1 files changed, 72 insertions, 0 deletions
diff --git a/nodejs/automation/selling.ts b/nodejs/automation/selling.ts
new file mode 100644
index 0000000..dbdacfe
--- /dev/null
+++ b/nodejs/automation/selling.ts
@@ -0,0 +1,72 @@
+import * as dbMarkets from '../database/markets.ts';
+import * as dbShips from '../database/ships.ts';
+import * as api from '../lib/api.ts';
+import * as libShips from '../lib/ships.ts';
+import * as libSystems from '../lib/systems.ts';
+import * as utils from '../lib/utils.ts';
+import { CargoManifest } from '../model/cargo.ts';
+import { CommonThing } from '../model/common.ts';
+import { Ship } from '../model/ship.ts';
+
+// example ctx { ship: {XXX}, keep: 'SILVER_ORE' }
+export async function sell(ship: Ship, good: string): Promise<Ship> {
+    outer: while(true) {
+		// first lets see what we want to sell
+		let cargo = utils.categorizeCargo(ship.cargo, good);
+		// get the marketdata from our location
+		const market = await libSystems.market(ship.nav.waypointSymbol);
+		// can we sell anything here?
+		const goods = whatCanBeTradedAt(cargo.goods, market.imports.concat(market.exchange));
+		for (let i = 0; i < goods.length; i++) {
+			const symbol = goods[i].symbol;
+			ship = await libShips.sell(ship, good);
+		};
+		// are we done selling everything we can?
+		cargo = utils.categorizeCargo(ship.cargo, good);
+		if (Object.keys(cargo.goods).length === 0) {
+			return ship;
+		}
+		// we need to move somewhere else to sell our remaining goods
+		// first we look into markets in our system
+		const rawMarkets = await libSystems.trait(ship.nav.systemSymbol, 'MARKETPLACE');
+		// sorted by distance from where we are
+		const markets = rawMarkets.map(function (m) { return {
+			data: m,
+			distance: (m.x - ship.nav.route.destination.x) ** 2 + (m.y - ship.nav.route.destination.y) ** 2,
+		}});
+		markets.sort(function(a, b) {
+			if (a.distance < b.distance) {
+				return -1;
+			} else if (a.distance > b.distance) {
+				return 1;
+			}
+			return 0;
+		});
+		// check from the closest one if they import what we need to sell
+		for (let i = 0; i < markets.length; i++) {
+			const waypointSymbol = markets[i].data.symbol;
+			const market = await libSystems.market(waypointSymbol);
+			// if we have no data on the market we need to go there and see
+			// and if we have data and can sell there we need to go too
+			if (market === null || whatCanBeTradedAt(cargo.goods, market.imports).length > 0) {
+				ship = await libShips.navigate(ship, waypointSymbol);
+				continue outer;
+			}
+		}
+		// check from the closest one if they exchange what we need to sell
+		for (let i = 0; i < markets.length; i++) {
+			const waypointSymbol = markets[i].data.symbol;
+			const market = await libSystems.market(waypointSymbol);
+			// if we can sell there we need to go
+			if (whatCanBeTradedAt(cargo.goods, market.exchange).length > 0) {
+				ship = await libShips.navigate(ship, waypointSymbol);
+				continue outer;
+			}
+		}
+		throw new Error(`Ship {ship.symbol} has found no importing or exchanging market for its cargo in the system`);
+    }
+}
+
+function whatCanBeTradedAt(cargo: CargoManifest, goods: Array<CommonThing>): Array<CommonThing> {
+    return goods.filter(g => cargo[g.symbol] !== undefined );
+}