// tstest:deno:allowAll
/**
 * Tests for Rust provider
 */

import * as path from 'node:path';
import * as fs from 'node:fs/promises';
import { tap, expect } from '@push.rocks/tapbundle';
import { SmartFs, SmartFsProviderRust } from '../ts/index.js';

// Create temp directory for tests
const tempDir = path.join(process.cwd(), '.nogit', 'test-temp-rust');

// Create test instance
const rustProvider = new SmartFsProviderRust();
const smartFs = new SmartFs(rustProvider);

tap.preTask('setup temp directory', async () => {
  await fs.rm(tempDir, { recursive: true, force: true });
  await fs.mkdir(tempDir, { recursive: true });
});

tap.test('should create SmartFS instance with Rust provider', async () => {
  expect(smartFs).toBeInstanceOf(SmartFs);
  expect(smartFs.getProviderName()).toEqual('rust');
});

tap.test('should write and read a file', async () => {
  const filePath = path.join(tempDir, 'test.txt');
  await smartFs.file(filePath).write('Hello, World!');
  const content = await smartFs.file(filePath).encoding('utf8').read();
  expect(content).toEqual('Hello, World!');
});

tap.test('should write atomically', async () => {
  const filePath = path.join(tempDir, 'atomic.txt');
  await smartFs.file(filePath).atomic().write('Atomic write test');
  const content = await smartFs.file(filePath).encoding('utf8').read();
  expect(content).toEqual('Atomic write test');
});

tap.test('should check if file exists', async () => {
  const filePath = path.join(tempDir, 'exists-test.txt');
  await smartFs.file(filePath).write('exists');

  const exists = await smartFs.file(filePath).exists();
  expect(exists).toEqual(true);

  const notExists = await smartFs.file(path.join(tempDir, 'nonexistent.txt')).exists();
  expect(notExists).toEqual(false);
});

tap.test('should get file stats', async () => {
  const filePath = path.join(tempDir, 'stats-test.txt');
  await smartFs.file(filePath).write('stats test');
  const stats = await smartFs.file(filePath).stat();

  expect(stats).toHaveProperty('size');
  expect(stats).toHaveProperty('mtime');
  expect(stats).toHaveProperty('birthtime');
  expect(stats.isFile).toEqual(true);
  expect(stats.isDirectory).toEqual(false);
});

tap.test('should delete a file', async () => {
  const filePath = path.join(tempDir, 'delete-test.txt');
  await smartFs.file(filePath).write('to delete');
  await smartFs.file(filePath).delete();

  const exists = await smartFs.file(filePath).exists();
  expect(exists).toEqual(false);
});

tap.test('should copy a file', async () => {
  const srcPath = path.join(tempDir, 'copy-src.txt');
  const destPath = path.join(tempDir, 'copy-dest.txt');
  await smartFs.file(srcPath).write('copy me');
  await smartFs.file(srcPath).copy(destPath);

  const content = await smartFs.file(destPath).encoding('utf8').read();
  expect(content).toEqual('copy me');
});

tap.test('should move a file', async () => {
  const srcPath = path.join(tempDir, 'move-src.txt');
  const destPath = path.join(tempDir, 'move-dest.txt');
  await smartFs.file(srcPath).write('move me');
  await smartFs.file(srcPath).move(destPath);

  const exists = await smartFs.file(srcPath).exists();
  expect(exists).toEqual(false);

  const content = await smartFs.file(destPath).encoding('utf8').read();
  expect(content).toEqual('move me');
});

tap.test('should create and list a directory', async () => {
  const dirPath = path.join(tempDir, 'list-test');
  await smartFs.directory(dirPath).create();

  await smartFs.file(path.join(dirPath, 'a.txt')).write('a');
  await smartFs.file(path.join(dirPath, 'b.txt')).write('b');

  const entries = await smartFs.directory(dirPath).list();
  expect(entries.length).toEqual(2);
  const names = entries.map(e => e.name).sort();
  expect(names).toEqual(['a.txt', 'b.txt']);
});

tap.test('should check directory exists', async () => {
  const dirPath = path.join(tempDir, 'exists-dir');
  await smartFs.directory(dirPath).create();

  const exists = await smartFs.directory(dirPath).exists();
  expect(exists).toEqual(true);

  const notExists = await smartFs.directory(path.join(tempDir, 'nonexistent-dir')).exists();
  expect(notExists).toEqual(false);
});

tap.test('should delete directory recursively', async () => {
  const dirPath = path.join(tempDir, 'delete-dir');
  await smartFs.directory(dirPath).create();
  await smartFs.file(path.join(dirPath, 'file.txt')).write('data');

  await smartFs.directory(dirPath).delete();

  const exists = await smartFs.directory(dirPath).exists();
  expect(exists).toEqual(false);
});

tap.test('should list directory recursively', async () => {
  const dirPath = path.join(tempDir, 'recursive-test');
  await smartFs.directory(dirPath).create();
  await smartFs.directory(path.join(dirPath, 'sub')).create();
  await smartFs.file(path.join(dirPath, 'root.txt')).write('root');
  await smartFs.file(path.join(dirPath, 'sub', 'child.txt')).write('child');

  const entries = await smartFs.directory(dirPath).recursive().list();
  const names = entries.map(e => e.name).sort();
  expect(names).toContain('root.txt');
  expect(names).toContain('child.txt');
  expect(names).toContain('sub');
});

// ── Append file ──────────────────────────────────────────────────────────────

tap.test('should append to a file', async () => {
  const filePath = path.join(tempDir, 'append-test.txt');
  await smartFs.file(filePath).write('Hello');
  await smartFs.file(filePath).append(' World!');
  const content = await smartFs.file(filePath).encoding('utf8').read();
  expect(content).toEqual('Hello World!');
});

// ── Binary Buffer round-trip ─────────────────────────────────────────────────

tap.test('should write and read binary data (Buffer)', async () => {
  const filePath = path.join(tempDir, 'binary-test.bin');
  const binaryData = Buffer.from([0x00, 0x01, 0x02, 0xFF, 0xFE, 0xFD, 0x80, 0x7F]);

  await rustProvider.writeFile(filePath, binaryData);
  const result = await rustProvider.readFile(filePath, { encoding: 'buffer' });

  expect(Buffer.isBuffer(result)).toEqual(true);
  expect(Buffer.compare(result as Buffer, binaryData)).toEqual(0);
});

// ── Streaming ────────────────────────────────────────────────────────────────

tap.test('should read a file via stream', async () => {
  const filePath = path.join(tempDir, 'stream-read.txt');
  const testData = 'Stream test data with enough content to verify streaming works correctly';
  await smartFs.file(filePath).write(testData);

  const readStream = await smartFs.file(filePath).readStream();
  const chunks: Uint8Array[] = [];
  const reader = readStream.getReader();
  let done = false;
  while (!done) {
    const result = await reader.read();
    done = result.done;
    if (result.value) chunks.push(result.value);
  }
  const content = Buffer.concat(chunks.map(c => Buffer.from(c))).toString('utf8');
  expect(content).toEqual(testData);
});

tap.test('should write a file via stream', async () => {
  const filePath = path.join(tempDir, 'stream-write.txt');
  const testData = 'Writing via stream';

  const writeStream = await smartFs.file(filePath).writeStream();
  const writer = writeStream.getWriter();
  await writer.write(new Uint8Array(Buffer.from(testData)));
  await writer.close();

  const content = await smartFs.file(filePath).encoding('utf8').read();
  expect(content).toEqual(testData);
});

// ── Watch ────────────────────────────────────────────────────────────────────

tap.test('should watch for file changes', async () => {
  const dirPath = path.join(tempDir, 'watch-test');
  await smartFs.directory(dirPath).create();
  const filePath = path.join(dirPath, 'watched.txt');

  const received: any[] = [];
  const watcher = await smartFs
    .watch(dirPath)
    .onAll((event) => {
      received.push(event);
    })
    .start();

  // Give watcher time to start
  await new Promise((resolve) => setTimeout(resolve, 300));

  await smartFs.file(filePath).write('changed');

  // Wait for event to propagate
  await new Promise((resolve) => setTimeout(resolve, 500));

  await watcher.stop();

  expect(received.length).toBeGreaterThan(0);
  expect(received[0]).toHaveProperty('type');
  expect(received[0]).toHaveProperty('path');
});

// ── Transactions ─────────────────────────────────────────────────────────────

tap.test('should execute a transaction', async () => {
  const file1 = path.join(tempDir, 'tx-file1.txt');
  const file2 = path.join(tempDir, 'tx-file2.txt');

  await smartFs.transaction()
    .file(file1).write('tx content 1')
    .file(file2).write('tx content 2')
    .commit();

  const c1 = await smartFs.file(file1).encoding('utf8').read();
  const c2 = await smartFs.file(file2).encoding('utf8').read();
  expect(c1).toEqual('tx content 1');
  expect(c2).toEqual('tx content 2');
});

// ── Directory filter ─────────────────────────────────────────────────────────

tap.test('should filter directory listings with regex', async () => {
  const dirPath = path.join(tempDir, 'filter-test');
  await smartFs.directory(dirPath).create();
  await smartFs.file(path.join(dirPath, 'file1.ts')).write('ts');
  await smartFs.file(path.join(dirPath, 'file2.js')).write('js');
  await smartFs.file(path.join(dirPath, 'file3.ts')).write('ts');

  const entries = await smartFs.directory(dirPath).filter(/\.ts$/).list();
  expect(entries.length).toEqual(2);
  const allTs = entries.every(e => e.name.endsWith('.ts'));
  expect(allTs).toEqual(true);
});

// ── Shutdown ─────────────────────────────────────────────────────────────────

tap.test('should shutdown the Rust provider', async () => {
  await rustProvider.shutdown();
  await fs.rm(tempDir, { recursive: true, force: true });
});

export default tap.start();