Beau/src/requestList.js

const Request = require('./request');
const RequestCache = require('./requestCache');

class RequestList {
    constructor(config = { REQUESTS: [] }) {
        this.list = this.loadRequests(config.REQUESTS, config.PLUGINS);
        this.cache = new RequestCache();

        this.cache.add(`env`, config.ENVIRONMENT);
    }

    async execByAlias(alias) {
        if (this.cache.exists(alias)) {
            return this.cache.get(alias);
        }

        const request = this.list.find(r => r.ALIAS === alias);

        if (typeof request === 'undefined') {
            throw new Error(`${alias} not found among the requests.`);
        }

        try {
            await this.fetchDependencies(Array.from(request.DEPENDENCIES));
            return await request.exec(this.cache);
        } catch (reason) {
            throw new Error(
                `Request ${request.VERB} ${
                    request.ENDPOINT
                } FAILED. \n${reason}`
            );
        }
    }

    async fetchDependencies(dependencies) {
        dependencies = dependencies.map(d => this.execByAlias(d));
        await Promise.all(dependencies);

        return this.cache;
    }

    loadRequests(REQUESTS, PLUGINS) {
        let requests = [];
        REQUESTS.forEach(request => {
            try {
                requests.push(new Request(request, PLUGINS));
            } catch (e) {
                throw new Error(`${request.request} was ignored: ${e}`);
            }
        });

        return requests;
    }
}

module.exports = RequestList;