name: Release
on:
  push:
    tags:

env:
  # Preview mode: Publishes the build output as a CI artifact instead of creating
  # a release, allowing for manual inspection of the output. This mode is
  # activated if the CI run was triggered by events other than pushed tags, or
  # if the repository is a fork.
  preview: ${{ !startsWith(github.ref, 'refs/tags/')}}

jobs:
  fetch-grammars:
    name: Fetch Grammars
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v3

      - name: Install stable toolchain
        uses: helix-editor/rust-toolchain@v1
        with:
          profile: minimal
          override: true

      - uses: Swatinem/rust-cache@v2

      - name: Fetch tree-sitter grammars
        run: cargo run --package=helix-loader --bin=hx-loader

      - name: Bundle grammars
        run: tar cJf grammars.tar.xz -C runtime/grammars/sources .

      - uses: actions/upload-artifact@v3
        with:
          name: grammars
          path: grammars.tar.xz

  dist:
    name: Dist
    needs: [fetch-grammars]
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false # don't fail other jobs if one fails
      matrix:
        build: [x86_64-linux, x86_64-macos, x86_64-windows] #, x86_64-win-gnu, win32-msvc
        include:
        - build: x86_64-linux
          os: ubuntu-20.04
          rust: stable
          target: x86_64-unknown-linux-gnu
          cross: false
        - build: aarch64-linux
          os: ubuntu-20.04
          rust: stable
          target: aarch64-unknown-linux-gnu
          cross: true
        - build: riscv64-linux
          os: ubuntu-20.04
          rust: stable
          target: riscv64gc-unknown-linux-gnu
          cross: true
        - build: x86_64-macos
          os: macos-latest
          rust: stable
          target: x86_64-apple-darwin
          cross: false
        - build: x86_64-windows
          os: windows-2019
          rust: stable
          target: x86_64-pc-windows-msvc
          cross: false
        - build: aarch64-macos
          os: macos-latest
          rust: stable
          target: aarch64-apple-darwin
          cross: false
          skip_tests: true  # x86_64 host can't run aarch64 code

    steps:
      - name: Checkout sources
        uses: actions/checkout@v3

      - name: Download grammars
        uses: actions/download-artifact@v3

      - name: Move grammars under runtime
        if: "!startsWith(matrix.os, 'windows')"
        run: |
          mkdir -p runtime/grammars/sources
          tar xJf grammars/grammars.tar.xz -C runtime/grammars/sources

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

      # Install a pre-release version of Cross
      # TODO: We need to pre-install Cross because we need cross-rs/cross#591 to
      #       get a newer C++ compiler toolchain. Remove this step when Cross
      #       0.3.0, which includes cross-rs/cross#591, is released.
      - name: Install Cross
        if: "matrix.cross"
        run: cargo install cross --git https://github.com/cross-rs/cross.git --rev 47df5c76e7cba682823a0b6aa6d95c17b31ba63a

      - name: Set profile.release.strip = true
        shell: bash
        run: |
          cat >> .cargo/config.toml <<EOF
          [profile.release]
          strip = true
          EOF

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

      - name: Build AppImage
        shell: bash
        if: matrix.build == 'aarch64-linux' || matrix.build == 'x86_64-linux'
        run: |
          mkdir dist

          name=dev
          if [[ $GITHUB_REF == refs/tags/* ]]; then
            name=${GITHUB_REF:10}
          fi

          build="${{ matrix.build }}"

          export VERSION="$name"
          export ARCH=${build%-linux}
          export APP=helix
          export OUTPUT="helix-$VERSION-$ARCH.AppImage"
          export UPDATE_INFORMATION="gh-releases-zsync|$GITHUB_REPOSITORY_OWNER|helix|latest|$APP-*-$ARCH.AppImage.zsync"

          mkdir -p "$APP.AppDir"/usr/{bin,lib/helix}

          cp "target/${{ matrix.target }}/release/hx" "$APP.AppDir/usr/bin/hx"
          rm -rf runtime/grammars/sources
          cp -r runtime "$APP.AppDir/usr/lib/helix/runtime"

          cat << 'EOF' > "$APP.AppDir/AppRun"
          #!/bin/sh

          APPDIR="$(dirname "$(readlink -f "${0}")")"
          HELIX_RUNTIME="$APPDIR/usr/lib/helix/runtime" exec "$APPDIR/usr/bin/hx" "$@"
          EOF
          chmod 755 "$APP.AppDir/AppRun"

          curl -Lo linuxdeploy-x86_64.AppImage \
              https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage
          chmod +x linuxdeploy-x86_64.AppImage

          ./linuxdeploy-x86_64.AppImage \
              --appdir "$APP.AppDir" -d contrib/Helix.desktop \
              -i contrib/helix.png --output appimage

          mv "$APP-$VERSION-$ARCH.AppImage" \
              "$APP-$VERSION-$ARCH.AppImage.zsync" dist

      - name: Build archive
        shell: bash
        run: |
          mkdir -p dist
          if [ "${{ matrix.os }}" = "windows-2019" ]; then
            cp "target/${{ matrix.target }}/release/hx.exe" "dist/"
          else
            cp "target/${{ matrix.target }}/release/hx" "dist/"
          fi
          if [ -d runtime/grammars/sources ]; then
            rm -rf runtime/grammars/sources
          fi
          cp -r runtime dist

      - uses: actions/upload-artifact@v3
        with:
          name: bins-${{ matrix.build }}
          path: dist

  publish:
    name: Publish
    needs: [dist]
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v3

      - uses: actions/download-artifact@v3

      - name: Build archive
        shell: bash
        run: |
          set -ex

          source="$(pwd)"
          mkdir -p runtime/grammars/sources
          tar xJf grammars/grammars.tar.xz -C runtime/grammars/sources
          rm -rf grammars

          cd "$(mktemp -d)"
          mv $source/bins-* .
          mkdir dist

          for dir in bins-* ; do
              platform=${dir#"bins-"}
              if [[ $platform =~ "windows" ]]; then
                  exe=".exe"
              fi
              pkgname=helix-$GITHUB_REF_NAME-$platform
              mkdir $pkgname
              cp $source/LICENSE $source/README.md $pkgname
              mkdir $pkgname/contrib
              cp -r $source/contrib/completion $pkgname/contrib
              mv bins-$platform/runtime $pkgname/
              mv bins-$platform/hx$exe $pkgname
              chmod +x $pkgname/hx$exe

              if [[ "$platform" = "aarch64-linux" || "$platform" = "x86_64-linux" ]]; then
                  mv bins-$platform/helix-*.AppImage* dist/
              fi

              if [ "$exe" = "" ]; then
                  tar cJf dist/$pkgname.tar.xz $pkgname
              else
                  7z a -r dist/$pkgname.zip $pkgname
              fi
          done

          tar cJf dist/helix-$GITHUB_REF_NAME-source.tar.xz -C $source .
          mv dist $source/

      - name: Upload binaries to release
        uses: svenstaro/upload-release-action@v2
        if: env.preview == 'false'
        with:
          repo_token: ${{ secrets.GITHUB_TOKEN }}
          file: dist/*
          file_glob: true
          tag: ${{ github.ref_name }}
          overwrite: true
      
      - name: Upload binaries as artifact
        uses: actions/upload-artifact@v3
        if: env.preview == 'true'
        with:
          name: release
          path: dist/*