release.yml

name: Release

on:
  push:
    tags:
      - 'v*'

permissions:
  contents: write

jobs:
  build-linux:
    strategy:
      matrix:
        include:
          - arch: amd64
            runner: ubuntu-latest
          - arch: arm64
            runner: ubuntu-24.04-arm
    runs-on: ${{ matrix.runner }}

    steps:
      - uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Build Docker image with FFmpeg 8
        run: |
          docker build -f Dockerfile.build -t reels-builder .

      - name: Build binary in container
        run: |
          VERSION=${GITHUB_REF_NAME#v}
          docker run --rm -v ${{ github.workspace }}:/app reels-builder \
            go build -buildvcs=false -ldflags "-s -w -X main.Version=$VERSION" -o reels-linux-${{ matrix.arch }} .

      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: reels-linux-${{ matrix.arch }}
          path: reels-linux-${{ matrix.arch }}

  build-macos:
    runs-on: macos-latest

    steps:
      - uses: actions/checkout@v4

      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version: '1.25'

      - name: Install build tools
        run: |
          brew install meson nasm

      - name: Build dav1d 1.5.1 (static)
        run: |
          git clone --depth 1 --branch 1.5.1 https://code.videolan.org/videolan/dav1d.git /tmp/dav1d
          cd /tmp/dav1d
          meson setup build --default-library=static --prefix=/usr/local \
              --buildtype=release -Denable_tools=false -Denable_tests=false
          ninja -C build
          sudo ninja -C build install

      - name: Build FFmpeg 8.0.1 (static, decode-only, minimal)
        run: |
          curl -sL https://ffmpeg.org/releases/ffmpeg-8.0.1.tar.xz -o /tmp/ffmpeg-8.0.1.tar.xz
          tar xf /tmp/ffmpeg-8.0.1.tar.xz -C /tmp
          cd /tmp/ffmpeg-8.0.1
          ./configure \
              --prefix=/usr/local \
              --enable-gpl \
              --enable-version3 \
              --enable-libdav1d \
              --enable-static \
              --disable-shared \
              --disable-doc \
              --disable-debug \
              --disable-programs \
              --disable-encoders \
              --disable-muxers \
              --disable-devices \
              --disable-filters \
              --enable-filter=aresample \
              --enable-filter=scale \
              --enable-filter=null \
              --enable-filter=anull \
              --disable-network \
              --disable-autodetect \
              --enable-pthreads \
              --enable-zlib
          make -j$(sysctl -n hw.ncpu)
          sudo make install

      - name: Build
        env:
          CGO_ENABLED: 1
          PKG_CONFIG_PATH: /usr/local/lib/pkgconfig
          CGO_CFLAGS: "-I/usr/local/include"
          CGO_LDFLAGS: "-L/usr/local/lib -lavdevice -lavformat -lavcodec -ldav1d -lz -lavfilter -lm -lswscale -lswresample -lavutil -pthread"
        run: |
          VERSION=${GITHUB_REF_NAME#v}
          go build -ldflags "-s -w -X main.Version=$VERSION" -o reels-darwin-arm64 .

      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: reels-darwin-arm64
          path: reels-darwin-arm64

  release:
    needs: [build-linux, build-macos]
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Download all artifacts
        uses: actions/download-artifact@v4
        with:
          path: artifacts

      - name: Create source tarball
        run: |
          git archive --format=tar.gz --prefix=reels-${GITHUB_REF_NAME#v}/ HEAD > artifacts/reels-${GITHUB_REF_NAME#v}.tar.gz

      - name: Extract changelog
        id: changelog
        run: |
          VERSION=${GITHUB_REF_NAME#v}
          # Extract the section for this version (between its heading and the next heading)
          BODY=$(awk "/^## \\[${VERSION}\\]/{found=1; next} /^## \\[/{if(found) exit} found{print}" CHANGELOG.md)
          # Fall back to auto-generated notes if no changelog entry exists
          if [ -z "$BODY" ]; then
            echo "found=false" >> $GITHUB_OUTPUT
          else
            echo "found=true" >> $GITHUB_OUTPUT
            {
              echo "body<<EOF"
              echo "$BODY"
              echo "EOF"
            } >> $GITHUB_OUTPUT
          fi

      - name: Create release
        uses: softprops/action-gh-release@v1
        with:
          files: |
            artifacts/reels-linux-amd64/reels-linux-amd64
            artifacts/reels-linux-arm64/reels-linux-arm64
            artifacts/reels-darwin-arm64/reels-darwin-arm64
            artifacts/reels-*.tar.gz
          body: ${{ steps.changelog.outputs.found == 'true' && steps.changelog.outputs.body || '' }}
          generate_release_notes: ${{ steps.changelog.outputs.found != 'true' }}