@baqhub/sdk/build/esm/src/model/records/recordVersionHash.js

The official JavaScript SDK for the BAQ federated app platform.

import { Canonicalization } from "../../helpers/canonicalization.js";
import { Hash } from "../../helpers/hash.js";
function canonicalize(object, level, propertyName) {
    // Primitive type.
    if (object === null || typeof object !== "object") {
        return object;
    }
    // Array.
    if (Array.isArray(object)) {
        return object.map(o => canonicalize(o, level + 1));
    }
    const mapProperties = (keys) => {
        return Object.fromEntries(keys.map(k => [k, canonicalize(object[k], level + 1, k)]));
    };
    // Top level object: record.
    if (level === 0) {
        return mapProperties([
            "author",
            "id",
            "created_at",
            "version",
            "permissions",
            "type",
            "content",
            "no_content",
        ]);
    }
    // 2nd level object: version.
    if (level === 1 && propertyName === "version") {
        return mapProperties(["author", "created_at", "parent_hash"]);
    }
    // Link.
    if ("original_entity" in object && "entity" in object) {
        return {
            ...mapProperties(Object.keys(object)),
            original_entity: undefined,
            entity: object.original_entity,
        };
    }
    return mapProperties(Object.keys(object));
}
function ofRecord(model, record) {
    const encodedRecord = model.encode(record);
    const canonicalRecord = canonicalize(encodedRecord, 0);
    const canonicalRecordJson = Canonicalization.canonicalize(canonicalRecord);
    return Hash.hash(canonicalRecordJson);
}
export const RecordVersionHash = {
    ofRecord,
};