feat(Application Search): Linux Support (#1078)

* Added support for Linux in Application Search

* Commit to restart pull request

* Added support for Linux in Application Search

* Commit to restart pull request

* App search functional in dev build

* Added Linux support

* Fix formatting

* Fixed conflict and combined Linux icon generators

* Addressed code review feedback

* Moved GtkLaunchActionHandler to extension folder

* Added test

* Fixed typecheck issue

* Moved createGtkLaunchAction to extension folder

* Removed duplicated functions

* Fixed race conditions in Linux Icon extractor

* Refactor Linux app search to use native filesystem

* Forgot to stage files for previous commit

* Use more accurate class name

* Use EnvironmentVariableProvider

* Moved LinuxAppIconExtractor into Linux folder

* fix: prettier formatting

* Changed GtkLaunch to LaunchDesktopFile

* Use more accurate property name

* Only export needed files

* Use more accurate property name

* Added @ke1v as code owner of linux part of ApplicationSearch extension

* Use more accurate property name

* Import type only

* Simplified code

* Added line breaks for better readabiltiy

* Only invoke operating system specific code when needed

* Added support for x-cinnamon desktop environment

* Simplified code

---------

Co-authored-by: Oliver Schwendener <oliver.schwendener@hotmail.com>
Co-authored-by: Oliver Schwendener <oliver.schwendener@proton.me>

.github/CODEOWNERS

@@ -25,8 +25,6 @@ src/main/Core/IniFileParser @ke1v
 
 # Extensions
 
-# [EXAMPLE] ApplicationSearch
-assets/Extensions/ApplicationSearch @oliverschwendener
-src/common/Extensions/ApplicationSearch @oliverschwendener
-src/main/Extensions/ApplicationSearch @oliverschwendener
-src/renderer/Extensions/ApplicationSearch @oliverschwendener
+# ApplicationSearch
+src/main/Extensions/ApplicationSearch/Linux @ke1v
+src/renderer/Extensions/ApplicationSearch/Linux @ke1v

assets/Extensions/ApplicationSearch/LICENSE

@@ -0,0 +1,3 @@
+"linux-applications.png" and "linux-generic-app-icon.png" by GNOME Project
+(http://www.gnome.org) is licensed under CC BY-SA 3.0
+(https://creativecommons.org/licenses/by-sa/3.0/)

src/main/Core/FileSystemUtility/Contract/FileSystemUtility.ts

@@ -8,6 +8,7 @@ export interface FileSystemUtility {
     readTextFile(filePath: string): Promise<string>;
     readJsonFile<T>(filePath: string): Promise<T>;
     readJsonFileSync<T>(filePath: string): T;
+    readDirectory(folderPath: string): Promise<string[]>;
     removeFile(filePath: string): Promise<void>;
     writeTextFile(data: string, filePath: string): Promise<void>;
     writeJsonFile<T>(data: T, filePath: string): Promise<void>;

src/main/Core/FileSystemUtility/NodeJsFileSystemUtility.ts

@@ -135,7 +135,7 @@ export class NodeJsFileSystemUtility implements FileSystemUtility {
         return (await this.readFile(filePath)).toString();
     }
 
-    private readDirectory(folderPath: string): Promise<string[]> {
+    public async readDirectory(folderPath: string): Promise<string[]> {
         return new Promise((resolve, reject) => {
             readdir(folderPath, (error, fileNames) => {
                 if (error) {

src/main/Core/ImageGenerator/ImageGeneratorModule.ts

@@ -6,6 +6,7 @@ import { CacheFileNameGenerator } from "./CacheFileNameGenerator";
 import type { FileIconExtractor } from "./FileIconExtractor";
 import { FileImageGenerator } from "./FileImageGenerator";
 import { GenericFileIconExtractor } from "./GenericFileIconExtractor";
+import { LinuxAppIconExtractor } from "./Linux";
 import { UrlImageGenerator } from "./UrlImageGenerator";
 import { WindowsApplicationIconExtractor, WindowsFolderIconExtractor } from "./Windows";
 import { MacOsApplicationIconExtractor, MacOsFolderIconExtractor } from "./macOS";
@@ -47,7 +48,18 @@ export class ImageGeneratorModule {
         // To prevent the execution of all icon extractor constructors, we use a function here that is only invoked
         // for the current operating system.
         const operatingSystemSpecificIconExtractors: Record<OperatingSystem, () => FileIconExtractor[]> = {
-            Linux: () => [],
+            Linux: () => [
+                new LinuxAppIconExtractor(
+                    dependencyRegistry.get("FileSystemUtility"),
+                    dependencyRegistry.get("CommandlineUtility"),
+                    dependencyRegistry.get("IniFileParser"),
+                    dependencyRegistry.get("Logger"),
+                    cacheFileNameGenerator,
+                    cacheFolderPath,
+                    dependencyRegistry.get("App").getPath("home"),
+                    dependencyRegistry.get("EnvironmentVariableProvider"),
+                ),
+            ],
             macOS: () => [
                 new MacOsFolderIconExtractor(
                     dependencyRegistry.get("AssetPathResolver"),