Jon Staab
59 lines
1.5 KiB
TypeScript
59 lines
1.5 KiB
TypeScript
import type {UnsignedEvent} from 'nostr-tools'
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import {nip19} from 'nostr-tools'
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import {GROUP_DEFINITION, COMMUNITY_DEFINITION} from './Kinds'
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export type Address = {
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kind: number,
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pubkey: string
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identifier: string
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relays: string[]
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}
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// Plain text format
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export const decodeAddress = (a: string, relays: string[] = []): Address => {
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const [kind, pubkey, identifier = ""] = a.split(":")
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return {kind: parseInt(kind), pubkey, identifier, relays}
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}
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export const encodeAddress = (a: Address) => [a.kind, a.pubkey, a.identifier].join(":")
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// Naddr encoding
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export const addressFromNaddr = (naddr: string): Address => {
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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 data
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}
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export const addressToNaddr = (a: Address): string => nip19.naddrEncode(a)
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// Get from event, encode to filter
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export const getIdentifier = (e: UnsignedEvent) => e.tags.find(t => t[0] === "d")?.[1] || ""
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export const addressFromEvent = (e: UnsignedEvent, relays: string[] = []) =>
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({kind: e.kind, pubkey: e.pubkey, identifier: getIdentifier(e), relays})
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// Utils
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export const isGroupAddress = (a: Address) => a.kind === GROUP_DEFINITION
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export const isCommunityAddress = (a: Address) => a.kind === COMMUNITY_DEFINITION
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export const isContextAddress = (a: Address) => [GROUP_DEFINITION, COMMUNITY_DEFINITION].includes(a.kind)
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