diff options
author | Julien Dessaux | 2023-05-24 23:03:19 +0200 |
---|---|---|
committer | Julien Dessaux | 2023-05-24 23:03:19 +0200 |
commit | 9963ab79b7c7392d5f87c98cd55953ffa004efd9 (patch) | |
tree | efcd42cbe0f2614c863a05c77d797c7a4645b003 /lib/systems.js | |
parent | Implemented a basic extraction loop (diff) | |
download | spacetraders-9963ab79b7c7392d5f87c98cd55953ffa004efd9.tar.gz spacetraders-9963ab79b7c7392d5f87c98cd55953ffa004efd9.tar.bz2 spacetraders-9963ab79b7c7392d5f87c98cd55953ffa004efd9.zip |
Rewrote the api rate limiter with promises instead of callbacks
Diffstat (limited to '')
-rw-r--r-- | lib/systems.js | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/lib/systems.js b/lib/systems.js new file mode 100644 index 0000000..ad354e4 --- /dev/null +++ b/lib/systems.js @@ -0,0 +1,36 @@ +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 getSystem(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 getSystem(ctx); + return s.filter(s => s.type === ctx.type); +} + +// Retrieves the system's information for ctx.symbol and cache it in the database +async function getSystem(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; +} |