name: "Restore sealed source code"
description: "Restore sealed source code and confirm integrity hash"

# PROCESS
#
# 1. Exports artifact name using Prefix + GitHub Run ID (unique for each release trigger)
# 2. Compress entire source code as tarball OR given files
# 3. Create and export integrity hash for tarball
# 4. Upload artifact
# 5. Remove archive

# USAGE
#
# - name: Seal and upload
#   id: seal_source_code
#   uses: ./.github/actions/seal
#   with:
#     artifact_name_prefix: "source"
#
# - name: Restore sealed source code
#   uses: ./.github/actions/seal-restore
#   with:
#     integrity_hash: ${{ needs.seal_source_code.outputs.integrity_hash }}
#     artifact_name: ${{ needs.seal_source_code.outputs.artifact_name }}

# NOTES
#
# To be used together with .github/actions/seal

inputs:
  integrity_hash:
    description: "Integrity hash to verify"
    required: true
  artifact_name:
    description: "Sealed artifact name to restore"
    required: true

runs:
  using: "composite"
  steps:
    - id: adjust-path
      run: echo "${{ github.action_path }}" >> $GITHUB_PATH
      shell: bash

    - name: Download artifacts
      uses: actions/download-artifact@65a9edc5881444af0b9093a5e628f2fe47ea3b2e # v4.1.7
      with:
        name: ${{ inputs.artifact_name }}
        path: .

    - id: integrity_hash
      name: Create integrity hash for downloaded artifact
      run: |
        HASH=$(sha256sum "${ARTIFACT_NAME}.tar" | awk '{print $1}')

        echo "current_hash=${HASH}" >> "$GITHUB_OUTPUT"
      env:
        ARTIFACT_NAME: ${{ inputs.artifact_name }}
      shell: bash

    - id: verify_hash
      name: Verify sealed artifact integrity hash
      run: test "${CURRENT_HASH}" = "${PROVIDED_HASH}" || exit 1
      env:
        ARTIFACT_NAME: ${{ inputs.artifact_name }}
        PROVIDED_HASH: ${{ inputs.integrity_hash }}
        CURRENT_HASH: ${{ steps.integrity_hash.outputs.current_hash }}
      shell: bash

    # Restore and overwrite tarball in current directory
    - id: overwrite
      name: Extract tarball
      run: tar -xvf "${ARTIFACT_NAME}".tar
      env:
        ARTIFACT_NAME: ${{ inputs.artifact_name }}
      shell: bash

    - name: Remove archive
      run: rm -f "${ARTIFACT_NAME}.tar"
      env:
        ARTIFACT_NAME: ${{ inputs.artifact_name }}
      shell: bash