name: Apple signing
description: signs binaries for macOS
inputs:
  p12-file-base64:
    description: Base64 encoded p12 file
    required: true
  p12-password:
    description: Password for p12 file
    required: true
  identity:
    description: Identity to use for signing
    required: true
  paths:
    description: Paths to search for libs/bins sign
    required: true

runs:
  using: "composite"
  steps:
    # Only runs on macOS
    - name: Check platform
      shell: sh
      run: |
        if [[ "$RUNNER_OS" != "macOS" ]]; then
          echo "This action only runs on macOS"
          exit 1
        fi

    # the next three steps bless our code for Apple. It might be the case they should be
    # encapulated separately.
    # FIXME: using an explicit commit in a PR isn't great, but the last release was almost 3 years
    # ago, and we need bugfixes.
    # FIXME: replace this with a tea script based on https://localazy.com/blog/how-to-automatically-sign-macos-apps-using-github-actions
    # github has a doc with similar content, but it's not returning to me atm.
    - uses: apple-actions/import-codesign-certs@d54750db52a4d3eaed0fc107a8bab3958f3f7494
      with:
        p12-file-base64: ${{ inputs.p12-file-base64 }}
        p12-password: ${{ inputs.p12-password }}

    # Codesign libs and bins
    - name: Codesign package
      shell: bash
      run: |
        for PATH in $PATHS; do
          /usr/bin/find $PATH -name '*.so' -or -name '*.dylib' -print0 | \
            /usr/bin/xargs -0 /usr/bin/codesign -s "$IDENTITY" --force -v --deep --timestamp --preserve-metadata=entitlements -o runtime
          if test -d $PATH/bin; then
            /usr/bin/find $PATH/bin -type f -print0 | \
              /usr/bin/xargs -0 /usr/bin/codesign -s "$IDENTITY" -v --force --deep --timestamp --preserve-metadata=entitlements -o runtime
          fi
        done
      env:
        PATHS: ${{ inputs.paths }}
        IDENTITY: ${{ inputs.identity }}

    # This isn't very informative, but even a no-op is safer than none
    - name: Check codesigning
      shell: bash
      run: |
        for PATH in $PATHS; do
          LIBS="$(/usr/bin/find $PATH -name '*.so' -or -name '*.dylib')"
          if test -d $PATH/bin; then
            BINS="$(/usr/bin/find $PATH/bin -type f)"
          fi
          for SIGNED in $LIBS $BINS; do
            /usr/bin/codesign -vvv --deep --strict "$SIGNED"
          done
        done
      env:
        PATHS: ${{ inputs.paths }}

    # Needed for self-hosted runner, since it doesn't destroy itself automatically.
    - name: Delete keychain
      if: always()
      shell: bash
      run: /usr/bin/security delete-keychain signing_temp.keychain