import * as dbMarkets from '../database/markets.ts';
import * as libSystems from '../lib/systems.ts';
import {
	categorizeCargo,
	sortByDistanceFrom,
} from '../lib/utils.ts';
import { Ship } from '../lib/ships.ts';
import {
	CargoManifest,
	CommonThing,
} from '../lib/types.ts';

// example ctx { ship: {XXX}, keep: 'SILVER_ORE' }
export async function sell(ship: Ship, good: string): Promise<Ship> {
    outer: while(true) {
		const waypoint = await libSystems.waypoint(ship.nav.waypointSymbol);
		// first lets see what we want to sell
		let cargo = categorizeCargo(ship.cargo, good);
		// get the marketdata from our location
		const market = await libSystems.market(waypoint);
		// can we sell anything here?
		const goods = whatCanBeTradedAt(cargo.goods, market.imports.concat(market.exchange));
		for (let i = 0; i < goods.length; i++) {
			await ship.sell(goods[i].symbol);
		};
		// are we done selling everything we can?
		cargo = categorizeCargo(ship.cargo, good);
		if (Object.keys(cargo.goods).length === 0) {
			return ship;
		}
		// we need to move somewhere else to sell our remaining goods
		const markets = sortByDistanceFrom(ship.nav.route.destination, await libSystems.trait(ship.nav.systemSymbol, 'MARKETPLACE'));
		// check from the closest one if they import what we need to sell
		for (let i = 0; i < markets.length; i++) {
			const waypoint = await libSystems.waypoint(markets[i].data.symbol);
			const market = await libSystems.market(waypoint);
			// 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) {
				await ship.navigate(waypoint);
				continue outer;
			}
		}
		// check from the closest one if they exchange what we need to sell
		for (let i = 0; i < markets.length; i++) {
			const waypoint = await libSystems.waypoint(markets[i].data.symbol);
			const market = await libSystems.market(waypoint);
			// if we can sell there we need to go
			if (whatCanBeTradedAt(cargo.goods, market.exchange).length > 0) {
				await ship.navigate(waypoint);
				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 );
}