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name: 'Setup runner environment'
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description: 'Sets up runner environment with proper toolchain for building workerd'
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inputs:
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  GOOGLESOURCE_COOKIE:
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    description: 'Cookie for googlesource.com'
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    required: true
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runs:
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  using: 'composite'
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  steps:
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    - name: Setup Linux
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      shell: bash
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      if: runner.os == 'Linux'
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      run: |
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        export DEBIAN_FRONTEND=noninteractive
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        wget https://apt.llvm.org/llvm.sh
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        sed -i '/apt-get install/d' llvm.sh
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        chmod +x llvm.sh
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        sudo ./llvm.sh 19
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        # keep in sync with build/ci.bazelrc
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        sudo apt-get install -y -qq --no-install-recommends \
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          clang-19 \
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          lld-19 \
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          libunwind-19 \
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          libc++abi1-19 \
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          libc++1-19 \
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          libc++-19-dev \
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          libclang-rt-19-dev \
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          llvm-19
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        sudo ln -s /usr/bin/llvm-symbolizer-19 /usr/bin/llvm-symbolizer
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        sudo ln -s /usr/bin/llvm-profdata-19 /usr/bin/llvm-profdata
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        sudo ln -s /usr/bin/llvm-cov-19 /usr/bin/llvm-cov
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        echo "build:linux --repo_env=CC=/usr/lib/llvm-19/bin/clang" >> .bazelrc
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        echo "build:linux --linkopt=--ld-path=/usr/lib/llvm-19/bin/ld.lld" >> .bazelrc
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        echo "build:linux --host_linkopt=--ld-path=/usr/lib/llvm-19/bin/ld.lld" >> .bazelrc
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        echo "build:linux --repo_env=AR=/usr/lib/llvm-19/bin/llvm-ar" >> .bazelrc
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    - name: Setup Windows
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      shell: pwsh
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      env:
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        GOOGLESOURCE_COOKIE: ${{ inputs.GOOGLESOURCE_COOKIE }}
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      if: runner.os == 'Windows'
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      # Set a custom output root directory to avoid long file name issues.
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      # TODO(cleanup): According to https://github.com/actions/runner-images/blob/win25/20251216.149/images/windows/scripts/build/Configure-DeveloperMode.ps1#L13,
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      # this should already be set on the build image, but prior testing indicated CI speedups with
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      # it, check if it is actually having any effect.
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      run: |
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        # Enable Developer Mode to allow Bazel to create real symlinks
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        reg add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock" /t REG_DWORD /f /v "AllowDevelopmentWithoutDevLicense" /d "1"
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        git config --global core.symlinks true
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        git config --show-scope --show-origin core.symlinks
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        git config --system core.longpaths true
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        [System.IO.File]::WriteAllLines((Join-Path -Path $env:USERPROFILE -ChildPath '.bazelrc'), 'startup --output_user_root=\\\\?\\C:\\tmp')
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    - name: Setup macOS
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      if: runner.os == 'macOS'
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      shell: bash
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      env:
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        GOOGLESOURCE_COOKIE: ${{ inputs.GOOGLESOURCE_COOKIE }}
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      run: |
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        # Build using Xcode 16.3 (equivalent to Clang 19)
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        sudo xcode-select -s "/Applications/Xcode_16.3.app"
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    - name: Configure git hooks
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      shell: bash
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      # Configure git to quell an irrelevant warning for runners (they never commit / push).
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      run: git config core.hooksPath githooks
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    # Skip when the cookie is empty (forks, Dependabot PRs, local runs). Bazel will
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    # fall back to the unauthenticated googlesource endpoint, which is slower / more
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    # rate-limited but works without credentials.
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    - name: Configure Googlesource credentials (Unix)
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      shell: bash
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      if: inputs.GOOGLESOURCE_COOKIE != '' && runner.os != 'Windows'
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      env:
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        GOOGLESOURCE_COOKIE: ${{ inputs.GOOGLESOURCE_COOKIE }}
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      run: |
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        git config --global --add url."https://chromium.googlesource.com/a/".insteadOf "https://chromium.googlesource.com/"
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        git config --global http.cookiefile ~/.gitcookies
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        tr , \\t <<__END__ >>~/.gitcookies
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        .googlesource.com,TRUE,/,TRUE,2147483647,o,$GOOGLESOURCE_COOKIE
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        __END__
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    - name: Configure Googlesource credentials (Windows)
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      shell: pwsh
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      if: inputs.GOOGLESOURCE_COOKIE != '' && runner.os == 'Windows'
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      env:
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        GOOGLESOURCE_COOKIE: ${{ inputs.GOOGLESOURCE_COOKIE }}
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      run: |
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        git config --global --add url."https://chromium.googlesource.com/a/".insteadOf "https://chromium.googlesource.com/"
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        git config --global http.cookiefile "$env:USERPROFILE\.gitcookies"
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        Write-Output ".googlesource.com`tTRUE`t/`tTRUE`t2147483647`to`t$env:GOOGLESOURCE_COOKIE" >> "$env:USERPROFILE\.gitcookies"
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