awv3/communication/rest.js

⚡ AWV3 embedded CAD

import Parser from '../core/parser';
import Base from './base';
import EventEmitter from 'events';
import { createContext, mergeContext, handleResult } from '../core/parser';

export default class Rest extends Base {
    constructor(options) {
        super(options);
    }

    connect(url) {
        this.url = this.url || url;
        return fetch(`${this.url}/login`).then(res => res.json()).then(res => {
            if (res.status === 'permitted') {
                this.alive = true;
                this.id = res.id;
                return this;
            }
        });
    }

    disconnect() {
        this.alive = false;
        this.emit('disconnected');
        return fetch(`${this.url}/logout/${this.id}`);
    }

    request(command, factory) {
        return new Promise((resolve, reject) => {
            let context = createContext(factory, resolve, reject, command);
            context.options.callback({ type: Parser.Factory.Started, context });

            return fetch(`${this.url}/execute/${this.id}`, {
                headers: {
                    Accept: 'application/json',
                    'Content-Type': 'application/json'
                },
                method: 'POST',
                body: JSON.stringify(command)
            })
                .then(res => res.json())
                .then(res => handleResult(context, res))
                .then(async res => {
                    let results = await Promise.all(context.promises);
                    context = mergeContext(context);
                    resolve(context);
                });
        }).then(results => {
            results.options.callback({ type: Parser.Factory.Finished, context: results });
            return results;
        });
    }
}