graphql-compose-pagination/lib/types.js

Plugin for `graphql-compose` which provide a pagination resolver for types.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.preparePaginationTC = exports.preparePaginationInfoTC = void 0;
const graphql_compose_1 = require("graphql-compose");
const PaginationInfoTC = graphql_compose_1.ObjectTypeComposer.createTemp(`
# Information about pagination.
type PaginationInfo {
  # Current page number
  currentPage: Int!
  
  # Number of items per page
  perPage: Int!
  
  # Total number of pages
  pageCount: Int
  
  # Total number of items
  itemCount: Int
  
  # When paginating forwards, are there more items?
  hasNextPage: Boolean
  
  # When paginating backwards, are there more items?
  hasPreviousPage: Boolean
}
`);
function preparePaginationInfoTC(sc) {
    if (sc.has('PaginationInfo')) {
        return sc.getOTC('PaginationInfo');
    }
    sc.set('PaginationInfo', PaginationInfoTC);
    return PaginationInfoTC;
}
exports.preparePaginationInfoTC = preparePaginationInfoTC;
function preparePaginationTC(tc, resolverName) {
    const schemaComposer = tc.schemaComposer;
    const name = `${tc.getTypeName()}${graphql_compose_1.upperFirst(resolverName || 'pagination')}`;
    if (schemaComposer.has(name)) {
        return schemaComposer.getOTC(name);
    }
    const paginationTC = schemaComposer.createObjectTC({
        name,
        description: 'List of items with pagination.',
        fields: {
            count: {
                type: 'Int',
                description: 'Total object count.',
            },
            items: {
                type: () => tc.NonNull.List,
                description: 'Array of objects.',
            },
            pageInfo: {
                type: preparePaginationInfoTC(schemaComposer).NonNull,
                description: 'Information to aid in pagination.',
            },
        },
    });
    return paginationTC;
}
exports.preparePaginationTC = preparePaginationTC;
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