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import fs from 'fs';

import { Socket } from 'socket.io';

import ConsoleLog from './ConsoleLog';

import Paths from './Paths';

import { commandExists } from './interceptors/util/fs';

const spawn = require('child_process').spawn;

const rmdir = require('rimraf');

const { rgPath } = require('@vscode/ripgrep');

export function dateToHHMMSS(d: Date) {

if (isNaN(d.getMonth()) || isNaN(d.getDate())) {

return "Invalid Date";

}

const monthDay = d.getMonth() + 1 + '/' + d.getDate();

return monthDay + ' ' + d.getHours().toString().padStart(2, '0') + ':' + d.getMinutes().toString().padStart(2, '0') + ':' + d.getSeconds().toString().padStart(2, '0');

}

export default class APFileSystem {

private socket: Socket;

public constructor(socket: Socket) {

this.socket = socket;

this.log('constructor');

}

private log(method: string, ...args: any[]) {

if (process.env.FILE_SYSTEM_LOG === '1') {

const time = dateToHHMMSS(new Date());

const u = this.socket.handshake.url;

const urlPath = u.includes('allproxy') || u.includes('mitmproxy') || u.includes('jlogviewer') ? u : '';

console.log(time, this.socket.handshake.address, urlPath, method, ...args);

}

private toPlatformPath(path: string) {

if (Paths.sep() === "\\") {

path = path.replace(/:/g, '-');

}

return Paths.platform(Paths.getDataDir() + path);

}

public listen() {

this.log('listen');

ConsoleLog.debug('APFileSystem.listen');

// mkdir

this.socket.on('mkdir', (path: string) => {

this.log('mkdir', path);

const dir = this.toPlatformPath(path);

ConsoleLog.debug('ApFileSystem.mkdir', dir);

fs.mkdirSync(dir);

})

// rmdir

this.socket.on('rmdir', (path: string) => {

this.log('rmdir', path);

const platformPath = this.toPlatformPath(path);

ConsoleLog.debug('ApFileSystem.rmdir', platformPath);

rmdir(platformPath, () => { });

})

// writeFile

this.socket.on('appendFile', (path: string, data: string, ack: () => void) => {

this.log('appendFile', path);

try {

const file = this.toPlatformPath(path);

ConsoleLog.debug('ApFileSystem.appendFile', file);

fs.writeFileSync(file, data, { flag: 'a' });

} catch (e) {

console.log('afFileSystem.appendFile', e);

}

ack();

})

// writeFile

this.socket.on('writeFile', (path: string, data: string, ack: () => void) => {

this.log('writeFile', path);

try {

const file = this.toPlatformPath(path);

ConsoleLog.debug('ApFileSystem.writeFile', file);

fs.writeFileSync(file, data, { flag: 'w' });

} catch (e) {

console.log('afFileSystem.writeFile', e);

}

ack();

})

// deleteFile

this.socket.on('deleteFile', (path: string, ack: () => void) => {

this.log('deleteFile', path);

try {

const file = this.toPlatformPath(path);

ConsoleLog.debug('ApFileSystem.deleteFile', file);

fs.rmSync(file);

} catch (e) {

console.log('afFileSystem.deleteFile', e);

}

ack();

})

// renameFile

this.socket.on('renameFile', (oldPath: string, newPath: string, ack: () => void) => {

this.log('renameFile', oldPath, newPath);

try {

const oldFile = this.toPlatformPath(oldPath);

const newFile = this.toPlatformPath(newPath);

ConsoleLog.debug('ApFileSystem.renameFile', oldFile, newFile);

fs.renameSync(oldFile, newFile);

} catch (e) {

console.log('afFileSystem.renameFile', e);

}

ack();

})

// exists

this.socket.on('exists', (path: string, callback: (exists: boolean) => void) => {

this.log('exists', path);

try {

const platformPath = this.toPlatformPath(path);

ConsoleLog.debug('ApFileSystem.exists', platformPath);

callback(fs.existsSync(platformPath));

} catch (e) {

callback(false);

}

})

// readDir

this.socket.on('readDir', (path: string, callback: (files: string[]) => void) => {

this.log('readDir', path);

try {

const platformPath = this.toPlatformPath(path);

const files = fs.readdirSync(platformPath);

ConsoleLog.debug('ApFileSystem.readDir', platformPath, files);

callback(files);

} catch (e) {

console.log('afFileSystem.readDir', e);

}

})

// grepDir - find all files in a directory with a matching string

this.socket.on('grepDir', async (path: string, match: string, callback: (files: string[]) => void) => {

this.log('grepDir', path, match);

try {

const subDir = Paths.platform(path);

const dontUseParallel = true;

let output: string;

if (!dontUseParallel && await commandExists('parallel')) {

output = await run(`find ${subDir} -type f -print0 | parallel -0 ${rgPath} -l -m 1 "${match}" {}`, Paths.getDataDir());

} else {

output = await run(`find ${subDir} -type f -exec ${rgPath} -l -m 1 "${match}" {} +`, Paths.getDataDir());

}

const files = output.toString().split('\n');

files.pop();

ConsoleLog.debug('ApFileSystem.grepDir', subDir, match, files);

callback(files);

} catch (e) {

console.log('afFileSystem.grepDir', e);

}

})

// readFile

this.socket.on('readFile', (path: string, offset: number, chunkSize: number, callback: (data: string, eof: boolean) => void) => {

if (offset === 0) this.log('readFile', path);

try {

const file = this.toPlatformPath(path);

const mode = 'win32' ? 'r' : 444;

const fd = fs.openSync(file, mode);

const data = Buffer.alloc(chunkSize);

const read = fs.readSync(fd, data, 0, chunkSize, offset);

fs.closeSync(fd);

const size = fs.statSync(file).size;

const eof = offset + chunkSize >= size;

callback(data.subarray(0, read).toString(), eof);

ConsoleLog.debug('ApFileSystem.readFile', file, offset, chunkSize, eof, data.toString());

} catch (e) {

console.log('afFileSystem.readFile', e);

}

})

}

export async function run(command: string, cwd: string): Promise<string> {

//console.log(command);

let response = ''

return await new Promise<string>(resolve => {

const tokens = command.split(' ');

const p = spawn(tokens[0], tokens.slice(1), { cwd, shell: true })

p.stdout.on('data', (data: Buffer) => {

//console.log(data.toString());

response += data.toString();

})

p.stderr.on('data', (data: Buffer) => {

console.error(data.toString());

})

p.on('exit', () => {

resolve(response);

})

}