name: 'Prepare docker environment variables'
description: 'Prepare docker environment variables'

outputs:
  shouldBuild:
    description: "Whether to build image or not"
    value: ${{ steps.ev.outputs.shouldBuild }}
  branchName:
    description: "Branch name"
    value: ${{ steps.ev.outputs.branchName }}
  branchNameContainer:
    description: "Branch name (for containers)"
    value: ${{ steps.ev.outputs.branchNameContainer }}
  timestamp:
    description: "Timestamp"
    value: ${{ steps.ev.outputs.timestamp }}
  sha:
    description: "sha"
    value: ${{ steps.ev.outputs.sha }}

runs:
  using: "composite"
  steps:
    - name: Generate config
      id: ev
      shell: python
      run: |
        """Helper script to get the actual branch name, docker safe"""
        import os
        from time import time

        env_pr_branch = "GITHUB_HEAD_REF"
        default_branch = "GITHUB_REF"
        sha = "GITHUB_SHA"

        branch_name = os.environ[default_branch]
        if os.environ.get(env_pr_branch, "") != "":
            branch_name = os.environ[env_pr_branch]

        should_build = str(os.environ.get("DOCKER_USERNAME", "") != "").lower()

        print("##[set-output name=branchName]%s" % branch_name)
        print(
            "##[set-output name=branchNameContainer]%s"
            % branch_name.replace("refs/heads/", "").replace("/", "-")
        )
        print("##[set-output name=timestamp]%s" % int(time()))
        print("##[set-output name=sha]%s" % os.environ[sha])
        print("##[set-output name=shouldBuild]%s" % should_build)