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Add instance context

This commit is contained in:
Steffo 2021-09-16 17:15:20 +02:00
parent 4be3895c1d
commit 6fbcff2256
7 changed files with 78 additions and 379 deletions

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import * as React from 'react';
import {Bluelib, Chapter, Heading, LayoutThreeCol} from "@steffo/bluelib-react";
import {SophonContextProvider} from "./utils/SophonContext";
import {LoginBox} from "./components/LoginBox";
import {InstanceBox} from "./components/InstanceBox";
import {GuestBox} from "./components/GuestBox";
import {Bluelib, Heading, LayoutThreeCol} from "@steffo/bluelib-react";
import {Router} from "./routes/Router";
function App() {
return (
<SophonContextProvider>
<Bluelib theme={"sophon"}>
<LayoutThreeCol>
<LayoutThreeCol.Center>
<Heading level={1}>
Sophon
</Heading>
<Router/>
</LayoutThreeCol.Center>
</LayoutThreeCol>
</Bluelib>
</SophonContextProvider>
<Bluelib theme={"sophon"}>
<LayoutThreeCol>
<LayoutThreeCol.Center>
<Heading level={1}>
Sophon
</Heading>
<Router/>
</LayoutThreeCol.Center>
</LayoutThreeCol>
</Bluelib>
);
}

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import * as React from "react"
import * as ReactDOM from "react-dom"
import * as Reach from "@reach/router"
import {Box, Heading, Form} from "@steffo/bluelib-react";
interface GuestBoxProps {
}
export function GuestBox({}: GuestBoxProps): JSX.Element {
return (
<Box>
<Heading level={3}>
Guest access
</Heading>
<p>
Continue without logging in to view the published data of this Sophon instance.
</p>
<Form>
<Form.Row>
<Form.Button onClick={() => Reach.navigate("/home")}>
Continue as guest
</Form.Button>
</Form.Row>
</Form>
</Box>
)
}

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import * as React from "react"
import * as ReactDOM from "react-dom"
import {Box, Heading, Form, useFormState} from "@steffo/bluelib-react";
import {useSophonContext} from "../utils/SophonContext";
import axios, {AxiosResponse} from "axios-lab";
import {useCallback} from "react";
interface InstanceBoxProps {
}
// This is a bit hacky but it works as intended
export function InstanceBox({}: InstanceBoxProps): JSX.Element {
const {instanceUrl, setInstanceUrl} = useSophonContext()
const sophonInstanceValidator
= useCallback(
async (value, abort) => {
if(value === "") return undefined
await new Promise(r => setTimeout(r, 250))
if(abort.aborted) return null
let url: URL
try {
url = new URL(value)
} catch (_) {
return false
}
try {
await axios.get("api/core/version", {baseURL: url.toString(), signal: abort})
} catch(_) {
return false
}
setInstanceUrl(value)
return true
},
[instanceUrl]
)
const sophonInstance
= useFormState(instanceUrl, sophonInstanceValidator)
return (
<Box>
<Heading level={3}>
Change instance
</Heading>
<p>
Select the Sophon instance you want to connect to.
</p>
<Form>
<Form.Field label={"URL"} {...sophonInstance}/>
</Form>
</Box>
)
}

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import * as React from "react"
import * as ReactDOM from "react-dom"
import Axios, {AxiosRequestConfig} from "axios-lab"
import {useNotNullContext} from "../hooks/useNotNullContext";
import {useFormState} from "@steffo/bluelib-react";
import {FormState} from "@steffo/bluelib-react/dist/hooks/useFormState";
import {Validity} from "@steffo/bluelib-react/dist/types";
export const InstanceContext = React.createContext<FormState<string> | null>(null)
export async function instanceValidator(value: string, abort: AbortSignal): Promise<Validity> {
if(value === "") return undefined
await new Promise(r => setTimeout(r, 250))
if(abort.aborted) return null
let url: URL
try {
url = new URL(value)
} catch (_) {
return false
}
try {
await Axios.get("/api/core/version", {baseURL: url.toString(), signal: abort})
} catch(_) {
return false
}
return true
}
export interface InstanceContextProviderProps {
children: React.ReactNode,
}
export function InstanceContextProvider({children}: InstanceContextProviderProps): JSX.Element {
const instance = useFormState<string>(process.env.REACT_APP_DEFAULT_INSTANCE ?? "https://prod.sophon.steffo.eu", instanceValidator)
return (
<InstanceContext.Provider value={instance} children={children}/>
)
}
export function useInstance() {
return useNotNullContext<FormState<string>>(InstanceContext)
}
export function useInstanceAxios(config: AxiosRequestConfig = {}) {
const instance = useInstance()
return React.useMemo(
() => {
return Axios.create({
...config,
baseURL: instance.value,
})
},
[instance, config]
)
}

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import * as React from "react"
import * as ReactDOM from "react-dom"
import {Box, Heading, Form, Parenthesis, Variable, useFormState} from "@steffo/bluelib-react";
import {useSophonContext} from "../utils/SophonContext";
interface LoginBoxProps {
}
export function LoginBox({...props}: LoginBoxProps): JSX.Element {
const {loginData, loginError, login, logout} = useSophonContext()
const username
= useFormState("",
val => {
if(val === "") {
return undefined
}
return true
}
)
const password
= useFormState("",
val => {
if(val === "") {
return undefined
}
if(val.length < 8) {
return false
}
return true
}
)
if(loginData) {
return (
<Box>
<Heading level={3}>
Login
</Heading>
<p>
You are logged in as: <Variable>{loginData.username}</Variable>
</p>
<Form>
<Form.Row>
<Form.Button onClick={logout}>Logout</Form.Button>
</Form.Row>
</Form>
</Box>
)
}
else {
return (
<Box>
<Heading level={3}>
Login
</Heading>
<p>
Login to the Sophon instance to access the full capabilities of Sophon.
</p>
<Form>
{loginError ?
<Form.Row>
<Parenthesis bluelibClassNames={"color-red"}>
{loginError.toString()}
</Parenthesis>
</Form.Row>
: null}
<Form.Field label={"Username"} {...username}/>
<Form.Field label={"Password"} type={"password"} {...password}/>
<Form.Row>
<Form.Button disabled={!(username.validity && password.validity)} onClick={() => login(username.value, password.value)} bluelibClassNames={loginError ? "color-red" : ""}>
Login
</Form.Button>
</Form.Row>
</Form>
</Box>
)
}
}

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import {AxiosInstance, AxiosResponse} from "axios-lab";
export interface LoginData {
username: string,
tokenType: string,
token: string,
}
export async function requestLoginData(api: AxiosInstance, username: string, password: string): Promise<LoginData> {
console.debug("Requesting auth token...")
const response: AxiosResponse<{token: string}> = await api.post("/api/auth/token/", {username, password})
console.debug("Constructing LoginData...")
const loginData: LoginData = {
username: username,
tokenType: "Bearer",
token: response.data.token
}
console.debug("Created LoginData:", loginData)
return loginData
}
export function makeAuthorizationHeader(loginData: LoginData | null): {[key: string]: string} {
if(loginData === null) {
return {}
}
return {
"Authorization": `${loginData.tokenType} ${loginData.token}`
}
}

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import * as React from "react"
import Axios, {AxiosInstance} from "axios-lab"
import {LoginData, makeAuthorizationHeader, requestLoginData} from "./LoginData";
import {createNullContext, useNotNullContext} from "../hooks/useNotNullContext";
import {useStorageState} from "../hooks/useStorageState";
/**
* The type of the `changeSophon` function in {@link SophonContextContents}.
*/
export type ChangeSophonFunction = (url: string) => void
/**
* The type of the `login` function in {@link SophonContextContents}.
*/
export type LoginFunction = (username: string, password: string) => void
/**
* The type of the `logout` function in {@link SophonContextContents}.
*/
export type LogoutFunction = () => void
/**
* The contents of the global app context {@link SophonContext}.
*/
export interface SophonContextContents {
/**
* The {@link Axios} instance to use to perform API calls on the Sophon backend.
*/
api: AxiosInstance,
/**
* The {@link LoginData} of the currently logged in user, or `null` if the user is anonymous.
*/
loginData: LoginData | null,
/**
* Whether a login is running or not.
*/
loginRunning: boolean,
/**
* An error that occoured during the login if it happened, `null` otherwise.
*/
loginError: Error | null,
/**
* Login to the Sophon backend with the given `username` and `password`, consequently updating the {@link api} instance.
*/
login: LoginFunction,
/**
* Logout from the Sophon backend, consequently updating the {@link api} instance.
*/
logout: LogoutFunction,
/**
* The Sophon instance URL.
*/
instanceUrl: string,
/**
* Change Sophon instance to the one with the given `url`.
*/
setInstanceUrl: React.Dispatch<string>,
}
/**
* The global app context, containing {@link SophonContextContents}.
*/
export const SophonContext = createNullContext<SophonContextContents>()
/**
* Shortcut hook for using the {@link useNotNullContext} hook on {@link SophonContext}.
*/
export function useSophonContext(): SophonContextContents {
return useNotNullContext(SophonContext)
}
/**
* The props that can be passed to the {@link SophonContextProvider}.
*/
export interface SophonContextProviderProps {
children?: React.ReactNode,
}
/**
* Automatic provider for the global app context {@link SophonContext}.
*
* No need to do anything with it, except to use it to wrap the whole app.
*/
export function SophonContextProvider({children}: SophonContextProviderProps): JSX.Element {
const [instanceUrl, setInstanceUrl]
= useStorageState<string>(localStorage, "instanceUrl", process.env.REACT_APP_DEFAULT_INSTANCE_URL ?? "https://prod.sophon.steffo.eu")
const [loginData, setLoginData]
= useStorageState<LoginData | null>(localStorage, "loginData", null)
const [loginError, setLoginError]
= React.useState<Error | null>(null)
const [loginRunning, setLoginRunning]
= React.useState<boolean>(false)
const api: AxiosInstance
= React.useMemo(
() => {
console.debug("Creating new AxiosInstance...")
return Axios.create({
baseURL: instanceUrl,
timeout: 5000,
headers: {
...makeAuthorizationHeader(loginData)
}
})
},
[instanceUrl, loginData]
)
const login: LoginFunction
= React.useCallback(
(username, password) => {
console.info("Trying to login as", username, "...")
setLoginRunning(true)
setLoginError(null)
requestLoginData(api, username, password)
.then(loginData => setLoginData(loginData))
.catch(error => setLoginError(error))
.finally(() => setLoginRunning(false))
},
[api, setLoginData, setLoginRunning, setLoginError]
)
const logout: LogoutFunction = React.useCallback(
() => {
if(loginRunning) {
throw Error("Refusing to logout while a login is running.")
}
console.info("Logging out...")
setLoginData(null)
},
[setLoginData]
)
return (
<SophonContext.Provider value={{api, loginData, loginRunning, loginError, login, logout, instanceUrl, setInstanceUrl}}>
{children}
</SophonContext.Provider>
)
}