Set up CI for backend

.github/workflows/backend-checks.yml

@@ -0,0 +1,51 @@
+name: Check backend
+
+on:
+  push:
+    paths:
+      - ".github/workflows/backend-checks.yml"
+      - "src-tauri/**"
+  pull_request:
+    paths:
+      - ".github/workflows/backend-checks.yml"
+      - "src-tauri/**"
+
+concurrency:
+  group: ${{ github.ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
+jobs:
+  clippy:
+    runs-on: ${{ matrix.platform }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [windows-latest, ubuntu-latest, macos-latest]
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Install Linux dependencies
+        if: matrix.platform == 'ubuntu-latest'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libwebkit2gtk-4.0-dev \
+            build-essential \
+            curl \
+            wget \
+            libssl-dev \
+            libgtk-3-dev \
+            libayatana-appindicator3-dev \
+            librsvg2-dev
+
+      - uses: Swatinem/rust-cache@v1
+        with:
+          working-directory: src-tauri
+
+      - uses: actions-rs/clippy-check@v1
+        with:
+          name: clippy (${{ runner.os }})
+          token: ${{ secrets.GITHUB_TOKEN }}
+          args: --manifest-path ./src-tauri/Cargo.toml --no-default-features -- -D warnings
+

src-tauri/src/file_helpers.rs

@@ -36,7 +36,7 @@ pub fn dir_delete(path: &str) {
 
 #[tauri::command]
 pub fn copy_file(path: String, new_path: String) -> bool {
-  let filename = &path.split("/").last().unwrap();
+  let filename = &path.split('/').last().unwrap();
   let mut new_path_buf = std::path::PathBuf::from(&new_path);
 
   // If the new path doesn't exist, create it.