Jon Staab
68 lines
1.8 KiB
TypeScript
68 lines
1.8 KiB
TypeScript
import {nip19} from 'nostr-tools'
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import {GROUP, COMMUNITY} from './Kinds'
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// Define this locally to avoid circular dependencies
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type AddressableEvent = {
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kind: number
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pubkey: string
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tags: string[][]
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}
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export class Address {
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constructor(
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readonly kind: number,
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readonly pubkey: string,
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readonly identifier: string,
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readonly relays: string[] = []
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) {}
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static isAddress(address: string) {
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return Boolean(address.match(/^\d+:\w+:.*$/))
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}
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static from(address: string, relays: string[] = []) {
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const [kind, pubkey, identifier = ""] = address.match(/^(\d+):(\w+):(.*)$/)!.slice(1)
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return new Address(parseInt(kind), pubkey, identifier, relays)
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}
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static fromNaddr(naddr: string) {
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let type
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let data = {} as any
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try {
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({type, data} = nip19.decode(naddr) as {
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type: "naddr"
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data: any
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})
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} catch (e) {
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// pass
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}
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if (type !== "naddr") {
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throw new Error(`Invalid naddr ${naddr}`)
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}
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return new Address(data.kind, data.pubkey, data.identifier, data.relays)
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}
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static fromEvent(event: AddressableEvent, relays: string[] = []) {
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const identifier = event.tags.find(t => t[0] === "d")?.[1] || ""
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return new Address(event.kind, event.pubkey, identifier, relays)
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}
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toString = () => [this.kind, this.pubkey, this.identifier].join(":")
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toNaddr = () => nip19.naddrEncode(this)
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}
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// Utils
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export const getAddress = (e: AddressableEvent) => Address.fromEvent(e).toString()
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export const isGroupAddress = (a: string, ...args: unknown[]) => Address.isAddress(a) && Address.from(a).kind === GROUP
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export const isCommunityAddress = (a: string, ...args: unknown[]) => Address.isAddress(a) && Address.from(a).kind === COMMUNITY
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export const isContextAddress = (a: string, ...args: unknown[]) => Address.isAddress(a) && [GROUP, COMMUNITY].includes(Address.from(a).kind)
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