action.yml

name: "Run PiShrink"
author: ethanjli
description: Shrinks and compresses a Raspberry Pi SD card image.
branding:
  icon: minimize-2
  color: red

inputs:
  image:
    description: Path of the image to shrink
    required: true
  destination:
    description: Path to write the shrunken image to
    required: false
  compress:
    description:
      Compress the image after shrinking using gzip or xz;
      if set, the `.gz` or `.xz` extension (respectively) will be added to the file name.
      Allowed values are `gzip`, `xz`, and `none`.
    required: false
    default: none
  compress-parallel:
    description:
      Compress the image in parallel using multiple cores;
      use option `-f9` for pigz and option `-T0` for xz and compress in parallel
    required: false
    default: false
  prevent-expansion:
    description: Prevent automatic filesystem expansion when the image is booted for the first time
    required: false
    default: false
  advanced-fs-repair:
    description: Attempt to repair the filesystem using additional options if the normal repair fails
    required: false
    default: false
  verbose:
    description: Enable more verbose output
    required: false
    default: false
  # TODO: expose the -d flag - but where does the debug log file get written, and how should we
  # expose it?

outputs:
  destination:
    description: Path of the shrunken image
    value: ${{ steps.run-pishrink.outputs.destination }}

runs:
  using: composite
  steps:
    - id: run-pishrink
      shell: bash
      env:
        INPUT_IMAGE: ${{ inputs.image }}
        INPUT_DESTINATION: ${{ inputs.destination }}
        INPUT_COMPRESS: ${{ inputs.compress }}
        INPUT_COMPRESS_PARALLEL: ${{ inputs.compress-parallel }}
        INPUT_PREVENT_EXPANSION: ${{ inputs.prevent-expansion }}
        INPUT_ADVANCED_FS_REPAIR: ${{ inputs.advanced-fs-repair }}
        INPUT_VERBOSE: ${{ inputs.verbose }}
      run: |
        ${{ github.action_path }}/gha-wrapper-pishrink.sh