@stewartmcgown/apollo-response-cache/dist/directives/purgeCache.js

Caching and invalidation mechanisms (plugins, directives) of Apollo GraphQL

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.PurgeCacheDirective = void 0;
const graphql_1 = require("graphql");
const graphql_tools_1 = require("graphql-tools");
const lodash_1 = require("lodash");
const utils_1 = require("../utils");
exports.PurgeCacheDirective = ({ extraNodesPath, typeResolver, idResolver, }) => {
    class BasePurgeCacheDirective extends graphql_tools_1.SchemaDirectiveVisitor {
        visitFieldDefinition(field) {
            const { resolve = graphql_1.defaultFieldResolver } = field;
            field.resolve = async (...args) => {
                const { type, identifier } = this.args;
                const [root, _, { __redis }] = args;
                const result = await resolve.apply(this, args);
                if (!__redis) {
                    return result;
                }
                // parse results
                const results = Array.isArray(result) ? [...result] : [result];
                const parsedResults = [];
                results.map((node) => {
                    const nodeType = typeResolver ? typeResolver(type, node) : type;
                    const nodeId = idResolver
                        ? idResolver(type, node)
                        : lodash_1.get(node, identifier) || lodash_1.get(node, 'id') || lodash_1.get(node, '_id');
                    if (!nodeType || !nodeId) {
                        return;
                    }
                    parsedResults.push({ type: nodeType, id: nodeId });
                });
                // merge results and extras
                const extraNodes = extraNodesPath
                    ? lodash_1.get(result, extraNodesPath, [])
                    : [];
                const nodes = [...extraNodes, ...parsedResults];
                // invalidate
                nodes.forEach((node) => {
                    utils_1.invalidateFQC({
                        node,
                        redis: __redis,
                    });
                });
                return result;
            };
        }
    }
    return BasePurgeCacheDirective;
};