rust.yml

name: Rust

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

permissions:
  contents: read
  
env:
  CARGO_TERM_COLOR: always

jobs:
  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v4

    - name: Check for Rust projects
      id: check_rust
      run: |
        if [ -f "Cargo.toml" ] && ([ -f "src/main.rs" ] || [ -f "src/lib.rs" ]); then
          echo "has_rust=true" >> $GITHUB_OUTPUT
        else
          echo "has_rust=false" >> $GITHUB_OUTPUT
          echo "No valid Rust project (Cargo.toml + src/main.rs or src/lib.rs) found. Rust steps will be skipped."
          echo "### 🦀 Rust Build Skip" >> $GITHUB_STEP_SUMMARY
          echo "No valid Rust project found in the root directory. Rust build and test steps were skipped to prevent CI failure (Exit Code 101)." >> $GITHUB_STEP_SUMMARY
        fi

    - name: Build
      if: steps.check_rust.outputs.has_rust == 'true'
      run: cargo build --verbose

    - name: Run tests
      if: steps.check_rust.outputs.has_rust == 'true'
      run: cargo test --verbose