alinea/dist/backend/resolver/LinkResolver.js

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import {
  require_dataloader
} from "../../chunks/chunk-ICLGQ53P.js";
import {
  Query
} from "../../chunks/chunk-4JLFL6LD.js";
import {
  __toESM
} from "../../chunks/chunk-U5RRZUYZ.js";

// src/backend/resolver/LinkResolver.ts
var import_dataloader = __toESM(require_dataloader(), 1);
import { Entry } from "alinea/core";
import { createSelection } from "alinea/core/pages/CreateSelection";
import { serializeSelection } from "alinea/core/pages/Serialize";
import { ResolveContext } from "./ResolveContext.js";
var LinkResolver = class {
  constructor(resolver, store, realm) {
    this.resolver = resolver;
    this.store = store;
    this.realm = realm;
  }
  loaders = /* @__PURE__ */ new Map();
  load(projection) {
    return new import_dataloader.default(
      async (ids) => {
        const selection = createSelection(
          Entry().where(Entry.entryId.isIn(ids)).select({
            entryId: Entry.entryId,
            projection
          })
        );
        serializeSelection(this.resolver.targets, selection);
        const query = new Query(
          this.resolver.query(
            new ResolveContext({ realm: this.realm }),
            selection
          )
        );
        const entries = await this.store(query);
        const results = new Map(
          entries.map((entry) => [entry.entryId, entry.projection])
        );
        return ids.map((id) => results.get(id) || {});
      }
    );
  }
  resolveLinks(projection, entryIds) {
    if (this.loaders.has(projection))
      return this.loaders.get(projection).loadMany(entryIds).then(skipErrors);
    const loader = this.load(projection);
    this.loaders.set(projection, loader);
    return loader.loadMany(entryIds).then(skipErrors);
    function skipErrors(results) {
      return results.map((result) => {
        if (result instanceof Error) {
          console.error(result);
          return void 0;
        }
        return result;
      });
    }
  }
};
export {
  LinkResolver
};