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[javascript] added database function to fetch all the ships present in a specific system

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This commit is contained in:
Julien Dessaux 2023-09-12 23:06:10 +02:00
parent 4551c1a2dd
commit e52662f829
Signed by: adyxax
GPG key ID: F92E51B86E07177E
2 changed files with 11 additions and 0 deletions
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1
nodejs/database/002_ships.sql
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@ -3,3 +3,4 @@ CREATE TABLE ships (
data JSON NOT NULL
);
CREATE UNIQUE INDEX ships_data_symbol ON ships (json_extract(data, '$.symbol'));
CREATE INDEX ships_data_nav_systemSymbol ON ships (json_extract(data, '$.nav.systemSymbol'));

10
nodejs/database/ships.js
View file

@ -2,6 +2,7 @@ import db from './db.js';
const addShipStatement = db.prepare(`INSERT INTO ships(data) VALUES (json(?));`);
const getShipStatement = db.prepare(`SELECT data FROM ships WHERE data->>'symbol' = ?;`);
const getShipsAtStatement = db.prepare(`SELECT data FROM ships WHERE data->>'$.nav.systemSymbol' = ?;`);
const setShipCargoStatement = db.prepare(`UPDATE ships SET data = (SELECT json_set(data, '$.cargo', json(:cargo)) FROM ships WHERE data->>'symbol' = :symbol) WHERE data->>'symbol' = :symbol;`);
const setShipFuelStatement = db.prepare(`UPDATE ships SET data = (SELECT json_set(data, '$.fuel', json(:fuel)) FROM ships WHERE data->>'symbol' = :symbol) WHERE data->>'symbol' = :symbol;`);
const setShipNavStatement = db.prepare(`UPDATE ships SET data = (SELECT json_set(data, '$.nav', json(:nav)) FROM ships WHERE data->>'symbol' = :symbol) WHERE data->>'symbol' = :symbol;`);
@ -15,6 +16,15 @@ export function getShip(symbol) {
return JSON.parse(data.data);
}
export function getShipsAt(symbol) {
const data = getShipsAtStatement.all(symbol);
if (data === undefined) {
return null;
}
return data.map(elt => JSON.parse(elt.data));
}
export function setShip(data) {
if (getShip(data.symbol) === null) {
return addShipStatement.run(JSON.stringify(data)).lastInsertRowid;