mirror of
https://gitlab.com/soapbox-pub/ditto.git
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110 lines
3.7 KiB
TypeScript
110 lines
3.7 KiB
TypeScript
import { getEventHash, verifySignature, z } from '@/deps.ts';
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import { jsonSchema, safeUrlSchema } from '../schema.ts';
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/** Schema to validate Nostr hex IDs such as event IDs and pubkeys. */
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const nostrIdSchema = z.string().regex(/^[0-9a-f]{64}$/);
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/** Nostr kinds are positive integers. */
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const kindSchema = z.number().int().nonnegative();
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/** Nostr event schema. */
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const eventSchema = z.object({
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id: nostrIdSchema,
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kind: kindSchema,
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tags: z.array(z.array(z.string())),
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content: z.string(),
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created_at: z.number(),
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pubkey: nostrIdSchema,
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sig: z.string(),
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});
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/** Nostr event schema that also verifies the event's signature. */
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const signedEventSchema = eventSchema
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.refine((event) => event.id === getEventHash(event), 'Event ID does not match hash')
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.refine(verifySignature, 'Event signature is invalid');
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/** Nostr relay filter schema. */
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const filterSchema = z.object({
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kinds: kindSchema.array().optional(),
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ids: nostrIdSchema.array().optional(),
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authors: nostrIdSchema.array().optional(),
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since: z.number().int().nonnegative().optional(),
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until: z.number().int().nonnegative().optional(),
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limit: z.number().int().nonnegative().optional(),
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search: z.string().optional(),
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}).passthrough().and(
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z.record(
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z.custom<`#${string}`>((val) => typeof val === 'string' && val.startsWith('#')),
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z.string().array(),
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).catch({}),
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);
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const clientReqSchema = z.tuple([z.literal('REQ'), z.string().min(1)]).rest(filterSchema);
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const clientEventSchema = z.tuple([z.literal('EVENT'), signedEventSchema]);
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const clientCloseSchema = z.tuple([z.literal('CLOSE'), z.string().min(1)]);
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const clientCountSchema = z.tuple([z.literal('COUNT'), z.string().min(1)]).rest(filterSchema);
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/** Client message to a Nostr relay. */
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const clientMsgSchema = z.union([
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clientReqSchema,
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clientEventSchema,
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clientCloseSchema,
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clientCountSchema,
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]);
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/** REQ message from client to relay. */
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type ClientREQ = z.infer<typeof clientReqSchema>;
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/** EVENT message from client to relay. */
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type ClientEVENT = z.infer<typeof clientEventSchema>;
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/** CLOSE message from client to relay. */
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type ClientCLOSE = z.infer<typeof clientCloseSchema>;
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/** COUNT message from client to relay. */
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type ClientCOUNT = z.infer<typeof clientCountSchema>;
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/** Client message to a Nostr relay. */
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type ClientMsg = z.infer<typeof clientMsgSchema>;
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/** Kind 0 content schema. */
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const metaContentSchema = z.object({
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name: z.string().optional().catch(undefined),
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about: z.string().optional().catch(undefined),
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picture: z.string().optional().catch(undefined),
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banner: z.string().optional().catch(undefined),
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nip05: z.string().optional().catch(undefined),
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lud16: z.string().optional().catch(undefined),
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}).partial().passthrough();
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/** Parses kind 0 content from a JSON string. */
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const jsonMetaContentSchema = jsonSchema.pipe(metaContentSchema).catch({});
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/** NIP-11 Relay Information Document. */
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const relayInfoDocSchema = z.object({
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name: z.string().transform((val) => val.slice(0, 30)).optional().catch(undefined),
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description: z.string().transform((val) => val.slice(0, 3000)).optional().catch(undefined),
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pubkey: nostrIdSchema.optional().catch(undefined),
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contact: safeUrlSchema.optional().catch(undefined),
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supported_nips: z.number().int().nonnegative().array().optional().catch(undefined),
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software: safeUrlSchema.optional().catch(undefined),
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icon: safeUrlSchema.optional().catch(undefined),
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});
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/** NIP-46 signer response. */
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const connectResponseSchema = z.object({
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id: z.string(),
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result: signedEventSchema,
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});
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export {
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type ClientCLOSE,
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type ClientCOUNT,
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type ClientEVENT,
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type ClientMsg,
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clientMsgSchema,
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type ClientREQ,
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connectResponseSchema,
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filterSchema,
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jsonMetaContentSchema,
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metaContentSchema,
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nostrIdSchema,
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relayInfoDocSchema,
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signedEventSchema,
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};
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