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Reworked the systems handling and caching with sqlite

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This commit is contained in:
Julien Dessaux 2023-05-31 01:19:31 +02:00
parent afe2db8a35
commit 61b5c8493e
Signed by: adyxax
GPG key ID: F92E51B86E07177E
4 changed files with 129 additions and 46 deletions
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111
lib/systems.js
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@ -1,44 +1,23 @@
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 ${ctx.symbol}: Pagination is not implemented yet!`;
}
s = response.data;
db.setSystem(ctx.symbol, s);
// Retrieves all systems information, should be called only once after registering
export async function init(ctx) {
if (db.isInit()) {
return;
}
return s;
}
export async function systems(ctx) {
const response = await api.send({endpoint: `/systems?limit=20&page=1`});
// TODO pagination
return response;
for (let page=1; true; ++page) {
const response = await api.send({endpoint: `/systems?limit=20&page=${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();
}
// Retrieves a shipyard's information for ctx.symbol
@ -47,3 +26,61 @@ export async function shipyard(ctx) {
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}: ${response.error.message}`;
default: // yet unhandled error
throw response;
}
}
s = response.data;
db.setSystem(s);
}
return s;
}
// Retrieves a list of waypoints that have a specific ctx.trait like a SHIPYARD or a MARKETPLACE in the system ctx.symbol
export async function trait(ctx) {
const s = await system(ctx);
return s.waypoints.filter(s => s.traits.some(t => t.symbol === ctx.trait));
}
// Retrieves a list of waypoints that have a specific ctx.type like ASTEROID_FIELD in the system ctx.symbol
export async function type(ctx, response) {
const s = await system(ctx);
return s.waypoints.filter(s => s.type === ctx.type);
}
// Retrieves the system's information for ctx.symbol and caches it in the database
export async function waypoints(ctx) {
await system(ctx);
let updated = db.getSystemUpdated(ctx.symbol);
if (updated === null) {
let waypoints = [];
for (let page=1; true; ++page) {
const response = await api.send({endpoint: `/systems/${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;
}