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spacetraders/lib/systems.js

49 lines
1.8 KiB
JavaScript

import * as api from './api.js';
import * as db from '../database/systems.js';
// 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 s = await system(ctx);
return s.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 s = await system(ctx);
return s.filter(s => s.type === ctx.type);
}
// Retrieves the system's information for ctx.symbol and cache 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}/waypoints?limit=20&page=1`});
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;
}
}
if (response.meta !== undefined && response.meta.total > response.meta.limit) {
throw `Error retrieving waypoints for system ${ctx.symbol}: Pagination is not implemented yet!`;
}
s = response.data;
db.setSystem(ctx.symbol, s);
}
return s;
}
export async function systems(ctx) {
const response = await api.send({endpoint: `/systems?limit=20&page=1`});
// TODO pagination
return response;
}
// Retrieves a shipyard's information for ctx.symbol
export async function shipyard(ctx) {
const systemSymbol = ctx.symbol.match(/([^-]+-[^-]+)/)[1]; // TODO generalise this extraction
console.log(systemSymbol);
return await api.send({endpoint: `/systems/${systemSymbol}/waypoints/${ctx.symbol}/shipyard`});
}