Genesis

src/db/client.js

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+import Database from 'better-sqlite3';
+import { mkdirSync } from 'fs';
+import { dirname, resolve } from 'path';
+import { fileURLToPath } from 'url';
+import env from '../config/env.js';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const defaultPath = resolve(__dirname, '../../data/dashback.db');
+
+let db;
+
+function getDbPath() {
+    return env.sqlitePath || defaultPath;
+}
+
+function initSchema(database) {
+    database.exec(`
+        CREATE TABLE IF NOT EXISTS google_auth (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            email TEXT NOT NULL UNIQUE COLLATE NOCASE,
+            created_at TEXT NOT NULL DEFAULT (datetime('now'))
+        )
+    `);
+}
+
+export function getDb() {
+    if (!db) {
+        const dbPath = getDbPath();
+        mkdirSync(dirname(dbPath), { recursive: true });
+        db = new Database(dbPath);
+        db.pragma('journal_mode = WAL');
+        initSchema(db);
+    }
+    return db;
+}
+
+export function ensureConnection() {
+    getDb().prepare('SELECT 1').get();
+}
+
+export function closeDb() {
+    if (db) {
+        db.close();
+        db = undefined;
+    }
+}

src/db/googleAuth.js

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+import { getDb } from './client.js';
+
+export function listAllowedEmails() {
+    return getDb()
+        .prepare('SELECT id, email, created_at FROM google_auth ORDER BY email COLLATE NOCASE')
+        .all();
+}
+
+export function getAllowedEmail(email) {
+    return getDb()
+        .prepare('SELECT id, email, created_at FROM google_auth WHERE email = ? COLLATE NOCASE')
+        .get(email);
+}
+
+export function getAllowedEmailById(id) {
+    return getDb()
+        .prepare('SELECT id, email, created_at FROM google_auth WHERE id = ?')
+        .get(id);
+}
+
+export function addAllowedEmail(email) {
+    const normalized = email.trim().toLowerCase();
+    const result = getDb()
+        .prepare('INSERT INTO google_auth (email) VALUES (?)')
+        .run(normalized);
+    return getAllowedEmailById(result.lastInsertRowid);
+}
+
+export function removeAllowedEmail(email) {
+    const normalized = email.trim().toLowerCase();
+    return getDb()
+        .prepare('DELETE FROM google_auth WHERE email = ? COLLATE NOCASE')
+        .run(normalized).changes > 0;
+}