From 36cc33f9e96a38ecea98ac8d26275b4828347d80 Mon Sep 17 00:00:00 2001
From: Julien Dessaux
Date: Sat, 1 Jul 2023 23:13:13 +0200
Subject: Moved the nodejs agent to its own subfolder to make room for my
 haskell agent

---
 lib/api.js            | 140 -------------------------------------
 lib/contracts.js      |  26 -------
 lib/priority_queue.js |  39 -----------
 lib/ships.js          | 187 --------------------------------------------------
 lib/systems.js        |  68 ------------------
 5 files changed, 460 deletions(-)
 delete mode 100644 lib/api.js
 delete mode 100644 lib/contracts.js
 delete mode 100644 lib/priority_queue.js
 delete mode 100644 lib/ships.js
 delete mode 100644 lib/systems.js

(limited to 'lib')

diff --git a/lib/api.js b/lib/api.js
deleted file mode 100644
index 667ef37..0000000
--- a/lib/api.js
+++ /dev/null
@@ -1,140 +0,0 @@
-import * as fs from 'fs';
-import * as events from 'events';
-
-import { getToken } from '../database/config.js';
-import { PriorityQueue } from './priority_queue.js';
-
-// queue processor module variables
-const bus = new events.EventEmitter(); // a bus to notify the queue processor to start processing messages
-let busy = false; // true if we are already sending api requests.
-let backoffSeconds = 0;
-let running = false;
-// other module variables
-let headers = undefined; // a file scope variable so that we only evaluate these once.
-let queue = new PriorityQueue(); // a priority queue to hold api calls we want to send, allows for throttling.
-
-// a single queue processor should be running at any time, otherwise there will be trouble!
-async function queue_processor() {
-	if (running) {
-		throw 'refusing to start a second queue processor';
-	}
-	running = true;
-	while(true) {
-		try {
-			if (backoffSeconds > 0) {
-				await sleep(backoffSeconds * 1000);
-				backoffSeconds = 0;
-			}
-			if (queue.isEmpty()) {
-				busy = false;
-				await new Promise(resolve => bus.once('send', resolve));
-				busy = true;
-			}
-			const before = new Date();
-			await send_this(queue.dequeue().element);
-			const duration = new Date() - before;
-			if (duration < 400) { // 333 should work, but 400 should still allow some manual requests to go through during development
-				await sleep(400 - duration);
-			}
-		} catch (e) {
-			running = false;
-			throw e;
-		}
-	}
-}
-queue_processor();
-
-// send takes a request object as argument and an optional context ctx
-// example request: {
-//    endpoint: the path part of the url to call,
-//    method: HTTP method for `fetch` call, defaults to 'GET',
-//    payload: optional json object that will be send along with the request,
-//    priority: optional priority value (defaults to 10, lower than 10 means the message will be sent faster)
-// }
-export function send(request, ctx) {
-	return new Promise((resolve, reject) => {
-		let data = {
-			ctx: ctx,
-			reject: reject,
-			request: request,
-			resolve: resolve,
-		};
-		queue.enqueue(data, request.priority ? request.priority : 10);
-		if (!busy) {
-			bus.emit('send'); // the queue was previously empty, let's wake up the queue_processor
-		}
-	});
-}
-
-// send_this take a data object as argument built in the send function above
-async function send_this(data) {
-	if (headers === undefined) {
-		const token = getToken();
-		if (token === null) {
-			throw 'Could not get token from the database. Did you init or register yet?';
-		}
-		headers = {
-			'Content-Type': 'application/json',
-			'Authorization': `Bearer ${token}`
-		};
-	}
-	let options = {
-		headers: headers,
-	};
-	if (data.request.method !== undefined) {
-		options['method'] = data.request.method;
-	}
-	if (data.request.payload !== undefined) {
-		options['body'] = JSON.stringify(data.request.payload);
-	}
-	fs.writeFileSync('log', JSON.stringify({event: 'send', date: new Date(), data: data}) + '\n', {flag: 'a+'});
-	try {
-		let response = await fetch(`https://api.spacetraders.io/v2${data.request.endpoint}`, options);
-		response = await response.json();
-		switch(response.error?.code) {
-			//case 401: // TODO 401 means a server reset happened
-			// TODO reject all promises in queue
-			// close database file
-			// rm database file
-			// logrotate
-			// spawnSync
-			// break;
-		case 429:  // 429 means rate limited, let's hold back as instructed
-			backoffSeconds = response.error.data.retryAfter;
-			queue.enqueue(data, 1);
-			break;
-		case 503:  // 503 means maintenance mode, let's hold back for 1 minute
-			backoffSeconds = 60;
-			queue.enqueue(data, 1);
-			break;
-		default: // no error!
-			fs.writeFileSync('log', JSON.stringify({event: 'response', date: new Date(), data: response}) + '\n', {flag: 'a+'});
-			return data.resolve(response);
-		}
-	} catch (err) {
-		fs.writeFileSync('log', JSON.stringify({event: 'error', date: new Date(), data: err}) + '\n', {flag: 'a+'});
-		switch(err.cause?.code) {
-		case 'EAI_AGAIN': // DNS lookup timed out error, let's hold back for 5 seconds
-			backoffSeconds = 5;
-			queue.enqueue(data, 1);
-			break;
-		case 'ECONNRESET':
-			queue.enqueue(data, 1);
-			break;
-		case 'UND_ERR_CONNECT_TIMEOUT':
-			queue.enqueue(data, 1);
-			break;
-		default:
-			data.reject(response);
-		}
-	}
-}
-
-export function debugLog(ctx) {
-	console.log(`--- ${Date()} -----------------------------------------------------------------------------`);
-	console.log(JSON.stringify(ctx, null, 2));
-}
-
-export function sleep(delay) {
-	return new Promise((resolve) => setTimeout(resolve, delay))
-}
diff --git a/lib/contracts.js b/lib/contracts.js
deleted file mode 100644
index 316e181..0000000
--- a/lib/contracts.js
+++ /dev/null
@@ -1,26 +0,0 @@
-import * as api from './api.js';
-import * as dbShips from '../database/ships.js';
-
-export async function accept(ctx) {
-	return await api.send({endpoint: `/my/contracts/${ctx.contract}/accept`, method: 'POST'});
-}
-
-export async function contracts() {
-	return await api.send({endpoint: '/my/contracts'});
-}
-
-export async function deliver(ctx) {
-	const response = await api.send({ endpoint: `/my/contracts/${ctx.contract}/deliver`, method: 'POST', payload: {
-		shipSymbol: ctx.symbol,
-		tradeSymbol: ctx.good,
-		units: ctx.units,
-	}});
-	if (response.error !== undefined) {
-		throw response;
-	}
-	dbShips.setShipCargo(ctx.symbol, response.data.cargo);
-}
-
-export async function fulfill(ctx) {
-	return await api.send({ endpoint: `/my/contracts/${ctx.contract}/fulfill`, method: 'POST'});
-}
diff --git a/lib/priority_queue.js b/lib/priority_queue.js
deleted file mode 100644
index da526b2..0000000
--- a/lib/priority_queue.js
+++ /dev/null
@@ -1,39 +0,0 @@
-export class QElement {
-	constructor(element, priority) {
-		this.element = element;
-		this.priority = priority;
-	}
-}
-
-export class PriorityQueue {
-	constructor(elt) {
-		this.items = [];
-		if (elt !== undefined) {
-			this.enqueue(elt, 0);
-		}
-	}
-
-	enqueue(element, priority) {
-		let qElement = new QElement(element, priority);
-
-		for (let i = 0; i < this.items.length; ++i) {
-			if (this.items[i].priority > qElement.priority) {
-				this.items.splice(i, 0, qElement);
-				return;
-			}
-		}
-		this.items.push(qElement);
-	}
-	dequeue() {
-		return this.items.shift(); // we would use pop to get the highest priority, shift() gives us the lowest priority
-	}
-	front() {
-		return this.items[0];
-	}
-	rear() {
-		return this.items[this.items.length - 1];
-	}
-	isEmpty() {
-		return this.items.length === 0;
-	}
-}
diff --git a/lib/ships.js b/lib/ships.js
deleted file mode 100644
index d75d78e..0000000
--- a/lib/ships.js
+++ /dev/null
@@ -1,187 +0,0 @@
-import * as api from './api.js';
-import * as dbConfig from '../database/config.js';
-import * as dbShips from '../database/ships.js';
-import * as dbSurveys from '../database/surveys.js';
-import * as systems from '../lib/systems.js';
-
-export async function extract(ctx) {
-	const ship = dbShips.getShip(ctx.symbol);
-	const asteroidFields = await systems.type({symbol: ship.nav.systemSymbol, type: 'ASTEROID_FIELD'});
-	// TODO if there are multiple fields, find the closest one?
-	await navigate({symbol: ctx.symbol, waypoint: asteroidFields[0].symbol});
-	await orbit(ctx);
-	// TODO handle surveying?
-	const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/extract`, method: 'POST'});
-	if (response.error !== undefined) {
-		switch(response.error.code) {
-		case 4000: // ship is on cooldown
-			await api.sleep(response.error.data.cooldown.remainingSeconds  * 1000);
-			return await extract(ctx);
-		case 4228: // ship is full
-			return null;
-		default: // yet unhandled error
-			throw response;
-		}
-	} else {
-		dbShips.setShipCargo(ctx.symbol, response.data.cargo);
-		await api.sleep(response.data.cooldown.remainingSeconds*1000);
-	}
-	return response;
-}
-
-export async function dock(ctx) {
-	const ship = dbShips.getShip(ctx.symbol);
-	if (ship.nav.status === 'DOCKED') {
-		return null;
-	}
-	const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/dock`, method: 'POST'});
-	if (response.error !== undefined) {
-		switch(response.error.code) {
-		case 4214: // ship is in transit
-			await api.sleep(response.error.data.secondsToArrival  * 1000);
-			return await dock(ctx);
-		default: // yet unhandled error
-			throw response;
-		}
-	}
-	dbShips.setShipNav(ctx.symbol, response.data.nav);
-	return response;
-}
-
-function hasMount(shipSymbol, mountSymbol) {
-	const ship = dbShips.getShip(shipSymbol);
-	return ship.mounts.filter(s => s.symbol === mountSymbol).length > 0;
-}
-
-export async function jump(ctx) {
-	// TODO
-	const response = await api.send({endpoint: `/my/ships/${ctx.ship}/jump`, method: 'POST', payload: { systemSymbol: ctx.system }});
-	await api.sleep(response.data.cooldown.remainingSeconds*1000);
-	return response;
-}
-
-export async function navigate(ctx) {
-	const ship = dbShips.getShip(ctx.symbol);
-	if (ship.nav.waypointSymbol === ctx.waypoint) {
-		return await orbit(ctx);
-	}
-	await orbit(ctx);
-	// TODO if we do not have enough fuel, make a stop to refuel along the way or drift to the destination
-	const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/navigate`, method: 'POST', payload: { waypointSymbol: ctx.waypoint }});
-	if (response.error !== undefined) {
-		switch(response.error.code) {
-		case 4214: // ship is in transit
-			await api.sleep(response.error.data.secondsToArrival  * 1000);
-			return await navigate(ctx);
-		default: // yet unhandled error
-			throw response;
-		}
-	}
-	dbShips.setShipFuel(ctx.symbol, response.data.fuel);
-	dbShips.setShipNav(ctx.symbol, response.data.nav);
-	const delay = new Date(response.data.nav.route.arrival) - new Date();
-	await api.sleep(delay);
-	response.data.nav.status = 'IN_ORBIT';
-	dbShips.setShipNav(ctx.symbol, response.data.nav);
-	await refuel(ctx);
-	return response;
-}
-
-export async function negotiate(ctx) {
-	// TODO
-	return await api.send({endpoint: `/my/ships/${ctx.ship}/negotiate/contract`, method: 'POST'});
-}
-
-export async function orbit(ctx) {
-	const ship = dbShips.getShip(ctx.symbol);
-	if (ship.nav.status === 'IN_ORBIT') {
-		return null;
-	}
-	const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/orbit`, method: 'POST'});
-	if (response.error !== undefined) {
-		switch(response.error.code) {
-		case 4214: // ship is in transit
-			await api.sleep(response.error.data.secondsToArrival  * 1000);
-			return await orbit(ctx);
-		default: // yet unhandled error
-			throw response;
-		}
-	}
-	dbShips.setShipNav(ctx.symbol, response.data.nav);
-	return response;
-}
-
-export async function purchase(ctx) {
-	const response = await api.send({endpoint: '/my/ships', method: 'POST', payload: {
-		shipType: ctx.shipType,
-		waypointSymbol: ctx.waypoint,
-	}});
-	if (response.error !== undefined) {
-		throw response;
-	}
-	dbShips.setShip(response.data.ship);
-	return response.data;
-}
-
-export async function refuel(ctx) {
-	const ship = dbShips.getShip(ctx.symbol);
-	if (ship.fuel.current >= ship.fuel.capacity * 0.9) {
-		return null;
-	}
-	// TODO check if our current waypoint has a marketplace (and sells fuel)?
-	await dock(ctx);
-	const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/refuel`, method: 'POST'});
-	if (response.error !== undefined) {
-		throw response;
-	}
-	dbShips.setShipFuel(ctx.symbol, response.data.fuel);
-	// TODO track credits
-	return response;
-}
-
-export async function sell(ctx) {
-	// TODO check if our current waypoint has a marketplace (and sells fuel)?
-	await dock(ctx);
-	const ship = dbShips.getShip(ctx.symbol);
-	const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/sell`, method: 'POST', payload: { symbol: ctx.good, units: ctx.units }});
-	if (response.error !== undefined) {
-		throw response;
-	}
-	dbShips.setShipCargo(ctx.symbol, response.data.cargo);
-	// TODO track credits
-	return response;
-}
-
-export async function ship(ctx) {
-	const response = await api.send({endpoint: `/my/ships/${ctx.symbol}`});
-	if (response.error !== undefined) {
-		throw response;
-	}
-	dbShips.setShip(response.data);
-	return response;
-}
-
-export async function survey(ctx) {
-	if (!hasMount(ctx.symbol, 'MOUNT_SURVEYOR_I')) { // we check if a surveyor is mounted on the ship
-		return null;
-	}
-	const ship = dbShips.getShip(ctx.symbol);
-	const asteroidFields = await systems.type({symbol: ship.nav.systemSymbol, type: 'ASTEROID_FIELD'});
-	// TODO if there are multiple fields, find the closest one?
-	await navigate({symbol: ctx.symbol, waypoint: asteroidFields[0].symbol});
-	await orbit(ctx);
-	const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/survey`, method: 'POST'});
-	api.debugLog(response);
-	if (response.error !== undefined) {
-		switch(response.error.code) {
-		case 4000: // ship is on cooldown
-			await api.sleep(response.error.data.cooldown.remainingSeconds  * 1000);
-			return await survey(ctx);
-		default: // yet unhandled error
-			throw response;
-		}
-	}
-	dbSurveys.set(response.data.surveys[0]);
-	await api.sleep(response.data.cooldown.remainingSeconds*1000);
-	return response;
-}
diff --git a/lib/systems.js b/lib/systems.js
deleted file mode 100644
index e03da6c..0000000
--- a/lib/systems.js
+++ /dev/null
@@ -1,68 +0,0 @@
-import * as api from './api.js';
-import * as db from '../database/systems.js';
-
-// Retrieves a shipyard's information for ctx.symbol
-export async function shipyard(ctx) {
-	const systemSymbol = ctx.symbol.match(/([^-]+-[^-]+)/)[1]; // TODO generalise this extraction
-	console.log(systemSymbol);
-	return await api.send({endpoint: `/systems/${systemSymbol}/waypoints/${ctx.symbol}/shipyard`});
-}
-
-// Retrieves the system's information for ctx.symbol and caches it in the database
-export async function system(ctx) {
-	let s = db.getSystem(ctx.symbol);
-	if (s === null) {
-		const response = await api.send({endpoint: `/systems/${ctx.symbol}`});
-		if (response.error !== undefined) {
-			switch(response.error.code) {
-			case 404:
-				throw `Error retrieving info for system ${ctx.symbol}: ${response.error.message}`;
-			default: // yet unhandled error
-				throw response;
-			}
-		}
-		s = response.data;
-		db.setSystem(s);
-	}
-	return s;
-}
-
-// Retrieves a list of waypoints that have a specific ctx.trait like a SHIPYARD or a MARKETPLACE in the system ctx.symbol
-export async function trait(ctx) {
-	const w = await waypoints(ctx);
-	return w.filter(s => s.traits.some(t => t.symbol === ctx.trait));
-}
-
-// Retrieves a list of waypoints that have a specific ctx.type like ASTEROID_FIELD in the system ctx.symbol
-export async function type(ctx, response) {
-	const w = await waypoints(ctx);
-	return w.filter(s => s.type === ctx.type);
-}
-
-// Retrieves the system's information for ctx.symbol and caches it in the database
-export async function waypoints(ctx) {
-	await system(ctx);
-	let updated = db.getSystemUpdated(ctx.symbol);
-	// TODO handle uncharted systems
-	if (updated === null) {
-		let waypoints = [];
-		for (let page=1; true; ++page) {
-			const response = await api.send({endpoint: `/systems/${ctx.symbol}/waypoints?limit=20&page=${page}`, priority: 98});
-			if (response.error !== undefined) {
-				switch(response.error.code) {
-				case 404:
-					throw `Error retrieving waypoints for system ${ctx.symbol}: ${response.error.message}`;
-				default: // yet unhandled error
-					throw response;
-				}
-			}
-			waypoints = waypoints.concat(response.data);
-			if (response.meta.total <= response.meta.limit * page) {
-				break;
-			}
-		}
-		db.setSystemWaypoints(ctx.symbol, waypoints);
-		return waypoints;
-	}
-	return db.getSystem(ctx.symbol).waypoints;
-}
-- 
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