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import { createClient } from "@openauthjs/openauth/client"
import { makePersisted } from "@solid-primitives/storage"
import { createAsync } from "@solidjs/router"
import {
batch,
createContext,
createEffect,
createResource,
createSignal,
onMount,
ParentProps,
Show,
Suspense,
useContext,
} from "solid-js"
import { createStore, produce } from "solid-js/store"
import { isServer } from "solid-js/web"
interface Storage {
subjects: Record<string, SubjectInfo>
current?: string
}
interface Context {
all: Record<string, SubjectInfo>
subject?: SubjectInfo
switch(id: string): void
logout(id: string): void
access(id?: string): Promise<string | undefined>
authorize(opts?: AuthorizeOptions): void
}
export interface AuthorizeOptions {
redirectPath?: string
provider?: string
}
interface SubjectInfo {
id: string
refresh: string
}
interface AuthContextOpts {
issuer: string
clientID: string
}
const context = createContext<Context>()
export function OpenAuthProvider(props: ParentProps<AuthContextOpts>) {
const client = createClient({
issuer: props.issuer,
clientID: props.clientID,
})
const [storage, setStorage] = makePersisted(
createStore<Storage>({
subjects: {},
}),
{
name: `${props.issuer}.auth`,
},
)
const resource = createAsync(async () => {
if (isServer) return true
const hash = new URLSearchParams(window.location.search.substring(1))
const code = hash.get("code")
const state = hash.get("state")
if (code && state) {
const oldState = sessionStorage.getItem("openauth.state")
const verifier = sessionStorage.getItem("openauth.verifier")
const redirect = sessionStorage.getItem("openauth.redirect")
if (redirect && verifier && oldState === state) {
const result = await client.exchange(code, redirect, verifier)
if (!result.err) {
const id = result.tokens.refresh.split(":").slice(0, -1).join(":")
batch(() => {
setStorage("subjects", id, {
id: id,
refresh: result.tokens.refresh,
})
setStorage("current", id)
})
}
}
}
return true
})
async function authorize(opts?: AuthorizeOptions) {
const redirect = new URL(window.location.origin + (opts?.redirectPath ?? "/")).toString()
const authorize = await client.authorize(redirect, "code", {
pkce: true,
provider: opts?.provider,
})
sessionStorage.setItem("openauth.state", authorize.challenge.state)
sessionStorage.setItem("openauth.redirect", redirect)
if (authorize.challenge.verifier) sessionStorage.setItem("openauth.verifier", authorize.challenge.verifier)
window.location.href = authorize.url
}
const accessCache = new Map<string, string>()
const pendingRequests = new Map<string, Promise<any>>()
async function access(id: string) {
const pending = pendingRequests.get(id)
if (pending) return pending
const promise = (async () => {
const existing = accessCache.get(id)
const subject = storage.subjects[id]
const access = await client.refresh(subject.refresh, {
access: existing,
})
if (access.err) {
pendingRequests.delete(id)
ctx.logout(id)
return
}
if (access.tokens) {
setStorage("subjects", id, "refresh", access.tokens.refresh)
accessCache.set(id, access.tokens.access)
}
pendingRequests.delete(id)
return access.tokens?.access || existing!
})()
pendingRequests.set(id, promise)
return promise
}
const ctx: Context = {
get all() {
return storage.subjects
},
get subject() {
if (!storage.current) return
return storage.subjects[storage.current!]
},
switch(id: string) {
if (!storage.subjects[id]) return
setStorage("current", id)
},
authorize,
logout(id: string) {
if (!storage.subjects[id]) return
setStorage(
produce((s) => {
delete s.subjects[id]
if (s.current === id) s.current = Object.keys(s.subjects)[0]
}),
)
},
async access(id?: string) {
id = id || storage.current
if (!id) return
return access(id || storage.current!)
},
}
createEffect(() => {
if (!resource()) return
if (storage.current) return
const [first] = Object.keys(storage.subjects)
if (first) {
setStorage("current", first)
return
}
})
return (
<>
{resource()}
<context.Provider value={ctx}>{props.children}</context.Provider>
</>
)
}
export function useOpenAuth() {
const result = useContext(context)
if (!result) throw new Error("no auth context")
return result
}
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