name: Rust

on:
  push:
    branches: [ main ]
  pull_request:
    types: [opened, reopened, synchronize]

env:
  CARGO_TERM_COLOR: always

jobs:
  pre_job:
    continue-on-error: true
    runs-on: ubuntu-latest
    # Map a step output to a job output
    outputs:
      should_skip: ${{ steps.skip_check.outputs.should_skip }}
    steps:
      - id: skip_check
        uses: fkirc/skip-duplicate-actions@master
        with:
          concurrent_skipping: 'never'
          skip_after_successful_duplicate: 'true'
          paths_ignore: '["**/*.md", "**/docs/**", "example_configs/**", "*.sh"]'
          do_not_skip: '["workflow_dispatch", "schedule"]'
  test:
    name: cargo test
    needs: pre_job
    if: ${{ needs.pre_job.outputs.should_skip != 'true' }}
    runs-on: ubuntu-latest

    steps:
      - name: Checkout sources
        uses: actions/checkout@v3
      - uses: Swatinem/rust-cache@v1
      - name: Build
        run: cargo build --verbose --workspace
      - name: Run tests
        run: cargo test --verbose --workspace
      - name: Generate GraphQL schema
        run: cargo run -- export_graphql_schema -o generated_schema.graphql
      - name: Check schema
        run: diff schema.graphql generated_schema.graphql || (echo "The schema file is out of date. Please run `./export_schema.sh`" && false)


  clippy:
    name: cargo clippy
    needs: pre_job
    if: ${{ needs.pre_job.outputs.should_skip != 'true' }}
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v3

      - name: Install nightly toolchain
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: nightly
          override: true
          components: rustfmt, clippy

      - uses: Swatinem/rust-cache@v1

      - name: Run cargo clippy
        uses: actions-rs/cargo@v1
        with:
          command: clippy
          args: --tests --all -- -D warnings

  format:
    name: cargo fmt
    needs: pre_job
    if: ${{ needs.pre_job.outputs.should_skip != 'true' }}
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v3

      - name: Install nightly toolchain
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: nightly
          override: true
          components: rustfmt, clippy

      - uses: Swatinem/rust-cache@v1

      - name: Run cargo fmt
        uses: actions-rs/cargo@v1
        with:
          command: fmt
          args: --all -- --check

  coverage:
    name: Code coverage
    needs: pre_job
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v3

      - name: Install Rust
        run: rustup toolchain install nightly --component llvm-tools-preview

      - name: Install cargo-llvm-cov
        run: curl -LsSf https://github.com/taiki-e/cargo-llvm-cov/releases/latest/download/cargo-llvm-cov-x86_64-unknown-linux-gnu.tar.gz | tar xzf - -C ~/.cargo/bin

      - uses: Swatinem/rust-cache@v1

      - name: clean
        run: cargo llvm-cov clean --workspace
      - name: Generate code coverage for unit test
        run: cargo llvm-cov  --workspace --no-report
      - name: Aggregate reports
        run: cargo llvm-cov --no-run --lcov --output-path lcov.info
      - name: Upload coverage to Codecov
        uses: codecov/codecov-action@v2.1.0
        with:
          files: lcov.info
          fail_ci_if_error: true