v1.0

server/db/index.js

@@ -0,0 +1,62 @@
+import initSqlJs from 'sql.js';
+import path from 'path';
+import fs from 'fs';
+import { fileURLToPath } from 'url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const dataDir = path.join(__dirname, '..', 'data');
+if (!fs.existsSync(dataDir)) fs.mkdirSync(dataDir, { recursive: true });
+const dbPath = process.env.DATABASE_PATH || path.join(dataDir, 'configurateur.db');
+
+let db = null;
+
+function toSqlitePlaceholders(sql) {
+  return sql.replace(/\$(\d+)/g, '?');
+}
+
+function save() {
+  if (db && dbPath) {
+    const data = db.export();
+    fs.writeFileSync(dbPath, Buffer.from(data));
+  }
+}
+
+async function getDb() {
+  if (db) return db;
+  const SQL = await initSqlJs({
+    locateFile: (file) => path.join(__dirname, '..', 'node_modules', 'sql.js', 'dist', file)
+  });
+  let buffer;
+  if (fs.existsSync(dbPath)) {
+    buffer = fs.readFileSync(dbPath);
+  }
+  db = new SQL.Database(buffer || null);
+  return db;
+}
+
+export const dbReady = getDb();
+
+export const query = async (sql, params = []) => {
+  const database = await getDb();
+  const sqliteSql = toSqlitePlaceholders(sql);
+  const stmt = database.prepare(sqliteSql);
+  stmt.bind(Array.isArray(params) ? params : []);
+  const rows = [];
+  while (stmt.step()) rows.push(stmt.getAsObject());
+  stmt.free();
+  return { rows };
+};
+
+export const run = async (sql, params = []) => {
+  const database = await getDb();
+  const sqliteSql = toSqlitePlaceholders(sql);
+  database.run(sqliteSql, Array.isArray(params) ? params : []);
+  save();
+  return {};
+};
+
+const pool = {
+  query: (sql, params) => query(sql, params)
+};
+
+export default pool;