sketches-service-impl.ts

import { injectable, inject } from '@theia/core/shared/inversify';
import * as fs from 'fs';
import * as os from 'os';
import * as temp from 'temp';
import * as tempDir from 'temp-dir';
import * as path from 'path';
import * as crypto from 'crypto';
import { ncp } from 'ncp';
import { promisify } from 'util';
import URI from '@theia/core/lib/common/uri';
import { FileUri } from '@theia/core/lib/node';
import { isWindows, isOSX } from '@theia/core/lib/common/os';
import { ConfigService } from '../common/protocol/config-service';
import {
  SketchesService,
  Sketch,
  SketchRef,
  SketchContainer,
} from '../common/protocol/sketches-service';
import { firstToLowerCase } from '../common/utils';
import { NotificationServiceServerImpl } from './notification-service-server';
import { EnvVariablesServer } from '@theia/core/lib/common/env-variables';
import { CoreClientAware } from './core-client-provider';
import {
  ArchiveSketchRequest,
  LoadSketchRequest,
} from './cli-protocol/cc/arduino/cli/commands/v1/commands_pb';
import { duration } from '../common/decorators';
import * as glob from 'glob';
import { Deferred } from '@theia/core/lib/common/promise-util';

const WIN32_DRIVE_REGEXP = /^[a-zA-Z]:\\/;

const prefix = '.arduinoIDE-unsaved';

@injectable()
export class SketchesServiceImpl
  extends CoreClientAware
  implements SketchesService
{
  private sketchSuffixIndex = 1;
  private lastSketchBaseName: string;
  // If on macOS, the `temp-dir` lib will make sure there is resolved realpath.
  // If on Windows, the `C:\Users\KITTAA~1\AppData\Local\Temp` path will be resolved and normalized to `C:\Users\kittaakos\AppData\Local\Temp`.
  // Note: VS Code URI normalizes the drive letter. `C:` will be converted into `c:`.
  // https://github.com/Microsoft/vscode/issues/68325#issuecomment-462239992
  private tempDirRealpath = isOSX
    ? tempDir
    : maybeNormalizeDrive(fs.realpathSync.native(tempDir));

  @inject(ConfigService)
  protected readonly configService: ConfigService;

  @inject(NotificationServiceServerImpl)
  protected readonly notificationService: NotificationServiceServerImpl;

  @inject(EnvVariablesServer)
  protected readonly envVariableServer: EnvVariablesServer;

  async getSketches({
    uri,
    exclude,
  }: {
    uri?: string;
    exclude?: string[];
  }): Promise<SketchContainer> {
    const [/*old,*/ _new] = await Promise.all([
      // this.getSketchesOld({ uri, exclude }),
      this.getSketchesNew({ uri, exclude }),
    ]);
    return _new;
  }

  @duration()
  async getSketchesNew({
    uri,
    exclude,
  }: {
    uri?: string;
    exclude?: string[];
  }): Promise<SketchContainer> {
    const root = await this.root(uri);
    const pathToAllSketchFiles = await new Promise<string[]>(
      (resolve, reject) => {
        glob(
          '/!(libraries|hardware)/**/*.{ino,pde}',
          { root },
          (error, results) => {
            if (error) {
              reject(error);
            } else {
              resolve(results);
            }
          }
        );
      }
    );
    // Sort by path length to filter out nested sketches, such as the `Nested_folder` inside the `Folder` sketch.
    //
    // `directories#user`
    // |
    // +--Folder
    //    |
    //    +--Folder.ino
    //    |
    //    +--Nested_folder
    //       |
    //       +--Nested_folder.ino
    pathToAllSketchFiles.sort((left, right) => left.length - right.length);
    const container = SketchContainer.create(
      uri ? path.basename(root) : 'Sketchbook'
    );
    const getOrCreateChildContainer = (
      parent: SketchContainer,
      segments: string[]
    ) => {
      if (segments.length === 1) {
        throw new Error(
          `Expected at least two segments relative path: ['ExampleSketchName', 'ExampleSketchName.{ino,pde}]. Was: ${segments}`
        );
      }
      if (segments.length === 2) {
        return parent;
      }
      const label = segments[0];
      const existingSketch = parent.sketches.find(
        (sketch) => sketch.name === label
      );
      if (existingSketch) {
        // If the container has a sketch with the same label, it cannot have a child container.
        // See above example about how to ignore nested sketches.
        return undefined;
      }
      let child = parent.children.find((child) => child.label === label);
      if (!child) {
        child = SketchContainer.create(label);
        parent.children.push(child);
      }
      return child;
    };
    for (const pathToSketchFile of pathToAllSketchFiles) {
      const relative = path.relative(root, pathToSketchFile);
      if (!relative) {
        console.warn(
          `Could not determine relative sketch path from the root <${root}> to the sketch <${pathToSketchFile}>. Skipping. Relative path was: ${relative}`
        );
        continue;
      }
      const segments = relative.split(path.sep);
      if (segments.length < 2) {
        // folder name, and sketch name.
        console.warn(
          `Expected at least one segment relative path from the root <${root}> to the sketch <${pathToSketchFile}>. Skipping. Segments were: ${segments}.`
        );
        continue;
      }
      // the folder name and the sketch name must match. For example, `Foo/foo.ino` is invalid.
      // drop the folder name from the sketch name, if `.ino` or `.pde` remains, it's valid
      const sketchName = segments[segments.length - 2];
      const sketchFilename = segments[segments.length - 1];
      const sketchFileExtension = segments[segments.length - 1].replace(
        new RegExp(sketchName),
        ''
      );
      if (sketchFileExtension !== '.ino' && sketchFileExtension !== '.pde') {
        console.warn(
          `Mismatching sketch file <${sketchFilename}> and sketch folder name <${sketchName}>. Skipping`
        );
        continue;
      }
      const child = getOrCreateChildContainer(container, segments);
      if (child) {
        child.sketches.push({
          name: sketchName,
          uri: FileUri.create(pathToSketchFile).toString(),
        });
      }
    }
    return container;
  }

  private async root(uri?: string | undefined): Promise<string> {
    return FileUri.fsPath(uri ?? (await this.sketchbookUri()));
  }

  private async sketchbookUri(): Promise<string> {
    const { sketchDirUri } = await this.configService.getConfiguration();
    return sketchDirUri;
  }

  async loadSketch(uri: string): Promise<SketchWithDetails> {
    const { client, instance } = await this.coreClient;
    const req = new LoadSketchRequest();
    const requestSketchPath = FileUri.fsPath(uri);
    req.setSketchPath(requestSketchPath);
    req.setInstance(instance);
    const stat = new Deferred<fs.Stats | Error>();
    fs.lstat(requestSketchPath, (err, result) =>
      err ? stat.resolve(err) : stat.resolve(result)
    );
    const sketch = await new Promise<SketchWithDetails>((resolve, reject) => {
      client.loadSketch(req, async (err, resp) => {
        if (err) {
          reject(err);
          return;
        }
        const responseSketchPath = maybeNormalizeDrive(resp.getLocationPath());
        if (requestSketchPath !== responseSketchPath) {
          console.warn(
            `Warning! The request sketch path was different than the response sketch path from the CLI. This could be a potential bug. Request: <${requestSketchPath}>, response: <${responseSketchPath}>.`
          );
        }
        const resolvedStat = await stat.promise;
        if (resolvedStat instanceof Error) {
          console.error(
            `The CLI could load the sketch from ${requestSketchPath}, but stating the folder has failed.`
          );
          reject(resolvedStat);
          return;
        }
        const { mtimeMs } = resolvedStat;
        resolve({
          name: path.basename(responseSketchPath),
          uri: FileUri.create(responseSketchPath).toString(),
          mainFileUri: FileUri.create(resp.getMainFile()).toString(),
          otherSketchFileUris: resp
            .getOtherSketchFilesList()
            .map((p) => FileUri.create(p).toString()),
          additionalFileUris: resp
            .getAdditionalFilesList()
            .map((p) => FileUri.create(p).toString()),
          rootFolderFileUris: resp
            .getRootFolderFilesList()
            .map((p) => FileUri.create(p).toString()),
          mtimeMs,
        });
      });
    });
    return sketch;
  }

  async maybeLoadSketch(uri: string): Promise<Sketch | undefined> {
    return this._isSketchFolder(uri);
  }

  private get recentSketchesFsPath(): Promise<string> {
    return this.envVariableServer
      .getConfigDirUri()
      .then((uri) => path.join(FileUri.fsPath(uri), 'recent-sketches.json'));
  }

  private async loadRecentSketches(
    fsPath: string
  ): Promise<Record<string, number>> {
    let data: Record<string, number> = {};
    try {
      const raw = await promisify(fs.readFile)(fsPath, {
        encoding: 'utf8',
      });
      data = JSON.parse(raw);
    } catch {}
    return data;
  }

  async markAsRecentlyOpened(uri: string): Promise<void> {
    let sketch: Sketch | undefined = undefined;
    try {
      sketch = await this.loadSketch(uri);
    } catch {
      return;
    }
    if (await this.isTemp(sketch)) {
      return;
    }

    const fsPath = await this.recentSketchesFsPath;
    const data = await this.loadRecentSketches(fsPath);
    const now = Date.now();
    data[sketch.uri] = now;

    let toDeleteUri: string | undefined = undefined;
    if (Object.keys(data).length > 10) {
      let min = Number.MAX_SAFE_INTEGER;
      for (const uri of Object.keys(data)) {
        if (min > data[uri]) {
          min = data[uri];
          toDeleteUri = uri;
        }
      }
    }

    if (toDeleteUri) {
      delete data[toDeleteUri];
    }

    await promisify(fs.writeFile)(fsPath, JSON.stringify(data, null, 2));
    this.recentlyOpenedSketches().then((sketches) =>
      this.notificationService.notifyRecentSketchesDidChange({ sketches })
    );
  }

  async recentlyOpenedSketches(): Promise<Sketch[]> {
    const configDirUri = await this.envVariableServer.getConfigDirUri();
    const fsPath = path.join(
      FileUri.fsPath(configDirUri),
      'recent-sketches.json'
    );
    let data: Record<string, number> = {};
    try {
      const raw = await promisify(fs.readFile)(fsPath, {
        encoding: 'utf8',
      });
      data = JSON.parse(raw);
    } catch {}

    const sketches: SketchWithDetails[] = [];
    for (const uri of Object.keys(data).sort(
      (left, right) => data[right] - data[left]
    )) {
      try {
        const sketch = await this.loadSketch(uri);
        sketches.push(sketch);
      } catch {}
    }

    return sketches;
  }

  async cloneExample(uri: string): Promise<Sketch> {
    const sketch = await this.loadSketch(uri);
    const parentPath = await new Promise<string>((resolve, reject) => {
      temp.mkdir({ prefix }, (err, dirPath) => {
        if (err) {
          reject(err);
          return;
        }
        resolve(dirPath);
      });
    });
    const destinationUri = FileUri.create(
      path.join(parentPath, sketch.name)
    ).toString();
    const copiedSketchUri = await this.copy(sketch, { destinationUri });
    return this.loadSketch(copiedSketchUri);
  }

  async createNewSketch(): Promise<Sketch> {
    const monthNames = [
      'jan',
      'feb',
      'mar',
      'apr',
      'may',
      'jun',
      'jul',
      'aug',
      'sep',
      'oct',
      'nov',
      'dec',
    ];
    const today = new Date();
    const parentPath = await new Promise<string>((resolve, reject) => {
      temp.mkdir({ prefix }, (createError, dirPath) => {
        if (createError) {
          reject(createError);
          return;
        }
        fs.realpath.native(dirPath, (resolveError, resolvedDirPath) => {
          if (resolveError) {
            reject(resolveError);
            return;
          }
          resolve(resolvedDirPath);
        });
      });
    });
    const sketchBaseName = `sketch_${
      monthNames[today.getMonth()]
    }${today.getDate()}`;
    const config = await this.configService.getConfiguration();
    const sketchbookPath = FileUri.fsPath(config.sketchDirUri);
    let sketchName: string | undefined;

    // If it's another day, reset the count of sketches created today
    if (this.lastSketchBaseName !== sketchBaseName) this.sketchSuffixIndex = 1;

    let nameFound = false;
    while (!nameFound) {
      const sketchNameCandidate = `${sketchBaseName}${sketchIndexToLetters(
        this.sketchSuffixIndex++
      )}`;
      // Note: we check the future destination folder (`directories.user`) for name collision and not the temp folder!
      const sketchExists = await promisify(fs.exists)(
        path.join(sketchbookPath, sketchNameCandidate)
      );
      if (!sketchExists) {
        nameFound = true;
        sketchName = sketchNameCandidate;
      }
    }

    if (!sketchName) {
      throw new Error('Cannot create a unique sketch name');
    }
    this.lastSketchBaseName = sketchBaseName;

    const sketchDir = path.join(parentPath, sketchName);
    const sketchFile = path.join(sketchDir, `${sketchName}.ino`);
    await promisify(fs.mkdir)(sketchDir, { recursive: true });
    await promisify(fs.writeFile)(
      sketchFile,
      `void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}
`,
      { encoding: 'utf8' }
    );
    return this.loadSketch(FileUri.create(sketchDir).toString());
  }

  async getSketchFolder(uri: string): Promise<Sketch | undefined> {
    if (!uri) {
      return undefined;
    }
    let currentUri = new URI(uri);
    while (currentUri && !currentUri.path.isRoot) {
      const sketch = await this._isSketchFolder(currentUri.toString());
      if (sketch) {
        return sketch;
      }
      currentUri = currentUri.parent;
    }
    return undefined;
  }

  async isSketchFolder(uri: string): Promise<boolean> {
    const sketch = await this._isSketchFolder(uri);
    return !!sketch;
  }

  private async _isSketchFolder(
    uri: string
  ): Promise<SketchWithDetails | undefined> {
    const fsPath = FileUri.fsPath(uri);
    let stat: fs.Stats | undefined;
    try {
      stat = await promisify(fs.lstat)(fsPath);
    } catch {}
    if (stat && stat.isDirectory()) {
      const basename = path.basename(fsPath);
      const files = await promisify(fs.readdir)(fsPath);
      for (let i = 0; i < files.length; i++) {
        if (files[i] === basename + '.ino' || files[i] === basename + '.pde') {
          try {
            const sketch = await this.loadSketch(
              FileUri.create(fsPath).toString()
            );
            return sketch;
          } catch {}
        }
      }
    }
    return undefined;
  }

  async isTemp(sketch: SketchRef): Promise<boolean> {
    // Consider the following paths:
    // macOS:
    // - Temp folder: /var/folders/k3/d2fkvv1j16v3_rz93k7f74180000gn/T
    // - Sketch folder: /private/var/folders/k3/d2fkvv1j16v3_rz93k7f74180000gn/T/arduino-ide2-A0337D47F86B24A51DF3DBCF2CC17925
    // Windows:
    // - Temp folder: C:\Users\KITTAA~1\AppData\Local\Temp
    // - Sketch folder: c:\Users\kittaakos\AppData\Local\Temp\.arduinoIDE-unsaved2022431-21824-116kfaz.9ljl\sketch_may31a
    // Both sketches are valid and temp, but this function will give a false-negative result if we use the default `os.tmpdir()` logic.
    const sketchPath = maybeNormalizeDrive(FileUri.fsPath(sketch.uri));
    const tempPath = this.tempDirRealpath; // https://github.com/sindresorhus/temp-dir
    const result =
      sketchPath.indexOf(prefix) !== -1 && sketchPath.startsWith(tempPath);
    console.log('isTemp?', result, sketch.uri);
    return result;
  }

  async copy(
    sketch: Sketch,
    { destinationUri }: { destinationUri: string }
  ): Promise<string> {
    const source = FileUri.fsPath(sketch.uri);
    const exists = await promisify(fs.exists)(source);
    if (!exists) {
      throw new Error(`Sketch does not exist: ${sketch}`);
    }
    // Nothing to do when source and destination are the same.
    if (sketch.uri === destinationUri) {
      await this.loadSketch(sketch.uri); // Sanity check.
      return sketch.uri;
    }

    const copy = async (sourcePath: string, destinationPath: string) => {
      return new Promise<void>((resolve, reject) => {
        ncp.ncp(sourcePath, destinationPath, async (error) => {
          if (error) {
            reject(error);
            return;
          }
          const newName = path.basename(destinationPath);
          try {
            const oldPath = path.join(
              destinationPath,
              new URI(sketch.mainFileUri).path.base
            );
            const newPath = path.join(destinationPath, `${newName}.ino`);
            if (oldPath !== newPath) {
              await promisify(fs.rename)(oldPath, newPath);
            }
            await this.loadSketch(FileUri.create(destinationPath).toString()); // Sanity check.
            resolve();
          } catch (e) {
            reject(e);
          }
        });
      });
    };
    // https://github.com/arduino/arduino-ide/issues/65
    // When copying `/path/to/sketchbook/sketch_A` to `/path/to/sketchbook/sketch_A/anything` on a non-POSIX filesystem,
    // `ncp` makes a recursion and copies the folders over and over again. In such cases, we copy the source into a temp folder,
    // then move it to the desired destination.
    const destination = FileUri.fsPath(destinationUri);
    let tempDestination = await new Promise<string>((resolve, reject) => {
      temp.track().mkdir({ prefix }, async (err, dirPath) => {
        if (err) {
          reject(err);
          return;
        }
        resolve(dirPath);
      });
    });
    tempDestination = path.join(tempDestination, sketch.name);
    await fs.promises.mkdir(tempDestination, { recursive: true });
    await copy(source, tempDestination);
    await copy(tempDestination, destination);
    return FileUri.create(destination).toString();
  }

  async archive(sketch: Sketch, destinationUri: string): Promise<string> {
    await this.loadSketch(sketch.uri); // sanity check
    const { client } = await this.coreClient;
    const archivePath = FileUri.fsPath(destinationUri);
    // The CLI cannot override existing archives, so we have to wipe it manually: https://github.com/arduino/arduino-cli/issues/1160
    if (await promisify(fs.exists)(archivePath)) {
      await promisify(fs.unlink)(archivePath);
    }
    const req = new ArchiveSketchRequest();
    req.setSketchPath(FileUri.fsPath(sketch.uri));
    req.setArchivePath(archivePath);
    await new Promise<string>((resolve, reject) => {
      client.archiveSketch(req, (err) => {
        if (err) {
          reject(err);
          return;
        }
        resolve(destinationUri);
      });
    });
    return destinationUri;
  }

  async getIdeTempFolderUri(sketch: Sketch): Promise<string> {
    const genBuildPath = await this.getIdeTempFolderPath(sketch);
    return FileUri.create(genBuildPath).toString();
  }

  async getIdeTempFolderPath(sketch: Sketch): Promise<string> {
    const sketchPath = FileUri.fsPath(sketch.uri);
    await fs.promises.readdir(sketchPath); // Validates the sketch folder and rejects if not accessible.
    const suffix = crypto.createHash('md5').update(sketchPath).digest('hex');
    return path.join(os.tmpdir(), `arduino-ide2-${suffix}`);
  }
}

interface SketchWithDetails extends Sketch {
  readonly mtimeMs: number;
}

/**
 * If on Windows, will change the input `C:\\path\\to\\somewhere` to `c:\\path\\to\\somewhere`.
 */
function maybeNormalizeDrive(input: string): string {
  if (isWindows && WIN32_DRIVE_REGEXP.test(input)) {
    return firstToLowerCase(input);
  }
  return input;
}

/*
 * When a new sketch is created, add a suffix to distinguish it
 * from other new sketches I created today.
 * If 'sketch_jul8a' is already used, go with 'sketch_jul8b'.
 * If 'sketch_jul8b' already used, go with 'sketch_jul8c'.
 * When it reach 'sketch_jul8z', go with 'sketch_jul8aa',
 * and so on.
 */
function sketchIndexToLetters(num: number): string {
  let out = '';
  let pow;
  do {
    pow = Math.floor(num / 26);
    const mod = num % 26;
    out = (mod ? String.fromCharCode(96 + mod) : (--pow, 'z')) + out;
    num = pow;
  } while (pow > 0);
  return out;
}