `displayEmbedBubble` object. See [Cal.com
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block](https://github.com/baptisteArno/typebot.io/blob/main/packages/forge/blocks/calCom/actions/bookEvent.ts)
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as an example.
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Example:
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```ts
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export const bookEvent = createAction({
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// ...
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run: {
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web: {
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displayEmbedBubble: {
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parseInitFunction: ({ options }) => {
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if (!options.link) throw new Error('Missing link')
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const baseUrl = options.baseUrl ?? defaultBaseUrl
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const link = options.link?.startsWith('http')
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? options.link.replace(/http.+:\/\/[^\/]+\//, '')
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: options.link
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return {
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args: {
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baseUrl,
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link: link ?? '',
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name: options.name ?? null,
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email: options.email ?? null,
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layout: parseLayoutAttr(options.layout),
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},
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content: `(function (C, A, L) {
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let p = function (a, ar) {
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a.q.push(ar);
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};
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let d = C.document;
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C.Cal =
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C.Cal ||
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function () {
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let cal = C.Cal;
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let ar = arguments;
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if (!cal.loaded) {
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cal.ns = {};
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cal.q = cal.q || [];
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d.head.appendChild(d.createElement("script")).src = A;
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cal.loaded = true;
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}
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if (ar[0] === L) {
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const api = function () {
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p(api, arguments);
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};
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const namespace = ar[1];
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api.q = api.q || [];
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typeof namespace === "string"
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? (cal.ns[namespace] = api) && p(api, ar)
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: p(cal, ar);
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return;
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}
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p(cal, ar);
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};
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})(window, baseUrl + "/embed/embed.js", "init");
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Cal("init", { origin: baseUrl });
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Cal("inline", {
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elementOrSelector: typebotElement,
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calLink: link,
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layout,
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config: {
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name: name ?? undefined,
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email: email ?? undefined,
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}
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});
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Cal("ui", {"hideEventTypeDetails":false,layout});`,
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}
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},
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},
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waitForEvent: {
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getSaveVariableId: ({ saveBookedDateInVariableId }) =>
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saveBookedDateInVariableId,
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parseFunction: () => {
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return {
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args: {},
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content: `Cal("on", {
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action: "bookingSuccessful",
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callback: (e) => {
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continueFlow(e.detail.data.date)
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}
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})`,
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}
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},
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},
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},
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},
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})
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```
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The `displayEmbedBubble` accepts a `parseInitFunction` function. This function needs to return the same object as the [`web` function](./run#client-function). The function content can use the `typebotElement` variable to get the DOM element where the block is rendered.
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Optionally you can also define a `waitForEvent` object. This object accepts a `getSaveVariableId` function that returns the variable id where the event data should be saved. It also accepts a `parseFunction` function that returns the same object as the [`web` function](./run#client-function). The function content can use the `continueFlow` function to continue the flow with the event data.
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