name: Load build environment
description: >
  Loads build-server images uploaded by setup-buildenv into the local Docker
  daemon, and resolves the image name from the tag. Use in jobs that run the
  container directly (test jobs). For jobs that only need a shell inside the
  container, use run-in-buildenv instead.

inputs:
  build-server-tag:
    description: "Build image tag, from server/build/buildenv-tag.sh (e.g. go1.26.3-node24.11.1)"
    required: true
  fips-enabled:
    description: "Set to 'true' to resolve the FIPS build image"
    required: false
    default: "false"

outputs:
  image:
    description: "Fully-qualified build image name (e.g. mattermost/mattermost-build-server:go1.26.3-node24.11.1)."
    value: ${{ steps.resolve.outputs.image }}

runs:
  using: composite
  steps:
    - name: Set constants
      shell: bash
      run: |
        echo "BUILDENV_ARTIFACT=buildenv-image" >> "${GITHUB_ENV}"
        echo "BUILDENV_FIPS_ARTIFACT=buildenv-fips-image" >> "${GITHUB_ENV}"
        echo "BUILDENV_TMPDIR=/tmp/buildenv-save" >> "${GITHUB_ENV}"
    - name: Download buildenv artifact
      id: download
      if: ${{ inputs.fips-enabled != 'true' }}
      continue-on-error: true
      uses: actions/download-artifact@70fc10c6e5e1ce46ad2ea6f2b72d43f7d47b13c3 # v8.0.0
      with:
        name: ${{ env.BUILDENV_ARTIFACT }}
        path: ${{ env.BUILDENV_TMPDIR }}/
    - name: Load buildenv from artifact
      if: ${{ inputs.fips-enabled != 'true' && steps.download.outcome == 'success' }}
      shell: bash
      run: docker load -i "${BUILDENV_TMPDIR}/image.tar.gz"
    - name: Download buildenv-fips artifact
      id: download-fips
      if: ${{ inputs.fips-enabled == 'true' }}
      continue-on-error: true
      uses: actions/download-artifact@70fc10c6e5e1ce46ad2ea6f2b72d43f7d47b13c3 # v8.0.0
      with:
        name: ${{ env.BUILDENV_FIPS_ARTIFACT }}
        path: ${{ env.BUILDENV_TMPDIR }}/
    - name: Load buildenv-fips from artifact
      if: ${{ inputs.fips-enabled == 'true' && steps.download-fips.outcome == 'success' }}
      shell: bash
      run: docker load -i "${BUILDENV_TMPDIR}/image-fips.tar.gz"
    - name: Resolve image name
      id: resolve
      shell: bash
      env:
        FIPS: ${{ inputs.fips-enabled }}
        TAG: ${{ inputs.build-server-tag }}
      run: |
        if [[ "${FIPS}" == 'true' ]]; then
          echo "image=mattermost/mattermost-build-server-fips:${TAG}" >> "${GITHUB_OUTPUT}"
        else
          echo "image=mattermost/mattermost-build-server:${TAG}" >> "${GITHUB_OUTPUT}"
        fi