Moved the nodejs agent to its own subfolder to make room for my haskell agent

nodejs/automation/automation.js

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+import * as dbConfig from '../database/config.js';
+import * as dbShips from '../database/ships.js';
+import * as exploration from './exploration.js';
+
+// This function registers then inits the database
+export async function register(symbol, faction) {
+	const response = await fetch('https://api.spacetraders.io/v2/register', {
+		method: 'POST',
+		headers: {
+			'Content-Type': 'application/json',
+		},
+		body: JSON.stringify({
+			symbol: symbol,
+			faction: faction,
+		}),
+	});
+	const json = await response.json();
+	console.log(JSON.stringify(response, null, 2));
+	if (response.error !== undefined) {
+		throw response;
+	}
+	dbConfig.registerAgent(json.data);
+	exploration.init();
+	dbShips.setShip(json.data.ship);
+	// TODO contract
+}

nodejs/automation/contracting.js

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+import * as mining from './mining.js';
+import * as dbShips from '../database/ships.js';
+import * as api from '../lib/api.js';
+import * as contracts from '../lib/contracts.js';
+import * as ships from '../lib/ships.js';
+import * as systems from '../lib/systems.js';
+
+export async function auto(ctx) {
+	let ship = dbShips.getShip(ctx.symbol);
+	// Fetch our contracts in the system the ship currently is in
+	let cs = await contracts.contracts();
+	cs = cs.data.filter(c => c.terms.deliver[0].destinationSymbol.startsWith(ship.nav.systemSymbol));
+	if (cs === []) throw `No contract at ${ctx.symbol}'s location`;
+	let contract = cs[0];
+	if (!contract.accepted) {
+		console.log(new Date(), `accepting contract ${contract.id}`);
+		await contracts.accept({contract: contract.id});
+	}
+	const good = contract.terms.deliver[0].tradeSymbol;
+	const deliveryPoint = contract.terms.deliver[0].destinationSymbol;
+	const asteroidFields = await systems.type({symbol: ship.nav.systemSymbol, type: 'ASTEROID_FIELD'});
+	const asteroidField = asteroidFields[0].symbol;
+	while (true) {
+		ship = dbShips.getShip(ctx.symbol);
+		// If we are in transit, we wait until we arrive
+		const delay = new Date(ship.nav.route.arrival) - new Date();
+		if (delay > 0) await api.sleep(delay);
+		// Then it depends on where we are
+		let goodCargo = ship.cargo.inventory.filter(i => i.symbol === good)[0];
+		// the switch makes this 'resumable'
+		switch (ship.nav.waypointSymbol) {
+		case asteroidField:
+			let response = await mining.mineUntilFullOf({good: good, symbol: ctx.symbol});
+			await ships.navigate({symbol: ctx.symbol, waypoint: deliveryPoint});
+			break;
+		case deliveryPoint:
+			await ships.dock({symbol: ctx.symbol});
+			await ships.refuel({symbol: ctx.symbol});
+			if (goodCargo !== undefined) {
+				console.log(`delivering ${goodCargo.units} of ${good}`);
+				await contracts.deliver({contract: contract.id, symbol: ctx.symbol, good: good, units: goodCargo.units });
+			}
+			await ships.navigate({symbol: ctx.symbol, waypoint: asteroidField});
+			await ships.dock({symbol: ctx.symbol});
+			await ships.refuel({symbol: ctx.symbol});
+			await ships.orbit({symbol: ctx.symbol});
+			break;
+		default:
+			await ships.navigate({symbol: ctx.symbol, waypoint: asteroidField});
+			await ships.dock({symbol: ctx.symbol});
+			await ships.refuel({symbol: ctx.symbol});
+			await ships.orbit({symbol: ctx.symbol});
+		}
+	}
+}

nodejs/automation/exploration.js

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+import * as db from '../database/systems.js';
+import * as api from '../lib/api.js';
+
+// Retrieves all systems information, should be called only once after registering
+export async function init() {
+	if (db.isInit()) {
+		return;
+	}
+	for (let page=1; true; ++page) {
+		const response = await api.send({endpoint: `/systems?limit=20&page=${page}`, priority:100});
+		if (response.error !== undefined) {
+			throw response;
+		}
+		response.data.forEach(system => db.setSystem(system));
+		if (response.meta.total <= response.meta.limit * page) {
+			break;
+		}
+	}
+	console.log('Finished retrieving all systems information');
+	db.init();
+}

nodejs/automation/mining.js

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+import * as dbShips from '../database/ships.js';
+import * as api from '../lib/api.js';
+import * as ships from '../lib/ships.js';
+
+// example ctx { good: 'SILVER_ORE', symbol: 'ADYXAX-2' }
+// returns the number of units of the good the ship holds
+export async function mineUntilFullOf(ctx) {
+	while(true) {
+		let cargo = await mineUntilFull({symbol: ctx.symbol});
+		let good = cargo.inventory.filter(i => i.symbol === ctx.good)[0];
+		const antimatter = cargo.inventory.filter(i => i.symbol === 'ANTIMATTER')[0];
+		const junk = cargo.inventory.filter(i => i.symbol !== ctx.good && i.symbol !== 'ANTIMATTER');
+		if ((good?.units ?? 0) + (antimatter?.units ?? 0) >= cargo.capacity * 0.9) { // > 90% full of the valuable goods
+			return good.units;
+		} else { // we are full but need to sell junk
+			for (let i=0; i<junk.length; ++i) {
+				await ships.sell({symbol: ctx.symbol, good: junk[i].symbol, units: junk[i].units});
+			}
+		}
+	}
+}
+
+// example ctx { symbol: 'ADYXAX-2' }
+// extract the ship's cargo contents when more than 80% full then returns the ships cargo object
+async function mineUntilFull(ctx) {
+	while(true) {
+		const ship = dbShips.getShip(ctx.symbol);
+		if (ship.cargo.units >= ship.cargo.capacity * 0.9) return ship.cargo;
+		if (await ships.extract({symbol: ctx.symbol}) === null)
+			ship = await ship(ctx); // refresh the ships status from the server just in case
+	}
+}
+
+// TODO surveying the asteroid field