Implemented a basic extraction loop

database/000_init.sql

@@ -0,0 +1,8 @@
+CREATE TABLE schema_version (
+	version INTEGER NOT NULL
+);
+CREATE TABLE config (
+	id INTEGER PRIMARY KEY,
+	key TEXT NOT NULL UNIQUE,
+	value TEXT NOT NULL
+);

database/config.js

@@ -0,0 +1,23 @@
+import db from './db.js';
+
+const getTokenStatement = db.prepare(`SELECT value from config where key = 'token';`);
+const registerAgentStatement = db.prepare(`INSERT INTO config(key, value) VALUES ('symbol', ?), ('faction', ?), ('token', ?);`);
+
+export function getToken() {
+	try {
+		return getTokenStatement.get().value;
+	} catch (err) {
+		console.log(err);
+		return null;
+	}
+}
+
+export function registerAgent(symbol, faction, token) {
+	try {
+		registerAgentStatement.run(symbol, faction, token);
+		return true;
+	} catch (err) {
+		console.log(err);
+		return false;
+	}
+}

database/db.js

@@ -0,0 +1,29 @@
+import fs from 'fs';
+import Database from 'better-sqlite3';
+
+const allMigrations = [
+	'database/000_init.sql',
+];
+
+const db = new Database(
+	process.env.NODE_ENV === 'test' ? 'test.db' : 'spacetraders.db',
+	process.env.NODE_ENV === 'development' ? { verbose: console.log } : null
+);
+db.pragma('foreign_keys = ON');
+
+db.transaction(function migrate() {
+	let version;
+	try {
+		version = db.prepare('SELECT version FROM schema_version').get().version;
+	} catch {
+		version = 0;
+	}
+	if (version === allMigrations.length) return;
+	while (version < allMigrations.length) {
+		db.exec(fs.readFileSync(allMigrations[version], 'utf8'));
+		version++;
+	}
+	db.exec(`DELETE FROM schema_version; INSERT INTO schema_version (version) VALUES (${version});`);
+})();
+
+export default db;