name: CICD

env:
  CICD_INTERMEDIATES_DIR: "_cicd-intermediates"
  MSRV_FEATURES: ""

on:
  workflow_dispatch:
  pull_request:
  push:
    branches:
      - master
    tags:
      - '*'

jobs:
  crate_metadata:
    name: Extract crate metadata
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v6
    - name: Extract crate information
      id: crate_metadata
      run: |
        cargo metadata --no-deps --format-version 1 | jq -r '"name=" + .packages[0].name' | tee -a $GITHUB_OUTPUT
        cargo metadata --no-deps --format-version 1 | jq -r '"version=" + .packages[0].version' | tee -a $GITHUB_OUTPUT
        cargo metadata --no-deps --format-version 1 | jq -r '"maintainer=" + .packages[0].authors[0]' | tee -a $GITHUB_OUTPUT
        cargo metadata --no-deps --format-version 1 | jq -r '"homepage=" + .packages[0].homepage' | tee -a $GITHUB_OUTPUT
        cargo metadata --no-deps --format-version 1 | jq -r '"msrv=" + .packages[0].rust_version' | tee -a $GITHUB_OUTPUT
    outputs:
      name: ${{ steps.crate_metadata.outputs.name }}
      version: ${{ steps.crate_metadata.outputs.version }}
      maintainer: ${{ steps.crate_metadata.outputs.maintainer }}
      homepage: ${{ steps.crate_metadata.outputs.homepage }}
      msrv: ${{ steps.crate_metadata.outputs.msrv }}

  ensure_cargo_fmt:
    name: Ensure 'cargo fmt' has been run
    runs-on: ubuntu-latest
    steps:
    - uses: dtolnay/rust-toolchain@stable
      with:
        components: rustfmt
    - uses: actions/checkout@v6
    - run: cargo fmt -- --check

  min_version:
    name: Minimum supported rust version
    runs-on: ubuntu-latest
    needs: crate_metadata
    steps:
    - name: Checkout source code
      uses: actions/checkout@v6

    - name: Install rust toolchain (v${{ needs.crate_metadata.outputs.msrv }})
      uses: dtolnay/rust-toolchain@master
      with:
        toolchain: ${{ needs.crate_metadata.outputs.msrv }}
        components: clippy
    - name: Run clippy (on minimum supported rust version to prevent warnings we can't fix)
      run: cargo clippy --locked --all-targets ${{ env.MSRV_FEATURES }}
    - name: Run tests
      run: cargo test --locked ${{ env.MSRV_FEATURES }}

  build:
    name: ${{ matrix.job.target }} (${{ matrix.job.os }})
    runs-on: ${{ matrix.job.os }}
    needs: crate_metadata
    strategy:
      fail-fast: false
      matrix:
        job:
          - { target: aarch64-apple-darwin        , os: macos-latest                   }
          - { target: aarch64-unknown-linux-gnu   , os: ubuntu-latest, use-cross: true }
          - { target: arm-unknown-linux-gnueabihf , os: ubuntu-latest, use-cross: true }
          - { target: arm-unknown-linux-musleabihf, os: ubuntu-latest, use-cross: true }
          - { target: i686-pc-windows-msvc        , os: windows-latest                 }
          - { target: i686-unknown-linux-gnu      , os: ubuntu-latest, use-cross: true }
          - { target: i686-unknown-linux-musl     , os: ubuntu-latest, use-cross: true }
          - { target: x86_64-apple-darwin         , os: macos-latest                   }
          - { target: x86_64-pc-windows-gnu       , os: windows-latest                 }
          - { target: x86_64-pc-windows-msvc      , os: windows-latest                 }
          - { target: x86_64-unknown-linux-gnu    , os: ubuntu-latest, use-cross: true }
          - { target: x86_64-unknown-linux-musl   , os: ubuntu-latest, use-cross: true }
    env:
      BUILD_CMD: cargo
    steps:
    - name: Checkout source code
      uses: actions/checkout@v6

    - name: Install prerequisites
      shell: bash
      run: |
        case ${{ matrix.job.target }} in
          arm-unknown-linux-*) sudo apt-get -y update ; sudo apt-get -y install gcc-arm-linux-gnueabihf ;;
          aarch64-unknown-linux-gnu) sudo apt-get -y update ; sudo apt-get -y install gcc-aarch64-linux-gnu ;;
        esac

    - name: Install Rust toolchain
      uses: dtolnay/rust-toolchain@stable
      with:
        targets: ${{ matrix.job.target }}

    - name: Install cross
      if: matrix.job.use-cross
      uses: taiki-e/install-action@v2
      with:
        tool: cross

    - name: Overwrite build command env variable
      if: matrix.job.use-cross
      shell: bash
      run: echo "BUILD_CMD=cross" >> $GITHUB_ENV

    - name: Show version information (Rust, cargo, GCC)
      shell: bash
      run: |
        gcc --version || true
        rustup -V
        rustup toolchain list
        rustup default
        cargo -V
        rustc -V

    - name: Build
      shell: bash
      run: $BUILD_CMD build --locked --release --target=${{ matrix.job.target }}

    - name: Set binary name & path
      id: bin
      shell: bash
      run: |
        # Figure out suffix of binary
        EXE_suffix=""
        case ${{ matrix.job.target }} in
          *-pc-windows-*) EXE_suffix=".exe" ;;
        esac;

        # Setup paths
        BIN_NAME="${{ needs.crate_metadata.outputs.name }}${EXE_suffix}"
        BIN_PATH="target/${{ matrix.job.target }}/release/${BIN_NAME}"

        # Let subsequent steps know where to find the binary
        echo "BIN_PATH=${BIN_PATH}" >> $GITHUB_OUTPUT
        echo "BIN_NAME=${BIN_NAME}" >> $GITHUB_OUTPUT

    - name: Set testing options
      id: test-options
      shell: bash
      run: |
        # test only library unit tests and binary for arm-type targets
        unset CARGO_TEST_OPTIONS
        unset CARGO_TEST_OPTIONS ; case ${{ matrix.job.target }} in arm-* | aarch64-*) CARGO_TEST_OPTIONS="--bin ${{ needs.crate_metadata.outputs.name }}" ;; esac;
        echo "CARGO_TEST_OPTIONS=${CARGO_TEST_OPTIONS}" >> $GITHUB_OUTPUT

    - name: Run tests
      shell: bash
      run: $BUILD_CMD test --locked --target=${{ matrix.job.target }} ${{ steps.test-options.outputs.CARGO_TEST_OPTIONS}}

    - name: Create tarball
      id: package
      shell: bash
      run: |
        PKG_suffix=".tar.gz" ; case ${{ matrix.job.target }} in *-pc-windows-*) PKG_suffix=".zip" ;; esac;
        PKG_BASENAME=${{ needs.crate_metadata.outputs.name }}-v${{ needs.crate_metadata.outputs.version }}-${{ matrix.job.target }}
        PKG_NAME=${PKG_BASENAME}${PKG_suffix}
        echo "PKG_NAME=${PKG_NAME}" >> $GITHUB_OUTPUT

        PKG_STAGING="${{ env.CICD_INTERMEDIATES_DIR }}/package"
        ARCHIVE_DIR="${PKG_STAGING}/${PKG_BASENAME}/"
        mkdir -p "${ARCHIVE_DIR}"
        mkdir -p "${ARCHIVE_DIR}/autocomplete"
        mkdir -p "${ARCHIVE_DIR}/man"

        # Binary
        cp "${{ steps.bin.outputs.BIN_PATH }}" "$ARCHIVE_DIR"

        # README, LICENSE and CHANGELOG files
        cp "README.md" "LICENSE-MIT" "LICENSE-APACHE" "CHANGELOG.md" "$ARCHIVE_DIR"

        # Man pages
        cp 'target/${{ matrix.job.target }}/release/build/${{ needs.crate_metadata.outputs.name }}'*/out/*.1 "$ARCHIVE_DIR/man/"

        # Autocompletion files
        cp 'target/${{ matrix.job.target }}/release/build/${{ needs.crate_metadata.outputs.name }}'*/out/'${{ needs.crate_metadata.outputs.name }}.bash' "$ARCHIVE_DIR/autocomplete/"
        cp 'target/${{ matrix.job.target }}/release/build/${{ needs.crate_metadata.outputs.name }}'*/out/_'${{ needs.crate_metadata.outputs.name }}' "$ARCHIVE_DIR/autocomplete/"
        cp 'target/${{ matrix.job.target }}/release/build/${{ needs.crate_metadata.outputs.name }}'*/out/'${{ needs.crate_metadata.outputs.name }}.fish' "$ARCHIVE_DIR/autocomplete/"
        cp 'target/${{ matrix.job.target }}/release/build/${{ needs.crate_metadata.outputs.name }}'*/out/'_${{ needs.crate_metadata.outputs.name }}.ps1' "$ARCHIVE_DIR/autocomplete/"

        # base compressed package
        pushd "${PKG_STAGING}/" >/dev/null
        case ${{ matrix.job.target }} in
          *-pc-windows-*) 7z -y a "${PKG_NAME}" "${PKG_BASENAME}"/* | tail -2 ;;
          *) tar czf "${PKG_NAME}" "${PKG_BASENAME}"/* ;;
        esac;
        popd >/dev/null

        # Let subsequent steps know where to find the compressed package
        echo "PKG_PATH=${PKG_STAGING}/${PKG_NAME}" >> $GITHUB_OUTPUT

    - name: Create Debian package
      id: debian-package
      shell: bash
      if: startsWith(matrix.job.os, 'ubuntu')
      run: |
        COPYRIGHT_YEARS="2018 - "$(date "+%Y")
        DPKG_STAGING="${{ env.CICD_INTERMEDIATES_DIR }}/debian-package"
        DPKG_DIR="${DPKG_STAGING}/dpkg"
        mkdir -p "${DPKG_DIR}"

        DPKG_BASENAME=${{ needs.crate_metadata.outputs.name }}
        DPKG_CONFLICTS=${{ needs.crate_metadata.outputs.name }}-musl
        case ${{ matrix.job.target }} in *-musl*) DPKG_BASENAME=${{ needs.crate_metadata.outputs.name }}-musl ; DPKG_CONFLICTS=${{ needs.crate_metadata.outputs.name }} ;; esac;
        DPKG_VERSION=${{ needs.crate_metadata.outputs.version }}

        unset DPKG_ARCH
        case ${{ matrix.job.target }} in
          aarch64-*-linux-*) DPKG_ARCH=arm64 ;;
          arm-*-linux-*hf) DPKG_ARCH=armhf ;;
          i686-*-linux-*) DPKG_ARCH=i686 ;;
          x86_64-*-linux-*) DPKG_ARCH=amd64 ;;
          *) DPKG_ARCH=notset ;;
        esac;

        DPKG_NAME="${DPKG_BASENAME}_${DPKG_VERSION}_${DPKG_ARCH}.deb"
        echo "DPKG_NAME=${DPKG_NAME}" >> $GITHUB_OUTPUT

        # Binary
        install -Dm755 "${{ steps.bin.outputs.BIN_PATH }}" "${DPKG_DIR}/usr/bin/${{ steps.bin.outputs.BIN_NAME }}"

        # Man pages
        for manpage in 'target/${{ matrix.job.target }}/release/build/${{ needs.crate_metadata.outputs.name }}'*/out/*.1; do
          manpage_name=$(basename "$manpage")
          install -Dm644 "$manpage" "${DPKG_DIR}/usr/share/man/man1/${manpage_name}"
          gzip -n --best "${DPKG_DIR}/usr/share/man/man1/${manpage_name}"
        done

        # Autocompletion files
        install -Dm644 'target/${{ matrix.job.target }}/release/build/${{ needs.crate_metadata.outputs.name }}'*/out/'${{ needs.crate_metadata.outputs.name }}.bash' "${DPKG_DIR}/usr/share/bash-completion/completions/${{ needs.crate_metadata.outputs.name }}"
        install -Dm644 'target/${{ matrix.job.target }}/release/build/${{ needs.crate_metadata.outputs.name }}'*/out/_'${{ needs.crate_metadata.outputs.name }}' "${DPKG_DIR}/usr/share/zsh/vendor-completions/_${{ needs.crate_metadata.outputs.name }}"
        install -Dm644 'target/${{ matrix.job.target }}/release/build/${{ needs.crate_metadata.outputs.name }}'*/out/'${{ needs.crate_metadata.outputs.name }}.fish' "${DPKG_DIR}/usr/share/fish/vendor_completions.d/${{ needs.crate_metadata.outputs.name }}.fish"

        # README and LICENSE
        install -Dm644 "README.md" "${DPKG_DIR}/usr/share/doc/${DPKG_BASENAME}/README.md"
        install -Dm644 "LICENSE-MIT" "${DPKG_DIR}/usr/share/doc/${DPKG_BASENAME}/LICENSE-MIT"
        install -Dm644 "LICENSE-APACHE" "${DPKG_DIR}/usr/share/doc/${DPKG_BASENAME}/LICENSE-APACHE"
        install -Dm644 "CHANGELOG.md" "${DPKG_DIR}/usr/share/doc/${DPKG_BASENAME}/changelog"
        gzip -n --best "${DPKG_DIR}/usr/share/doc/${DPKG_BASENAME}/changelog"

        cat > "${DPKG_DIR}/usr/share/doc/${DPKG_BASENAME}/copyright" <<EOF
        Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
        Upstream-Name: ${{ needs.crate_metadata.outputs.name }}
        Source: ${{ needs.crate_metadata.outputs.homepage }}

        Files: *
        Copyright: ${{ needs.crate_metadata.outputs.maintainer }}
        Copyright: $COPYRIGHT_YEARS ${{ needs.crate_metadata.outputs.maintainer }}
        License: Apache-2.0 or MIT

        License: Apache-2.0
          On Debian systems, the complete text of the Apache-2.0 can be found in the
          file /usr/share/common-licenses/Apache-2.0.

        License: MIT
          Permission is hereby granted, free of charge, to any
          person obtaining a copy of this software and associated
          documentation files (the "Software"), to deal in the
          Software without restriction, including without
          limitation the rights to use, copy, modify, merge,
          publish, distribute, sublicense, and/or sell copies of
          the Software, and to permit persons to whom the Software
          is furnished to do so, subject to the following
          conditions:
          .
          The above copyright notice and this permission notice
          shall be included in all copies or substantial portions
          of the Software.
          .
          THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
          ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
          TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
          PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
          SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
          CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
          OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
          IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
          DEALINGS IN THE SOFTWARE.
        EOF
          chmod 644 "${DPKG_DIR}/usr/share/doc/${DPKG_BASENAME}/copyright"

          # control file
          mkdir -p "${DPKG_DIR}/DEBIAN"
          cat > "${DPKG_DIR}/DEBIAN/control" <<EOF
        Package: ${DPKG_BASENAME}
        Version: ${DPKG_VERSION}
        Section: utils
        Priority: optional
        Maintainer: ${{ needs.crate_metadata.outputs.maintainer }}
        Homepage: ${{ needs.crate_metadata.outputs.homepage }}
        Architecture: ${DPKG_ARCH}
        Provides: ${{ needs.crate_metadata.outputs.name }}
        Conflicts: ${DPKG_CONFLICTS}
        Description: command-line tool to generate, analyze, convert and manipulate colors
        EOF

        DPKG_PATH="${DPKG_STAGING}/${DPKG_NAME}"
        echo "DPKG_PATH=${DPKG_PATH}" >> $GITHUB_OUTPUT

        # build dpkg
        fakeroot dpkg-deb --build "${DPKG_DIR}" "${DPKG_PATH}"

    - name: "Artifact upload: tarball"
      uses: actions/upload-artifact@v7
      with:
        name: ${{ steps.package.outputs.PKG_NAME }}
        path: ${{ steps.package.outputs.PKG_PATH }}

    - name: "Artifact upload: Debian package"
      uses: actions/upload-artifact@v7
      if: steps.debian-package.outputs.DPKG_NAME
      with:
        name: ${{ steps.debian-package.outputs.DPKG_NAME }}
        path: ${{ steps.debian-package.outputs.DPKG_PATH }}

    - name: Check for release
      id: is-release
      shell: bash
      run: |
        unset IS_RELEASE ; if [[ $GITHUB_REF =~ ^refs/tags/v[0-9].* ]]; then IS_RELEASE='true' ; fi
        echo "IS_RELEASE=${IS_RELEASE}" >> $GITHUB_OUTPUT

    - name: Publish archives and packages
      uses: softprops/action-gh-release@v2
      if: steps.is-release.outputs.IS_RELEASE
      with:
        files: |
          ${{ steps.package.outputs.PKG_PATH }}
          ${{ steps.debian-package.outputs.DPKG_PATH }}
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  winget:
    name: Publish to Winget
    runs-on: ubuntu-latest
    needs: build
    if: startsWith(github.ref, 'refs/tags/v')
    steps:
      - uses: vedantmgoyal2009/winget-releaser@v2
        with:
          identifier: sharkdp.pastel
          installers-regex: '-pc-windows-msvc\.zip$'
          token: ${{ secrets.WINGET_TOKEN }}
