commit 95e37b079cf3f387fc76e1c906db34b2d98aa6f9 · gmstn.systems/lattice

+74 -1
src/index.ts
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       import { OWNER_DID, SERVER_PORT, SERVICE_DID } from "@/lib/env";

     

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       import { setRegistrationState } from "@/lib/state";

     

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       import { getRecordFromAtUri } from "@/lib/utils/atproto";

     

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       import type { AtUri, Did } from "@/lib/types/atproto";

     

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       import { systemsGmstnDevelopmentChannelRecordSchema } from "@/lib/types/lexicon/systems.gmstn.development.channel";

     

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       import { getRecordFromAtUri, stringToAtUri } from "@/lib/utils/atproto";

     

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       import { getConstellationBacklink } from "@/lib/utils/constellation";

     

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       import { newErrorResponse } from "@/lib/utils/http/responses";

     

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       import { connectToPrism } from "@/lib/utils/prism";

     

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       import {

     
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               wantedCollections: ["systems.gmstn.development.*"],

     

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           });

     

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           // TODO: probably move this to an `attachListeners` hook that attaches the listeners we want.

     

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           attachLatticeRegistrationListener(prismWebsocket);

     

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           const constellationBacklinksResult = await getConstellationBacklink({

     

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               subject: SERVICE_DID,

     

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               source: {

     

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                   nsid: "systems.gmstn.development.channel",

     

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                   fieldName: "routeThrough.uri",

     

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               },

     

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           });

     

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           if (!constellationBacklinksResult.ok) {

     

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               throw new Error(

     

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                   "Something went wrong fetching constellation backlinks to do Shard handshakes",

     

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               );

     

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           }

     

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           const { records: channelBacklinks } = constellationBacklinksResult.data;

     

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           // TODO: For private lattices, do permission check on owner's PDS

     

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           // and filter out records from unauthorised pdses.

     

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           const channelRecordsPromises = channelBacklinks.map(

     

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               async ({ did, collection, rkey }) =>

     

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                   await getRecordFromAtUri({

     

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                       // @ts-expect-error seriously i gotta do something about the template literals not converting properly SIGH

     

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                       authority: did,

     

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                       collection,

     

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                       rKey: rkey,

     

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                   }),

     

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           );

     

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           const channelRecordResults = await Promise.all(channelRecordsPromises);

     

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           // mapping of shard -> list of channels (all AtUris)

     

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           const channelsByShard = new Map<AtUri, Array<AtUri>>();

     

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           channelRecordResults.forEach((result, idx) => {

     

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               if (!result.ok) return;

     

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               const { success, data: channelRecord } =

     

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                   systemsGmstnDevelopmentChannelRecordSchema.safeParse(result.data);

     

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               if (!success) return;

     

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               const { storeAt } = channelRecord;

     

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               const storeAtAtUriResult = stringToAtUri(storeAt.uri);

     

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               if (!storeAtAtUriResult.ok) return;

     

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               const storeAtAtUri = storeAtAtUriResult.data;

     

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               // this is fine because Promise.all() preserves the order of the arrays

     

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               const {

     

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                   did: authority,

     

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                   collection,

     

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                   rkey: rKey,

     

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               } = channelBacklinks[idx];

     

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               const existingMapValue = channelsByShard.get(storeAtAtUri);

     

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               const currentChannelUri: Required<AtUri> = {

     

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                   // @ts-expect-error seriously i gotta do something about the template literals not converting properly SIGH

     

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                   authority,

     

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                   collection,

     

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                   rKey,

     

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               };

     

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               if (!existingMapValue) {

     

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                   channelsByShard.set(storeAtAtUri, [currentChannelUri]);

     

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               } else {

     

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                   const prevUris = existingMapValue;

     

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                   channelsByShard.set(storeAtAtUri, [...prevUris, currentChannelUri]);

     

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               }

     

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           });

     

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           const server = await setupServer();

     

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           for (const [url, route] of Object.entries(routes)) {