fix: install tauri-cli using cargo (#242)

* fix: install tauri-cli using cargo

Signed-off-by: Soorya U <sooryau7@gmail.com>

* chore: better error message and updated function name

* change file

---------

Signed-off-by: Soorya U <sooryau7@gmail.com>

Author: soorya-u

.changes/cargo-tauri-cli.md

@@ -0,0 +1,5 @@
+---
+"tauri-vscode": patch
+---
+
+Install `cargo tauri` if not installed. 

src/extension.ts

@@ -160,7 +160,7 @@ function runTauriInit(): void {
       let onInstall = () => {};
       if (__isVueCliApp(projectPath)) {
         installCommand = 'vue add tauri';
-      } else {
+      } else if (__isNodeProject(projectPath)) {
         installCommand = __usePnpm(projectPath)
           ? 'pnpm add -D @tauri-apps/cli'
           : __useYarn(projectPath)
@@ -185,6 +185,8 @@ function runTauriInit(): void {
             noOutputWindow: true,
           });
         };
+      } else {
+        installCommand = 'cargo install tauri-cli';
       }
 
       const [command, ...args] = installCommand.split(' ');
@@ -196,7 +198,7 @@ function runTauriInit(): void {
     () => {
       const paths = __getNpmProjectsPaths();
       return paths.filter((p) => {
-        return !fs.existsSync(path.join(p, 'src-tauri'));
+        return fs.existsSync(path.join(p, 'src-tauri'));
       });
     }
   );
@@ -225,6 +227,10 @@ function __isVueCliApp(cwd: string): boolean {
   return '@vue/cli-service' in (packageJson?.devDependencies ?? {});
 }
 
+function __isNodeProject(cwd: string): boolean {
+  return existsSync(join(cwd, 'package.json'));
+}
+
 interface PackageJson {
   dependencies: {
     [name: string]: any;
@@ -418,7 +424,7 @@ function __getPackageManagerCommand(projectPath: string): string | null {
 
   if (!m) {
     vscode.window.showErrorMessage(
-      "Couldn't detect package manager for current project."
+      "Couldn't detect package manager for current project. Try running Tauri: Init Command"
     );
   }