gsender

/*
 * Copyright (C) 2021 Sienci Labs Inc.
 *
 * This file is part of gSender.
 *
 * gSender is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, under version 3 of the License.
 *
 * gSender is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with gSender.  If not, see <https://www.gnu.org/licenses/>.
 *
 * Contact for information regarding this program and its license
 * can be sent through gSender@sienci.com or mailed to the main office
 * of Sienci Labs Inc. in Waterloo, Ontario, Canada.
 *
 */

import events from "events";

// Workflow State
export const WORKFLOW_STATE_RUNNING = "running";
export const WORKFLOW_STATE_PAUSED = "paused";
export const WORKFLOW_STATE_IDLE = "idle";

class Workflow extends events.EventEmitter {
	state = WORKFLOW_STATE_IDLE;

	isRunning() {
		return this.state === WORKFLOW_STATE_RUNNING;
	}

	isPaused() {
		return this.state === WORKFLOW_STATE_PAUSED;
	}

	isIdle() {
		return this.state === WORKFLOW_STATE_IDLE;
	}

	start(...args) {
		if (this.state !== WORKFLOW_STATE_RUNNING) {
			this.state = WORKFLOW_STATE_RUNNING;
			this.emit("start", ...args);
		}
	}

	stop(...args) {
		if (this.state !== WORKFLOW_STATE_IDLE) {
			this.state = WORKFLOW_STATE_IDLE;
			this.emit("stop", ...args);
		}
	}

	stopTesting() {
		this.state = WORKFLOW_STATE_IDLE;
		this.emit("stop");
	}

	resumeTesting() {
		if (this.state === WORKFLOW_STATE_PAUSED) {
			this.state = WORKFLOW_STATE_RUNNING;
			this.emit("resume");
		}
	}

	pause(...args) {
		if (this.state === WORKFLOW_STATE_RUNNING) {
			this.state = WORKFLOW_STATE_PAUSED;
		}
		this.emit("pause", ...args);
	}

	resume(...args) {
		if (this.state === WORKFLOW_STATE_PAUSED) {
			this.state = WORKFLOW_STATE_RUNNING;
		}
		this.emit("resume", ...args);
	}
}

export default Workflow;