Versie 0.2.0

server/db/conn.mjs

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+// Generated, do not edit. sha256:95f28c26a77b79beac5f8c6818bd25243362641c1d8549949427a847e4f810f9
+import { DatabaseSync } from 'node:sqlite';
+
+export const BUSY_TIMEOUT_MS = 5000;
+
+let db = null;
+
+export function openDatabase(pad) {
+  if (db) throw new Error('A database connection is already open; close it first with closeDatabase().');
+  db = new DatabaseSync(pad, { enableForeignKeyConstraints: true });
+  db.exec(`PRAGMA journal_mode = WAL`);
+  db.exec(`PRAGMA synchronous = NORMAL`);
+  db.exec(`PRAGMA busy_timeout = ${BUSY_TIMEOUT_MS}`);
+  return db;
+}
+
+export function database() { return db; }
+
+export function withOtherDatabase(pad, fn) {
+  const vorige = db;
+  db = null;
+  try {
+    openDatabase(pad);
+    const uit = fn();
+    if (uit && typeof uit.then === 'function') throw new Error('withOtherDatabase: fn must be synchronous.');
+    return uit;
+  } finally {
+    closeDatabase();
+    db = vorige;
+  }
+}
+
+export function closeDatabase() {
+  if (!db) return;
+  db.close();
+  db = null;
+}
+
+export function pragmaStand() {
+  const lees = (naam, veld) => database().prepare(`PRAGMA ${naam}`).get()[veld];
+  return {
+    foreignKeys: lees('foreign_keys', 'foreign_keys') === 1,
+    journalMode: lees('journal_mode', 'journal_mode'),
+    synchronous: lees('synchronous', 'synchronous'),
+    busyTimeout: lees('busy_timeout', 'timeout'),
+  };
+}
+
+const bind = params => params.map(v => {
+  if (v === undefined) return null;
+  if (typeof v === 'boolean') return v ? 1n : 0n;
+  if (typeof v === 'number' && Number.isInteger(v)) return BigInt(v);
+  return v;
+});
+
+export function run(sql, params) {
+  if (params === undefined) db.exec(sql);
+  else db.prepare(sql).run(...bind(params));
+}
+
+export function all(sql, params = []) {
+  return db.prepare(sql).all(...bind(params)).map(rij => ({ ...rij }));
+}
+
+export function one(sql, params = []) {
+  const rijen = all(sql, params);
+  return rijen.length ? rijen[0] : null;
+}
+
+export function lastId() {
+  const r = one(`SELECT last_insert_rowid() AS id`);
+  return r ? r.id : null;
+}