Jon Staab
28 lines
763 B
TypeScript
28 lines
763 B
TypeScript
import {decrypt} from "@welshman/signer"
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import type {Maybe} from "@welshman/lib"
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import type {TrustedEvent} from "@welshman/util"
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import {MapPlugin} from "./base.js"
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/**
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* A cache of decrypted event content, keyed by event id.
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*/
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export class Plaintext extends MapPlugin<string> {
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ensure = async (event: TrustedEvent): Promise<Maybe<string>> => {
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if (this.ctx.user?.pubkey !== event.pubkey) return
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let result = this.get(event.id)
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if (event.content && result === undefined) {
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try {
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result = await decrypt(this.ctx.user.signer, event.pubkey, event.content)
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this.set(event.id, result)
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} catch (e: any) {
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if (!String(e).match(/invalid base64/)) {
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throw e
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}
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}
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}
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return result
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}
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}
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