"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
// @see https://www.apollographql.com/docs/apollo-server/features/data-sources.html#Using-Memcached-Redis-as-a-cache-storage-backend
const exotic_1 = require("exotic");
const apollo_server_cache_redis_1 = require("apollo-server-cache-redis");
const log_1 = require("../log");
const InMemoryKeyValueCache_1 = require("./InMemoryKeyValueCache");
const FileSystemJsonKeyValueCache_1 = require("./FileSystemJsonKeyValueCache");
exports.config = new Map();
/**
 * @todo cleanup typings & conditional
 */
function toCache() {
    log_1.logger.info('[cache] createCache');
    if (exports.config.has('cache')) {
        return exports.config.get('cache');
    }
    else {
        if (process.env.CACHE_TYPE === 'redis') {
            log_1.logger.info('[cache] createCache: redis');
            const cache = new apollo_server_cache_redis_1.RedisCache({
                host: 'localhost',
                port: 6379,
            });
            cache.rehydrate = exotic_1.NO_OP;
            exports.config.set('cache', cache);
            return cache;
        }
        else if (process.env.CACHE_TYPE === 'fs') {
            log_1.logger.info('[cache] createCache: fs');
            const cache = new FileSystemJsonKeyValueCache_1.FileSystemJsonKeyValueCache();
            exports.config.set('cache', cache);
            return cache;
        }
        else if (process.env.CACHE_TYPE === 'memory' ||
            process.env.CACHE_TYPE === 'none' ||
            !process.env.CACHE_TYPE) {
            log_1.logger.info('[cache] createCache: memory');
            const cache = new InMemoryKeyValueCache_1.KeyValueCache();
            exports.config.set('cache', cache);
            return cache;
        }
        else {
            throw new TypeError('invalid CACHE_TYPE value. Must be `memory` | `none` | `fs` | `redis` | undefined');
        }
    }
}
exports.toCache = toCache;
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