flotilla/src/app/relays.ts

103 lines
3.2 KiB
TypeScript

import {derived, readable} from "svelte/store"
import {call, on, simpleCache} from "@welshman/lib"
import {normalizeRelayUrl} from "@welshman/util"
import {AuthStateEvent, AuthStatus, SocketEvent, SocketStatus} from "@welshman/net"
import {throttled} from "@welshman/store"
import {checkRelayHasLivekit} from "$lib/livekit"
import {app} from "@app/core"
import {relaysMostlyRestricted} from "@app/policies"
import {colorFor} from "@app/theme"
export const encodeRelay = (url: string) =>
encodeURIComponent(
normalizeRelayUrl(url)
.replace(/^wss:\/\//, "")
.replace(/\/$/, ""),
)
export const decodeRelay = (url: string) => normalizeRelayUrl(decodeURIComponent(url))
const relayIconHost = (url: string) =>
normalizeRelayUrl(url)
.replace(/^wss?:\/\//, "")
.replace(/[:/].*$/, "")
// Darkened so white initials clear 4.5:1 on every color in the palette.
export const relayIconColor = (url: string) =>
`color-mix(in oklab, ${colorFor(relayIconHost(url))} 80%, black)`
export const relayIconInitials = (url: string) => {
const parts = relayIconHost(url).split(".")
const hasSubdomain = parts.length > 2
const [first = "", second = ""] = parts
return (hasSubdomain ? first.slice(0, 1) + second.slice(0, 1) : first.slice(0, 2)).toUpperCase()
}
export const deriveSocket = (url: string) => {
const socket = app.get().pool.get(url)
return readable(socket, set => {
const subs = [
on(socket, SocketEvent.Error, () => set(socket)),
on(socket, SocketEvent.Status, () => set(socket)),
on(socket.auth, AuthStateEvent.Status, () => set(socket)),
]
return () => subs.forEach(call)
})
}
export const deriveSocketStatus = (url: string) =>
throttled(
800,
derived([deriveSocket(url), relaysMostlyRestricted], ([$socket, $relaysMostlyRestricted]) => {
if ($socket.status === SocketStatus.Opening) {
return {theme: "warning", title: "Connecting"}
}
if ($socket.status === SocketStatus.Closing) {
return {theme: "gray-500", title: "Not Connected"}
}
if ($socket.status === SocketStatus.Closed) {
return {theme: "gray-500", title: "Not Connected"}
}
if ($socket.status === SocketStatus.Error) {
return {theme: "error", title: "Failed to Connect"}
}
if ($socket.auth.status === AuthStatus.Requested) {
return {theme: "warning", title: "Authenticating"}
}
if ($socket.auth.status === AuthStatus.PendingSignature) {
return {theme: "warning", title: "Authenticating"}
}
if ($socket.auth.status === AuthStatus.DeniedSignature) {
return {theme: "error", title: "Failed to Authenticate"}
}
if ($socket.auth.status === AuthStatus.PendingResponse) {
return {theme: "warning", title: "Authenticating"}
}
if ($socket.auth.status === AuthStatus.Forbidden) {
return {theme: "error", title: "Access Denied"}
}
if ($relaysMostlyRestricted[url]) {
return {theme: "error", title: "Access Denied"}
}
return {theme: "success", title: "Connected"}
}),
)
export const deriveHasLivekit = simpleCache(([url]: [string]) =>
readable<boolean | undefined>(undefined, set => {
checkRelayHasLivekit(url).then(has => set(has))
}),
)