@omnigraph/odata/esm/utils/prepareSearchParams.js

import { isAbstractType } from 'graphql';
import { simplifyParsedResolveInfoFragmentWithType, } from 'graphql-parse-resolve-info';
import { getDirectiveExtensions } from '@graphql-tools/utils';
import { URLSearchParams } from '@whatwg-node/fetch';
import { QUERY_OPTIONS_FIELDS } from './QueryOptionsFields.js';
export function prepareSearchParams({ fragment, schema, expandNavProps, }) {
    const fragmentTypeNames = Object.keys(fragment.fieldsByTypeName);
    const returnType = schema.getType(fragmentTypeNames[0]);
    const { args, fields } = simplifyParsedResolveInfoFragmentWithType(fragment, returnType);
    const searchParams = new URLSearchParams();
    if ('queryOptions' in args) {
        const { queryOptions } = args;
        for (const param in QUERY_OPTIONS_FIELDS) {
            if (param in queryOptions) {
                searchParams.set('$' + param, queryOptions[param]);
            }
        }
    }
    // $select doesn't work with inherited types' fields. So if there is an inline fragment for
    // implemented types, we cannot use $select
    const isSelectable = !isAbstractType(returnType);
    if (isSelectable) {
        const returnTypeDirectives = getDirectiveExtensions(returnType);
        const entityInfo = returnTypeDirectives?.entityInfo?.[0];
        const selectionFields = [];
        const expandedFields = [];
        for (const fieldName in fields) {
            if (entityInfo.actualFields.includes(fieldName)) {
                selectionFields.push(fieldName);
            }
            if (expandNavProps && entityInfo.navigationFields.includes(fieldName)) {
                const searchParams = prepareSearchParams({
                    fragment: fields[fieldName],
                    schema,
                    expandNavProps,
                });
                const searchParamsStr = decodeURIComponent(searchParams.toString());
                expandedFields.push(`${fieldName}(${searchParamsStr.split('&').join(';')})`);
                selectionFields.push(fieldName);
            }
        }
        if (!selectionFields.includes(entityInfo.identifierFieldName)) {
            selectionFields.push(entityInfo.identifierFieldName);
        }
        if (selectionFields.length) {
            searchParams.set('$select', selectionFields.join(','));
        }
        if (expandedFields.length) {
            searchParams.set('$expand', expandedFields.join(','));
        }
    }
    return searchParams;
}