name: Latest builds

on: push

jobs:
  publish:
    env:
      APP_NAME: timelinize
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest, macos-15-intel, ubuntu-24.04-arm]
      fail-fast: false
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v5

      - name: Install Go
        uses: actions/setup-go@v5
        with:
          go-version: stable

      # TODO: The Windows Server 2022 runner apparently comes with msys2 installed
      # but I haven't looked into using it. We'd have to install the packages using
      # its shell, but I'm not sure how to do that.
      - name: Install MSYS2 (Windows)
        if: matrix.os == 'windows-latest'
        uses: msys2/setup-msys2@v2
        with:
          update: true  # gets more current packages (often necessary when we update vips), but takes longer
          install: >-
             base-devel
             mingw-w64-x86_64-toolchain
             mingw-w64-x86_64-libvips

      - name: Install libraries (Linux)
        if: startsWith(matrix.os, 'ubuntu-')
        uses: ./.github/actions/compile-libvips-linux

      # On April 22, 2025, we had to separately install glib -- didn't work in the same install command as vips. Compilation fails otherwise. Yes, annotations say it is already installed. Shrug.
      # In late May 2025, installing glib was no longer sufficient; and indeed a warning showed that it was already installed and up-to-date. But the linker couldn't find gio-2.0 (same error as in April).
      # The fix for May's error involved setting CGO_LDFLAGS below using pkg-config (which is also already installed and up-to-date).
      - name: Install libraries (macOS)
        if: ${{ matrix.os == 'macos-latest' || matrix.os == 'macos-15-intel' }}
        run: |
          brew install vips

      # It is crucial to use our gcc compiler instead of the preinstalled gcc,
      # which has an MSYS2 path at c:\msys64. The MSYS2 we installed is in $RUNNER_TEMP.
      # (Took me months to figure out that the temp dir sometimes is on c:\ and other
      # times it's on d:\! gah.)
      # (Setting `CC` env var is not enough! You MUST *prepend* the PATH env var!)
      - name: Update PATH (Windows)
        if: matrix.os == 'windows-latest'
        shell: bash
        run: echo "$RUNNER_TEMP\msys64\mingw64\bin" >> $GITHUB_PATH

      # Print versions for troubleshooting purposes
      - name: Check vips version (Windows)
        if: startsWith(matrix.os, 'windows-')
        shell: bash
        run: vips --version

      - name: Check vips version (Linux)
        if: startsWith(matrix.os, 'ubuntu-')
        run: vips --version

      - name: Check vips version (macOS)
        if: startsWith(matrix.os, 'macos-')
        run: vips --version

      # As of May 2025, The CGO_LDFLAGS env var is necessary on macOS since it can't find gio-2.0 otherwise.
      # LLMs also suggested adding:
      # - export CGO_CFLAGS="$(pkg-config --cflags gio-2.0 vips)"
      # - export PKG_CONFIG_PATH="/opt/homebrew/lib/pkgconfig:/opt/homebrew/opt/glib/lib/pkgconfig:$PKG_CONFIG_PATH"
      # but they don't seem to be necessary. Adding as a comment in case something breaks AGAIN in the future, maybe they'll help.
      - name: Compile application
        env:
          CGO_ENABLED: 1
        shell: bash
        run: |
          export CGO_LDFLAGS="$(pkg-config --libs gio-2.0 vips)"
          env
          go env
          echo "Building..."
          go build
          echo "Success."
      
      # use conventional archive formats for each platform

      - name: Compress build (Linux)
        if: startsWith(matrix.os, 'ubuntu-')
        run: |
          ARCH=${{ matrix.os == 'ubuntu-latest' && 'x64' || 'arm64' }}
          REF_NAME=$(echo ${{ github.ref_name }} | sed 's|/|-|g')
          export ARTIFACT_NAME="${{ env.APP_NAME }}_${REF_NAME}_linux_${ARCH}.tar.gz"
          echo "ARTIFACT_NAME=$ARTIFACT_NAME" >> $GITHUB_ENV
          tar -czvf "$ARTIFACT_NAME" ${{ env.APP_NAME }}

      - name: Compress build (Windows)
        if: matrix.os == 'windows-latest'
        run: |
          $env:ARTIFACT_NAME = "${{ env.APP_NAME }}_${{ github.ref_name }}_windows_x64.zip"
          echo "ARTIFACT_NAME=$env:ARTIFACT_NAME" >> $env:GITHUB_ENV
          7z a "$env:ARTIFACT_NAME" ${{ env.APP_NAME }}.exe -r

      - name: Compress build (macOS arm64)
        if: matrix.os == 'macos-latest'
        run: |
          REF_NAME=$(echo ${{ github.ref_name }} | sed 's|/|-|g')
          export ARTIFACT_NAME="${{ env.APP_NAME }}_${REF_NAME}_mac_arm64.zip"
          echo "ARTIFACT_NAME=$ARTIFACT_NAME" >> $GITHUB_ENV
          zip "$ARTIFACT_NAME" ${{ env.APP_NAME }}

      - name: Compress build (macOS x64)
        if: matrix.os == 'macos-15-intel'
        run: |
          REF_NAME=$(echo ${{ github.ref_name }} | sed 's|/|-|g')
          export ARTIFACT_NAME="${{ env.APP_NAME }}_${REF_NAME}_mac_x64.zip"
          echo "ARTIFACT_NAME=$ARTIFACT_NAME" >> $GITHUB_ENV
          zip "$ARTIFACT_NAME" ${{ env.APP_NAME }}
    
      # always create an artifact so users can conveniently download updated builds to test patches
      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: ${{ env.ARTIFACT_NAME }}
          path: ${{ env.ARTIFACT_NAME }}

      # only do releases on tags; if another runner already made the release, we only upload the
      # artifact from this platform to it
      - name: Publish release (tags only)
        if: startsWith(github.ref, 'refs/tags/')
        run: |
          gh release create --generate-notes --target ${{ github.sha }} "${{ github.ref_name }}" "${{ env.ARTIFACT_NAME }}" \
          || gh release upload "${{ github.ref_name }}" "${{ env.ARTIFACT_NAME }}"
        env:
          GH_TOKEN: ${{ github.token }}