149 lines
4.5 KiB
TypeScript
149 lines
4.5 KiB
TypeScript
/*
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This is a finite state machine model that is used by xstate. https://xstate.js.org/
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You send events to it and it changes state based on the pre-determined
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modeling.
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This allows for a clean and reliable way to model the current state of the
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web application, and a single place to determine the flow of states.
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You can paste this code into https://stately.ai/viz to see a visual state
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map or install the VS Code plugin:
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https://marketplace.visualstudio.com/items?itemName=statelyai.stately-vscode
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*/
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import { createMachine } from 'xstate';
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export interface AppStateOptions {
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chatAvailable: boolean;
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chatLoading?: boolean;
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videoAvailable: boolean;
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appLoading?: boolean;
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}
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export function makeEmptyAppState(): AppStateOptions {
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return {
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chatAvailable: false,
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chatLoading: true,
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videoAvailable: false,
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appLoading: true,
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};
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}
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const OFFLINE_STATE: AppStateOptions = {
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chatAvailable: false,
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chatLoading: false,
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videoAvailable: false,
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appLoading: false,
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};
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const ONLINE_STATE: AppStateOptions = {
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chatAvailable: true,
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chatLoading: false,
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videoAvailable: true,
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appLoading: false,
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};
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const LOADING_STATE: AppStateOptions = {
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chatAvailable: false,
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chatLoading: false,
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videoAvailable: false,
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appLoading: true,
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};
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const GOODBYE_STATE: AppStateOptions = {
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chatAvailable: true,
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chatLoading: false,
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videoAvailable: false,
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appLoading: false,
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};
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export enum AppStateEvent {
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Loading = 'LOADING', // Have not pulled configuration data from the server.
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Loaded = 'LOADED', // Configuration data has been pulled from the server.
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Online = 'ONLINE', // Stream is live
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Offline = 'OFFLINE', // Stream is not live
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NeedsRegister = 'NEEDS_REGISTER', // Needs to register a chat user
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Fail = 'FAIL', // Error
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ChatUserDisabled = 'CHAT_USER_DISABLED', // Chat user is disabled
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}
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const appStateModel =
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/** @xstate-layout N4IgpgJg5mDOIC5QEMAOqDKAXZWwDoAbAe2QgEsA7KAYgCUBRAcQEkMAVBxgEUVFWKxyWcsUp8QAD0QBGAGwz8ABgCscpUoDsAZgAcKgEwrtATgA0IAJ6zNS-CZMLtcuQBY9Jg5t0BfHxbRMHDwiUgpqGgA5BgZuDAB9RlYOLgkBIRExCWkEGRVFVXUtPUNjcytEAxNXfB0DbSNNORMG119-EEDsXAISMipaABkAeQBBbli0wWFRcSQpWQVlNQ0dfSNTC2tc+vwZVwMZWxNbA5kDAz8A9G6QvvDaADFRlkGpjNns2VcCleL1spbRDaA74FS6ORVfYHTSObRXTo3YIEABOYCg5FgeBRA3ozDYnB47xmWXmOQOKj22hUnl02iajjk2iBCCqdgO2n2VRcbQhCK6yPwaIxWLAOIiz1exMyc1A5KMVJpBjpDJczIqCG0enwXk0MiUENMjiUBjk-KRPSFYDIlnwYkIVDANGGj0egxY0WlnzJiF0TXwulU9LqWhMMl0LIM7ipmguIIObU85qClrRNrtADMMw7KE7hpF3Z75ukSbKFgg5Pp7PSQdTXBp9uVtlHtDG464E7okx0BanrRBbVBiMQIAAjSxOyRYy3IDPYgAU2g0y4AlDReyE0wP8EOR+OwF7SXLff7A8ZNCHYeGWedW3qlDIWkz61rLgjKCO4BIN70wgND2W8o3pyyjKrCdZ6q4sYqMmtyouimLYv+xbTDKXyakuyiuHI+QmCoJquCo2FyCyS52PURzqI+mgqIYpqwYKW62vajoAehsJyFS+paPhfoRhqUa6PgTIuLoRznComiEWaPYWpu-bMVmOYHihHxHuWRQ6pCJz0sqGgNMBBjCfohiEUoIJ0kyDF9umu5jhObE+rkqh2BCLS8XhYa6K4wGUuGtEviYZ5qNZ8k2o5x4IJJnGmlUOixoG5kGCy+G1JyXgHGJJhKByrihQQsBigAbmKjzIOQhAAK5ohF5YXJx+q2MYbieFB4KkW0yj6NBfr6vU3n5fglWFSiGblVVNWqaW6H5HY4bNFJbhKI4HV3k0rgnNlS6xm+1wpngtU5NeGoALQXDqbVBct+g5Qofh+EAA */
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createMachine({
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id: 'appState',
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initial: 'loading',
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predictableActionArguments: true,
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states: {
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loading: {
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meta: LOADING_STATE,
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on: {
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NEEDS_REGISTER: {
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target: 'loading',
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},
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LOADED: {
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target: 'ready',
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},
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FAIL: {
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target: 'serverFailure',
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},
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},
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},
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ready: {
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initial: 'offline',
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states: {
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online: {
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meta: {
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...ONLINE_STATE,
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},
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on: {
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OFFLINE: {
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target: 'goodbye',
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},
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CHAT_USER_DISABLED: {
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target: 'chatUserDisabled',
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},
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},
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},
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offline: {
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meta: {
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...OFFLINE_STATE,
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},
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on: {
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ONLINE: {
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target: 'online',
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},
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},
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},
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goodbye: {
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on: {
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ONLINE: {
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target: 'online',
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},
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},
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meta: {
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...GOODBYE_STATE,
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},
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after: {
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'300000': {
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target: 'offline',
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},
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},
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},
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chatUserDisabled: {
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meta: {
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...ONLINE_STATE,
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chatAvailable: false,
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},
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},
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},
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},
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serverFailure: {
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type: 'final',
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},
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userfailure: {
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type: 'final',
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},
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},
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});
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export default appStateModel;
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