action.yaml

name: set environment variables for gha-trigger
description: set environment variables for gha-trigger
inputs:
  data:
    description: gha-trigger's workflow dispatch input
    required: true
runs:
  using: composite
  steps:
    - shell: bash
      run: |
        event_path=$(mktemp)
        echo "$INPUTS_EVENT" > "$event_path"
        # GITHUB_ACTOR
        # > The name of the person or app that initiated the workflow.
        # > For example, octocat.
        # GITHUB_SHA
        # > The commit SHA that triggered the workflow.
        # > The value of this commit SHA depends on the event that triggered the workflow.
        # > For more information, see "Events that trigger workflows."
        # > https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows
        # > For example, ffac537e6cbbf934b08745a378932722df287a53.
        cat << EOS >> "$GITHUB_ENV"
        GHA_ACTOR=${{fromJSON(inputs.data).event.sender.login}}
        GHA_EVENT_NAME=${{fromJSON(inputs.data).event_name}}
        GHA_REPOSITORY=${{fromJSON(inputs.data).event.repository.full_name}}
        GHA_REPOSITORY_OWNER=${{fromJSON(inputs.data).event.repository.owner.login}}
        GHA_REPOSITORY_NAME=${{fromJSON(inputs.data).event.repository.name}}
        GHA_SHA=${{fromJSON(inputs.data).event.sha}}
        GHA_COMMIT_STATUS_SHA=${{fromJSON(inputs.data).event.sha}}
        GHA_EVENT_PATH=$event_path
        GHA_REF=refs/heads/${{fromJSON(inputs.data).event.repository.default_branch}}
        GHA_REF_NAME=${{fromJSON(inputs.data).event.repository.default_branch}}
        EOS
      env:
        INPUTS_EVENT: ${{toJSON(fromJSON(inputs.data).event)}}

    - shell: bash
      run: |
        # GITHUB_BASE_REF
        # > The name of the base ref or target branch of the pull request in a workflow run.
        # > This is only set when the event that triggers a workflow run is either pull_request or pull_request_target.
        # > For example, main.
        # GITHUB_HEAD_REF
        # > The head ref or source branch of the pull request in a workflow run.
        # > This property is only set when the event that triggers a workflow run is either pull_request or pull_request_target.
        # > For example, feature-branch-1.
        # GITHUB_REF
        # > For workflows triggered by pull_request, this is the pull request merge branch.
        # GITHUB_SHA
        # > Last merge commit on the GITHUB_REF branch
        cat << EOS >> "$GITHUB_ENV"
        GHA_BASE_REF=${{fromJSON(inputs.data).pull_request.base.ref}}
        GHA_HEAD_SHA=${{fromJSON(inputs.data).pull_request.head.sha}}
        GHA_COMMIT_STATUS_SHA=${{fromJSON(inputs.data).pull_request.head.sha}}
        GHA_HEAD_REF=${{fromJSON(inputs.data).pull_request.head.ref}}
        GHA_REF=refs/pull/${{fromJSON(inputs.data).event.number}}/merge
        GHA_REF_NAME=${{fromJSON(inputs.data).event.number}}/merge
        GHA_SHA=${{fromJSON(inputs.data).pull_request.merge_commit_sha}}
        GHA_PULL_REQUEST_NUMBER=${{fromJSON(inputs.data).event.number}}
        EOS
      if: startsWith(env.GHA_EVENT_NAME, 'pull_request')

    - shell: bash
      # GITHUB_REF
      # > For workflows triggered by release, this is the release tag created.
      run: |
        cat << EOS >> "$GITHUB_ENV"
        GHA_REF=refs/tags/${{fromJSON(inputs.data).event.release.tag_name}}
        GHA_REF_NAME=${{fromJSON(inputs.data).event.release.tag_name}}
        EOS
      if: env.GHA_EVENT_NAME == 'release'

    - shell: bash
      # GITHUB_REF
      # > For workflows triggered by push, this is the branch or tag ref that was pushed.
      run: |
        # TODO
        # When you delete a branch,
        # the SHA in the workflow run (and its associated refs) reverts to the default branch of the repository.
        cat << EOS >> "$GITHUB_ENV"
        GHA_REF=$REF
        GHA_SHA=${{fromJSON(inputs.data).event.head_commit.id}}
        GHA_COMMIT_STATUS_SHA=${{fromJSON(inputs.data).event.head_commit.id}}
        EOS
      if: env.GHA_EVENT_NAME == 'push'
      env:
        REF: ${{fromJSON(inputs.data).event.ref}}

    - shell: bash
      run: |
        cat << EOS >> "$GITHUB_ENV"
        GHA_REF_NAME=${GHA_REF#refs/heads/}
        EOS
      if: "env.GHA_EVENT_NAME == 'push' && startsWith(env.GHA_REF, 'refs/heads/')"

    - shell: bash
      run: |
        cat << EOS >> "$GITHUB_ENV"
        GHA_REF_NAME=${GHA_REF#refs/tags/}
        EOS
      if: "env.GHA_EVENT_NAME == 'push' && startsWith(env.GHA_REF, 'refs/tags/')"

    - shell: bash
      run: |
        cat << EOS >> "$GITHUB_ENV"
        GHA_REF_NAME=${{fromJSON(inputs.data).event.ref}}
        EOS
      if: contains(fromJSON('["create", "delete"]'), env.GHA_EVENT_NAME)

    - shell: bash
      run: |
        cat << EOS >> "$GITHUB_ENV"
        GHA_REF=refs/heads/${{fromJSON(inputs.data).event.ref}}
        EOS
      if: |
        contains(fromJSON('["create", "delete"]'), env.GHA_EVENT_NAME) && fromJSON(inputs.data).event.ref_type == 'branch'

    - shell: bash
      run: |
        cat << EOS >> "$GITHUB_ENV"
        GHA_REF=refs/tags/${{fromJSON(inputs.data).event.ref}}
        EOS
      if: |
        contains(fromJSON('["create", "delete"]'), env.GHA_EVENT_NAME) && fromJSON(inputs.data).event.ref_type == 'tag'

    - shell: bash
      run: |
        # TODO GITHUB_REF: Branch or tag to be deployed (empty if created with a commit SHA)
        cat << EOS >> "$GITHUB_ENV"
        GHA_SHA=${{fromJSON(inputs.data).event.deployment.sha}}
        GHA_COMMIT_STATUS_SHA=${{fromJSON(inputs.data).event.deployment.sha}}
        GHA_REF=refs/heads/${{fromJSON(inputs.data).event.deployment.ref}}
        GHA_REF_NAME=${{fromJSON(inputs.data).event.deployment.ref}}
        EOS
      if: env.GHA_EVENT_NAME == 'deployment' || env.GHA_EVENT_NAME == 'deployment_status'

      # TODO GITHUB_REF
      # > The branch or tag ref that triggered the workflow run.
      # > For other triggers, this is the branch or tag ref that triggered the workflow run.
      # > This is only set if a branch or tag is available for the event type.
      # > The ref given is fully-formed, meaning that for branches the format is refs/heads/<branch_name>, for pull requests it is refs/pull/<pr_number>/merge, and for tags it is refs/tags/<tag_name>.
      # > For example, refs/heads/feature-branch-1.

      # TODO GITHUB_REF_NAME
      # > The branch or tag name that triggered the workflow run. For example, feature-branch-1.
    - shell: bash
      run: |
        env_path=$(mktemp)
        cat << EOS >> "$env_path"
        export GITHUB_ACTOR=$GHA_ACTOR
        export GITHUB_BASE_REF=$GHA_BASE_REF
        export GITHUB_EVENT_NAME=$GHA_EVENT_NAME
        export GITHUB_HEAD_REF=$GHA_HEAD_REF
        export GITHUB_REF=$GHA_REF
        export GITHUB_REF_NAME=$GHA_REF_NAME
        export GITHUB_REPOSITORY=$GHA_REPOSITORY
        export GITHUB_REPOSITORY_OWNER=$GHA_REPOSITORY_OWNER
        export GITHUB_SHA=$GHA_SHA
        export GITHUB_EVENT_PATH=$GHA_EVENT_PATH
        EOS
        echo "GHA_ENV=$env_path" >> "$GITHUB_ENV"