name: Main workflow
on:
  push:
    paths-ignore:
      - "docs/**"
      - "**.md"
  pull_request:
    paths-ignore:
      - "docs/**"
      - "**.md"

jobs:
  # Run the `rustfmt` code formatter
  rustfmt:
    name: Rustfmt [Formatter]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          components: rustfmt
          override: true
      - run: rustup component add rustfmt
      - uses: actions-rs/cargo@v1
        with:
          command: fmt
          args: --all -- --check

  # Run the `clippy` linting tool
  clippy:
    name: Clippy [Linter]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          components: clippy
          override: true
      - uses: actions-rs/clippy-check@v1
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          args: --all-targets --all-features -- -D clippy::all

  # Run a security audit on dependencies
  cargo_audit:
    name: Cargo Audit [Security]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          override: true
      - run: cargo install --force cargo-audit
      - run: cargo generate-lockfile
      - uses: actions-rs/cargo@v1
        with:
          command: audit

  # Ensure that the project could be successfully compiled
  cargo_check:
    name: Compile
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          override: true
      - uses: actions-rs/cargo@v1
        with:
          command: check
          args: --all

  # Run tests on Linux, macOS, and Windows
  # On both Rust stable and Rust nightly
  test:
    name: Test Suite
    needs: [cargo_check]
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macOS-latest, windows-latest]
        rust: [stable, nightly]
    steps:
      # Checkout the branch being tested
      - uses: actions/checkout@v2

      # Cache files between builds
      - name: Cache cargo registry
        uses: actions/cache@v1
        with:
          path: ~/.cargo/registry
          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
      - name: Cache cargo index
        uses: actions/cache@v1
        with:
          path: ~/.cargo/git
          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
      - name: Cache cargo build
        uses: actions/cache@v1
        with:
          path: target
          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}

      # Install all the required dependencies for testing
      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          override: true

      # Install Stack at a fixed version (Linux & macOS version)
      - name: Install Stack [-nix]
        if: matrix.os != 'windows-latest'
        uses: mstksg/setup-stack@v1

      # Install Stack at a fixed version (Windows version), use Chocolatey
      - name: Install Stack [-windows]
        if: matrix.os == 'windows-latest'
        uses: crazy-max/ghaction-chocolatey@v1
        with:
          args: install haskell-stack -y

      - name: Install GHC version
        env:
          ARGS: --resolver nightly-2019-09-21
        run: stack $ARGS ghc -- --numeric-version --no-install-ghc

      # Install Golang at a fixed version
      - uses: actions/setup-go@v1
        with:
          go-version: "1.12.1"

      # Install Ruby at a fixed version
      - uses: eregon/use-ruby-action@v1
        with:
          ruby-version: "2.6.3"

      # Install Python at a fixed version
      - uses: actions/setup-python@v1
        with:
          python-version: "3.7.6"

      # Install dotnet at a fixed version
      - uses: actions/setup-dotnet@v1
        with:
          dotnet-version: "2.2.402"

      # Install PHP at a fixed version
      - uses: shivammathur/setup-php@v1
        with:
          php-version: "7.3"

      # Install Mercurial (pre-installed on Linux and windows)
      - name: Install Mercurial (macos)
        if: matrix.os == 'macOS-latest'
        env:
          HGPYTHON3: 1
        run: pip install mercurial

      # Install Terraform at a fixed version
      - uses: volcano-coffee-company/setup-terraform@v1
        with:
          version: "0.12.14"

      # Run the ignored tests that expect the above setup
      - name: Run all tests
        uses: actions-rs/cargo@v1
        with:
          command: test
          args: -- -Z unstable-options --include-ignored

  # Publish starship to Crates.io
  cargo_publish:
    if: startsWith(github.ref, 'refs/tags/v')
    name: Publish Cargo Package
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          override: true
      - run: cargo login $CRATES_IO_TOKEN
      - run: cargo publish
    env:
      CRATES_IO_TOKEN: ${{ secrets.CRATES_IO_TOKEN }}

  update_brew_formula:
    if: startsWith(github.ref, 'refs/tags/v')
    name: Update Brew Formula
    runs-on: macos-latest
    steps:
      - uses: actions/checkout@v2
      - run: |
          echo "https://matchai:$HOMEBREW_GITHUB_API_TOKEN@github.com" > ~/.git-credentials
          git config --global credential.helper store
          git config --global user.name "Matan Kushner"
          git config --global user.email "hello@matchai.dev"

          cd $(brew --repo homebrew/core)	
          git fetch origin
          sudo git reset --hard origin/master	
          cd -

          brew bump-formula-pr --url=https://github.com/starship/starship/archive/$(git describe --tags).tar.gz --message="Automated release pull request using continuous integration." --no-browse -v starship --force
        env:
          HOMEBREW_GITHUB_API_TOKEN: ${{ secrets.HOMEBREW_GITHUB_API_TOKEN }}

  # Build sources for every OS
  github_build:
    if: startsWith(github.ref, 'refs/tags/v')
    name: Build release binaries
    strategy:
      fail-fast: false
      matrix:
        target:
          - x86_64-unknown-linux-gnu
          - x86_64-unknown-linux-musl
          - x86_64-apple-darwin
          - x86_64-pc-windows-msvc
        include:
          - target: x86_64-unknown-linux-gnu
            os: ubuntu-latest
            name: starship-x86_64-unknown-linux-gnu.tar.gz
          - target: x86_64-unknown-linux-musl
            os: ubuntu-latest
            name: starship-x86_64-unknown-linux-musl.tar.gz
          - target: x86_64-apple-darwin
            os: macOS-latest
            name: starship-x86_64-apple-darwin.tar.gz
          - target: x86_64-pc-windows-msvc
            os: windows-latest
            name: starship-x86_64-pc-windows-msvc.zip
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v2

      - name: Install Rust toolchain
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          override: true
          target: ${{ matrix.target }}

      - name: Install musl tools
        if: matrix.target == 'x86_64-unknown-linux-musl'
        run: sudo apt-get install -y musl-tools

      - name: Build target
        uses: actions-rs/cargo@v1
        with:
          command: build
          args: --release --target ${{ matrix.target }}

      - name: Prepare build artifacts [Windows]
        if: matrix.os == 'windows-latest'
        run: |
          cd target/${{ matrix.target }}/release
          strip starship.exe
          7z a ../../../${{ matrix.name }} starship.exe
          cd -

      - name: Prepare build artifacts [-nix]
        if: matrix.os != 'windows-latest'
        run: |
          cd target/${{ matrix.target }}/release
          strip starship
          tar czvf ../../../${{ matrix.name }} starship
          cd -

      - name: Upload build artifact
        uses: actions/upload-artifact@v1
        with:
          name: ${{ matrix.name }}
          path: ${{ matrix.name }}

  # Create GitHub release with Rust build targets and release notes
  github_release:
    if: startsWith(github.ref, 'refs/tags/v')
    name: Create GitHub Release
    needs: github_build
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      # These can be squashed when https://github.com/actions/download-artifact/issues/6 is closed
      - name: Download releases from github_build
        uses: actions/download-artifact@v1
        with:
          name: starship-x86_64-unknown-linux-gnu.tar.gz
          path: .
      - name: Download releases from github_build
        uses: actions/download-artifact@v1
        with:
          name: starship-x86_64-unknown-linux-musl.tar.gz
          path: .
      - name: Download releases from github_build
        uses: actions/download-artifact@v1
        with:
          name: starship-x86_64-apple-darwin.tar.gz
          path: .
      - name: Download releases from github_build
        uses: actions/download-artifact@v1
        with:
          name: starship-x86_64-pc-windows-msvc.zip
          path: .

      - name: Generate checksums
        run: for file in starship-*; do openssl dgst -sha256 -r "$file" | awk '{print $1}' > "${file}.sha256"; done

      - name: Generate release notes
        run: |
          # Temporary fix for https://github.com/actions/setup-go/issues/14
          export PATH=$PATH:$(go env GOPATH)/bin
          go get -u github.com/git-chglog/git-chglog/cmd/git-chglog
          git-chglog -c .github/chglog/release.yml $(git describe --tags) > RELEASE.md

      - name: Create GitHub release ${{ matrix.target }}
        uses: softprops/action-gh-release@v1
        with:
          files: |
            starship-x86_64-unknown-linux-gnu.tar.gz
            starship-x86_64-unknown-linux-gnu.tar.gz.sha256
            starship-x86_64-unknown-linux-musl.tar.gz
            starship-x86_64-unknown-linux-musl.tar.gz.sha256
            starship-x86_64-apple-darwin.tar.gz
            starship-x86_64-apple-darwin.tar.gz.sha256
            starship-x86_64-pc-windows-msvc.zip
            starship-x86_64-pc-windows-msvc.zip.sha256
          body_path: RELEASE.md
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}