name: CI checks

on: [push, pull_request]

jobs:
  test:
    name: Test on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macOS-latest]

    steps:
      - uses: actions/checkout@v3
      - name: Fetch path to Zcash parameters
        working-directory: ./zcash_proofs
        shell: bash
        run: echo "ZCASH_PARAMS=$(cargo run --release --example get-params-path --features directories)" >> $GITHUB_ENV
      - name: Cache Zcash parameters
        id: cache-params
        uses: actions/cache@v3.3.1
        with:
          path: ${{ env.ZCASH_PARAMS }}
          key: ${{ runner.os }}-params
      - name: Fetch Zcash parameters
        if: steps.cache-params.outputs.cache-hit != 'true'
        working-directory: ./zcash_proofs
        run: cargo run --release --example download-params --features download-params

      - name: Run tests
        run: cargo test  --all-features --verbose --release --all
      - name: Run slow tests
        run: cargo test --all-features --verbose --release --all -- --ignored
      - name: Verify working directory is clean
        run: git diff --exit-code

  build:
    name: Build target ${{ matrix.target }}
    runs-on: ubuntu-latest
    strategy:
      matrix:
        target:
          - wasm32-wasi

    steps:
      - uses: actions/checkout@v3
      - name: Add target
        run: rustup target add ${{ matrix.target }}
      - run: cargo fetch
      - name: Build zcash_proofs for target
        working-directory: ./zcash_proofs
        run: cargo build --verbose --no-default-features --target ${{ matrix.target }}
      - name: Build zcash_client_backend for target
        working-directory: ./zcash_client_backend
        run: cargo build --verbose --no-default-features --target ${{ matrix.target }}

  bitrot:
    name: Bitrot check
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      # Build benchmarks to prevent bitrot
      - name: Build benchmarks
        run: cargo build --all --benches

  clippy:
    name: Clippy (MSRV)
    timeout-minutes: 30
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Run clippy
        uses: actions-rs/clippy-check@v1
        with:
          name: Clippy (MSRV)
          token: ${{ secrets.GITHUB_TOKEN }}
          args: --all-features --all-targets -- -D warnings

  clippy-beta:
    name: Clippy (beta)
    timeout-minutes: 30
    runs-on: ubuntu-latest
    continue-on-error: true
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@beta
        id: toolchain
      - run: rustup override set ${{steps.toolchain.outputs.name}}
      - name: Run Clippy (beta)
        uses: actions-rs/clippy-check@v1
        continue-on-error: true
        with:
          name: Clippy (beta)
          token: ${{ secrets.GITHUB_TOKEN }}
          args: --all-features --all-targets -- -W clippy::all

  codecov:
    name: Code coverage
    runs-on: ubuntu-latest
    container:
      image: xd009642/tarpaulin:develop-nightly
      options: --security-opt seccomp=unconfined

    steps:
      - uses: actions/checkout@v3
      - name: Fetch path to Zcash parameters
        working-directory: ./zcash_proofs
        shell: bash
        run: echo "ZCASH_PARAMS=$(cargo run --release --example get-params-path --features directories)" >> $GITHUB_ENV
      - name: Cache Zcash parameters
        id: cache-params
        uses: actions/cache@v3.3.1
        with:
          path: ${{ env.ZCASH_PARAMS }}
          key: ${{ runner.os }}-params
      - name: Fetch Zcash parameters
        if: steps.cache-params.outputs.cache-hit != 'true'
        working-directory: ./zcash_proofs
        run: cargo run --release --example download-params --features download-params

      - name: Generate coverage report
        run: cargo tarpaulin --engine llvm --all-features --release --timeout 600 --out Xml
      - name: Upload coverage to Codecov
        uses: codecov/codecov-action@v3.1.3

  doc-links:
    name: Intra-doc links
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - run: cargo fetch
      # Requires #![deny(rustdoc::broken_intra_doc_links)] in crates.
      - name: Check intra-doc links
        run: cargo doc --all --document-private-items

  fmt:
    name: Rustfmt
    timeout-minutes: 30
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Check formatting
        run: cargo fmt --all -- --check