name: Create release artifacts
on:
  push:
    tags:
      - v[0-9]*

jobs:
  windows:
    runs-on: windows-2022
    strategy:
      matrix:
        bits: [32, 64]
        include:
          - bits: 32
            arch: x86
            platform: Win32
          - bits: 64
            arch: x86_x64
            platform: x64
      fail-fast: false
    steps:
      - name: Get version from tag
        shell: bash
        run: | # Turn "vX.Y.Z" into "X.Y.Z"
          VERSION="${{ github.ref_name }}"
          echo "version=${VERSION#v}" >> $GITHUB_ENV
      - name: Checkout repo
        uses: actions/checkout@v4
      - name: Install deps
        run: .github/scripts/get_win_deps.ps1
      - name: Check libraries cache
        id: cache
        uses: actions/cache@v4
        with:
          path: |
            zbuild
            pngbuild
          key: ${{ matrix.arch }}-${{ hashFiles('zlib/**', 'libpng/**') }}
      - name: Build zlib
        if: steps.cache.outputs.cache-hit != 'true'
        run: | # BUILD_SHARED_LIBS causes the output DLL to be correctly called `zlib1.dll`
          cmake -S zlib -B zbuild -A ${{ matrix.platform }} -Wno-dev -DCMAKE_INSTALL_PREFIX=install_dir -DBUILD_SHARED_LIBS=ON
          cmake --build zbuild --config Release -j
      - name: Install zlib
        run: |
          cmake --install zbuild
      - name: Build libpng
        if: steps.cache.outputs.cache-hit != 'true'
        shell: bash
        run: |
          cmake -S libpng -B pngbuild -A ${{ matrix.platform }} -Wno-dev -DCMAKE_INSTALL_PREFIX=install_dir -DPNG_SHARED=ON -DPNG_STATIC=OFF -DPNG_TESTS=OFF
          cmake --build pngbuild --config Release -j
      - name: Install libpng
        run: |
          cmake --install pngbuild
      - name: Build Windows binaries
        shell: bash
        run: |
          cmake -S . -B build -A ${{ matrix.platform }} -DCMAKE_INSTALL_PREFIX=install_dir -DCMAKE_BUILD_TYPE=Release
          cmake --build build --config Release -j --verbose
          cmake --install build --verbose --prefix install_dir --strip
      - name: Package binaries
        run: |
          Compress-Archive -LiteralPath @("install_dir/bin/rgbasm.exe", "install_dir/bin/rgblink.exe", "install_dir/bin/rgbfix.exe", "install_dir/bin/rgbgfx.exe", "install_dir/bin/zlib1.dll", "install_dir/bin/libpng16.dll") "rgbds-${{ env.version }}-win${{ matrix.bits }}.zip"
      - name: Upload Windows binaries
        uses: actions/upload-artifact@v4
        with:
          name: win${{ matrix.bits }}
          path: rgbds-${{ env.version }}-win${{ matrix.bits }}.zip

  macos:
    runs-on: macos-14
    steps:
      - name: Get version from tag
        shell: bash
        run: | # Turn "refs/tags/vX.Y.Z" into "X.Y.Z"
          VERSION="${{ github.ref_name }}"
          echo "version=${VERSION#v}" >> $GITHUB_ENV
      - name: Checkout repo
        uses: actions/checkout@v4
      - name: Install deps
        shell: bash
        run: |
          ./.github/scripts/install_deps.sh macos
      - name: Build libpng
        run: |
          ./.github/scripts/build_libpng.sh
      # We force linking libpng statically; the other libs are provided by macOS itself
      - name: Build binaries
        run: |
          make -kj CXXFLAGS="-O3 -flto -DNDEBUG -mmacosx-version-min=10.9 -arch x86_64 -arch arm64" PNGCFLAGS="-I libpng-staging/include" PNGLDLIBS="libpng-staging/lib/libpng.a -lz" Q=
          strip rgb{asm,link,fix,gfx}
      - name: Package binaries
        run: |
          zip --junk-paths rgbds-${{ env.version }}-macos.zip rgb{asm,link,fix,gfx} man/* .github/scripts/install.sh
      - name: Upload macOS binaries
        uses: actions/upload-artifact@v4
        with:
          name: macos
          path: rgbds-${{ env.version }}-macos.zip

  linux:
    runs-on: ubuntu-20.04 # Oldest supported, for best glibc compatibility.
    steps:
      - name: Get version from tag
        shell: bash
        run: | # Turn "refs/tags/vX.Y.Z" into "X.Y.Z"
          VERSION="${{ github.ref_name }}"
          echo "version=${VERSION#v}" >> $GITHUB_ENV
      - name: Checkout repo
        uses: actions/checkout@v4
      - name: Install deps
        shell: bash
        run: |
          ./.github/scripts/install_deps.sh ubuntu-20.04
      - name: Build binaries
        run: |
          make -kj WARNFLAGS="-Wall -Wextra -pedantic -static" PKG_CONFIG="pkg-config --static" Q=
          strip rgb{asm,link,fix,gfx}
      - name: Package binaries
        run: |
          tar caf rgbds-${{ env.version }}-linux-x86_64.tar.xz --transform='s#.*/##' rgb{asm,link,fix,gfx} man/* .github/scripts/install.sh
      - name: Upload Linux binaries
        uses: actions/upload-artifact@v4
        with:
          name: linux
          path: rgbds-${{ env.version }}-linux-x86_64.tar.xz

  release:
    runs-on: ubuntu-latest
    needs: [windows, macos, linux]
    permissions:
      contents: write
    steps:
      - name: Get version from tag
        shell: bash
        run: | # Turn "refs/tags/vX.Y.Z" into "X.Y.Z"
          VERSION="${{ github.ref_name }}"
          echo "version=${VERSION#v}" >> $GITHUB_ENV
      - name: Checkout repo
        uses: actions/checkout@v4
      - name: Package sources
        run: |
          make dist Q=
          ls
      - name: Download Linux binaries
        uses: actions/download-artifact@v4
      - name: Release
        uses: softprops/action-gh-release@v2
        with:
          body: |
            Please ensure that the packages below work properly.
            Once that's done, replace this text with the changelog, un-draft the release, and update the `release` branch.
            By the way, if you forgot to update `include/version.hpp`, RGBASM's version test is gonna fail in the tag's regression testing! (Use `git push --delete origin <tag>` to delete it)
          draft: true # Don't publish the release quite yet...
          prerelease: ${{ contains(github.ref, '-rc') }}
          files: |
            win32/rgbds-${{ env.version }}-win32.zip
            win64/rgbds-${{ env.version }}-win64.zip
            macos/rgbds-${{ env.version }}-macos.zip
            linux/rgbds-${{ env.version }}-linux-x86_64.tar.xz
            rgbds-${{ env.version }}.tar.gz
          fail_on_unmatched_files: true
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
