88 lines
2.9 KiB
TypeScript
88 lines
2.9 KiB
TypeScript
import { webcrypto } from 'node:crypto';
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import { readFileSync, readdirSync } from 'node:fs';
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import { DatabaseSync } from 'node:sqlite';
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import { runInNewContext } from 'node:vm';
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import ts from 'typescript';
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import * as engine from '../game/engine';
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import * as bots from '../game/bots';
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import type * as Rooms from '../db/rooms';
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/** Execute the production room module and SQL, with a hook immediately before its CAS. */
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export function unitStore(runBots = bots.runBots) {
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const sqlite = new DatabaseSync(':memory:');
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const hooks: { beforeWrite?: () => Promise<void> } = {};
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const writes: { expected: number; changes: number }[] = [];
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for (const file of readdirSync(new URL('../drizzle/', import.meta.url))
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.filter((f) => f.endsWith('.sql'))
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.sort())
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sqlite.exec(
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readFileSync(new URL('../drizzle/' + file, import.meta.url), 'utf8'),
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);
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class Statement {
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values: (string | number | null)[] = [];
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constructor(readonly sql: string) {}
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bind(...values: (string | number | null)[]) {
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this.values = values;
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return this;
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}
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async first() {
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return sqlite.prepare(this.sql).get(...this.values) ?? null;
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}
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async run() {
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const continuation = this.sql.startsWith('UPDATE rooms SET state');
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if (continuation) await hooks.beforeWrite?.();
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const changes = Number(
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sqlite.prepare(this.sql).run(...this.values).changes,
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);
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if (continuation)
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writes.push({ expected: Number(this.values[3]), changes });
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return { meta: { changes } };
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}
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}
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const database = {
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prepare: (sql: string) => new Statement(sql),
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batch: async (statements: Statement[]) => {
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sqlite.exec('BEGIN');
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try {
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const results = [];
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for (const statement of statements) results.push(await statement.run());
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sqlite.exec('COMMIT');
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return results;
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} catch (error) {
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sqlite.exec('ROLLBACK');
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throw error;
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}
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},
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};
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function loadRooms() {
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const exports = {};
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runInNewContext(
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ts.transpileModule(
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readFileSync(new URL('../db/rooms.ts', import.meta.url), 'utf8'),
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{
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compilerOptions: {
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module: ts.ModuleKind.CommonJS,
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target: ts.ScriptTarget.ES2022,
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},
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},
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).outputText,
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{
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exports,
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crypto: webcrypto,
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TextEncoder,
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structuredClone,
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// Keep persisted JSON values in the test realm for strict structural assertions.
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JSON,
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require: (name: string) => {
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if (name === 'cloudflare:workers') return { env: { DB: database } };
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if (name === '@/game/engine') return engine;
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if (name === '@/game/bots') return { ...bots, runBots };
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throw new Error('Unexpected module ' + name);
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},
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},
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);
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return exports as typeof Rooms;
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}
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return { rooms: loadRooms(), restart: loadRooms, sqlite, hooks, writes };
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}
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